Carrier 48/50Z030-105 manual

Manufacturer reserves the right to disco ntinue, or change at any time, specifications or de signs without notice and without inc urring obligations. Catalog No . 04-534800 39-01 Pr inted in U .S .A. Form 48/50Z-5T Pg 1 7-08 Replaces: 48/50Z-4T Controls , Star t-Up , Oper ation, Ser vice and T roub leshooting CONTENTS Page SAFETY CONSIDERA TION S .[...]

2 CONTENTS (cont) Page Smoke Contr ol Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 • FIRE SMOKE INPUTS • AIRFLOW CONTROL DURING THE FIRE/SMO KE MODES • RELEV ANT ITEMS Indoor Air Quality Contr ol . . . . . . . . . . . . . . . . . . . . . . . 73 •O P E R A T I O N • SETTING UP THE SYSTEM • PRE-OCCUP ANCY PURGE • OP TI[...]

3 GENERAL This book contains Start-Up, Controls, Operation, T rouble- shooting and Service information for the 48/50Z Series rooftop units. See T able 1. These units are equipped with Comfort Link™ controls version 4.X or higher . Use this guide in conjunction with the separate installation instructions pack- aged with the unit. Refer to th e W i[...]

4 instead of the local display . The CCN tables are located in Appendix B of this manual. B ASIC CONTR OL USA GE Comfort Link™ Contr ols — The Comfort Link con- trols are a comprehensive unit-management system. The con- trol system is easy to access, configure, diagnose and trouble- shoot. The controls are flexible, pr oviding two types of cons[...]

5 Operation — All units are shipped from the factory with the scrolling marquee display , which is located in the main con- trol box. See Fig. 1. In addition, the Comfort Link™ controls also supports the use of th e handheld Navigator™ display . Both displays provide the user with an interface to the Comfort Link control system. The displays [...]

6 Table 2 — Scrolling Marquee Menu Display Structure RUN ST A TUS SER VICE TEST TEMPERA TURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURA TION TIME CLOCK OPERA TING MODES ALARMS Auto V iew of Run Status (VIEW) Econ Run Status (ECON) Cooling Informa tion (COOL) Mode T r ip Helper (TRIP) CCN Linkage (LINK) Compressor Run Hours (HRS) Compressor Sta[...]

7 ST ART -UP Unit Preparation — Check that unit has been installed in accordance with the installation instructions and applicable codes. Unit Setup — Make sure that the economizer hood has been installed and that the outdoor filters are properly installed. Internal Wiring — Ensure that all electrical connections in the control box are tighte[...]

8 T able 3 — F an P erformance — 48ZG,ZN030 and 50 ZG,ZN030 Units Without Disc harge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30A on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformance[...]

9 T able 4 — F an P erformance — 48ZG,ZN035 and 50 ZG,ZN035 Units Without Disc harge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30A on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformance[...]

10 T able 5 — F an P erformance — 48ZG,ZN040 and 50 ZG,ZN040 Units Without Disc harge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30A on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformanc[...]

11 T able 6 — F an P erformance — 48ZG,ZN050 and 50 ZG,ZN050 Units Without Disc harge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30A on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformanc[...]

12 Table 7 — Fan Perf ormance — 48ZG,ZN055 and 50ZG,ZN055 Units Without Discharge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30B on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30B bef ore using F an P erformance ta[...]

13 T able 8 — F an P erformance — 48ZG,ZN060 and 50 ZG,ZN060 Units Without Disc harge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30B on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30B bef ore using F an P erformanc[...]

14 T able 9 — F an P erformance — 48ZG,ZN070 and 50 ZG,ZN070 Units Without Disc harge Plenum* LEGEND *If calculating static pressure f o r a 48 Series unit, be sure to add gas heat pressure drop from T able 30B on page 32. NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30B bef ore using F an P erformanc[...]

15 T able 10 — Fa n P erformance — 50ZG,ZN030 Units With Discha rge Plen um and 50Z2,Z303 0 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL[...]

16 T able 11 — Fan P erformance — 50ZG,ZN03 5 Units With Discharge Plenum and 50 Z2,Z3035 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL S[...]

17 T able 12 — Fa n P erformance — 50ZG,ZN040 Units With Discha rge Plen um and 50Z2,Z304 0 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL[...]

18 T able 13 — Fan P erformance — 50ZG,ZN05 0 Units With Discharge Plenum and 50 Z2,Z3050 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30A bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL S[...]

19 T able 14 — Fa n P erformance — 50ZG,ZN055 Units With Discha rge Plen um and 50Z2,Z305 5 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30B bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL[...]

20 T able 15 — Fan P erformance — 50ZG,ZN06 0 Units With Discharge Plenum and 50 Z2,Z3060 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30B bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL S[...]

21 T able 16 — Fa n P erformance — 50ZG,ZN070 Units With Discha rge Plen um and 50Z2,Z307 0 Units LEGEND NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. See T able 30B bef ore using F an P erformance tables. 3. Conv ersio n — Bhp to kW: See T ables 26-28 f or motor efficiency . AIRFLO W (Cfm) A V AILABLE EXTERNAL[...]

22 T able 17 — F an P erf ormance — 48ZG,ZN,ZT ,ZW ,Z6,Z8 and 50ZG,ZN,ZT ,ZW ,ZX, ZZ,Z2,Z3,Z6,Z7,Z8,Z9075 Units With Forward-Curved Fan* LEGEND *If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from T able 30C . NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. F or return fa[...]

23 Table 18 — Fan Performanc e — 48ZG,ZN,ZT,ZW,Z6, Z8 and 50ZG,ZN,ZT,ZW,ZX, ZZ,Z2 ,Z3,Z6,Z7,Z8,Z9075 Units With Airfoil Fan* LEGEND *If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from T able 30C . NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. F or return fan (48Z6,Z8 a[...]

24 Table 19 — Fan Performanc e — 48ZG,ZN,ZT,ZW,Z6, Z8 an d 50ZG,ZN,ZT,ZW,ZX, ZZ,Z2,Z 3,Z6,Z7,Z8,Z9090 Units With Forward-Curved Fan* LEGEND *If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from T able 30C . NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. F or return fan (4[...]

25 Table 20 — Fan Performanc e — 48ZG,ZN,ZT,ZW,Z6, Z8 and 50ZG,ZN,ZT,ZW,ZX, ZZ,Z2 ,Z3,Z6,Z7,Z8,Z9090 Units With Airfoil Fan* LEGEND *If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from T able 30C . NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. F or return fan (48Z6,Z8 a[...]

26 Table 21 — Fan Performanc e — 48ZG,ZN,ZT,ZW,Z6, Z8 an d 50ZG,ZN,ZT,ZW,ZX, ZZ,Z2,Z 3,Z6,Z7,Z8,Z9105 Units With Forward-Curved Fan* LEGEND *If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from T able 30C . NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. F or return fan (4[...]

27 Table 22 — Fan Performanc e — 48ZG,ZN,ZT,ZW,Z6, Z8 and 50ZG,ZN,ZT,ZW,ZX, ZZ,Z2 ,Z3,Z6,Z7,Z8,Z9105 Units With Airfoil Fan* LEGEND *If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from T able 30C . NO TES: 1. F an performance is based on wet coils and clean 2-in. filters. 2. F or return fan (48Z6,Z8 a[...]

28 Table 23 — Fan Performance — Stan dard Capacity Power Exhau st Size 030-050 Units Size 055-155 Units Bhp — Brake Horsepo wer Table 24 — Fan Performance — Ret urn/Exhaust Fan (48Z6,Z8 an d 50Z6,Z7,Z8,Z9075-105 Units) NO T E: The 48Z6,Z8 and 50Z6,Z7,Z8,Z9 units come standar d with economizer and exhaust/return power ex haust. AIRFLO W (C[...]

29 Table 25 — Fan Performance — High-Capac ity Power Exhaust (48ZT,ZW075-1 05 and 50ZT,ZW,ZX, ZZ) LEGEND Bhp — Brake Horsepo wer AIRFLO W (Cfm) A V AILABLE EXTERNAL ST A TIC PRESSURE (in. wg) 0.2 0.4 0.6 0.8 1.0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 14,000 436 3.79 480 4.28 520 4.86 557 5.48 592 6.11 16,000 486 5.37 526 5.86 563 6.47 597 7.[...]

30 Table 26 — Supply Fan Motor Limitations (Sizes 030 -070) LEGEND NO TES: 1. Extensive motor and electrical testing on the Carrier units has ensured that the full horsepow er range of the motor can be uti- lized with confidence. Using y o u r f an motors up to the horse- power r atings shown in the Motor Limitations table will not result in nuis[...]

31 Table 28 — High-Capacit y Power Exhaust Syste ms Motor Limitations ( 48ZT,ZW and 50ZT,ZW,ZX,ZZ Units ) LEGEND NO TES: 1. Extensive motor and electrical testing on the Carrier units has ensured that the full horsepower r ange of the motor can be utili zed with confidence. Using y our fan motors up to the horsepower ratings shown in the Motor Li[...]

32 T able 30A — Component Pressure Dr ops (in. wg) (Size 030- 050 Units) *Bag filter cfm limit is 25,000. †A vailable on vertical retu r n and discharge units only . Table 30B — Component Pressu re Drops (in. wg) (Size 055- 070 Unit s) *Bag filter cfm limit is 25,000. †A vailable on vertical retu r n and discharge units only . Table 30C —[...]

33 CONTROLS Q UIC K ST ART The following section will provide a quick user guide to set- ting up and configuring the Z Series units with Comfort Link™ controls. See Basic Control Usage section on page 4 for infor- mation on operating the control. T w o-Stage Constant V olume Units with Mechanical Thermostat — T o configure the unit, per- form t[...]

34 4. See the Economizer Options section on this page for ad- ditional economizer option configurations. 5. See the Exhaust Options section on this page for addition- al exhaust option configurations. Multi-Stage Constant V olume Units with Space Sensor — T o configure the unit, perform the following: 1. Under Configuration → UNIT → C.TYP , s[...]

35 Configuration → BP → BF .CF =2 (Modulating Power Exhaust with T wo LEN Actuators Option) — For modulat- ing exhaust, the Configuration → BP submenu, configure the following: Under Configuration → BP → B.V .A the following configu- rations may be adjusted: BP .FS VFD/Act. Fire Speed/Pos. BP .MN VFD/Act. Min. Speed/Pos. BP .1M BP 1 Act[...]

36 Programming Operating Schedules — The Comfort Link™ controls will accommodate up to eight dif fer- ent schedules (Periods 1 through 8), and each schedule is assigned to the desired days of the week. Each schedule includes an occupied on and of f time. As an example, to set an occupied schedule for 8 AM to 5 PM for Monday through Friday , the[...]

37 Table 31 — Service Te st ITEM EXP ANSION RANGE UNITS POINT WRITE ST A TUS TEST Service T est Mode ON/OFF MAN_CTRL ST OP Local Machine Disable YES/NO UNITST OP config S.STP Soft Stop Request YES/NO SOFTST OP f orcible F AN.F Supply F an Request YES/NO SF ANFORC f orcible INDP TEST INDEPENDENT OUTPUTS → HUM.R Humidifier Relay ON/OFF HUMR_TST ?[...]

38 Service T est Mode Logic — Operation in the Service T est mode is sub-menu specific except for the INDP sub- menu. Leaving the sub-menu while a test is being performed and attempting to start a different test in the new sub-menu will cause the previous test to term inate. When this happens, the new request will be delayed fo r 5 seconds. For e[...]

39 THIRD P ARTY CONTROL Thermostat — The method of control would be through the thermostat inputs: Y1 = first stage cooling Y1 and Y2 = first and second stage cooling W1 = first stage heating W1 and W2 = first and second stage heating G = supply fan Alarm Output — The alarm output (not available when the unit is configured for hot gas reheat), [...]

40 If the switch is closed, the IAQ reading will be high and the economizer will be commanded to the Economizer Minimum Position. If the outdoor airflow station is installed and outdoor air cfm can be read, the economizer will move to the Econo- mizer Minimum Flow CFM control setting. These settings may be adjusted and are located here: Configurati[...]

41 the control are located at the local displays under Operating Modes . See T able 32. Table 32 — Operat ing Modes Displa y Table Currently Occupied ( OCC ) — This variable displays the cur- rent occupied state of the unit. T imed Override in Effect ( T. O V R ) — This variable displays if the state of occupancy is currently occupied due to [...]

42 HV AC Mode — VENT (09) — This is a normal operation mode where no heating or cooli ng is required and outside air is being delivered to the space to control IAQ levels. HV AC Mode — HIGH COOL (10) — This is a normal cool- ing mode where a high cooling demand is required. HV AC Mode — LOW CO OL (1 1) — This is a normal cool- ing mode [...]

43 Sy stem Mode = OFF? Inputs -> FIRE -> FSD in al ar m ? HVAC Mode = OFF (Fire Shutdow n) HVAC Mode = O FF (Disabled) Un it no t in fa c t o ry test AN D fire-smoke control mode is alarming? Inputs -> FIRE -> PRES in ala rm? HVAC Mode = OFF (Pressurization) Inputs -> FIRE -> EVAC in ala rm? HVAC Mode = OFF (Evacuation ) HVAC Mode[...]

44 Table 33 — Unit Configuration Fan Mode ( CV .FN ) — The Fan Mode configuration can be used for machine control types ( Configuration → UNIT → C.TYP ) 3, 4, 5, and 6. The Fan Mode variable establishes the operating seque nce for the supply fan during occupied periods. When set to 1 (Continuous), the fan will operate continuously during oc[...]

45 50 Hertz Unit? ( 50.HZ ) — Some units are designed to run at 50 Hertz instead of 60 Hertz. Ma ke sure this configuration matches the frequency called out by the model number of the unit. This is important as the cooling stage tables are directly determined based on both the SIZE and 50.HZ configurations. MA T Calc Config ( MA T .S ) — This c[...]

46 COOL or a HIGH COOL mode and maintain a low or high cool supply air set point. • C.TYP = 4 (TST A T – 2 STG) This configuration will force the control to monitor the ther- mostat inputs to make a determination of mode. • C.TYP = 5 (SP T – MUL TI) This configuration will force the control to monitor a space temperature sensor to make a de[...]

47 Table 35 — Setpoints Table 36 — Supply Air Reset Configuration Table 37 — Cooling Configuration CSB A2 Feedback Alarm ( CS.A2 ) — This configuration is used to enable or disable the compressor A2 feedback alarm (105 ton size units only). This configuration must be enabled at all times for 105 ton units. CSB B1 Feedback Alarm ( CS.B1 ) ?[...]

48 V A V Cool Mode Selection during the Occupied Period ( C.TYP = 1,2 and Operating Modes → MODE → OCC =ON) — There is no dif ference in the selection of a cooling mode for either V A V -RA T or V A V -SP T in the occupied period. The actual selection of a cool mode, for both control types, is based upon the controlling return-air temperature[...]

49 Operating modes are under Operating Modes → MODE . Cool Mode Evaluation Logic — The first thing the control determines is whether the unit is in the occupied mode ( OCC ) or is in the temperature compensated start mode ( T. C . S T ). If the unit is occupied or in temperature compensated start mode, the occupied cooling set point ( OCSP ) is[...]

50 COOL MODE DIAGNOSTIC HELP — T o qu ic kl y de te r- mine the current trip points for the cooling modes, the Run Status sub-menu at the local display allows the user to view the calculated start and stop points for both the cooling and heating trip points. The following sub-menu can be found at the local display under Run S tatus → TRIP . See[...]

51 Table 40 — Run Statu s Cool Displa y SumZ Operation — The SumZ algorithm is an adaptive PID style of control. The PID is programmed within the control and the relative speed of staging can only be influenced by the user through the adjustment of the Z.GN configuration, described in the reference section. The capa city control algorithm uses [...]

52 MA T Calc Config ( MA T .S ) — This configuration gives the user three options in the processing of the mixed-air tempera- ture (MA T) calculation: • MA T .S = 0 The control will not attempt to learn MA T over time. The control will simply calculate MA T based on the position of the economizer , outside and return air temperature, linearly .[...]

53 Table 41 — Deman d Limit Configuration CCN Loadshed Demand Limiting ( DM.L.S = 3) — If the unit has been configured for CCN Loadshed Demand Limiting, then the demand limiting variable ( Run S tatus → COOL → DEM.L ) is controlled via CCN commands. The relevant configurations for this type of demand limiting are: Loadshed Group Number ( SH[...]

54 If the economizer is able to provi de free cooling at the start of a cooling session, the mechanical cooling algorithm (SumZ), checks the economizer ’ s current position ( Run S tatus → ECON → ECN.P ) and compares it to the economizer ’ s maximum position ( Configuration → ECON → EC.MX ) – 5%. Once the economizer has opened beyond [...]

55 Heating Control T ype ( HT .CF ) — The heating control types available are selected/configured with this variable. 0 = No Heat 1 = Electric Heat 2 = 2 Stage Gas Heat 3 = Staged Gas Heat 4 = Hydronic Heat Heating Supply Air Set Point ( HT .SP ) — In a low heat mode for either staged gas or hydronic heat, this is the supply air set point for h[...]

56 Related operating modes are under Operating Modes → MODE . The first thing the control determines is whether the unit is in the occupied mode ( OCC ) or in the temperature compen- sated start mode ( T. C . S T ). If the unit is occupied or in tempera- ture compensated start mode, the occupied heating set point ( OHSP ) is used. In all other ca[...]

57 Table 45 — Hydronic Heat Configuration Hydronic Heat ing Control Propo rtional Gain ( HW .P ) — This configuration is the proportional term for the PID which runs in the HV AC mode LOW HEA T . Hydronic Heating Control Integral Gain ( HW .I ) — This configuration is the integral term for the PID which runs in the HV AC mode LOW HEA T . Hydr[...]

58 Table 46 — Stag ed Gas Configur ation *Some configurations are model number dependent. Heat Control Derv . Gain ( HT .D ) — This configuration is the derivative term for the PID which runs in the HV AC mode LOW HEA T . Heat PID Rate Config ( HT .TM ) — This configuration is the PID run time rate. Staged Gas Heating Logic If the HV AC mode [...]

59 Limit Switch T emperature Monitoring ( LIM.M ) — V ariable air volume applications in the low heat or tempering mode can experience low airflow and as a result it is possible for nuisance trips of the gas heat limit switch, thereby shutting off all gas stages. In order to achieve consistent heating in a tempering mode, a thermistor ( Te m p e [...]

60 Table 49 — Staged Gas Heat Control Steps ( HT.ST = 1) Table 50 — Staged Gas Heat Control Steps ( HT.ST = 3) Table 51 — IGC LED Indicators NO TES: 1. There is a 3-second pause between error code displays . 2. If more than one error code exists , all applicab le error co des will be display ed in numerical sequence. 3. Error codes on the IGC[...]

61 Setting up the System — The relevant set points for temper- ing are located at the local display under Setpoints : Operation — First, the unit must be in a vent mode, a low cool, or a high cool HV AC mode to be considered for a tempering mode. Secondly , the tempering mode is only allowed when the rooftop is configured for staged gas or hydr[...]

62 Table 52 — Static Pressure Contr ol Configuration Static Pressure Configuration ( SP .CF ) — This variable is used to configure the use of Comfort Link™ controls for static pressure control. It has the following options: 0 (None) — No static pressure control by Comfort Link controls. This would be used for a constant volume (CV) applicat[...]

63 slowing down the fan has the additional benefit of working around dehumidification concerns. Static Pressure Reset Economizer Position ( SP .EC ) — This option ef fectively resets ECONOMIN to fully occupied venti- lation position, to account for the drop in static pressure during static pressure reset control . Th e static pressure reset for t[...]

64 determine the actual set point required and deliver the required airflow to every terminal under the current load conditions. As the conditions and airflow requirements at each terminal change throughout the operating period, so will SP .RS and the unit’ s effective stat ic pressure set point. In the unlikely chance that both static pressure r[...]

65 Table 55 — Dirty F ilter Switch Poi nts Monitoring of the filter status switch is disabled in the Service T est mode and when the supply fan is not commanded on. If the fan is on and the unit is not in a test mode and the filter status switch reads “dir ty” for 2 continuous minutes, an alert is generated. Recovery from this alert is done t[...]

66 Table 56 — Economizer Configur ation Table The enthalpy switch may also be field converted to a dif fer- ential enthalpy switch by field installing an enthalpy sensor (33CSENTSEN or HH57ZC001). The enthalpy switch/receiv- er remains installed in its factory location to sense outdoor air enthalpy . The additional enthalpy sensor (33CSENTSEN) is[...]

67 outdoor air dewpoint temperature and will compare this temperature against the outside air dewpoint temperature limit configuration ( Configuration → ECON → O.DEW ). If the outdoor air dewpoint temperature is greater than O.DEW , f ree cooling will not be allowed. Fig. 10 shows a horizontal limit line in the custom curve of the psychrometric[...]

68 Control Angle A larm Configuration — The economizer ac- tuator determines its end stops through a calibration at the factory . Field-installed actuato rs may be calibrated in the Service T est mode. When an actuator learns its end stops through calibration, it also deter mines its control angle. The actuator will resolve this control angle and[...]

69 The economizer ’ s reported and commanded positions are also viewable, as well as out side air temperature, relative humidity , enthalpy and dew point temperature. The following information can be found under the Local Display Mode Run S tatus → ECON . See T able 57. Economizer Control Point Determination Lo gic — Once the economizer is al[...]

70 BUILDING PRESSURE CONFIGURA TION — Th e bui ld- ing pressure configurations ar e found at the local display under Configuration → BP . Se e T able 58. Building Pressure Config ( BP .CF ) — This configuration se- lects the type of building pressure control. • BP .CF = 0, No building pressure control • BP .CF = 1, constant volume two-sta[...]

71 Table 58 — Building Pressure Confi guration *Some configurations are model number dependent. Configuration → BP → BP .CF = 2 (Modulating Po wer Exhaust) — Control is accomplished with two LEN communicating actuators in tandem and one exhaust fan relay . If building pressure ( Pressures → AIR.P → BP ) rises above the building pressure[...]

72 Controlling high-capacity power exhaust dif fers from nor- mal power exhaust in the following ways: • The integral term is not used. The percentile commanded position of the VFD is used instead. • A “clamp percent” configuration is added ( BP .CL ) to create a deadband that wi ll assist the algorithm in controlling the second po wer exha[...]

73 contact closure. Multiple smoke control inputs, sensed by the control will force the unit into a Fire Shutdown mode. FI R E S M OK E IN PU T S — These discrete inputs can be found on the local display under Inputs → FIRE . Fire Shutdown Mode — This m ode will cause an immediate and complete shutdown of the unit. Pressurization Mo de — Th[...]

74 damper position will never exceed the bounds specified by IAQ.M and EC.MN during IAQ control. If the building is occupied and the indoor fan is running and the differen tial between IAQ and OAQ is less than DAQ.L , the economizer will remain at IAQ.M . The economizer will not close completely . The damper position will be 0 when the fan is not r[...]

75 IAQ Discrete Input Config ( Configuratio n → IAQ → AQ.CF → IQ.I.C ) — This configuration is used to set the type of IAQ sensor . The following are the options: • IQ.I.C = 0 (No Discrete Input) — This is used to indicate that no discrete i nput will be used and the standard IAQ sensor input will be used. • IQ.I.C = 1 (IAQ Discrete I[...]

76 OAQ Low Referen ce ( Configuration → IAQ → AQ.S.R → OQ.R.L ) — This is the reference that will be used with a non-Carrier OAQ sensor that may have a different characteris- tic curve. It represents the CO 2 level at 4 mA. OAQ High Reference ( Configuration → IAQ → AQ.S.R → OQ.R.H ) — This is the reference that will be used with a [...]

77 Table 60 — Humidity Configuration Table 61 — Related Humidity Points OP E RA T I O N — For oper ation, PID control will be utilized. The process will run at the rate defined by the Configuration → HUMD → H.PID → HM.TM . The first part of humidity control tests the humidity control configuration and will turn on corresponding configur[...]

78 Table 62 — De humidification Configuration • D.SEL = 1 — The control will perform both dehumidifi- cation and reheat with modulati ng valve (hydronic). • D.SEL = 2 — The control will perform dehumidificatio n and reheat with staged gas only . • D.SEL = 3 — The control will perform both dehumidifi- cation and reheat with third pa rt[...]

79 deviation from the occupied cooling and heating set points. This will allow the control to start the unit so that the space is at conditioned levels when the occupied period starts. This is required for ASHRAE 90.1 compli ance. A space sensor is re- quired for non-linkage applications. SETTING UP THE SYSTEM — Th e se ttings for tempera- ture c[...]

80 Table 63 — CCN Configuration Alert Limit Configuration — The ALLM submenu is used to configure the alert limit set points. A list is shown in T able 64. SP T Low Alert Limit/Occ ( SP .L.O ) — If the space tempera- ture is below the configurable occupied SP T Low Alert Limit ( SP .L.O ), then Alert 300 will be generated and the unit will be[...]

81 Table 64 — Alert Limit Configurat ion Supply Duct Pressure High Alert Limit ( SP .H ) — If the unit is a V A V unit with a supply duct pressure sensor and the mea- sured supply duct static pressure is above the configurable SP High Alert Limit ( SP .H ), then Alert 311 will occu r . The unit will continue to run and the alert will automatica[...]

82 Table 65 — Sensor Trim Configurat ion The defaults for this switch logic section will not normally need changing. However , if a field-installed switch is used that is different from the Carrier switch, these settings may need adjustment. Settings for switch logic are found at the local displays under the Configuration → SW .LG submenu. See [...]

83 Table 67 — Di splay Co nfiguration Remote Contr ol Switch Input — Th e remote switch input is located on the RCB board and connected to TB201 terminals 1 and 2. The switch ca n be used for several remote control functions. See T able 68. Table 68 — Remote Switch Configuration Remote Input State ( Inputs → GEN.I → REMT ) — This is the[...]

84 TIME CLOCK CONFIGURA TION This section describes each T ime Clock menu item. Not every point will need to be configured for every unit. Refer to the Controls Quick Start section for more information on what set points need to be configured for different applications. The T ime Clock menu items are discussed in the same order that they are displa[...]

85 Table 70 — Time Clock Menu Daylight Savings Stop W eek ( DS.SP → SP .WK ) — Thi s is the stop week of the month for daylight savings. The week can be set from 1 to 5. Daylight Savings Stop Day ( DS.SP → SP .DY ) — This is the stop day of the week for daylight savings. The day can be set from 1 to 7 (Sunday=1, Monday=2, etc.). Daylight [...]

86 determining the resistance with unit shut down and thermistor disconnected from J8. Compare the values determined with the value read by the control in the T emperatures mode using the scrolling marquee display . T ransducer T roub leshooting — The electronic con- trol uses 2 suction pressure transducers to measure the suction pressure of circ[...]

87 Table 72 — Gas Heating Servi ce Analysis Table 73 — Electric H eat Service Anal ysis PROBLEM CAUSE REMED Y Burners Will Not Ignite. Activ e alarm. Check active alarms using Comfort Link™ scrolling marquee. No power to unit. Check po wer supply , fuses, wiring, and circuit breakers . No power to IGC (Integrated Gas Control). Check fuses and[...]

88 Table 74 — 10K Thermistor vs Resista nce (T55, T56, OAT, RAT, EDT, LAT Sensors) (F) TEMP (F) V O LTA G E DROP (V) RESIST ANCE (Ohms) –25 4.758 196,4 53 –24 4.750 189,6 92 –23 4.741 183,3 00 –22 4.733 177,0 00 –21 4.724 171,0 79 –20 4.715 165,2 38 –19 4.705 159,7 17 –18 4.696 154,3 44 –17 4.686 149,1 94 –16 4.676 144,2 50 ?[...]

89 Table 75 — 10K Thermisto r vs Resistance (T55 , T56, OAT, RAT, EDT, LAT Sensor) (C) Table 76 — Suction Pressure Transducer Pressure (psig) vs Voltage (SSP-A, SSP-B) PRESSURE (PSIG) V O LTA G E DRO P (V) PRESSURE (PSIG) V O LTA G E DROP (V) PRESSURE (PSIG) V O LTA G E DROP (V) PRESSURE (PSIG) VO LT AG E DROP (V) 0 0.290 34 1.436 68 2.582 102 [...]

90 Table 77 — Dischar ge Pressure Transduc er Pressure (psig ) vs Voltage For cing Inputs and Outputs — Many of variables may be forced both from the CCN and directly at the local display . This can be useful during diagnostic testing and also during operation, typically as part of an advanced third party control scheme. Please see Appendix A a[...]

91 Fig. 13 — IGC Service Analysis Logic LEGEND NO TE: Thermostat Fan Switch in the “A UTO” position. IDM — Induced-Draft Motor IGC — Integrated Gas Unit Controller[...]

92 Table 78 — Auto View of Run Status Display Table ECONOMIZER RUN ST A TUS — The Economizer Run Status display table provid es informa tion about the economizer and can be used to troublesh oot economizer problems. See T able 79. The current position, commanded position , and whether the econo- mizer is active can be display ed. All the disabl[...]

93 Table 79 — Economizer Ru n Status Display Table Table 80 — Cooling Information Display Tab le Table 81 — Mode Trip Helper Display Tab le CCN/LINKAGE DISPLA Y T ABLE — T h e C C N / L i n k a g e display table provides information on unit linkage. See T able 82. COMPRESSOR RUN HOURS DISPLA Y T ABLE — T h e Compressor Run Hours Display T[...]

94 Table 82 — CCN/Linkag e Display Tab le Table 83 — Compressor Run Hours Disp lay Table Table 84 — Compressor St arts Display Tabl e Table 85 — Software Version Numbers Display Table Alarms and Aler ts — There are a variety of different alerts and alarms in the system. T — Alert: Part of the unit is down, but the unit is still par- tia[...]

95 Table 86 — Alert and Alarm C odes ALARM OR ALERT NUMBER DESCRIPTION ACTION T AKEN BY CONTROL RESET METHOD T051 Circuit A, Compressor 1 F ailure Compressor lock ed off (after 3 strikes) Automati c then manual after 3 strikes A051 Circuit A, Compressor 1 Stuck On F ailure Compressor loc ked off Manual T052 Circuit A, Compressor 2 F ailure Compre[...]

96 Table 86 — Alert and Alarm Codes (cont) ALARM OR ALERT NUMBER DESCRIPTION ACTION T AKEN BY CONT ROL RESET METHOD T310 Supply Duct Static Pressure Below Limit Ale r t only A utomatic T311 Supply Duct Static Pressu re Abov e Limit Alert only A utomatic T312 Building Static Pressure Below Limit Alert only A utomatic T313 Building Static Pressure [...]

97 DIAGNOSTIC ALARM COD ES AND POSSIBLE CAUSES T051 (Circuit A, Compressor 1 Failure) T052 (Circuit A, Compressor 2 Failure) T055 (Circuit B, Compressor 1 Failure) T056 (Circuit B, Compressor 2 Failure) NOTE: These alerts only occur on units with a current sensor board (CSB) (48/50Z105 only). If the current sensor board reads OFF while the compress[...]

98 T073 (Outside Air T emperature Thermistor Failure) — Fail- ure of this thermistor ( Te m p e r a t u r e s → AIR.T → OA T ) will dis- able any elements of the control which requires its use. Econo- mizer control beyond the vent position and the calculation of mixed air temperature for the SumZ algorithm will not be pos- sible. Recovery fro[...]

99 T136 (Compressor A1 Lo w Differential Pressure) T137 (Compressor A2 Lo w Differential Pressure) T138 (Compressor B1 Low D if ferential Pressure) T139 (Compressor B2 Low D if ferential Pressure) — If the pressure dif ferential between the discharge and suction pres- sure transducers is less than 50 psig fo r more than 15 minutes when the circui[...]

100 override. Recovery is automatic. Reason for error is either a faulty sensor , wiring error , or damaged input on the MBB con- trol board. This error only occurs when the u nit is configured for minimum position override and a 4-20 mA signal is not present. T245 (Outside Air Cfm Sensor Failure) — If the outside air cfm sensor ( Inputs → CFM [...]

101 T316 (OA T Below Li mit ) — If the outside-air temperature measured by the OA T thermistor ( T emperatures → AIR.T → OA T ) is below the configurable OA T Low Alert Limit ( Con- figuration → ALLM → OA T .L ) for 5 minutes then the alert will be broadcast. T317 (OA T Above Limi t — If the outside-air temperature measured by the OA T [...]

102 T610 (Economizer Actuator Out of Calibrati on) A620 (IGV Actuator Out of Calibration) T630 (Humidifier Actuator Out of Calibrat ion) A640 (Heating Coil Actuator Out of Calibration) A650 (Bldg.Press. Actuator 1 Out of Calibrat ion) A660 (Bldg.Press. Actuator 2 Out of Calibrat ion) T670 (Economizer 2 Actuator Out of Calibration — Each of the Be[...]

103 Fig. 15 — T ypical P ower Schemati c (Sizes 030-050 Sho w n) a48-8408[...]

104 Fig. 16 — Main Base Boar d Input/Output Connect ions a48-8409[...]

105 Fig. 17 — RCB, ECB, CEM, SCB Input/Output Connections a48-8410[...]

106 Fig. 18 — T ypi cal Gas Heat Unit Control Wiring (48Z055-105 Units Shown) a48-841 1[...]

107 Fig. 19 — T ypical El ectric Heat Unit Contr ol Wiring (50Z055- 105 Units Sho w n) a50-8248[...]

108 Fig. 20 — T ypical P ower Wir ing (115-V) (48Z Uni ts) a48-8412[...]

109 Fig. 21 — T ypical P ower Wiring (115-V) (50Z Units) a50-8249[...]

110 Fig. 22 — T ypical Ga s Heat Sectio n (Size 055-105 U nits Shown) a48-8413[...]

111 Fig. 23 — Component Arrangement (Size 030-050 Uni ts)[...]

112 Fig. 24 — Component Arrangement (Size 055-070 Units)[...]

113 Fig. 25 — Component Arrangement (Si ze 075-105 Units)[...]

114 LEGEND FOR FIG. 15-25 ROOFTOP CONTROL BOARD (RCB) — T h e R CB ha s additional inputs and outputs required for the control of the unit. All units have an RCB board. See Fig. 27. The board has 9 inputs and 8 outputs. Details can be found in T able 88. The RCB board is located in the main control box. ECONOMIZER CONTROL BOARD (ECB) — Th e EC [...]

115 Table 87 — Main Control Board (MBB) Inputs and Outputs POINT NAME POINT DESCRIPTION I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT ST A TE INPUTS IGCIFO IGC IFO inpu t DI1 J6, 3-4 4 0 = 24vac, 1= 0vac FSD Fire Shutdown Switch DI2 J6, 5-6 6 0 = 24vac, 1= 0vac G Thermostat G input DI3 J7, 1-2 2 0 = 24v ac, 1= 0vac W2 Thermostat W2 inp[...]

116 Table 88 — Rooftop Control Board (RCB) Inpu ts and Output s Table 89 — Economizer Control Board (ECB) Inputs and Outputs Table 90 — Staged Gas Co ntrol Board (SCB) Inputs and Outputs POINT NAME POINT DESCRIPTIO N I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT ST A TE INPUTS RMTIN Remote Input State DI1 J4, 1-2 2 24V AC = 1, 0V A[...]

117 CONTROL EXP ANSION MODULE (CEM) — The optional CEM is used to provide inputs for demand limiting, remote set point and other optional inputs typically needed for ener gy management systems. See Fig. 29. On CCN systems these inputs can be interfaced to through the CCN communications. It is located in the main control box. The CEM also has inpu[...]

118 Table 91 — Control Exp ansion Module (CEM) In puts and Outputs POINT NAME POINT DE SCRIPTIO N I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT ST A TE INPUTS DHDISCIN Dehumidify Switch Input DI 1 J7, 1-2 2 0 = 24vac, 1= 0vac DMD_SW1 Demand Limit Swit ch 1 DI 2 J7, 3-4 4 0 = 24vac , 1= 0vac DMD_SW2 Demand Limit Swit ch 2 DI 3 J7, 5-6 6[...]

119 Table 92 — Field Terminal Connections LEGEND BO ARD NO . TERMINAL NUMBER DESCRIPTION TYPE TB-1 - PO WER CONNECTION OR DISCONNECT (in Main Control Bo x) 11 L1 po wer su pply 208-230/460/5 75/380/-3-60, 4 00-3-50 TB1 12 L2 pow er supply 208 -230/460/575/ 380/-3-60, 400-3 -50 13 L3 po wer su pply 208-230/460/5 75/380/-3-60, 4 00-3-50 NEUTRAL (in[...]

120 Table 92 — Field Terminal Connections ( cont) LEGEND Table 93 — IGC Board Inputs and Outputs SC R OL L I NG MA R Q UE E — This device is the keypad in- terface used to access the control information, rea d sensor values, and test the unit. The scrolling marquee display is a 4-key , 4-character , 16-segment LED display as well as an Alarm [...]

121 Table 94 — VFD Terminal Designations POWER EXHAUST — The uni ts ca n be equ ip pe d w it h an optional power exhaust system. The power exhaust fans are two belt-drive forward-curved fans. On non-modulating sys- tems, the fans are staged by the Comfort Link™ controls based on the economizer damper position. For modulating (CV or V A V) app[...]

122 Table 95 — Thermistors and Unit Operation Co ntrol Pressure Tra nsducers LEGEND F AN S T A T US S WI T CH — The units can be equipped with an optional fan status switch that will monitor the pressure rise across the indoor fans. RETURN AIR CO 2 SE N SO R — The unit can be equipped with a return air IAQ CO 2 sensor that is used for the dem[...]

123 ACCESSOR Y NA VIGA TOR™ DISP LA Y — Th e ac ce ss o- ry handheld Navigator display can be used w ith the 48/50Z series units. See Fig. 32. The Navigator display operates the same way as the scrolling marquee device. The RCB and ECB boards contain a second LEN port than can be used with the handheld Navigator display . CONTROL MODULE COMMUNI[...]

124 NETWORK OPTIONS REMOTE CCN SITE AUTODIAL GA TEWA Y NON CARRIER HV AC EQUIPMENT TERMINAL SYSTEM MANAGER TCU ROOFTOP UNIT DA V AIR TERMINAL TCU TCU DA V AIR TERMINAL AIR DISTRIBUTION-DIGIT AL AIR VOLUME CONTROL (DA V) DA V F AN POWERED MIXING BOX TO ADDITIONAL TERMINALS HEA TING/COOLING UNITS BUILDING SUPERVISOR ROOFTOP UNIT CL ROOFTOP UNIT CL RO[...]

125 SER VICE Service Access — All unit components can be reached through clearly labeled hinged access doors. These doors are not equipped with tiebacks, so if heavy duty servicing is need- ed, either remove them or prop them open to prevent accidental closure. Each door is held closed with 3 latches. The latches are secured to the unit with a si[...]

126 Fig. 35 — Typical Filter Drier and Liquid Serv ice Valve Access Fig. 34 — Door Latch Fig. 36 — Modulating Power Exhaust Motor Access (Bot h Sides) NO TE: High heat consists of secti ons 1 and 2. Low heat consists of section 1 only . Fig. 37 — G as Section De tail, Sizes 03 0-050 NO T E: High heat consists of secti ons 1-3. Low heat cons[...]

127 CERAMIC BAFFLE CLIP HEA T EXCHANGER TUBES Fig. 39 — Burner Section Detail NO TE: One baffle and clip will be in each upper tube of the heat exchanger . Fig. 40 — Removing Heat Exchanger Ceramic Baffles and Clips INLET GUIDE V ANE MOTOR Fig. 41 — Combustion Blower Removal Fig. 42A — Inlet Guide Vane Motor (Sizes 055-070) Fig. 42B — Inl[...]

128 Adjustments RETURN/EXHAUST F AN MOTOR PLA TE Adjust using a 3 / 4 -in. wrench on the adjusting bolts: 1. Loosen holddown bolts. (See Fig. 43). 2. T urn the adjusting bolts to move the motor mounting plate toward or away from the fan to loosen or tighten the belts. Make the same number of turns to each bolt. 3. Retighten holddown bolts. SUPPL Y [...]

129 CONDENSER F AN ADJUSTME NT (Sizes 05 0,070,075 W ith Hi gh-Capacity Evaporator Coil Option) — Eac h fa n is supported by a formed wire mount bolted to a fan deck and covered with a wire guard. The exposed end of the fan motor shaft is protected from weather by grease. If the fan motor must be removed for service or replacem ent, be sure to re[...]

130 Lubrication CO M PR E SS O RS — Each compressor is correctly char ged at the factory . Refer to 06D an d 06E Compressor Service Manu- als if additional information regarding compressor lubrication system is required. F AN SH AF T BE AR I NG S — Lubricate fan shaft bearings at least once a year with suitable bearing greas e. Extended grease [...]

131 Gas System Adjustment (48Z Onl y) GA S V A L VE A DJ U ST M EN T — The gas valve opens and closes in response to the unit control. When power is supplied to valve terminals D1 and C2, the main valve opens to its preset position. The regular factory setting is stamped on the valve body (3.3 in. wg). T o adjust regulator: 1. Set thermostat at s[...]

132 EV APORA T OR-F AN MOTOR PR OTECTION — A ma nu - al reset, calibrated trip, magn etic circuit breaker protects against overcurrent. Do not bypass connections or increase the size of the breaker to correct trouble. Determine the cause and correct it before resetting the breaker . CONDENSER-F AN MOTOR PROTECTION — E a c h condenser -fan motor[...]

133 APPENDIX A — LOCAL DISPLA Y T ABLES MODE — RUN STATUS ITEM EXP ANSION RANGE UNITS CCN POINT WRITE ST A TUS P AGE NO . VIEW A UT O V IEW OF R UN ST A TUS → HV AC ascii string spelling out the hvac modes string 90,92 → OCC Occupied ? YES/NO OCCUPIED forcible 90,92 → MA T Mixed Air T emperature dF MA T 90,92 → EDT Evaporator Discharge [...]

134 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — SERVICE TEST ITEM EXP ANSION RANGE UNITS CCN POIN T WRITE ST A TUS P AGE NO . TEST Service T est Mode ON/OFF MAN_CTRL 36,37 STOP Loca l Machine Disab le YES/NO UNITST OP config 36,37 S.STP Soft Stop Request YES/NO SOFTSTO P forci ble 36,37 F AN.F Supply F an Request YES/NO SF ANFORC forcib l[...]

135 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — TEMPERATURES MODE — PRESSURES MODE — SETPOINTS ITEM EXP ANSION RANGE UN ITS CCN POINT WRITE ST A TUS AIR.T AIR TEMPERA TURES → CTRL CONTROL TEMPS → CTRL → EDT Evapor ator Discharge Tmp dF EDT → CTRL → LA T Leaving Air T em perature dF LA T → CTRL → MA T Mix ed Air T emperat[...]

136 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — INPUTS *The displa y text changes depending o n the remote s witch configuration ( Configuration → UNIT → RM.CF ). If RM.CF is set to 0 (No Remote Switch), then the displa y text will be “On” or “Off. ” If RM.CF is set to 1 (Occupied/Unoccupied Switch), then the displa y text wil[...]

137 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — OUTPUTS MODE — CONFIGURATION ITEM EXP ANSION RANGE UNITS CCN POINT WRITE ST A TUS F ANS FA N S → S.F AN Supply F an Relay ON/OFF SF AN → S.VFD Supply Fan VFD Speed 0-100 % SF AN_VF D → E.VFD Exhaust F an VFD Speed 0-100 % EF AN_VFD → P. E . 1 Po wer Exhaust Relay 1 ON/OFF PE1 → P[...]

138 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — CONFIGURATION (cont) ITEM EXP ANSION RANGE UNITS CCN POINT DEF AUL T P AGE NO . EDT .R EV AP .DISCHR GE TEMP RESET → RS.CF EDT Reset Configuration 0 - 3 (multi-text strings) EDRS TCFG 2 46,47 → RTIO Reset Ratio 0 - 10 RTIO 3 46,47 → LIMT Reset Limit 0 - 20 deltaF LIMT 10 46,47 → RES.[...]

139 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — CONFIG URATION (cont) ITEM EXP ANSION RANGE UNITS CCN POINT DEF AUL T P A GE NO. BP BUILDING PRESS. CONFIGS → BP .CF Building Pre ss. Config 0 - 5 (multi-text strings) BLDG_CFG 0 70,71 → BP .S Building Pre ssure Sensor Enable/Disable BPSENS Disable 70,71 → BP .R Bldg. Press. (+/-) Rang[...]

140 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — CONFIGURATION (cont) ITEM EXP ANSION RANGE UNITS CCN POINT DEF AUL T P A GE NO. HUMD HUMIDITY CONFIGURA TION → HM.CF Humidifier Control Cfg. 0 - 4 HUMD_CFG 0 76,77 → HM.SP Humidifier Setpoint 0 - 100 % HUSP 40 76,77 → H.PID HUMIDIFIER PI D CONFIGS → H.PID → HM.TM Humidifier PID Run[...]

141 APPENDIX A — LOCAL DISPLA Y T ABLES (cont) MODE — TIMECLOCK MODE — OPERATING MODES MODE — ALARMS A CRONYM NAME RANGE U NITS CNN POINT DEF AUL TS P A GE NO. TIME TIME OF DA Y → HH.MM Hour and Minut e 00:00 TIME 84,85 DA T E MONTH,D A TE,D A Y AND YEAR → MNTH Month of Y ear multi-text st rings MO Y 84,85 → DOM Da y of Month 0-31 DOM[...]

142 APPENDIX B — CCN T ABLES All Z series units with Comtfort Link™ controls have a port for interface with the Carrier Comfort Network ® (CCN) sys- tem. On TB3 there is a J1 1 jack which can be used for tempo- rary connection to the CCN network o r to computers equipped with CCN software like the Service T ool. Also on TB3 there are screw con[...]

143 APPENDIX B — CCN T ABLES (cont) STATUS DISPLAY TABLES (cont) T ABLE DISPLA Y NAME RANGE UN ITS POINT NAME WRIT E ST A TUS ECONOMZR Economizer Act.Curr .P os. % ECONOPOS Economizer 2 Act.Curr .P os. % ECON2POS Economizer Act.Cmd.P os. % ECONOCMD forcible Economizer Activ e ? ECACTIVE Economizer Control P oint dF ECONCPNT Outside Air T emperatu[...]

144 APPENDIX B — CCN T ABLES (cont) STATUS DISPLAY TABLES (cont) T ABLE DIS PLA Y NAME RANGE UNITS POINT N AME WRITE ST A TUS TEMPS Air T emp Lvg Supply F an dF SA T Return Air T e mperature dF RA T forcible Outside Air T emperature dF OA T forcib le Space T emperature dF SPT forcib le Space T emperature Offset ^F SPT O forcib le Staged Gas LA T [...]

145 APPENDIX B — CCN T ABLES (cont) SET POINT TABLE CONFIG TABLES T A BLE DISPLA Y NAME RANGE UNIT S POINT NAME DEF A UL T SET_PNT Occupied Heat Setpoint 40-99 dF OHSP 68 Occupied Cool Setpoint 40-99 dF OCSP 75 Unoccupied Heat Setpoint 40-99 dF UHSP 55 Unoccupied Cool Setpoint 40-110 dF UCSP 90 Heat-Cool Setpoint Gap 2-10 deltaF HCSP_GAP 5 V A V [...]

146 APPENDIX B — CCN T ABLES (cont) CONFIG TABLES (cont) SERVICE-CONFIG TABLES T ABL E DISPLA Y NAME RANGE UNITS POINT NAME DEF A UL T SCHEDO VR Schedule Number 0-99 SCHEDNUM 0 Accept Global Holiday s? Y es/No HOLIDA YT No Override Time Limit 0-4 hours OTL 1 Timed Override Hours 0-4 hours OVR_EXT 0 Accepting an Override: SPT Override Enabled ? Y [...]

147 APPENDIX B — CCN T ABLES (cont) SERVICE-CONFIG TABLES (cont) T A BLE DISPLA Y NAME RANGE U NITS POINT NAME DEF AUL T BP__ (cont) Bldg.Pres.PID Run Rate 5 - 120 sec BPIDR A TE 10 Bldg.Press. Prop . Gain 0 - 5 BLDGP_PG 1 Bldg.Press. Integ. Gain 0 - 2 BLD GP_IG 1 Bldg.Press. Deriv . Gain 0 - 5 BLD GP_DG 0.5 BP 1 Serial Number 1 0 - 255 BP_1_SN1 [...]

148 APPENDIX B — CCN T ABLES (cont) SERVICE-CONFIG TABLES (cont) T AB LE DISPLA Y NAME RANGE UNITS POIN T NAME DEF A UL T ECON Economizer Installed ? Y es/No ECON_ENA Y es Econ. Act.2 Installed ? Y es/No ECON_TWO No Economizer Min.P osition 0 - 100 % ECONOMIN 5 Economizer Max.P osition 0 - 100 % EC ONOMAX 98 Economzr trim for sumZ ? Y es/No ECONT[...]

149 APPENDIX B — CCN T ABLES (cont) SERVICE-CONFIG TABLES (cont) T A BLE DISPLA Y NAME RANGE U NITS POINT NAME DEF AUL T IA Q_ Economizer Min.P osition 0 - 100 % ECONOMIN 5 IAQ Demand V ent Min.P os. 0 - 100 % IAQMINP 0 Economizer Min.Flow 0 - 20000 CFM OACFMMAX 2000 IAQ Demand V ent Min.Flow 0 - 20000 CFM OACFMMIN 0 Econ.Min.Flow Deadband 200 - [...]

150 APPENDIX B — CCN T ABLES (cont) SERVICE-CONFIG TABLES (cont) MAINTENANCE DISPLAY TABLES T ABLE DISPLA Y NAME RANGE UNITS POINT NAME D EF A UL T UNIT Machine Control T ype 1-6 C TRL TYPE 4 F an Mode (0=auto , 1=cont) 0-1 F AN_MODE 1 Remote Switch Config 0 - 3 RMTINCFG 0 CEM Module I nstalled Y es/No CEM_BRD No T emp.Cmp .Str t.Cool F actr 0-60[...]

151 APPENDIX B — CCN T ABLES (cont) MAINTENANCE DISPLAY TABLES (cont) T ABLE DISPLA Y NAME RANGE UNITS POINT NAME WRITE ST A TUS COMPRESR (cont) Enable Co mpressor B1 Enable/Disabl e CMPB1ENA config Compressor B 2 Relay On/Off CMPB2 Compressor B 2 Feedback On/Off CSB_B2 Curr .Se ns.Brd. B2 Status ascii CSBB2ASC CSB B2 Feedback Alarm Enable/Disabl[...]

152 APPENDIX B — CCN T ABLES (cont) MAINTENANCE DISPLAY TABLES (cont) T AB LE DISPLA Y NA ME RANGE UNITS POINT NAME WRITE ST A TUS EC_DIA G Economizer Active ? Y es/No ECACTIVE Conditions which prevent economizer being active: Econ Act. Unav aila ble? Y es/No ECONUNA V Econ 2 Act. Unav ailable? Y es/No ECN2UNA V Enth.Switch Read High ? Y es/No EN[...]

153 APPENDIX B — CCN T ABLES (cont) MAINTENANCE DISPLAY TABLES (cont) T AB LE DISPLA Y NA ME RANGE UNITS POINT NAME WRITE ST A TUS LEN_A CTU Economizer Act.Curr .P os. 0-100 % ECONOPOS Economzr 2 Act.Curr . P os. 0-10 0 % ECON2POS Economizer Act.Cmd.P os. 0-100 % ECONOCMD forcible IGV Actuator Current P os. 0-10 0 % IGV_RPOS IGV Actuator Command [...]

154 APPENDIX B — CCN T ABLES (cont) MAINTENANCE DISPLAY TABLES (cont) T AB LE DISPLA Y NA ME RANGE UNITS POINT NAME WRITE ST A TUS PRESBLDG Building Pressure "H2O BP Return Air CF M CFM RACFM Supply Air CFM CFM SACFM P ower Exhaust Rela y 1 On/Off PE1 P ower Exhaust Rela y 2 On/Off PE2 BP 1 Actuator Curr .Pos . % BP1_RPOS BP 1 Command P osit[...]

155 APPENDIX B — CCN T ABLES (cont) MAINTENANCE DISPLAY TABLES (cont) T ABLE DISPL Y NAME RANGE UNITS POINT NAME WRITE ST A TUS SYSTEM Reset All Current Alarms Y es/No ALRESET config Reset Alarm Histor y Y es/No ALHISCLR config Reset the De vice Y es/No RESETDEV config Local Machine Disab le Y es/No UNITSTOP config Soft Stop Request Y es/No SOFTS[...]

156 APPENDIX B — CCN T ABLES (cont) TIME SCHEDULE CONFIG TABLE Allowable Entries: Da y not selected = 0 Day selected = 1 APPENDIX C — UNIT ST A GING T ABLES STAGING SEQUENCE — SIZE 030 UNITS — 60 Hz LEGEND STAGING SEQUENCE — SIZE 030 UNITS — 50 Hz LEGEND STAGING SEQUENCE — SIZE 035 UNITS LEGEND D A Y FLA GS MTWTFSSH OCCUPIED TIME UNOC[...]

157 APPENDIX C — UNIT ST A GING T ABLES (cont) STAGING SEQUENCE — SIZE 040 UNITS — 60 Hz LEGEND STAGING SEQUENCE — SIZE 040 UNITS — 50 Hz LEGEND STAGING SEQUENCE — SIZE 050 UNITS LEGEND STAGING SEQUENCE — SIZE 055 UNITS — 60 Hz LEGEND CIRCUIT A ST A GE COMPRESSOR OR UNLO ADER PERCENT a1 u1 u2 a2 b1 u3 u4 b2 Lead 0 00000000 0 % 1 110[...]

158 APPENDIX C — UNIT ST A GING T ABLES (cont) STAGING SEQUENCE — SIZE 055 UNITS — 50 Hz LEGEND STAGING SEQUENCE — SIZE 060 UNITS — 60 Hz LEGEND STAGING SEQUENCE — SIZE 060 UNITS — 50 Hz LEGEND CIRCUIT A ST A GE COMPRESSOR OR UNLO ADER PERCENT a1 u1 u2 a2 b1 u3 u4 b2 Lead 0 00000000 0 % 1 11100000 1 9 % 2 11000000 3 7 % 3 11101100 4 8[...]

159 APPENDIX C — UNIT ST A GING T ABLES (cont) STAGING SEQUENCE — SIZE 070 AND 075 UNITS LEGEND STAGING SEQUENCE — SIZE 090 UNITS LEGEND STAGING SEQUENCE — SIZE 105 UNITS LEGEND CIRCUIT A ST A GE COMPRESSOR OR UNLO ADER PERCENT a1 u1 u2 a2 b1 u3 u4 b2 Lead 0 00000000 0 % 1 11100000 1 4 % 2 11000000 2 9 % 3 10000000 4 3 % 4 11101100 5 1 % 5 [...]

160 APPENDIX D — VFD INFORMA TION On variable air volume un its with optional VFD, th e supply fan speed is controlled by a 3-phase VFD. The VFD is located in the supply fan section (030-0 50 units) or mixing bo x section (055-105 units) be hind an access door . The VFD speed is controlled directly by the Comfort Link™ controls through a 4 to 2[...]

161 APPENDIX D — VFD INFORMA TION (cont) Table B — VFD Configurations VFD Operation — The VFD keypad is shown in Fig. B. The function of SOFT KEYS 1 and 2 change depending on what is displayed on the screen. The function of SOFT KEY 1 matches the word in the lower left-hand box on the display screen. The function of SOFT KEY 2 matches the wor[...]

162 APPENDIX D — VFD INFORMA TION (cont) ST A R T U P WI TH A SS I ST A N T — Initial start-up has been performed at the factory . T o start up the VFD with the Start-Up Assistant or reset the VFD with the Carrier defaults, perform the following procedure: 1. Select MENU (SOFT KEY 2). The Main menu will be displayed. 2. Use the UP or DOWN keys [...]

163 APPENDIX D — VFD INFORMA TION (cont) ST AR T -UP ASSIST ANT MODE — T o use th e S ta rt -Up Assistant, perform the following procedure: 1. Select MENU (SOFT KEY 2). The Main menu will be displayed. 2. Use the UP or DOWN keys to highlight ASSIST ANTS on the display screen and press ENTER (SOFT KEY 2). 3. Use the UP or DOWN keys to highlight [...]

164 APPENDIX D — VFD INFORMA TION (cont) CL O CK SE T MO DE — The clock set mode is used for setting the date and time for the internal clock of the VFD. In order to use the timer functions of the VFD control, the internal clock must be set. The date is used to determine weekdays and is visible in the fault logs. T o set the clock, perform the [...]

165 APPENDIX D — VFD INFORMA TION (cont) Table C — Fault Codes FAU LT CODE F A UL T NAME IN P ANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION 1 O VERCURRENT Output current is excessiv e. Chec k for e xce ssive motor load, insufficient acceleration time (parameters 2202 A CCELE R TIME 1, de fault 30 sec- onds), or faulty motor , motor cables [...]

166 APPENDIX D — VFD INFORMA TION (cont) T o reset a fault indicated by a flashing red LED, turn off the power for 5 minutes. T o reset a fault indicated by a red LED (not flashing), press RESET from the control panel or turn off the power for 5 minutes. Dependi ng on the value of parameter 1604 (F AUL T RESET SELECT), dig ital input or serial co[...]

167 APPENDIX D — VFD INFORMA TION (cont) If diagnostics troubleshooting has determined that the drive is defective during th e warranty period, contact ABB Automation Inc., at 1-800-435-7365, option 4, option 3. A qualified technician will review the pro blem with the caller and make a determination regard ing how to proceed. This may involve dis[...]

168 APPENDIX D — VFD INFORMA TION (cont) 3. The housing that holds the fan in place has barbed retain- ing clips at each corner . Press all four clips toward the center to release the barbs. 4. When the clips/barbs are free, pull the housing u p to re- move from the drive. 5. Disconnect the fan cable. 6. Install the fan in reverse order , noting [...]

169 APPENDIX E — MODE SELECTION PROCESS The following section is to be used in conjunction with Fig. 4 on page 43. T o help determine why the unit controls are in a certain mode, the programming logic is provided below . The software will proceed, step by step, until a mode is reached. If an “If” statement is true, then that mode will be en- [...]

170 APPENDIX E — MODE SELECTION PROCESS (cont) HV AC mode: ("V ent ") — This is a normal operation mode where no heating or cooling is required and outside air is being delivered to the space to control IAQ levels. HV AC mode: ("Low Cool ") — This is a normal cooling mode when a low cooling demand exists. HV AC mode: (&quo[...]

171 INDEX Accessory control components 122 Accessory installation 7 Accessory Navigator™ display 4, 123 Actuators 38 Adjustments 128 Airflow control during Fire/smoke modes 73 Alarm output 39 Alarms and alerts 94 Alert limit confi guration 80 Auto view o f run status 90 Basic control usage 4-7 Building pressure configuration 70 Building pressure [...]

Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No . 04-53480039-01 Printed in U.S .A. Form 48/50Z-5T Pg 1 72 7-08 Replaces: 48/50Z-4T Copy right 2008 Carrier Cor poration[...]

Manufacturer reserves the right to disco ntinue, or change at any time, specifications or de signs without notice and without inc urring obligations. Catalog No . 04-53480039-01 Printed in U .S.A. Form 48/50Z-5T CL-1 7- 08 Replaces: 48/50Z-4T ITEM EXP ANSION RANGE DEF A UL T SETTING UNIT UNIT CONFIGURA TION → C.TYP Machine Control T ype 1 - 6 (mu[...]

CL-2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -[...]

CL-3 CONTROLS SET POINT AND CONFIGURATION LOG (cont) ITEM EXP ANSION RANGE DEF A UL T SET TING ECON ECONOMIZER CONFIGURA TION → EC.EN Economizer Installed? Y es/No Y es → EC2.E Econ.Act.2 Installed? Y es/No No → EC.MN Economizer Min.P osition 0 - 100% 5 → EC.MX Economizer Max.P osition 0 - 100% 98 → E.TRM Economzr T rim For SumZ ? Y es/No[...]

CL-4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -[...]

CL-5 CONTROLS SET POINT AND CONFIGURATION LOG (cont) ITEM EXP ANSION RANGE DEF A UL T SETTING IA Q (cont) → AQ . S P AIR QUALITY SETPOINTS → AQ . S P → IQ .O.P IA Q Econo Override P os. 0 - 10 0% 100 → AQ . S P → IQ .O.C IA Q Override Flow 0 - 31000 CFM 10000 → AQ . S P → DAQ . L Diff.Air Quality LoLimit 0 - 1000 100 → AQ . S P → [...]

CL-6 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -[...]

CL-7 UNIT ST ART -UP CHECKLIST MODEL NO.: _________________________________ SERIAL NO.: ______________________________________ SOFTW ARE VERSION _________________________ TECHNICIAN: ____________________________________ DA TE: _______________________________________ PRE-ST ART -UP:  VERIFY THA T DIP SWITCH SETTINGS ARE CORRECT  VERIFY THA T A[...]

Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No . 04-53480039-01 Printed in U. S.A. Form 48/50Z-5T CL-8 7-08 Replaces: 48/50Z-4T Copy right 2008 Carrier Cor poration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -[...]