Goodman Mfg VC8 manual

C US ® A TTENTION INST ALLING PERSONNEL RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. Installer: Affix all manuals adjacent to the unit. These furnaces comply with requirements em- bodied in the American National S tandard / Na- tional S tandard of Canada ANSI Z21.47·CSA- 2.3 Gas Fired Central Furnaces. As a professional installer , you have an o[...]

2 T able of Content s S AFETY P RECAUTIONS ................................................................................................................................. 4 A DDITIONAL S AFETY C ONSIDERA TIONS ...................................................................................................... 5 S HIPPING I NSPECTION ...........[...]

3 T able of Content s C IRCULATION A IR F IL TERS ................................................................................................................... 23 H ORIZONT AL I NST ALLA TIONS ................................................................................................................ 23 S T ART - UP P ROCEDURE A ND A DJUS[...]

4 S AFETY P RECAUTIONS Adhere to the following warnings and cautions when install- ing, adjusting, altering, servicing, or operating the furnace. T o ensure proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and application of this product. T O  PREVEN T  PER SONAL  INJURY  OR [...]

5 P RODUCT A PPLICA TION T O  PREVEN T  PER SONAL  INJURY  OR  DEATH  DUE  TO  ASPHYXIATIO N ,  THI S  FUR NAC E  MUST  BE  C ATEGORY  I  VE NTE D .  D O  NOT  VE NT  USI NG  C ATEGORY  II I  VE NTI NG . P RO VIS IO N S  MUST  BE  MADE  FOR  VE NTI NG  CO MB UST IO [...]

6 L OCA TION R EQUIREMENTS AND C ONSIDERA TIONS • It must be installed per the installation instructions provided and per local and national codes. • It must be installed indoors in a building constructed on site. • It must be part of a ducted system and not used in a free air delivery application. • It must not be used as a “make-up” a[...]

7 L OCA TION R EQUIREMENTS AND C ONSIDERA TIONS T o ensure proper furnace operation, inst all, operate and maintain the furnace in accordance with these installa- tion and operation instructions, all local building codes and ordinances. In their absence, follow the latest edition of the National Fuel Gas Code (NFP A 54/ANSI Z223.1), and/or CAN/CSA [...]

8 L OCA TION R EQUIREMENTS AND C ONSIDERA TIONS To p - 1 " Sid e Cleara nce - 1" Back - 0 " Front Cl earance - 3" V ent P ipe Cle arance to Com bustib l e s - 6" usin g Si ngle W all Co nne ctor or 1 " usi ng B -1 ve nt. • Adequate combustion/ventilation air must be supplied to the closet. • Furnace must be complet[...]

9 C OMBUSTION & V ENTILA TION C A TEGORY I V ENTING A IR R EQUIREMENTS Suspended Furnace E XISTING F URNACE R EMOVAL NOTE: When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances. The following vent testing procedure is reproduced [...]

10 E XTERIOR MASONRY C HIMNEYS - C A TEGORY I F URNACES O NL Y heating/cooling costs but have created a problem supplying combustion and ventilation air for gas fired and other fuel burn- ing appliances. Appliances that pull air out of the house (clothes dryers, exhaust fans, fireplaces, etc.) increase the problem by starving appliances for air . H[...]

11 E XTERIOR MASONRY C HIMNEYS - C A TEGORY I F URNACES O NL Y 1 1. Reconnect the induced draft blower power leads. NOTE: If the wires are not long enough, pull extra wire from the wire bundle in the blower compartment. 12. Reconnect the flue pipe, and the pressure switch tubing. Ensure that all wires and the pressure switch tubing is at least one [...]

12 E XTERIOR MASONRY C HIMNEYS - C A TEGORY I F URNACES O NL Y If the chimney does not meet these termination requirements, but all other requirements in the checklist can be met, it may be possible for a mason to extend the chimney . If this will not be practical, see Fix 1. W a ll or Par a pe t 2' M i n. 2' Min. 3' M i n. Chi mn ey[...]

13 E XTERIOR MASONRY C HIMNEYS - C A TEGORY I F URNACES O NL Y Next, use a flashlight and small mirror to sight up the liner . B vent must be supported so as to not come into direct contact with the chimney walls or tile liner . If it is not, it can probably be rehung so as to be acceptable. A thimble or fire stop may be helpful here. Flexible line[...]

14 E LECTRICAL C ONNECTIONS F IX 3 - R EBUILD THE C ROWN If the chimney crown is damaged, a qualified mason must re- pair it in accordance with nationally recognized building codes or standards. One such standard which may be referenced is the S tandard for Chimneys, Fireplaces, V ents, and Solid Fuel Burning Appliances, ANSI/NFP A 21 1. F IX 4 - R[...]

15 E LECTRICAL C ONNECTIONS and in the National S tandard of Canada, CAN/CSA B149.1 and CAN/CSA B149.2 - latest editions and amendments. T o inst all the liner , read and follow the liner manufacturer ’s in- structions and your local codes. Excess liner length should be pulled out of the chimney and cut off. Use caution when doing this, as the cu[...]

16 E LECTRICAL C ONNECTIONS J UNCTION B OX R ELOCATION E DGES  OF  SHEET  METAL  HOLES  MAY  BE  SHARP .  U SE  GLOVES  AS  A  PRE CAUTION  WHEN  RE MO VI NG  HOLE  PLUG S . W ARNING Line voltage connections can be made through either the right or left side panel. The furnace is shipped configured for[...]

17 E LECTRICAL C ONNECTIONS R Y C NEU Furnace Int egr at ed Control M odul e Remot e Condensing U ni t (Single-Stage Cooling) Dehumidistat [Optional] T o apply a sin g le- stage He ating T h ermost at, the thermostat s elect or switch on the Inte grated C ontrol Module be set o n single -stage. must NOTE: Si ng le S ta g e He at ing wi th Si ngl e [...]

18 G AS S UPPL Y AND P IPING A heat pump thermostat with three stages of heat is required to properly use a two-stage furnace in conjunction with a heat pump. Refer to the fossil fuel kit installation instructions for additional thermostat requirements. S trictly follow the wiring guidelines in the fossil fuel kit installa- tion instructions. All f[...]

19 C IRCULA TING A IR AND F IL TERS air temperature rise must be within the range listed on the fur- nace nameplate. Should this appliance be converted to LP , refer to the instructions included in the factory authorized LP conversion kit. H IGH A LTITUDE D ERATE IMPORT ANT NOTE: The furnace will naturally derate itself with altitude. Do not attemp[...]

20 G AS S UPPL Y AND P IPING • Install a manual shutoff valve between the gas meter and unit within six feet of the unit. If a union is installed, the union must be downstream of the manual shutoff valve, between the shutoff valve and the furnace. • Tighten all joint s securely . • Connect the furnace to the building piping by one of the foll[...]

21 C IRCULA TING A IR AND F IL TERS P ROPANE G AS T ANKS AND P IPING I F  THE  GAS  FUR NAC E  IS  INSTALLED  IN  A  BASEM ENT ,  AN  EX C AVATED  AREA  OR  CO NFI NE D  SPAC E ,  IT  IS  ST RO NGL Y  RECOM MENDE D  TO  CO NTA CT  A  PROP ANE  SUPPL IER  TO  INS TALL  A ?[...]

22 S TA R T - UP P ROCEDURE AND A DJUSTMENT A closed return duct system must be used, with the return duct connected to the furnace. NOTE: Ductwork must never be attached to the back of the furnace. For installations requiring more than 1800 CFM, use a bottom return or two sided return. Supply and return connections to the furnace may be made with [...]

23 S TA R T - UP P ROCEDURE AND A DJUSTMENT ply with UL900 or CAN/ULCS1 1 1 standards. If the furnace is installed without filters, the warranty will be voided. NOTE: An undersized opening will cause reduced airflow . The bottom return is set up as a knock out. U PRIGHT I NSTALLATIONS Depending on the installation and/or customer preference, dif- f[...]

24 S TA R T - UP P ROCEDURE AND A DJUSTMENT IN L ET OUTLET Gas V a lve On /Off Selector Swi tc h White-Rodgers Model 36G54 (Two-Stage) In let Pressure Boss Low Fire Regu lator Adj us t M a n o m e t e r M a n o m e t e r H o s e High Fire Regulator Adj ust Regulator V ent Out let Pressure Boss Open to Atmosphere O n / O f f S w i t c h H i g h F i [...]

25 S TA R T - UP P ROCEDURE AND A DJUSTMENT Gas Line Gas Shutoff Val ve Gas Line To Furnace Drip Leg Cap With F itting Manometer Ho se Manometer Open To Atmosphe re Measuring Inlet Gas Pressure (Alt. Method) G AS M ANIFOLD P RESSURE M EASUREMENT AND A DJUSTMENT T O  PREVEN T  UNR ELIABL E  OP ERAT IO N  OR  EQU IPMEN T  DAMAGE , ?[...]

26 S TA R T - UP P ROCEDURE AND A DJUSTMENT 4. Calculate the furnace input in BTUs per hour (BTU/hr). Input equals the sum of the installation’s gas heating value and a conversion factor (hours to seconds) divided by the number of seconds per cubic foot. The measured input must not be greater than the input indicated on the unit rating plate. EXA[...]

27 S TA R T - UP P ROCEDURE AND A DJUSTMENT The cooling system manufacturer’s instructions must be checked for required air flow . Any electronic air cleaners or other devices may require specific air flows, consult installa- tion instructions of those devices for requirements. 3. Knowing the furnace model, locate the high stage cooling air flow [...]

28 S TA R T - UP P ROCEDURE AND A DJUSTMENT 7. Select the heating speed for your model from the heating speed chart in the S pecification Sheet. The adjust setting (already established by the cooling speed selection) determines which set of speeds are available. The selected speed must provide a temperature rise within the rise range listed with th[...]

29 COMFORTNET™ SYSTEM ECM motor . If the outdoor unit or thermost at is responsible for determining the demand, it calculates the demand and transmits the demand along with a fan request to the indoor unit. The indoor unit then sends the demand to the ECM motor . The t able below lists the various ComfortNet sys- tems, the operating mode, and air[...]

30 COMFORTNET™ SYSTEM Four wires are required between the indoor unit and thermo- stat. NOTE: Use of the CTK01AA transformer is recommended if installing a dual fuel/fossil fuel system. Failure to use the transformer in the outdoor unit could result in over loading of the furnace transformer . 12 R C 12 RC CTK01AA Thermostat CT C om patible Furna[...]

31 COMFORTNET™ SYSTEM A CCESSING AND N AVIGATING THE A DVANCED F EATURES M ENUS The advanced system features are accessed using the ComfortNet thermostat. These advanced features are accessed as follows: • On the CT thermostat Home Screen Display , touch the Menu key to display additional key choices. • T ouch and hold the Installer Config ke[...]

32 COMFORTNET™ SYSTEM F URNACE A DVANCED F EATURES M ENUS S ubm enu I t em I ndi ca t i on ( f o r Di splay On l y ; not Us er Mod i fi able) N um ber of Heat S tages (HT S T G ) Disp l ay s t he num ber of fur nace heating stag es I nput Rat e (BT U/H R ) Disp l ay s t he fur n ac e i nput rat e i n kB t u / h r M ot or HP ( 1 / 2, ¾ , or 1 M T[...]

33 COMFORTNET™ SYSTEM N ETWORK TROUBLESHOOTING Communications is achieved by taking the difference between two dc signals. The signals and transmission lines are referred to as “data 1” and “data 2”. Each transmission line is biased to approximately 2.5Vdc. During data recep- tion/transmission, the data lines vary between +5V and ground. [...]

34 O PERA TIONAL C HECKS & S AFETY C IRCUIT D ESCRIPTION H EATING M ODE The normal operational sequence in heating mode is as fol- lows: • R and W1 (or R and W1/W2) thermostat contacts close, initiating a call for heat. • Integrated control module performs safety circuit checks. • Induced draft blower is energized on high speed for a 15- [...]

35 O PERA TIONAL C HECKS & S AFETY C IRCUIT D ESCRIPTION • Gas valve opens at end of igniter warm up period, delivering gas to burners and establishing flame. • Integrated control module monitors flame presence. Gas valve will remain open only if flame is detected. • If the thermostat call is for low heat, gas valve and induced draft blow[...]

36 T ROUBLESHOOTING & M AINTENANCE Burner Flame S AFETY C IRCUIT D ESCRIPTION A number of safety circuits are employed to ensure safe and proper furnace operation. These circuits serve to control any potential safety hazards and serve as inputs in the monitoring and diagnosis of abnormal function. These circuits are con- tinuously monitored dur[...]

37 M ISCELLANEOUS F AULT R ECALL The ignition control is equipped with a momentary push-button switch that can be used to display the last six faults on the dual 7-segment LED’s. The control must be in S tandby Mode (no thermostat inputs) to use the feature. Depress the switch for approximately 2 seconds. Release the switch when the LED’s are t[...]

38 M ISCELLANEOUS B URNERS Visually inspect the burner flames periodically during the heat- ing season. Turn on the furnace at the thermostat and allow several minutes for flames to stabilize, since any dislodged dust will alter the flames normal appearance. Flames should be stable, quiet, soft, and blue (dust may cause orange tips but they must no[...]

39 T ROUBLESHOOTING C HART ComfortNet™ Thermostat Only Symptoms of Abnor mal Operation (Legacy & ComfortNet™ Thermostat ) Diagnostic/St atus LED Codes Fault Description Message Code Possible Cau ses Corrective Actions Notes & Cautions x Furnace fails to operate x Integrated c ontrol module LED display provides n o signal. x ComfortNet?[...]

40 T ROUBLESHOOTING C HART ComfortNet™ Thermostat Only Symptoms of Abnor mal Operation (Legacy & Com fortNet™ Thermostat) Diagnostic/St atus LED Codes Fault Description Message Code Possible Cau ses Corrective Actions Notes & Cautions x Circulator blower runs continuously. No furnace operation. x Integrated c ontrol module LED display p[...]

41 T ROUBLESHOOTING C HART ComfortNet™ Thermostat Only Symptoms of Abnor mal Operation (Legacy & Com fortNet™ Thermostat) Diagnost ic/Status LED Codes Fault Description Message Code Possible Cau ses Corrective Actions Notes & Cautions x Furnace fails to opera te on high stage; furnace operates nor mally on low stage. x Integrated c ontr[...]

42 T ROUBLESHOOTING C HART ComfortNet™ Thermostat Only Symptoms of Abnor mal Operation (Legacy & Com fortNet™ Thermostat) Diagnostic /Status LED Codes Fault Description Message Code Possible Cau ses Corrective Actions Notes & Cautions x Operation different than expected or no operation. x Integrated c ontrol module LED display provides [...]

43 T ROUBLESHOOTING C HART ComfortNet™ Thermostat Only Symptoms of Abnor mal Operation (Legacy & Com fortNet™ Thermostat) Diagnostic /Status LED Codes Fault Description Message Code Possible Cau ses Corrective Actions Notes & Cautions x Furnace fails to operate. x Integrated c ontrol module LED display provides b 4 error code. x Comfort[...]

44 S T A TUS C ODES C 2 O P H I b 0 d 4 C 1 b 2 E 4 H I INTERNA L C ONTROL F AUL T /NO POW ER NORMAL O P ERAT IO N LOCKOUT DUE TO EXCESSIVE RE TRIES LOW S T A GE P RES SUR E SWIT CH STUCK C LOSE D A T STA RT O F HEA T IN G CYCLE LOW S T A GE P R ESSURE S WI TCH STUCK O P E N OPEN HIGH LIMIT SWI TCH FLAME DETECTED WHEN N O FLAM E SHOULD BE PRESE NT [...]

45 A IR F LOW D ATA *DV C8 11 55CX * *DV C8 09 05 CX * *DVC 8 07 03BX* *MVC 811 55C X* *MV C809 0 5CX * *MVC 8070 4BX * T o s e t airflow : C ----- - - 7. 5 mi n/82% 6 0 sec/100% A ---- - -- -------- 6 0 sec/100% TAP 1 2 3 4 5 6 7 8 To set Comfor t Mode: B ON OFF O N OFF ON OF F O N OFF C OFF ON OFF ON OF F ON OF F ON B -- ----- 30 sec /50% 60 s e [...]

46 Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. H I G H V O LTA G E ! D ISCONNE CT ALL PO WER BEFO RE SER VICIN G OR INSTALLING THIS UNIT . M ULTIPLE PO WER SOURCE S MA Y BE PRE SENT . F AILU RE TO DO SO MA Y CAUSE PROP ERT Y DAMAG E , PERSO NAL INJURY OR DEATH . T O + V D C T O M I C R[...]

47 *MVC8_AB, *DVC8_AA W IRING D IAGRAM TO + VDC TO MI CRO TO R GN D (4 ) + VDC (1) RX ( 2) TX (3) CIRCU L A TO R I NDOOR AIR BLWR RD GY BL BK PROPER L Y P OLARIZED HUMI DIFI ER GND PRO T ECTION D EV I CE HEA T O FF DELA Y BURN ER COM PAR TMENT 24 V 3 A BL POWE R SUPPL Y WITH LINE 12 TO C 2 BK RD UNUSE D DIS CONNECT P OWER 4 IGNITE R FLAM E SENSO R [...]

48 Goodman Manufacturing Company , L.P . 5151 San Felipe, Suite 500, Houston, TX 77056 www .goodmanmfg.com © 2009-2010 Goodman Manufacturing Company , L.P .[...]