American Water Heater HCG3 130T 300 manual

COMMERCIAL GAS W A TER HEA TERS Instruction Manual PRINTED 0810 317646-002 PLACE THESE INSTRUCTIONS ADJACENT TO HEA TER AND NOTIFY OWNER T O KEEP FOR FUTURE REFERENCE. Thank you for buying this energy efcient water heater . We appreciate your condence in our products. Read and understand this instruction manual and the safety messages herein [...]

2 Supply Gas Regulator Installation ................................................... 38 Electrical Wiring ............................................................................... 39 Power Supply Connections ...................................................................... 39 Enable/Disable Circuit ....................................[...]

3 SAFE INST ALLA TION, USE AND SERVICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all saf[...]

4 PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY P ART HAS BEEN UNDER W A TER. Immediately call a qualied service agency to inspect the appliance and to make a determination on what steps should be taken next. If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified service agency . 1.[...]

5 GENERAL SAFETY INFORMA TION Fire Hazard Do not install water heater on carpeted floo r. Do not operate water heater if flood damaged. For continued protection against risk of fire: Fire or Explosion Hazard Read instruction manual before installing, using or servicing water heater . Av oid all ignition sources if you smell gas. Do not store or use[...]

6 Thank Y ou for purchasing this water heater . Properly installed and maintained, it should give you years of trouble free service. ABBREVIA TIONS USED Abbreviations found in this Instruction Manual include : • ANSI - American National Standards Institute • ASME - American Society of Mechanical Engineers • GAMA - Gas Appliance Manufacturer ?[...]

7 BASIC OPERA TION The water heaters covered in this manual have a helical coil shaped heat exchanger that is submerged in the storage tank. The water heater’s Main Burner is a radial design burner , it is mounted on the top and res downward through the heat exchanger . This is a forced draft burner; hot burning gases are forced through the he[...]

8 Blower is operating properly . The control system monitors this switch and will disable heating operation if its contacts are closed before the Combustion Blower is energized or open any time during a heating cycle. See Sequence Of Operation on page 8. 1 1. V ent connection (exhaust elbow) - 4 inch PVC. 12. Combustion Blower . 13. Blocked Exhaust[...]

9 operational buttons. Used to adjust various user settings and view operational information. See Control System Operation on page 42. 1 1. T emperature-Pressure Relief V alve. See T emperature- Pressure Relief V alve on page 15. 12. T emperature-Pressure Relief V alve discharge pipe - see T&P V alve Discharge Pipe Requirements: on page 15. 13.[...]

10 T ABLE 2 Model U.S. Gallons Liters ASME Standard ASME Standard (A)HCG-130300 130 1 19.9 492 453.8 (A)HCG-130400 130 1 19.9 492 453.8 (A)HCG-130500 130 1 19.9 492 453.8 Figure 6 These designs comply with the current edition of the American National Standard for Gas W ater Heaters, V olume III, ANSI Z21.10.3 / CSA 4.3 as an automatic circulating t[...]

11 LOCA TING THE W A TER HEA TER Carefully choose a location for the new water heater . The placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. Property Damage Hazard All water heaters eventually leak. • Do not install without adequate drainage. • CAUTION [...]

12 EXTENDED VENT TERMINA TIONS The water heaters covered by this manual can be installed using 4 inch pipe for the intake air and/or vent piping up to a maximum of 70 equivalent feet (21.3 m). The intake air and/or vent piping can be extended up to 120 equivalent feet (36.5 m) by installing 6 inch pipe. See the V enting Requirements on page 22. The[...]

13 POWER SUPPL Y The water heaters covered in this manual require a 120 V AC, 1Ø (single phase), 60Hz, 15 amp power supply and must also be electrically grounded in accordance with local codes or , in the absence of local codes, with the National Electrical Code, ANSI/ NFP A 70 or the Canadian Electrical Code, CSA C22.1. POWER FLUCTUA TIONS AND EL[...]

14 HO T WA TER OUTLET TO TA NK INLET CHECK VA LV E MIXING VA LV E COLD WA TER INLET TEMPERED WA TER OUTLET 12” TO 15” (30-38 cm) CHECK VA LV E Figure 8 The National Sanitation Foundation also recommends circulation of 180°F (82°C) water . Where this is done, the circulation should be very gentle so that it does not cause any unnecessary turbu[...]

15 water in adequate quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water ow may cause property damage. Wa ter Damage Hazard Te mperature-Pressure Relief V alve discharge pipe must terminate at adequate drain. • CAUTION T&P V alve Discharge Pipe Requirements: • Shall[...]

16 CONDENSA TE DRAIN The water heaters covered in this manual are condensing appliances and require a building drain to be located in close proximity to allow the condensate to drain safely . Condensate drains from the water heater at the exhaust elbow located at the bottom. The eld installed condensate drain line must not be elevated above the [...]

17 UNUSUALL Y TIGHT CONSTRUCTION In unconned spaces in buildings, inltration may be adequate to provide air for combustion, ventilation and dilution of ue gases. However , in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier , etc.) additional air must be provided using the[...]

18 Alternatively a single permanent opening, commencing within 12 inches (300 mm) of the top of the enclosure, shall be provided. See Figure 1 1. The water heater shall have clearances of at least 1 inch (25 mm) from the sides and back and 6 inches (l50 mm) from the front of the appliance. The opening shall directly communicate with the outdoors or[...]

19 AIR FROM OTHER INDOOR SP ACES Figure 14 The conned space shall be provided with two permanent openings, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. See Figure 14. Each opening shall communicate directly with an additional room(s) of sufcient volume so that[...]

20 COMMONWEAL TH OF MASSACHUSETTS For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent t[...]

21 Requirements on page 17. If the installation space does not provide an adequate supply of fresh air the water heater must be installed in a Direct V ent conguration. 2. If the water heater is to be installed in a beauty shop, barber shop, cleaning establis hment, a laundry with dry cleaning equipment or any space with contaminated air it is i[...]

22 INT AKE AIR AND VENT PIPE CLEARANCES The minimum clearance from combustible materials for the vent (exhaust) and intake air piping shall be 0 inches. V ent or intake air piping passing through a combustible wall or ceiling must be a continuous run (no joints). MINIMUM EQUIV ALENT LENGTHS Four Inch Pipe The water heaters covered in this manual ar[...]

23 exhaust elbow on the water heater . 1 1. If installing 6 inch pipe transition to 4 inch pipe at the exhaust elbow as shown in Figure 15. The eld installed 4” pipe between the exhaust elbow and the 6” x 4” reducer coupling should be 18 inches (45 cm) or less in length. DIRECT VENT INST ALLA TION 1. Read the General V enting Instructions [...]

24 14. If installing 4 inch intake air pipe connect the intake air pipe to the intake air connection on the water heater . 15. If installing 6” intake air pipe transition to 4” pipe at the intake air connection on the water heater as shown in Figure 18. The eld installed 4” pipe between the intake air connection and the 6” x 4” reducer[...]

25 between the eld supplied 90° elbow and the factory supplied termination must not be excessive in length. The exposed portion of this pipe shall be no more than 2 inches (5 cm), see Figure 19. INT AKE AIR AND/OR VENT TERMINA TION(S) MUST BE A MINIMUM OF 24 INCES (60 cm) ABOVE AN Y PA RAPET , VE RT ICAL WA LL OR STRUCTURE WITHIN 10 FEET (3 m) [...]

26 SIDEW ALL TERMINA TION INST ALLA TION 1. Determine the location for the termination(s). 2. If installing only vent (exhaust) piping in a Power V ent conguration through a sidewall; ensure that all exterior sidewall clearance requirements for the termination, shown in Figure 48 on page 34, are being maintained. These clearances and those cited[...]

27 termination. Use only Schedule 40 PVC to extend the 6 inch concentric termination. When shortening the length of the termination carefully measure and cut the larger (intake air) pipe rst. Cut the same amount of pipe off of the smaller (vent) pipe. 10. Depending on which termination(s) is being installed go to 4 Inch Concentric T ermination I[...]

28 4 INCH CONCENTRIC TERMINA TION INST ALLA TION 4 INCH CONCENTRIC TERMINA TION KIT FOUR PIECE KI T - FIELD ASSEMBL Y REQUIRED VEN T PIPE INT AKE AIR CONNECTION 3 INCH PVC VEN T CONNECTION - 3 INCH PVC INT AKE AIR PIPE Y FITTING ASSEMBL Y VEN T CAP VEN T PIPE ASSEMBL Y VEN T PIPE IS 2 1/2 INCH SDR-26 PIPE SUPPLIED LENGTH 37 INCHES (94 cm) MAXIMUM A[...]

29 1 1. Push the vent cap/vent pipe assembly into the intake air Y tting assembly until the vent cap seats properly on the large diameter intake air pipe. Ensure the vent pipe is cemented to the no stop-lip reducer bushing previously installed in the Y tting. Secure the vent cap to intake air pipe with eld supplied stainless steel screws. [...]

30 Four Concentric T erminations 1. When installing four concentric terminations through a roof or through a sidewall in close proximity they may be arranged into stacked rows of two as shown in Figure 34 or lateral rows of two as shown in Figure 35. 2. Four is the maximum number of concentric terminations that may be installed in a group where all[...]

31 Four Concentric T erminations Four concentric terminations may be installed in close proximity as shown in Figure 38. See Figure 34 and Figure 35 on page 30 for detailed information on clearances and additional arrangement options. SIDEW ALL ROOF Figure 38 Eight Concentric T erminations Eight concentric terminations may be installed in two stack[...]

32 VENTING ARRANGEMENTS Power V ent V ertical Figure 40 Direct V ent V ertical Figure 42 Power V ent Horizontal Figure 41 Direct V ent Horizontal Figure 43[...]

33 VENTING ARRANGEMENTS Direct V ent V ertical V ent Horizontal Intake Figure 44 Direct V ent V ertical Concentric Figure 46 Direct V ent Horizontal V ent V ertical Intake Figure 45 Direct V ent Horizontal Concentric Figure 47[...]

34 TERMINA TION CLEARANCES SIDEW ALL POWER VENT V X VEN T TERMINAL AIR SUPPL Y INLE TA RE A WHERE TERMINAL IS NO T PERMITTED v v A G V FIXED CLOSED FIXED CLOSED OPERABLE OPERABLE V C B B B B F B V V A J V H M X X V V K B E D L POWER VENT (using room air for combustion) EXTERIOR CLEARANCES FOR SIDEW ALL VENT TERMINA TION Figure 48 V ent terminal cle[...]

35 TERMINA TION CLEARANCES SIDEW ALL DIRECT VENT V X VENT TERMINAL AIR SUPPL Y INLE TA RE A WHERE TERMINAL IS NO T PERMITTED v v A G V FIXED CLOSED FIXED CLOSED OPERABLE OPERABLE V C B B B B F B V V A J V H M X X V V K B E D L DIRECT VENT (using outdoor air for combustion) EXTERIOR CLEARANCES FOR SIDEW ALL VENT TERMINA TION Figure 49 V ent terminal[...]

36 2. The eld installed condensate drain line must not be less than 1/2 inch PVC in size. 3. DO NOT remove, modify or alter the factory condensate trap. INST ALLA TION INSTRUCTIONS 1. Ensure the water heater’s on/off switch is in the “off” position. 2. Install a 1/2 inch PVC condensate drain line between the condensate drain connection on [...]

37 SUPPL Y GAS LINE INST ALLA TION Contact your local gas utility company to ensure that adequate gas service is available and to review applicable installation codes for your area. Be sure that the gas meter has sufcient capacity to supply the rated gas input of the water heater as well as the requirements of all other gas red equipment supp[...]

38 GAS LINE CONNECTION 1. v The water heaters covered by this manual are shipped from the factory with a 1 1/4” supply gas connection, see T able 1 on page 10. Short pipe nipples and reducer couplings are factory installed to increase the size of the water heater ’s 24 V AC Gas V alve inlet, see Figure 53. 2. Connect the supply gas line to the [...]

39 (IE: relay coil) to this circuit. This will damage the CCB circuit board and is not covered under the limited warranty . Connecting An External Supervisory Control The enable/disable circuit is accessed from the CCB’s J6 plug inside the CCB enclosure, see Figure 3 on page 8 to locate the CCB enclosure. From the factory there is a short (black)[...]

40 T&P V AL VE DISCHARGE PIPE Explosion Hazard Te mperature-Pressure Relief Va lv e must comply with ANSI Z21.22- CS A 4.4 and ASME code. Properly sized temperature- pressure relief valve must be installed in opening provided. Can result in overheating and excessive tank pressure. Can cause serious injury or death. This water heater is provided[...]

41 Setting the Operating Set Point at 120°F (49°C) will reduce the risk of scalds. Some States require settings at specic lower temperatures. T ABLE 10 W ater T emperature T ime to Produce 2nd & 3rd Degree Burns on Adult Skin 180°F (82°C) Nearly instantaneous 170°F (77°C) Nearly instantaneous 160°F (71°C) About 1/2 second 150°F (66?[...]

42 multifunctional, their current function is dened by the text that appears directly above each button on the LCD screen. THE DESKTOP SCREEN During normal operation the control system will display the "Desktop" screen on the LCD which is the default screen. The control system will return to the Desktop screen when there are no active [...]

43 ST A TUS ICONS The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information. The icons are described in the table below . See Figure 55 on page 42 and the Sequence Of Operation on page 43. T ABLE 1 1 Icon Description W ater temperature in the tank has fallen. Shaded area of the animated thermometer icon [...]

44 OPERA TING ST A TES The current operational state of the water heater is displayed on the Desktop screen as the "Status." The common operational states are described in the table below . See Figure 55 on page 42 and the Sequence Of Operation on page 44. T ABLE 12 State Description Standby The water heater is not in an active heating cy[...]

45 USER SETTINGS & CONTROL SYSTEM MENUS TEMPERA TURES MENU Operating Set Point And Differential Adjustment The Operating Set Point is adjustable from 90°F (42°C) to 180°F (82°C). The factory setting is 120°F (49°C). The Differential is adjustable from 2° to 20°. The factory setting is 8°. These user settings are accessed from the T emp[...]

46 TEMPERA TURES MENU (CONT) DESCRIPTION/ACTION DISPLA Y • T ank T emperature - non adjustable - control system sensed temperature (averaged from upper and lower temperature probes). • Upper T emperature - non adjustable - control system sensed temperature from the Upper T emperature Probe. • Lower T emperature - non adjustable - control syst[...]

47 DISPLA Y SETTINGS DESCRIPTION/ACTION DISPLA Y Select Display Settings from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains adjustable display options for viewing information on the UIM’ s LCD screen. Use the Up & Down Buttons to navigate the menu. • T emperature Units - Adjus[...]

48 CURRENT F AUL T DESCRIPTION/ACTION DISPLA Y Select Current Fault from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains non adjustable operational information. Use the Up & Down Buttons to navigate the menu. This menu contains the current Fault or Alert error message. The time the [...]

49 SERVICE CONT ACT INFORMA TION The control system has a discrete menu that Installing contractors and/or service agents can access to enter contact information for their customers. This contact information will be displayed with all Fault and Alert messages. DESCRIPTION/ACTION DISPLA Y From the Desktop Screen (see Figure 55 on page 42) press and [...]

50 PRIOR TO ST ART UP Installation and start up of this water heater requires abilities and skills equivalent to that of a licensed tradesman in the eld involved, see Qualications on page 6. Do not place the water heater in operation if any part has been under water . Immediately call a qualied service technician to inspect the water heate[...]

51 to a common gas main ring at full capacity . NOTE: A pressure drop of more than 1.5” W . C. (0.37 kPa) when the Main Burner ignites is an indication of an inadequate supply of gas and can lead to ignition failure, rough starts and/or rough operation. If a drop of more than 1.5” W . C. (0.37 kPa) in supply gas pressure occurs when the Main[...]

52 CHECKING THE FIRING RA TE If ring rate adjustment is required follow these instructions to determine the actual ring rate of the water heater: 1. Ensure there are no other gas red appliances connected to the gas meter ring during this test. 2. Contact the gas supplier to determine the heating value, in Btu per cubic foot, of the gas [...]

53 LIGHTING THE W A TER HEA TER ON OFF Honeywell IN 1/2 PSI GAS CONTROL KNOB FOR YOUR SAFETY READ BEFORE OPER AT ING TO TURN OFF GAS TO APPLIANCE OPERA TING INSTRUCTIONS W ait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow “B” in the safety information above on this label. If you don’t smell gas, go on to the next [...]

54 SEQUENCE OF OPERA TION Read the Sequence of Operation below before attempting to correct any operational problems. Refer to the Features And Components section beginning on page 7 for the location of various water heater components described below . See the Sequence Of Operation Flow Chart on page 55 also. 13. When the control system is first po[...]

55 SEQUENCE OF OPERA TION FLOW CHART YES NO Wa te r is heat ed to se t po in t 24 V olt Ga s Va lv e de -e nerg iz ed 30 seco nd In te r- Pu rge c ycl e 24 Volt Ga s Va lv e de- energi ze d Re tr ie s up to tw o mo re ti me s 30 se co nd Po st -P urge cycl e Co nt ro l Sy st em Loc ks Ou t “I gn it io n Fa ilu re” Fa ul t Ms g is di sp la ye d [...]

56 • Excessive manifold gas pressure - see T able 4 on page 13 and Manifold Gas Pressure Adjustment on page 51. • V ent (exhaust) gas recirculation at the vent and intake air pipe terminations on Direct V ent installations - see Direct V ent Installation on page 23. • Excessive equivalent lengths of intake air and/or vent (exhaust) piping ins[...]

57 ALERT CONDITIONS When the control system declares an Alert condition it will display an Alert message on the control system's LCD with a question "?" mark. The water heater will continue to operate during an Alert condition but the water heater must be serviced by a qualied service agent as soon as possible. RESETTING CONTROL S[...]

58 F AUL T AND ALERT MESSAGES Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualied service agent in your area. POSSIBLE CAUSES - CHECK/REP AIR DISPLA YED F AUL T/ALERT MESSAGE • The water heater ’s control system is polarity sensitive and will lock out and disable heating op[...]

59 F AUL T AND ALERT MESSAGES (CONT) Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualied service agent in your area. POSSIBLE CAUSES - CHECK/REP AIR DISPLA YED F AUL T/ALERT MESSAGE • The control system has detected the Blower Prover Switch contacts are closed when they shoul[...]

60 MAINTENANCE SCHEDULE T ABLE 14 COMPONENT OPERA TION INTERV AL REQUIRED T ank Sediment Removal Semi Annually Flushing T ank Lime Scale Removal Semi Annually UN-LIME® Anode Rods Inspection Cleaning Annually Clean Scale Deposits T&P V alve T est Operation Semi Annually T est V ent System Inspection Annually T ermination Screens Clean Reseal/Re[...]

61 TA NK CLEANOUT OPENING CLEANOUT COVER CLEANOUT GASKET CLEANOUT ACCESS P ANEL Figure 58 MANUAL LIME SCALE REMOV AL NOTE: Contact your local distributor or call the parts department phone number on the back cover of this manual to order a new cleanout gasket. Have the new gasket available before removing the cleanout cover . The cleanout opening i[...]

62 DISCHARGE PIPE TEMPERA TURE-PRESSURE RELIEF VA LV E Figure 59 If the T emp erature - Pres sure Relief V alve on the water h eater weeps or disc harg es peri odic ally , this may be due to t herm al expansion. NOT E: Exce ssive water pressu re i s t he m ost comm on cause of T e mperatu re -Pr essure Relief V alve leakag e. Exc essive water syste[...]

63 DIAGRAMS CCB - CENTRAL CONTROL BOARD LA YOUT 1 Re tr y Us e Ye s Type Ts ta t Sp ar e Ex t I nput 3 Re tr ie s No Vent Spar e OP EN 1 2 3 4 3 2 1 6 5 4 9 8 7 12 11 10 15 14 13 J6 J7 3 2 4 1 1 2 J1 5 8 4 5 6 7 1 2 3 J1 3 3 4 1 2 J1 0 1 3 5 2 4 J1 1 3 4 2 J2 1 4 2 1 2 J3 J5 J4 S1 DI PSWITCH J1 6 J9 J1 1 S1 DIPSWITCH DET AIL CCB (CENTRAL CONTROL BO[...]

64 (A)HCG3 130T 300 WIRING DIAGRAM 2 GREEN WHITE RED BLACK 1 1 2 BLACK 3 WHITE COMBUSTION BLOWER U PPER TEMPERATURE PROB E 1 RED (ECO) 4 RED (ECO) 2 BLACK 3 BLACK 1 BLACK120 VAC HOT 3 WHITE 120 VAC NEUTRAL 4 YEL 24 VAC 4 YEL 24 VAC LOWER TEMPERATURE PROBE HOT SURFACE IGNITER FLAME SENSOR BLOCKED AIR INTAKE BLOCKED EXHAUST BLOWER PROVER 24 VAC GAS V[...]

65 (A)HCG3 130T 400 WIRING DIAGRAM 1 2 5 6 WHITE GREEN BLACK BLACK WHITE RED COMBUSTION BLOWER NOTE: COMBUSTION BLOWER MOTORS ON 400,000 Btu/hr MODELS ARE THREE PHASE (3Ø) MOTORS. BLACK, WHITE AND RED WIRES MUST BE WIRED AS SHOWN OR THE MOTOR WILL TURN BACKWARDS. THIS MAY CAUSE THE CONTROL SYSTEM TO LOCK OUT ON “BLOWER PROVER OPEN” FAULT. WHIT[...]

66 CIRCULA TION PUMP WIRING DIAGRAMS Figure 63 Figure 64 CIRCULA TING PUM P WIRING DIAGRAM STORAGE TA NK OR BUILDING RECIRCULA TION FIELD SUPPLIED TEMPERA TURE CONTROL INST ALLED IN THE ST ORAGE TA NK OR CIRCULA TING LOOP RETURN LINE CIRC PUMP MOTOR L1 HOT L2 NEUTRAL 120 VA C POWER NOTE: USE SEP ARA TE 120 V AC POWER SUPPL Y FOR PUMP CIRCUI T. DO N[...]

67 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

68 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

69 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

70 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

71 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

72 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

73 4. See Closed Systems and Thermal Expansion on page 14 5. See W ater Line Connections on page 40. 6. If a pump is being installed between a water heater and storage tank or on a building recirculation loop wire according to Figure 63 on page 66. 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dis[...]

74 American W ater Heater Company , the warrantor , extends the following LIMITED WARRANTY to the owner of this water heater . 1. THE T ANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the rst THREE years after initial install[...]

75[...]

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