American Water Heater GAS-FIRED COMMERCIAL WATER HEATER Service Manual

INSTALLATION, OPERATION, AND SERVICE MANUAL HIGH EFFICIENCY GAS WATER HEATER THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED SERVICE PERSONNE

10 EXHAUST AND INLET AIR PIPING (CONT.)VENT PIPE LENGTH Size the exhaust outlet and combustion air intake pipes as specified in Table 1. This table l

11 EXHAUST AND INLET AIR PIPING (CONT.)CONCENTRIC VENT TERMINATION Refer to Figures 6, 7, and 8 and install the vent terminal according to the follow

12 EXHAUST AND INLET AIR PIPING (CONT.)HORIZONTAL DIRECT VENT TERMINAL INSTALLATIONS STD. HORIZONTAL TERMINATION When 3 in. pipe is used between the

13 EXHAUST AND INLET AIR PIPING (CONT.)VERTICAL TERMINATION When 3 in. pipe is used between the water heater and the roof, reduce it to 2 in. pipe be

13 GAS INPUT RATE: The gas input rate of this water heater is affected by several environmental factors such as: • The heating value of the gas • T

14 WATER SYSTEM PIPING GENERAL INFORMATION Water piping, fittings, and valves must be properly installed for the correct and safe operation of this w

15 WATER SYSTEM PIPING (CONT.) PIPING INSTALLATION Piping, fittings, and valves should be installed according to the installation drawing (Figure 13)

16 WATER SYSTEM PIPING (CONT.) 6. Install a temperature and pressure relief valve and discharge line in the opening marked “T & P RELIEF VALVE”

17 GAS SUPPLY AND PIPING GENERAL INFORMATION DANGER THIS WATER HEATER IS EQUIPPED FOR ONE TYPE OF GAS ONLY. DO NOT USE THIS WATER HEATER WITH ANY GA

18 GAS SUPPLY AND PIPING (CONT.) When installing gas piping, use a pipe joint compound that is resistant to the action of propane (LPG) gases. Apply

2 Vapors from flammable liquids will explode and catch fire causing death or severe burns. Do not use or store flammable products such as gasoline,

19 ELECTRICAL CONNECTIONS DANGER THIS WATER HEATER MUST HAVE AN UNINTERRUPTED GROUND ACCORDING TO THE LATEST EDITION OF THE NATIONAL ELECTRICAL CODE,

20 INSTALLATION CHECK LIST WATER HEATER LOCATION ◊ Centrally located with the water piping system. Located as close to the gas piping and vent pipe

21 START-UP/OPERATIONWARNING IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PER-SONAL INJUR

FIGURE 17 POLARIS LIGHTING INSTRUCTION 22 FOR YOUR SAFETY READ BEFORE OPERATING WARNING If you do not follow these directions exactly, a fire or

24 OPERATIONAL CONDITIONS WATER HEATER SOUNDS During the normal operation of the water heater, sounds or noises may be heard. These noises are commo

25 MAINTENANCE (cont.) WARNING OBSTRUCTIONS OR HOLES IN THE VENT PIPE CAN CAUSE TOXIC FUMES TO ENTER THE STRUCTURE RESULTING IN CARBON MONOXIDE POISO

26 REMOVAL AND REPLACEMENT OF THE GAS REGULATOR VALVE REMOVING THE GAS REGULATOR VALVE WARNING REMOVAL AND REPLACEMENT OF THE GAS REGULATOR VALVE IN

INDUCED DRAFTMOTOR STARTSBLOWER PREPURGE8 SECONDSSET THERMOSTAT TO CALL FOR HEATGREEN LED ONYELLOW LED ONCHECK THE FOLLOWING: WIRE CONNECTIONS. LI

IS PRESSURE SWITCHOPENTURN ON BLOWERCONTROL POWERUPTURN OFF BLOWER, AND TURNON IGNITER FOR 35 SECONDWARM-UPIS PRESSURE SWITCH OPENIGNORE PRESSURE SWIT

REPAIR PARTS REPAIR PARTS LIST ITEM NO. PARTS DESCRIPTION 1 TRANSFORMER 2A THERMOSTAT SENSOR/ECO 2B THERMOSTAT BOARD 2C THERMOSTAT POTENTIOMETER 2D O

3GENERAL SAFETY WARNINGSBEFORE ATTEMPTING TO INSTALL OR OPERATE THIS WATER HEATER, MAKE SURE YOU READ AND UNDERSTAND THE ENTIRE INSTALLATION, OPERATI

REPAIR PARTS DIAGRAM30

24 VHOTONLYNEUTRAL (WHITE)REDORANGEL.E.D.(WIRES IN BOLD)WHITE120 VACL1 (BLACK)GREENDIALTHERMOSTAT24 V120 VREDBROWNWHITETRANSFORMERIGNITERBROWNWHITEBLA

4GENERAL SAFETY WARNINGS DANGER • TURN OFF THE ELECTRIC POWER AT THE FUSE BOX OR SERVICE PANEL BEFORE MAKING ANY ELECTRICAL CONNECTIONS. FAILURE TO

5

5 CONSUMER INFORMATION This water heater is design-certified by CSA International as a Category I direct vented water heater which takes

6 LOCATION REQUIREMENTS AND CONSIDERATIONSGENERAL INFORMATION WARNING DO NOT INSTALL THIS WATER HEATER IN A MANUFACTURED HOME (MOBILE HOME). This wat

7 LOCATION REQUIREMENTS AND CONSIDERATIONS (CONT.) 5. The water heater should be located in an area not subject to freezing temperatures. Water h

SEE PAGE 30 FOR ALTERNATE AIR INLET DRAIN TEE ASSEMBLY. 8 CONDENSATE TRAP ASSEMBLY AND DRAIN LINE CAUTION RUN THE CONDENSATE DRAIN IN CONDITIONED AR