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37E73A-903 & 906 INTELLI-VENT™
Water Heater Thermostat Control
Installation Instructions
For Natural Gas Only
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The 37E73A-903/906 INTELLI-IGNITION™ control is a
combination gas valve, ignition control, and thermostat for
use on Power Vented water heaters. The microcomputer in
the co
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SPECIFICATION ELECTRICAL RATINGS: Automatic High Temperature Cutoff: o o Single-Use Type, 185 F(82 C) Input and Frequency: 120 VAC, 60 Hz Output Ratings: Prepurge Time: 5 Seconds Ignitor Load: 2 Amps maximum Ignitor Warm-up Time: 20 Seconds Inducer Draft Motor: 3 Amps Full Load, 4 Amps Locked Trial for Ignition Period: 4 Seconds Rotor Inter-purge Time: 5 Seconds Current: 0.2 Amps @ 120 VAC Post-purge Time: 5 Seconds Range of Regulation (Btu/Hr) Minimum: 30,000
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INSTALLATION 5. For a brief (one to five seconds) all of the indicators on CAUTION ! the front of the control should come on, and then turn off. This indicates that the control has completed the Never use this water heater unless it is completely self-diagnostic test, and is ready for operation. If any filled with water. To prevent damage to the tank, the combination of indicators remain illuminated, either refer tank m ust be filled with water . W ater m ust flo w fr om to th
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INSTALLATION Press and release the HOTTER button until you have WARNING ! reached the desired setting. HOLDING DOWN THE BUTTON WILL NOT CONTINUE TO RAISE THE SETTING. The button Never allow small children to use a hot water tap, or must be pressed and released for each temperature change to draw their own bath water. Never leave a child or desired. impaired person unattended in a bathtub or shower. Scald burns can result To avoid scald injury, set the control to the lowest setting wh
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WIRING DIAGRAM A typical system wiring diagram is shown below. Use the installation. Always follow the instructions supplied with the water heater manufacturer’s wiring diagram for details of the water heater, and those of the water heater manufacturer. ™ Intelli-Vent Wiring Diagram Typical Installation (Consult Appliance Manufacturer's Instructions For Details) TM INTELLI-VENT CONTROL BOTTOM VIEW INSET FLAMMABLE VAPOR SENSOR (IF EQUIPPED) IGNITOR AND FLAME PROBE ASSEMBLY BLACK WHITE
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SEQUENCE OF OPERATIONS APPLY POWER TO APPLIANCE Intelli-Vent™ Sequence of Operation NO DISPLAY ERROR CODE IS FIELD WIRING CORRECT? 1 OR 2 YES NO REQUEST FOR HEAT PRESENT? YES IS WAIT FOR PRESSURE IS WAIT FOR PRESSURE NO NO PRESSURE SWITCH SWITCH TO OPEN PRESSURE SWITCH SWITCH TO OPEN PROVEN OPEN WITHIN DISPLAY ERROR PROVEN OPEN WITHIN DISPLAY ERROR 5 SECONDS? NUMBER 3 5 SECONDS? NUMBER 3 YES YES COMBUSTION COMBUSTION BLOWER ON BLOWER ON ONE HOUR AUTO LOCKOUT RESET DELAY IS IS WAIT FOR PRESSURE
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SEQUENCE OF OPERATIONS TROUBLESHOOTING The troubleshooting charts cover the error codes that the perature setting (see section “Temperature Regulation”). TM Intelli-Vent control can recognize, the potential cause, and If you have noted an error code from a previous heating those actions that may help repair the problem. The water cycle, this step is not necessary, and you may proceed heater manufacturer’s troubleshooting procedure should be with the next step. consulted before attempting t
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TROUBLESHOOTING The self diagnostic test 1. Cycle power to the water heater off for 10 seconds A B C 7 found a problem with the and then back on. gas valve driver circuit 2. If the above step did not cleat the error, the INTELLI-VENT™ control must be replaced The self diagnostic test has 1. Cycle the external power off for 10 seconds and A B C 8 detected a problem with then back on. the internal microcomputer. 2. If the above step does not clear the error, the INTELLI-VENT™ control must
