Emerson 37E73A-903 - Manual
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Table of Contents:
- Page 2 – SPECIFICATION; Seconds; INSTALLATION; REMOVING THE OLD CONTROL; NOTE
- Page 3 – OPERATING INSTRUCTIONS; Figure 1. Typical gas connection; TEMPERATURE REGULATION; Figure 2. Temperature Indicators and Adjustment
- Page 4 – WARNING; SHUTTING OFF THE APPLIANCE; Vacation Shutdown
- Page 5 – Wiring Diagr am; WIRING DIAGRAM
- Page 6 – SEQUENCE OF OPERATIONS
- Page 7 – Error; STOP! Contact a trained; TROUBLESHOOTING
www.white-rodgers.com
www.emersonclimate.com
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.
PART NO. 37-7109A
0951
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 control supervises the ignition sequence and timings
for the water heater, and provides diagnostic codes in case
of system malfunction. The control provides direct burner
ignition using the White-Rodgers’ Silicon Nitride ignitor. The
control uses the INTELLI-IGNITION™
technology to greatly
extend the ignitor’s life.
Fixed Adjustment Regulator Controls:
The gas regulator
on this control requires no field service. The regulator
automatically controls and maintains the burner gas pressure.
DESCRIPTION
PRECAUTIONS
Do not use this Natural Gas control on LP Gas water
heater. Improper operation could occur, resulting in
personal injury and/or death due to Carbon Monoxide
(CO) poisoning, fire, or explosion. Check for proper
gas type as listed on the rating plate affixed to the
water heater.
WARNING
!
CONTENTS
Description ............................................................. 1
Precautions ............................................................ 1
Specifications ......................................................... 2
Installation .............................................................. 2
Wiring ..................................................................... 5
Operation ................................................................ 6
Troubleshooting ...................................................... 7
“WHAT TO DO IF YOU SMELL GAS”
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use any
phone in your building.
•
Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s Instructions
.
•
If you cannot reach your gas supplier, call the fire
department.
WARNING
!
FIRE, SHOCK AND EXPLOSION HAZARDS
• Shut off main gas to appliance for service or until
installation is complete.
• Disconnect electric power before servicing.
• Do not exceed the specified voltage.
• Replace existing control with recommended
model.
• Protect the control from direct contact with water
(dripping, spraying, rain, etc.)
• If the control has been in direct contact with water,
replace the control.
• Label all wires before disconnection when servic-
ing controls. Wiring errors can cause improper and
dangerous operation.
• Route and secure wiring away from flame.
• Ensure proper earth grounding of appliance.
• Ensure proper connection of line neutral and line
hot wires.
• Do not use tools to operate this control.
• Do not take control apart, there are no serviceable
parts inside.
• Do not use control if it has been flooded.
• Never stand on the control or use as a step.
WARNING
!
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Summary
2 SPECIFICATION ELECTRICAL RATINGS: Input and Frequency: 120 VAC, 60 Hz Output Ratings: Ignitor Load: 2 Amps maximum Inducer Draft Motor: 3 Amps Full Load, 4 Amps Locked Rotor Current: 0.2 Amps @ 120 VAC Range of Regulation (Btu/Hr) Minimum: 30,000 Maximum: 150,000 1.0” Pressure Drop Capacity a 100,...
3 GROUND JOINT UNION INTELLI-VENT™ CONTROL GAS SUPPLY PIPE TEE DRIP LEG (SEDIMET TRAP) 3" MINIMUM (MANDATORY) PIPE CAP SHUT-OFF VALVE 8. Open the gas shutoff valve.9. BEFORE TURNING ON THE APPLIANCE, CHECK THE GAS LINES FOR LEAKS. a. Use a soapy water solution. DO NOT test for gas leaks using a ...
4 Table 1. Temperature Settings Display A B C Approximate Temperature ( +10 o F) Approximate Time to Cause Injury 70 (Vacation) N/A 110115120 5 minutes 125130 30 seconds 135140 5 seconds 145150 1.5 seconds 160 under 1 second Flashing WARNING ! Never allow small children to use a hot water tap, or to...
