White Rodgers 37E37A-903 & 906 User's Manual
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
• Shutoffmaingastoapplianceforserviceoruntil
installation is complete.
• Disconnectelectricpowerbeforeservicing.
• Donotexceedthespecifiedvoltage.
• Replace existing control with recommended
model.
• Protectthecontrolfromdirectcontactwithwater
(dripping, spraying, rain, etc.)
• Ifthecontrolhasbeenindirectcontactwithwater,
replace the control.
• Labelallwiresbeforedisconnectionwhenservic-
ing controls. Wiring errors can cause improper and
dangerous operation.
• Routeandsecurewiringawayfromflame.
• Ensureproperearthgroundingofappliance.
• Ensureproperconnectionoflineneutralandline
hot wires.
• Donotusetoolstooperatethiscontrol.
• Donottakecontrolapart,therearenoserviceable
parts inside.
• Donotusecontrolifithasbeenflooded.
• Neverstandonthecontroloruseasastep.
WARNING
!
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