White Rodgers 927 Thermostat User Manual


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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.
“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.
www.white-rodgers.com
www.emersonclimate.com
37E73A-918, 921, 922 or 927 INTELLI-VENT™
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. 37-7110A
0950
The 37E73A-9XX 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.
Adjustable Regulator Controls: The gas regulator on this
control requires no field service. The regulator is factory
adjustable for the proper burner gas pressure.
DESCRIPTION
PRECAUTIONS
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specied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ame.
• 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ooded.
• Neverstandonthecontroloruseasastep.
WARNING
!
WARNING
!
WARNING
!
CONTENTS
Description ............................................................. 1
Precautions ............................................................ 1
Specifications ......................................................... 2
Installation .............................................................. 2
Operation ................................................................ 7
Wiring ..................................................................... 6
Troubleshooting ...................................................... 8
Water Heater Thermostat Control Installation Instructions
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