Emerson 37C73U Water Heater User Manual


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FOR YOUR SAFETY
“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 re
department.
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS BEFORE INSTALLING OR OPERATING THIS CONTROL COULD
CAUSEPROPERTYDAMAGE,PERSONALINJURYAND/ORDEATH.
RETAININSTRUCTIONSFORFUTUREREFERENCE.
This control must be installed or serviced only by a 1.
professional.
Do not use force when moving the gas control knob. If you 2.
cannot turn the knob with hand pressure only, the control
must be replaced.
Do not use the control if the knob will not “pop up” after 3.
being depressed while the knob is in the PILOT position.
The mechanism is damaged and the control must be
replaced. Shut off gas to the water heater.
For your safety, this control is supplied with tamper 4.
resistant screws. Do not attempt to repair or adjust the
control. If you experience problems, replace the control
immediately. Continuingtouseadamagedcontrol
couldresultinreand/orexplosion.
An odorant has been added to the gas to help you detect 5.
it. Before lighting, search for the odor of gas by sniffing at
floor level around the water heater.
In some situations, the gas may lose its odor. To detect 6.
unodorized gas, you must have a gas detector which can
be purchased from your gas company. If you do not have a
detector and have the slightest suspicion that gas may be
present, get out of the house and call the gas company. DO
NOT RELY TOTALLY ON YOUR NOSE.
37C73U
Water Heater Thermostat Control
Installation Instructions
FOR NATURAL GAS ONLY
PARTNO.37-7202A
1036
FixedAdjustmentMainandPilotRegulators
The main and pilot gas regulators require no field service. They
automatically control and maintain the outlet main and pilot
burner gas pressure.
WARNING
!
DonotusethisNaturalGascontrolonaLPGaswater
heater. Improper operation could occur, resulting in
personal injury and/ordeath dueto CarbonMonoxide
poisoning,re,orexplosion.Checkforpropergastype
aslistedontheratingplateafxedtothewaterheater.
WARNING
!
Scaldburnsoccurinunderonesecondwith160°water,
whichthisthermostatwilldeliverifthetemperaturedial
issetat“VERYHOT”.Lowersettingsofthetemperature
dial willreduce theriskof scaldand willreduce your
fuelbill.
www.white-rodgers.com
www.emersonclimate.com
Model MainRegulator PilotRegulator Flange Outlet FlyingLeads
37C73U168 3.5" W.C. 4.0" W.C. 1-1/4" 42 KBTU/hr No Flying Leads
37C73U170 4.0" W.C. 4.9" W.C. 1" 38 KBTU/hr No Flying Leads
37C73U171 4.0" W.C. 4.0" W.C. 2-1/2" 40 KBTU/hr No Flying Leads
37C73U172 4.0" W.C. 4.0" W.C. 2-1/4" 40 KBTU/hr No Flying Leads
37C73U173 4.0" W.C. 4.0" W.C. 1-1/4" 45 KBTU/hr No Flying Leads
37C73U174 5.0" W.C. 5.0" W.C. 1-1/4" 37.5 KBTU/hr 11" Flying Leads
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