White Rodgers 37C73U installation instructions Retain Instructions for Future Reference, KBTU/hr

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37C73U

Water Heater Thermostat Control

Installation Instructions

FOR NATURAL GAS ONLY

RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.

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.

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 fire department.

!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, fire, or explosion. Check for proper gas type as listed on the rating plate affixed to the water heater.

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

 

 

 

 

 

 

FAILURETO READ AND FOLLOW ALL INSTRUCTIONS BEFORE INSTALLING OR OPERATINGTHIS CONTROL COULD CAUSE PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH.

1.This control must be installed or serviced only by a professional.

2.Do not use force when moving the gas control knob. If you cannot turn the knob with hand pressure only, the control must be replaced.

3.Do not use the control if the knob will not “pop up” after 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.

4.For your safety, this control is supplied with tamper 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 fire and/or explosion.

5.An odorant has been added to the gas to help you detect it. Before lighting, search for the odor of gas by sniffing at floor level around the water heater.

6.In some situations, the gas may lose its odor. To detect 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.

!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.

PART NO. 37-7202A

www.white-rodgers.com

1036

www.emersonclimate.com

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Contents For Your Safety What to do if YOU Smell GAS Fixed Adjustment Main and Pilot RegulatorsRetain Instructions for Future Reference KBTU/hrInstalling NEW Control InstallationRemoving OLD Control Gas Valve/Thermostat with ignitor To Light ApplianceTo Turn OFF GAS to Appliance Temperature RegulationTurn gas control knob clockwise to OFF
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37C73U, 37C73U specifications

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