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. | 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. | 40 KBTU/hr | No Flying Leads | |
37C73U172 | 4.0" W.C. | 4.0" W.C. | 40 KBTU/hr | No Flying Leads | |
37C73U173 | 4.0" W.C. | 4.0" W.C. | 45 KBTU/hr | No Flying Leads | |
37C73U174 | 5.0" W.C. | 5.0" W.C. | 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
1036 | |
www.emersonclimate.com |
