Pressure Testing Heater Gas Connections:
1.Make sure that the heater supply piping system is connected and has been leak tested as described above.
2.Make sure control knob of heater is in OFF position.
3.Open equipment shutoff valve (see figure 13).
4.Open main gas valve on or near gas meter.
5.Check all joints from equipment shutoff valve to control valve (see figure 14). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.
6.Correct all leaks at once.
7.Light heater (see Operating Your Heater, pages 11 and 12 for thermostat models or pages 9 and 10 for
8.Turn off heater (see To Turn OFF Gas to Appliance, page 12 for thermostat models and page 11 for
9.Replace lower front panel.
Open
Equipment
Closed
Shutoff Valve
Figure 13
Control Valve
Gas Meter
Equipment
Shutoff Valve
Figure 14
ELECTRICAL WIRING DIAGRAM:
Figure 15
If any original wiring as supplied with the heater must be replaced, it must be replaced with type AWG 105oC wire or its equivalent except as indicated.
WARNING: Electrical Grounding Instructions: This heater is equipped with a
OPERATING YOUR HEATER
MHIR10NG / MHBF10NG / TSIR10NG / TSBF10NG
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
A.This appliance has a pilot that must be lighted by hand. When lighting the pilot, follow these instructions exactly.
B.BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
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 you gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
•If you can not reach your gas supplier, call the fire department.
9Installation instructions and Owner’s Manual
