Reznor SHH (Indoor PreevA) Unit Installation Manual - Manual (Page 64)

Form I-PDH/SDH/PEH/SHH/PXH, Page 64
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Adjust the control so that a call for heat exists. Observe for complete sequencing.
Operating Instructions and Heating Sequence of Operation - PDH/SDH/SHH
1. Set thermostat at lowest setting.
2. Turn off all electric power to the appliance.
3. This appliance is equipped with an ignition device which automatically lights the
burner. Do not try to light the burner manually. Open the door and locate the gas
control (ON/OFF) knob on the gas valve.
4. Turn the gas control knob clockwise to “OFF”.
5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the
floor. If you smell gas, STOP! and follow the steps in the WARNINGS printed
above or on the Operating Label on the heater. If you do not smell gas, proceed to
the next step.
6. Turn the gas control knob counterclockwise to “ON”.
7. Close and latch access door.
8. Turn on the electric power to the heater.
9. Set thermostat or other control to the desired setting.
NOTE: If the appliance does not operate, follow the instructions “To Turn Off Gas to
Appliance” printed below (and on the Operating Label on the heater) and call your
service technician.
10. Control calls for heat, energizing the venter motor.
11. Venter pressure switch closes, firing the unit.
12. Burner flame is sensed and in 30 seconds after the gas valve is energized, the
blower motor is energized.
13. If the flame is extinguished during the main burner operation, the integrated
control system closes the main valve and must be reset by interrupting power to
the control circuit. (See lighting instructions on the heater.).
TO TURN OFF GAS TO THE APPLIANCE
1) Set thermostat to lowest setting
2) If service is to be performed, turn off all electric power to the appliance.
3) Open the access door.
4) Turn the gas control knob clockwise to “OFF”. Do not force.
5) Close and latch the door.
9.3 Startup Checklist
and Warnings
(cont’d)
9.0 Commissioning
and Startup
(cont’d)
• Before operating, 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 start any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• Immediately call your gas supplier from a phone remote from the
building. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call your fire department.
• PDH, SDH, and SHH - Use only your hand to turn the gas control ON/OFF
knob on the gas valve. Never use tools. If the valve ON/OFF knob will not
turn by hand, do not try to repair it. Call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
• PDH, SDH, and SHH - Should overheating occur, or the gas supply fail to
shut off, turn off the manual gas valve to the appliance before shutting off
the electrical supply.
• All Models - Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the appliance
and to replace any part of the control system and any gas control which
has been under water.