Reznor RXH (Outdoor PreevA) Unit Installation Manual - Manual (Page 62)

Form I-RDH/REH/RHH/RXH (12-14), Page 62
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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 - Gas-Fired
Models RDH and RHH
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 by hand. 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.
DANGER
The gas burner in Models RDH and RHH is designed to provide safe, complete combustion.
However, if the installation does not permit the burner to receive the proper supply of
combustion air, complete combustion may not occur. The result is incomplete combustion
which produces carbon monoxide, a poisonous gas that can cause death.
Safe operation of indirect-fired gas burning equipment requires a properly operating vent
system which vents all flue products to the outside atmosphere. FAILURE TO PROVIDE
PROPER VENTING WILL RESULT IN A HEALTH HAZARD WHICH COULD CAUSE SERIOUS
PERSONAL INJURY OR DEATH.
• RDH and RHH - 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.
• RDH and RHH - 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.
• 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.
9.0 Commissioning and Startup (cont’d)
9.3 Startup Warnings and Checklist (cont’d)