Reznor SFT Unit Installation Manual User Manual
Page 18
Form RZ -NA-I-SFT, Mfg No. 173474 (Rev 6), Page 17
DANGER: The gas burner in this gas-fired equipment is designed and equipped to provide safe and
economically controlled 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 separated-combustion, indirect-fired gas burning equipment requires a sealed, 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.
Install either the horizontal or vertical combustion air/vent system illustrated in Paragraph 9 using the
concentric adapter supplied. Always comply with the combustion air requirements in the installation
codes and instructions. Combustion air at the burner should be regulated only by manufacturer-provided
equipment. NEVER RESTRICT OR OTHERWISE ALTER THE SUPPLY OF COMBUSTION AIR
TO ANY HEATER. CHECK THE COMBUSTION AIR/VENT SYSTEM FOR SOUNDNESS AND
FUNCTION; MAINTAIN IT IN PROPER OPERATING CONDITION.
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 or lever clockwise to "OFF". Do
not force.
5) Close the access door.
Check installation after start-up:
If the heater is being derated for high altitude operation (See Para-
graph 5), follow the instructions in Paragraph 10 to adjust the mani-
fold pressure. Be sure to complete the "change pressure" tag and
adhere it on the heater close to the gas valve.
If unit is not being derated, measure to verify manifold gas pres-
sure. Follow instructions in Paragraph 10.
Turn the unit off and on, pausing two minutes between each cycle.
Observe for smooth ignition.
Place the "Owner's Envelope" containing the Limited Warranty, this
booklet, and any control or optional information in an accessible
location near the heater. Follow the instructions on the envelope.