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Mfg P/N 98807 Rev 8, Page 19
24. Check Installation and Start-Up
Check the installation prior to start-up:
5. Thermostat calls for heat, energizing the venter motor.
6. Venter pressure switch closes, firing the unit, after pilot prov-
ing sequence.
7. Fan control senses heat exchanger temperature, energizing
the fan or blower motor.
8. If the flame is extinguished during the main burner opera-
tion, the safety switch closes the main valve and recycles the
spark gap.
On units equipped with lockout device, if the pilot is not es-
tablished within 120 seconds, the unit locks out and must be
reset by interrupting power to the control circuit. (See light-
ing instructions on the heater.)
Check installation after start-up:
o With the unit in operation, measure manifold gas pressure.
Manifold pressure for natural gas should be 3.5" w.c. and
10" w.c. for propane gas. See Paragraph 10.
o Turn the unit off and on, pausing two minutes between each
cycle. Observe for smooth ignition.
o Blower Model - Check motor amps with an amp meter. The
maximum amp rating on the motor nameplate must not be
exceeded.
o Place 'Owner's Envelope" containing Limited Warranty Card,
this booklet, and any optional information in an accessible
location near the heater. Follow the instructions on the enve-
lope.
o Check suspension. Unit must be secure and level.
o Blower Model - Check to be sure that all shipping supports
have been removed. Rubber feet must be on the motor bracket
bolts. See Paragraph 4.
o Check clearances from combustibles. Requirements are shown
in Paragraph 6.
o Check vent system to be sure that it is installed according to
the instructions in Paragraph 9.
o Check piping for leaks and proper gas line pressure. Bleed
gas lines of trapped air. See paragraph 10.
o Check electrical wiring. Be sure all wire gauges are as rec-
ommended. A service disconnect switch should be used.
Verify that fusing or circuit breakers are adequate for the load
use.
o Check that any field-installed options have been included in
the installation.
o Blower Model - Check belt tension. See Paragraph 14.
Start-Up -- Typical Operating Sequence:
1. Set thermostat at lowest setting.
2. Turn on main and pilot manual gas valves.
3. Turn on the power to the unit.
4. Set the thermostat to desired setting.
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 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.
Always comply with the combustion air requirements in the installation codes and in Paragraphs
6 and 7. 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. Indoor units installed in a confined space must be supplied with air for
combustion as required by Code and in Paragraph 7 of this heater installation manual. MAINTAIN
THE VENT SYSTEM IN STRUCTURALLY SOUND AND PROPERLY OPERATING
CONDITION.