Reznor B Unit Installation Manual - Manual (Page 32)

Form I-F/B, P/N 98126 R21, Page 32
9. Commissioning and Start-Up
9.1 Check the installation prior to start-up:
 Check suspension. Unit must be secure and level.
 Blower Model - Check to be sure that all shipping supports have been removed. Rubber feet must be
on the motor bracket bolts. See Paragraph 3.2.
 Check clearances from combustibles. Requirements are shown in Paragraph 4.1.
 Check vent system to be sure that it is installed according to the instructions in Paragraph 6.2.
 Check piping for leaks and proper gas line pressure. Bleed gas lines of trapped air. See paragraph 6.1
 Check electrical wiring. Be sure all wire gauges are as recommended. A service disconnect switch
should be used. Verify that fusing or circuit breakers are adequate for the load use.
 Check that any field-installed options have been included in the installation.
 Blower Model - Check belt tension. See Paragraph 6.5. Check the setscrews.
9.2 Start-Up
Typical Operating Sequence for Units with Optional Spark Pilot System with Timed Lockout:
1. Set the thermostat at its lowest setting.
2. Turn on the main and pilot manual gas valves.
3. Turn on the power to the unit.
4. Set the thermostat at the desired setting.
5. Thermostat calls for heat, firing the unit at full rate after pilot proving sequence.
6. Fan Control senses heat exchanger temperature, energizing the fan or blower motor.
7. If the flame is extinguished during the main burner operation, the safety switch closes the main valve and
recycles the spark. If the pilot is not established within 120 seconds, the unit locks out and must be reset
by interrupting the power to the control circuit. (See lighting instructions on the heater.)
9.3 Check installation after start-up:
 With the unit in operation, measure manifold gas pressure. See Paragraph 6.1.
 Turn the unit off and on, pausing two minutes between each cycle. Observe for smooth ignition.
 Check drafthood relief opening for positive pressure.
 Blower Model - Check motor amps with an amp meter. The maximum amp rating on the motor name-
plate must not be exceeded.
 Place "Literature Bag" containing Limited Warranty Card, this booklet, and any optional information in an
accessible location near the heater. Follow the instructions on the bag.
DANGER: The gas burner in this gas-fired equipment is designed and equipped 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.
Always comply with the combustion air requirements in the installation codes and
in Paragraphs 2.2 and 4.1. 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 2.2 of this manual.
MAINTAIN THE VENT SYSTEM IN STRUCTURALLY SOUND AND PROPERLY OPERATING
CONDITION.