Reznor RPBL Unit Installation Manual - Manual (Page 53)

Form I-SSCBL/RPBL, P/N 149159 R7, Page 53
9.2 Start-Up
 Close all panels tightly. Turn electric and gas supply on to the furnace. Adjust
the thermostat or ductstat so that a call for heat exists. Observe for complete
sequencing of safety pilot and ignition.
Operating Sequence
1. Set the thermostat switch at its lowest setting.
2. Turn on power.
3. Turn on the manual gas valves.
4. Set thermostat at desired setting.
5. Thermostat calls for heat
a) The venter motor is energized after 15-second
(approximate) time delay.
b) Venter flow switches from N.C. to N. O. contacts,
energizing the pilot gas valve and spark gap
to produce a pilot flame on each operating
cycle. The sensing probe proves the presence
of the pilot flame and energizes the safety
switch portion of the control. The switch action
de-energizes the spark gap and energizes the
main valve. The main gas ignites and the unit
fires at full rate.
c) If the flame is extinguished during main burner
operation, the safety switch closes the main valve
and recycles the spark gap. On a unit equipped
with a controller with lockout, if the pilot is not
established within 120 seconds (approximately),
the unit locks out for one hour, unless reset by
interrupting the power to the control circuit (See
Lighting Instructions).
6. Blower motor operates from fan time delay.
7. Thermostat is satisfied.
a) Solenoid gas valve de-energized.
b) Pilot gas valve de-energized.
c) Ignition controller de-energized.
d) Time delay relay keeps venter motor on for
approximately 90 seconds (post purge).
8. To shut down, set thermostat to lowest setting.
Blower motor remains on as determined by fan time
delay.
9.3 Check
installation after
Start-up:
 Observe burner flame at full fire. Natural gas flame should be about 1-1/2" in height
with blue coloring. Propane gas flame should be approximately the same length
with blue coloring. Yellow tipping may appear on propane gas. If yellow extends
beyond 1/2 to 3/4", adjust air shutters. See Paragraph 8.11. If shutter adjustment
will not reduce yellowing, check for gas leaks at the control manifold or orifice
fitting.
 Turn the unit off and on, pausing two minutes between each cycle. Observe
for smooth ignition. On two-stage or modulating burner systems, manipulate
temperature adjustment slowly up and down to see if control is sequencing or
modulating properly. Raising temperature setting drives burner on or to full fire.
 Using a manometer or slant gauge readable up to 14" w.c., check orifice manifold
for operating pressure on full fire. Natural gas should be 3.5" w.c. at this point.
Propane gas should be 10" w.c. at this point. Variations from these pressures
are not recommended, as ignition and efficiency performance can be adversely
affected by improper pressure adjustment. See Paragraph 6.1.
 With optional dirty filter switch - Set switch. See Paragraph 6.3.4.
 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 envelope.
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 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 6.2
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.