RSD Series Installation Guide

Form #43219040
Jan 2014
C) TROUBLESHOOTING CHART
TROUBLE
POSSIBLE CAUSE
SOLUTIONS
Heater is not glowing
red…
 The supply gas pressure is too low.
 Improper size of gas piping.
 The orifice is clogged.
 Incorrect orifice size.
 Check the manifold gas pressure and
adjust if necessary.
 If you are not sure of the performance,
use the NFPA 54 gas pipe sizing table.
 Clean the orifice.
 See the instructions for correct orifice
size and replace if necessary.
Heater will not
attain the desired
temperature…
 There is insufficient heat in the building
for heat loss (i.e., not enough heaters).
 The thermostat sensing bulb is
incorrectly placed.
 The thermostat is out of calibration.
 Conduct heat loss and add heaters or
other source of heat as necessary.
 Reposition as necessary for proper
operation. NOTE: The sensing bulb
should be shielded from direct radiation
to prevent short cycling of the heater.
 Recalibrate (if possible) or replace.
Flames flaring up,
outside of emitter
surface…
 The gas pressure is too high.
 Incorrect orifice size.
 Incorrect type of gas supplied to the
heater.
 Not enough combustion air.
 Check the manifold gas pressure and
adjust if necessary.
 See instructions for correct orifice size
and replace if necessary.
 Check the nameplate to identify the
correct type of gas the heater is equipped
to operate.
 Clean the emitter with compressed air.
17