Reznor RXH (Outdoor PreevA) Unit Installation Manual - Manual (Page 59)

Form I-RDH/REH/RHH/RXH (12-14), P/N 215210 R14, Page 59
.436 (centerline of ignitor to top of ribbon)
8.4.3 Ignitor Location Proper location of the ignitor to the burner is shown in FIGURE 55A. Ignitor spark gap
is shown in FIGURE 55B. The ignitor is the same for all gas control options.
1/8 inch
(3.2mm)
FIGURE 55A - Ignitor Location
FIGURE 55B - Ignitor Spark Gap
LED 3-Character Display (displayed on power up)
Display Info (example only) Description
RDH Furnace series or model name
400 Heat Section Size
nAt or LP Fuel type
1.01 Software version
NOTE: Operating and
Lockout Error Codes
displayed on the ignition
controller 3-character
display ( FIGURE 53) are
listed in Troubleshooting
Paragraph in the
Operation/Maintenance/
Service Manual, Form
O-PREEVA.
FIGURE 54 - Spark Ignition
Board, P/N 257975, is located
on the removable shield at the
end of the burner.
CAUTION: Due to high voltage on the spark wire and electrode,
do not touch when energized. See Hazard Levels, page 2.
8.4.2 Ignition Control
Module used in Deep
Modulation Control
Options AG58 and
D12G
Integrated Control Module for Gas Control Options AG58 and D12G - The con-
trol module is located in the control compartment with an additional board to
control spark that is attached to the removable shield on the end of the burner.
FIGURE 53 -
Integrated
Control Module
(Circuit Board),
for Deep
Modulation
Options AG58
and D12G
3-Character Display
ID Plug
(unique by
model, size,
and type of
gas)
IMPORTANT: The control
module is P/N 260252 for
all sizes of Model RDH
and P/N 260917 for all
sizes of RHH heat sec-
tions. However, the ID plug
on each board is unique for
each model, size, and type
of gas. A replacement board
will require either a new
ID plug or reuse of the ID
plug from the board being
replaced.
Except for the replaceable parts shown, do not attempt to disassemble either
board. Each heating season check the lead wires for insulation deterioration
and good connections.
If replacement is required, these boards must be replaced with identical parts.
The control has a built-in, self-diagnostic capability. The control continuously monitors
its own operation and the operation of the heat section including direct spark ignition,
safety and modulating valves, and venter motor speed. The 3-digit display on the con-
trol indicates the current system state, warnings, failures, and test modes.