Reznor, PVE, Installation Manual EN 2019-11, D301113 iss D Page 29
Note: When reassembling, the wire must
remain attached to the igniter.
Flame sensor
Locate the flame sensor. Disconnect the wire,
remove the screw and the flame sensor. Clean
with an emery cloth.
Figure 17 : Flame sensor
Control relay
The electronic burner relay monitors the
operation of the heater including ignition.
Do not open the control relay. Each heating
season check the lead wires for insulation
deterioration and good connections. Proper
operation of the direct spark ignition system
requires a minimum flame signal of 1.0 micro-
amps (DC) as measured by a micro-ammeter.
For further information and check out
procedure on the direct spark ignition system,
refer to Ignition System section and the
Troubleshooting Flow Charts.
Fan motor
The fan motor is equipped with thermal
overload protection of the automatic reset
type. Should the motor fail to run, it may be
because of improper voltage characteristics
Make certain that the correct voltage is
available at the motor. Remove dirt and grease
from the motor, the fan guard, and blades.
Use care when cleaning the fan blades to
prevent causing misalignment or imbalance.
Check that the hub of the fan blades is secure
to the shaft.
Follow these instructions for
replacement of the fan guard, fan
motor and/or fan blades
• If the heater is installed, turn off the gas
and disconnect the electric power.
• Open the access door and disconnect the
fan motor wires.
• Remove the fan assembly (fan guard,
motor and fan blade).
• Disassemble and replace parts as needed,
then reassemble. Be sure the fan blade
is in the proper position on the shaft.
Position the assembly on the heater and
attach the fan guard. Rotate the fan blade
by hand to check for adequate clearance.
If adjustment is required, loosen the
mounting screws, reposition the fan guard,
and tighten the screws. Rotate the fan
blade and recheck for adequate clearance.
Repeat this procedure until the assembly is
positioned properly.
• Reconnect the fan motor wires according
to the wiring diagram and close the access
door.
• Restore power to the heater and turn on
the gas. Light, following the instructions
on the lighting instruction plate. Check for
proper operation.
Figure 18 : Control relay Brahma TC340A
Venter motor & wheel
Remove dirt and grease from the motor
casing, the venter housing, and the venter
wheel. Venter motor bearings are permanently
lubricated.
