Challenger
Flue Sensor Replacement
2
1. Preliminary Instructions:
1. Verify that the replacement kit is correct for the
model of boiler. See table on page 1.
2. Carefully open and unpack the PARTS BOX from its
shipping carton.
3. Carefully remove and check for any damage.
NOTICE
Do not proceed with installation and contact Triangle Tube
right away if the sensor is damaged in any way.
4. Turn o the electrical power supply to the boiler.
5. Close the manual gas shut o valve to the unit.
2. Accessing Temperature Sensor
1. Remove the front jacket panel by loosening the re-
taining screws on each side of the display (see Fig.
1).
Fig. 1: Loosing Retaining Screws
2. Dismount the front jacket panel by pulling the bot-
tom of the front panel out and the entire front jack-
et panel down.
3. Loosen the ue pipe retaining ring as shown 1 in
Fig. 2.
4. Pull up on the ue pipe to disengage from the con-
densate pan as show in Fig. 3.
5. Pull the ue pipe down and out to disengage from
the vent adapter as shown in Fig. 3.
6. Lift up the condensate pan to disengage from trap.
7. Once the condensate pan is clear of the bottom
jacket, rotate it towards the front of the appliance
and push down on the rear to disengage from the
heat exchanger as shown in Fig. 4.
WARNING
!
Inspect the flue pipe and condensate pan for cracks,
damage or distortion. Check all gaskets for tears, dis-
coloration or other damage. Installing damaged com-
ponents risks a gas leak causing severe personal inju-
ry, death or substantial property damage.
Fig. 2: Loosening of Flue Pipe Retaining Ring
Fig. 3: Removal of Flue Pipe
