Initial Sta rt-up and Service
38
Service Procedure
1. Shut down heating system
Service
Service
1. Deactivate main power and ensure
against accidental reactiv ation.
2. Disconnect
plug.
3. Close gas supply valve.
2. Cleaning heat exchanger
Service
Service
1. Disconnect power supply to boiler
and all heating related components.
2. Close main gas shut-off valve. Allow
boiler to cool if necessary.
3. Remove top panel, upper front panel
and front acces s panel.
4. Disconnect vent pipe from fan
assembly.
5. Unscrew and remove box collector
(4 screws).
Remove fan motor assembly and
inspect blower wheel for any
obstructions and/or deformations.
Clean as required.
6. Disconnect gas line from boiler.
7. Disconnect connection wiring
between gas train and main boiler
control panel.
8. Remove gas burner assembly from
boiler (refer to section entitled Gas
Burner Removal on page 28).
9. Clean fins by brushing diagonally
through sections as shown in the
diagram on the left.
5167 450 v1.4
Fig. 18
Do not use water to clean.
CAUTION
Do not use water to clean cast iron
heat ex changer. Use provided brush
and vacuum cleaner.
CAUTION
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