Intergas Heating Ltd
48
12
MAINTENANCE
The appliance and the installation should be checked and if necessary cleaned every year
by a registered expert.
For assembly and disassembly the following tools can be used:
1. Cross head screwdriver
2. Allen key 8 mm
3. Fork spanner 30 mm
After servicing, complete the relevant Benchmark Service Record section located on page
51 of this document.
CAUTION
Work on gas carrying parts may only be carried out by an
authorised installer.
When the appliance has just been operating parts may be hot.
CAUTION
The integrated insolation and burner seal contain ceramic fibres.
12.1
Disassembly
1.
Switch the boiler off and isolate the boiler from the mains power.
2.
Close the gas tap.
3.
Open the display cover and turn the two screws on the left- and right-hand side of
the display and remove the front panel.
4.
Wait until the appliance has cooled down.
5.
Unscrew the coupling nut at the base of the flue pipe anti-clockwise.
6.
Slide the flue pipe upwards (1) turning it anti-clockwise until the bottom of the pipe is
above the condensate drain pan connection. Pull the bottom of the pipe forwards (2)
and remove the pipe downwards (3) turning it anti-clockwise.
7.
Lift the condensate drain pan on the left-hand side from the connection to the
condensate trap (4) and turn it to the right with the condensate trap connection over
the edge of the base tray (5). Push the back of the condensate drain pan downward
from the connection to the heat exchanger (6) and remove it from the appliance.
8.
Remove the connector from the fan and the ignition unit from the gas valve.
9.
Unscrew the coupling below the gas valve.
10.
Unscrew the shoulder bolts from the front cover and remove this complete with gas
valve and fan to the front (NB: ensure that the burner, insulation plate, gas valve, gas
supply and fan do not get damaged).
Note
When the appliance is connected to a wall mounting jig with built-in expansion vessel a
regular inspection of the expansion vessel pressure is advisable. Access to re-pressurise
the expansion vessel is at the rear back of the vessel.
12.2
Cleaning
1.
Clean the heat exchanger from top to bottom with a plastic brush or compressed air.
2.
Clean the underside of the heat exchanger.
3.
Clean the condensate drain pan with water.
4.
Clean the condensate trap with water.
CAUTION
The boiler is equipped with a non-return valve (A),
positioned above the fan. Check that the valve is still in
good condition and ensure the non-return valve is
repositioned correctly when replacing the fan.
