810
Thermo plus 160/230/300/350 8 Repairs
Installation
ATTENTION:
When replacing the combustion chamber, ensure that
the new combustion chamber corresponds to the
heating capacity class of your heating appliance.
1. Slide combustion chamber (1, Fig. 808) fully into the
heat exchanger (2) against stop. Pay attention to
a) the welding seam position, and
b) the position of cut-outs in the combustion chamber
head
NOTE:
– The combustion chamber should be inserted into the
heat exchanger in such a way that its welding seam is
positioned between 2 and 10 o clock (not upwards!)
(Fig. 808).
A position change during maintenance is permissible
and affects the expected service life of the combustion
chamber positively.
– Position the cut-outs in the combustion chamber head
as shown in Fig. 808.
Dripping from nozzle fuel is so collected in a reservoir
between disc and combustion chamber head and will
be burned at the next burner operation instead to soil
the heater.
2. Install burner head (see 8.2).
8.13 Heat exchanger removal and
installation
Removal
1. Disconnect the heater from the vehicle electrical
system (Observe 5.2 !).
2. Disconnect the temperature sensor plug (3, Fig. 801).
3. Remove combination screws (2) and remove burner
head (1) from heat exchanger.
4. If necessary, loosen the exhaust line clamp on the
exhaust outlet (3, Fig. 808).
5. If available, close water taps.
Risk of scalds if coolant temperature is increased.
6. Loosen hose clamps on the coolant hoses, pull coo-
lant hoses from the coolant inlet (5) and the coolant
outlet (6) and seal with blank plugs.
7. Remove screws and washers of the heat exchanger
stand (4).
8. Pull combustion chamber (1) out of the heat exchan-
ger (2).
9. If necessary remove temperature sensor (see 8.3).
10. Remove heat exchanger from vehicle.
Installation
1. Position the combustion chamber (1) correctly into the
heat exchanger (2) (see Fig. 808).
2. If necessary install the temperature sensor (see 8.3).
3. Bring heat exchanger (2, Fig. 808) into installation
position and mount stand (4) using screws, nuts and
washers to the vehicle according to the mounting
points used.
4. If necessary, secure the exhaust line using a clamp to
the exhaust outlet (3).
5. Fit coolant hoses (7) onto the coolant inlet (5) and the
coolant outlet (6) and secure with hose clamps.
6. If available, open water taps.
7. Bring burner head (1, Fig. 801) in assembly position
and ensure center alignment and correct fit.
8. Place nuts (2) and alternately tighten them slightly.
9. Tighten nuts (2). For tightening torque, refer to Fig.
801.
10. Connect the heater with the vehicle electrical system.
11. Bleed coolant ciruit (see 8.15.2).
ATTENTION:
The two combination nuts M8, connecting the burner
head and the heat exchanger, must be tightened to
torque, see Fig. 801, each and additional are to be
secured using thread lock.
8.14 Heater removal and installation
NOTE:
The fuel supply system must be subsequently bleeded
(see 8.15.1).
The coolant circuit must be subsequently bleeded (see
8.15.2).
Removal
1. Remove burner head (see 8.2).
2. Remove heat exchanger (see 8.13).
Installation
1. Install heat exchanger (see 8.13).
2. Install burner head (see 8.2).
3. Bleed coolant circuit (see 8.15.2).
Risk of scalds!
Caution!
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