Webasto Thermo 90 Workshop Manual

Thermo 90 9 Repair
907
9.2.6 Replacement of Burner, Flame Sensor,
and Glow Plug
9.2.6.1 Removal
1. Remove heater (see 8.7.1.1).
2. Remove combustion air
fan (see 9.2.5.1).
3. Remove screw (5, Fig. 905) and washer (4).
4. Remove nuts (10) and withdraw bracket.
5. Withdraw grommets (11 and 12) from slots in housing
of com
bustion tube (3).
6. Withdraw grommet (13) and burner (1) from burner
hea
d and remove together with swirl ring (2).
7. Pull flame sensor (7) and glow plug (6) out of burner
(1
) and remove.
8. Perform burner visual inspect
ion for assessment of
condition (see 5.3).
9. Perform procedures on components after
disasse
mbly (see 9.1.1).
9.2.6.2 Installation
1. Locate swirl ring (2, Fig. 905) on burner (1).
2. Carefully and fully insert flame sensor (7) and glow
plug
(6) into burner against stop and slide grommets
(11 and 12) down slots in housing of combustion
tube (3).
3. Position burner (1) and grommet (13) in burner
hea
d (3).
CAUTION
When performing the following step ensure that cables of
flame
sensor (7) and glow plug (6) are routed as shown in
figure.
4. Slide insulation (9) onto bracket and locate
bracket (8) in assembly position.
NOTE
Route cables of flame sensor and glow plug as shown
in Figure!
5. Secure bracket (8) using nuts (10). Torque nuts to
3 Nm ± 10%.
6. Secure fuel line with screw (5) and washer (4). Torque
screw
to 3 Nm ± 10%.
7. Mount combustion air fan (see 9.2.4.2).
8. Make electrical connections (see 9.2.1.2).
9. Install heater (see 8.7.1.2).
Glow Plug
Flame Sensor

Webasto Thermo 90 Specifications

General

Brand	Webasto
Model	Thermo 90
Category	Water Heater
Language	English