Technical data
8 Servicing Thermo Top E and Z/C
6
8.7 Removal and Installation
CAUTION
In the heater installed condition only the circulation pump
removal and installation is permitted should accessibility
allow for such action (see 9.2.1).
8.7.1 Heater, Removal and Installation
8.7.1.1 Removal
1. Disconnect heater power supply by removing 20 A flat
fuse (yellow) from Webasto fuse holder.
2. Disconnect electrical connections from heater.
Disconnect antenna cable to Telestart receiver T60 at
screw type locking connector.
3. Open radiator cap for depressurisation, then close
cap.
NOTE
Collect coolant escaping in a vessel or prevent coolant
from escaping by using squeezing tongs.
4. Loosen hose clamps and disconnect coolant hoses
from heater.
5. Loosen heater from its mount.
6. Loosen hose clamps, disconnect fuel line and close
with suitable plug or any other means.
8.7.1.2 Installation
1. Locate heater for installation.
2. Connect fuel line to heater and secure with hose
clamp.
3. Connect coolant hoses and secure with spring band
steel clamps.
4. Restore all electrical connections at connector
terminal.
5. Connect antenna cable to Telestart T60 receiver as
required.
6. Re-install 20 A flat fuse (yellow) in fuse holder.
7. Bleed coolant circuit.
8. Bleed fuel system as required.
8.7.2 Timer, Removal and Installation
Timer removal and installation is to be performed in
accordance with Fig. 809. For initial installation use drilling
stencil. The electrical connection is shown in Section 7.
CAUTION
During installation do not exert pressure on display.
NOTE
Only the timer shown in Fig. 809 may be used in
combination with the heater.
Fig. 809 Timer, Removal and Installation
8.8 Initial Operation
After heater installation the coolant circuit as well as the
fuel supply system must be carefully bled observing the
relevant manufacturer's instructions.
During the heater test run inspect all coolant and fuel
connections for leakage and security. Should the heater
during operation enter an error lockout condition, perform
troubleshooting (see Section 5).