40
of 53
Follow these steps to replace the damper motor:
Step
Action
1
Switch off all the powers of the unit
2
Unscrew the 13-M4 nuts on the two side flanges and top flange, and
remove the front cover
3
Unscrew the 12-M4 torx screws on the back cover and then remove the
back cover
4
Unscrew the 13-M4 torx screws on the upside cover and then remove
the cover
5
Unscrew the 2-M4 torx screws and 2-M4 nuts which all fixed the damper
motor cover, and then remove the cover
6
Unscrew the 8-M4 torx screws on the controller box cover, and then
remove the cover
7
Unplug the connector linked to the damper motor in the controller box
8
Unscrew the 2-M4 nuts fixed the damper motor, and exchange it
9
Mounting and connect the new damper motor by the step 2 to 8 in re-
verse order
10
Switch on power
Replacement of the heater kit (option)
The heater element is to keep the temperature on an adequate level at low ambient temperature.
When to replace
The heater only needs to be replaced when it is faulty. The typical faulty would be that the unit will not
be heating.
Before you start
Before you start make sure that you have the following available:
A Torx 20 screwdriver
A spanner
A new heater, see “spare parts” for details
Caution
Only trained or certified technicians are allowed to carry out the replacement of parts. Remember that
all power to the unit must be switched off or disconnected before start any service work on the unit.
Illustration
This illustrates where the heater is placed.
Summary of Contents for DCU22-2000DH
Page 51: ...51 of 53 12 Appendix Dimension...
Page 52: ...52 of 53 Wiring diagram...
