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4.2.2 INSTALLATION WITH HORIZONTAL
CONNECTIONS
• Before fitting the unit on the support plate, connect the
condensate discharge pipe and the connecting pipes and
connect them using adhesive tape.
• Install them in the custom-made housing. Leave the ins-
tallation clear along the front.
4.2.3 INSULATION OF PIPES
• The insulation concerns the water return and inlet pipes.
• Use polyethylene sheathing at least 6 mm thick.
• After connecting the pipes and checking for leaks, put the insulating sleeves on the
fittings and force them against the cassette in order to prevent condensation.
Note : This operation must be done carefully to avoid any risk of condensation.
4.2.4 PURGING THE AIR HANDLER'S WATER CIRCUIT
• Done by means of a purge screw located on the water coil's header.
• To have access to the screw, remove the air handler's cover.
MW 2
MW 3
• Then act on the purge screw.
4.3 ELECTRICAL CONNECTIONS
4.3.1. PRINCIPLE
• Control by action on ventilation.
5
6
3
°C
3
2
1
20
(*) To be fitted only for a unit operating in cooling and in heating.
1
2
4
Insulation
Pipes
MW 4
MW 5
1 - Power supply and protection device
2 - Power cable
3 - Thermostat
7
4 - Control cable
(*)
5 - Cooling/heating change-over contact
6 - Cooling/heating change-over control
7 - Air handler
Electrical cables
(if applicable)
Condensate
pipe
Insulation
Purge screw
(not supplied)
(not supplied)
(not supplied)
(not supplied - integrated in MH)
cable
(not supplied)
GB
11
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