Fresh Air Duct Connection; Connection Of Water Heating Coils - Dantherm CDP 75 Mode D'emploi

If pressure losses are higher there is a danger of the unit cutting out via the high-pressure pressostat due to too little
air passing over the condenser

2.6 Fresh air duct connection

On the air inlet side is an opening for connection of a fresh air duct. The opening is covered by a cover which has
to be removed before connecting the fresh air duct.
The max. quantity of fresh air should not exceed the values mentioned in the table below:
Too much fresh air, particularly in winter, could lead to ice formation on the evaporator and cut-out by the low-
pressure pressostat.
If a fresh air duct is connected, we recommend that a fan is mounted for drawing out the extra air in order to
maintain a comfortable pressure in the room and to avoid moist and chlorine-containing vapours diffusing through
the walls.
An external fan for removal of the extra amount of inlet air may be connected to terminal points 7 and 8 on the
PCB together with the built-in fan. The external fan will then start along with the built-in fan. Maximum load on
points 7 and 8 is 6A.

2.7 Connection of water heating coils

The CDP 75, 125 and 165 can be fitted with water heating coils. The heating coil is designed for installation in the
air outlet duct. The heating coil has duct connection spigots allowing direct fixing to the connections of the units.
The control signal for control of the heating coil takes place through the terminals 1 and 2 and the outlet is 230
V/1A.
The control is prepared for connecting a room thermostat to the terminals 5 and 6. The outlet of the thermostat is 12
V. The bridge between terminal 5 and 6 has to be removed before connecting the thermostat.
If the control signal is used for control of the water heating coil and a connected room thermostat, the water
heating coil will always be cut out when the power to the unit is turned off. When the water heating coil is
connected as described above, it may be connected and disconnected by the push button with the fire symbol .
(See section 4.3 Push button indications).
The technical specifications for the water heating coils are given in the table on page 43.
CDP 75 CDP 125
Pa 170 230
CDP 75 CDP 125
3
m /h 225 375
CDP 165
240
CDP 165
540
15