Dantherm CPD 75 MKII Service Manual page 34

Mounting and installation instructions,
Fresh air duct On the air inlet side is an opening for connection of a fresh air duct. The opening is
connection covered by a cover which has to be removed before connecting the fresh air duct.
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 under 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 termi-
nal points 7 and 8 on the PCB together with the fresh air damper. The external fan will
then start along with the fresh air damper. Maximum load on points 7 and 8 is 6A.
Maximum quantity The max. quantity of fresh air should not exceed the values mentioned in the table be-
of fresh air low.
Too much fresh air, particularly in winter, could lead to ice formation on the evaporator
and cut-out by the low-pressure pressostat.
Water heating coils The CDP 75 MK II, 125 MK II 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 technical specifications for the water heating coils are given in the table on page
125.
Connection of The control signal for control of the heating coil takes place through the terminals 1
water heating coils 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 re-
moved 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).
Water-cooled To lead away any excess heat from the unit, a water-cooled condenser may be fitted al-
condenser lowing transfer of the excess heat to the pool water instead of the room air.
CDP 75 MK II, 125 MK II and 165 with water-cooled condenser are supplied with cupper
coupling pipes (Ø15 mm). The coupling pipes can be coupled together with PEX pipes
by means of clamping ring fittings in cases where copper pipes are not required.
The technical specifications for the water-cooled condenser are shown in the table on
page 128.
32
CDP 75 MK II
m /h 225
3
continued
CDP 125 MK II
375
CDP 165
540
Continued overleaf