HWD
8
English 07/13
1-2
Humidifier output (A4 optional
3-4
Internal fan (EV1)
5-6-7-8
Board power supply
9-10
Main coil temperature control sensor (BT2)
11-12
Condensate pump alarm input (F1)
13-14
Air intake assembly control sensor (BT1)
15-16
0-10V output for electric heater or hot water coil modu-
lating valve (optional SA2)
17-24
Remote control receiver input (A5)
25-26
External unit defrosting indicator input l (F2)
27-28
External unit shut down alarm (F3)
29-30
Cooling output (RL1)
31-32
Heating output (RL2)
33-34
Air purifier output (A3 optional)
35-36
Auxiliary coil temperature control sensor (BT3)
37-38
Output (0-10 V) for main water coil modulating valve (SA3)
39-40
Humidifier alarm input (F4)
1
ON
2 3 4 5 6
ELECTRICAL SWITCHBOARD LAYOUT HWD
1
Auxiliary coil present (ON present)
2
Configuration output SA2-SA3 (valve or electric heater kit, OFF propor-
tional 0-10 V, ON on/off)
3
Fan calibration (ON active)
4
Test mode (ON active)
5
For HWDE, always OFF
6
Cooling only or cooling and heating selector)
(ON cooling and heating)
To access the power supply board, remove the switchboard cover. This operation should be performed only with the main
switch in the OFF position.
DIP-SWITCH
PRELIMINARY CHECKS
To run functions 1, 2, 3, 4, 5, and 6 (if present), the corresponding DIP-SWITCH must be selected on the board.
HYDRAULIC CONNECTIONS
To connect the unit, bring the power cable to the electrical
switchboard inside the unit and connect it to the phase (L),
neutral (N) and earth (PE) terminals, including a suitable
main switch with automatic disconnector and residual cur-
rent protection between the power line and the unit.
AUXILIARY CONNECTIONS
All the terminals referred to in the following explanations
are to be found on the terminal board located on the elec-
tronic board.
J2
433
TH1
DIS1
RL1
C1
R2
10
9
8
7
6
5
R3
R4
R1
C2
FU1
J1
12
RP1
RP1
RP2
RP3
RP4
RP4
RP3
RP2
J3
J4
DL9739.0 LC
D1
230-1Ph-50Hz
U
N
2
1
Radio inter-
ference
suppresser
Terminal board
Unit control
board
Cable grip
