- 31 -
- 6 -
4.- Electrical connections
Indication of the meaning of the thermostat connections.
TERMINAL BLOCKS
FUNCTION
R
24 Vac
C
0 Vac
E
Alarm (inlet for NA power-free contact
E
Alarm (inlet for NA power-free contact)
O
Reversible valve
W1
Electrical heater
W2
Electrical heater
S
Atmospheric sensor or remote return
S
Atmospheric sensor or remote return
Y2
Compressor 2 (Cold / Heat)
G
Ventilation
Y1
Compressor 1 (Cold / Heat)
¡IMPORTANT! Before making any modification to the Micro-switches,
disconnect any power to the air conditioning unit.
10-06-05
Micro No.
Position
MICROS BLOCK S1
1-3-4-5-6
O F F
2
O N
Micro No.
Position
MICROS BLOCK S2 (*)
2-4-5
O F F
1-3-6
O N
NON-PROGRAMMABLE THERMOSTAT
MODELS « 38XTZ + 40ABZ 016-024 »
THERMOSTAT TERMINALS
UNIT ELECTRICAL BOX TERMINALS
(Cooling only Models)
REF.- ETN.15
Y 1
G
7 2
C
R
Y 1
G
Y 2
S W 2
E
S
E W 1 O
C
R
7 1
(
*
).-
Set
Micro no
5
on
Block
S2
to
ON
when the
Unit starts up the Hot Water
Coil.
Y 2
NOTE
Before connecting the
alarms, read pages
34
and
35
of this manual
.
S E E
NOTE