Terminal Blocks - Carrier ETN Installation Instructions Manual

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.
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NON-PROGRAMMABLE THERMOSTAT
MODELS « 38XTZ + 40ABZ 016-024 »
THERMOSTAT TERMINALS
Y 1 G Y 2 S S W 2 E
S E E
NOTE
Y 2
Y 1 G 7 1
UNIT ELECTRICAL BOX TERMINALS
(Cooling only Models)
MICROS BLOCK S1
1-3-4-5-6
Micro No. 2 Micro No.
O F F
Position O N Position
E W 1 O C R
NOTE
Before connecting the
alarms, read pages 34 and
7 2 C R
35 of this manual.
*
( ).- Set Micro no 5 on
Block S2 to ON when the
Unit starts up the Hot Water
Coil.
MICROS BLOCK S2 (*)
2 - 4 - 5
1 - 3 - 6
O F F
O N
REF.- ETN.15
10-06-05
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