Gree HLR8Pd/Na-K Owner's Manual page 10

eries
AC Contactor 1
AC Contactor 2
Wiring of the Thermostat
◆
The proper limit of the thermostat should be selected based on the protection function of the
electric heater.
Firstly, short-circuit the ON/OFF control signal output terminals of AC contactor 1 and AC contactor
2, and then connect them with the thermostat in series. Do not let the temperature of the external
wall of the tank-type electric heater too high (see the diagram below for more details). After that,
apply heat-conducting paste on the sensing probe and then insert it to the sensing hole to sense the
temperature of the external wall of the tank-type electric heater.
Wiring of the Tank-type Electric Tank
◆
The tank-type electric heater with proper power output should be used and the heating pipe should
be installed at the water inlet side of the unit.
Three-phase wiring for the electric heater should be supplied by the user themselves. A new
electric box is recommended to be used. See the diagram below for more details.
When protection function of the thermostat is required, the sensing probe applied with heat-
conducting paste should be inserted into the sensing hole after wiring of the electric heater has been
finished.
1L1 3L2
21
13
NC
NO
14 22
NO NC
2T1 4T26
AC Contactor 1
1L1 3L2
21
13
NO NC
14 22
NO NC
2T1 4T26
AC Contactor 2
No.
Field Installation Diagramof the Electric Heater
(with the thermostat)
5L3
A1
6
7
A2
8
T3
34
35
36
5L3
A1
A2
T3
Thermostat
Neutral Line
Wiring Terminal
7—A1
35—2T1
8—A1
36—2T2
Electric Box
6
X17
7
X18
8
Main Board AP1
Wiring Board
34
35
CN26
CN27
36
XT2
Tank-type Electric Heater
8
Mini Chiller
Sensing probe