Ambient ASHP-23 - Page 23

Page 23 of 38
External control box
(do not apply any external voltage to these digital input
terminals)
Diagram/Photo Copyright AusGeothermal 2018
External Main Power Isolator
Single Phase Unit Three Phase Unit
E
A
R
T
H
N
E
U
T
R
A
L
A
C
T
I
V
E
1
R
E
M
O
T
E
O
N
/
O
F
F
2
R
E
M
O
T
E
C
O
O
L
C
A
L
L
3
R
E
M
O
T
E
H
E
A
T
C
A
L
L
4
W
A
T
E
R
F
L
O
W
S
W
I
T
C
H
G
N
D
7
B
U
F
F
E
R
T
A
N
K
T
E
M
P
6
D
H
W
T
E
M
P
P
R
O
B
E
5
D
H
W
B
O
O
S
T
WIRE TO SINGLE
PHASE
240VAC
50Hz
40AMP SWITCH
BOARD CIRCIT
BREAKER
8
O
U
T
S
I
D
E
A
I
R
T
E
M
P
9
G
N
D
1
0
24
V
D
C
1
1
24
V
C
O
M
E
A
R
T
H
N
E
U
T
R
A
L
A
C
T
I
V
E
L
1
A
C
T
I
V
E
L
2
REMOVE BRIDGE WIRE FOR FLOW SWICH
INSTALLATION
A
C
T
I
V
E
L
3
REMOVE BRIDGE WIRE FOR EXTERNAL TERMOSTAT INSTALATION
(e.g. EXTERNAL TERMOSTAT COMMON TO GND
EXTERNAL THERMOSTAT N/O TO 1)
1 = N/O GND = COM
10 =24VDC THERMOSTAT POWER
11 = 24VCOM THERMOSTAT POWER
THERMOSTAT POWER
WIRE TO 3PHASE
415VAC
50Hz
20AMP SWITCH
BOARD CIRCIT
BREAKER
INSTALL
EXTERNAL
DHW
BOOST
BUTTON IF
REQUIRED