- 8-
All outdoor pipes must be thermally insulated with at least 19 mm thick pipe insulation. The
insulation must also be vapor resistant.
The water circulation pump must at all times be operational (even if AH9/11/16 is not running)
to prevent any possible damage due to freezing. Even when in standby mode, the circulation
pump is controlled directly from the AH9/11/16, which takes the outdoor temperature and
temperature in pipe into consideration to decide whether to circulate water within the system.
Shut-off valves and drain valves are fitted so that AH9/11/16 can be emptied in the event of
prolonged power failures.
The supplied flexible hoses act as vibration dampers. The flexible hoses are fitted so a slight
bend is created, thus acting as vibration dampening.
Important:
Even though the AH9/11/16 has anti-freeze protection, if the circulation pump
fails or there is a problem with the power supply, there is still a risk of damage due to freezing.
During
the
installation
Anti-freeze
(Ethylene
Glycol)
is
strongly
recommended. If the air temp is ever lower than 0c, it must use enough
glycol.
3.4 Electrical Connection
Electrical installation and service must be carried out under the supervision of a qualified
electrician. Electrical installation and wiring must be carried out in accordance with the
stipulations in force.
Wiring Diagram 1 phase
WHT White
YLW Yellow
GRY Grey
Blanco
Amarillo
Gris
ORG Orange
RED Red
Naranja
Rojo
BRN Brown
GRN Green
Marron
Verde
PUR Purple
PIN
Pink
Rosa
Purpura
Wires
BLU Blue
BLK
Black
Azul
Negro
W
HT
W
HT
B
L
U
BRN
BLU
RE
D
BL
K
BL
U
YL
W
YL
W
RED
BLU
GRN
WHT
BLU
YLW
YLW
BL
U
BRN
RED
BRN
RED
Temp switch
High pressure switch
Low pressure switch
(1) (2) (3)
(4)
Relay
Relay
(5)
(6)
(7)
(8)
(9)
ELECTRICAL DIRGRAM
YLW
GRN
RED
WHT
WHT
BLK
YLW
BL
U
POW
E
R
SUPPLY
23
0
V
/1
/50H
z
YLW/GRN
H
ea
ter
YLW/GRN
M
AX:
20
A
H
ea
ter
YLW/GRN
M
AX:
20
A
YLW
B
L
U
YLW/GRN
BRN
P
UM
P
BLU
BLU
GRY
YLW
GRY
RED
BRN
BR
N
BLU
BLU
BLU
B
L
K
B
L
K
BLK
BLK
RED
ORG
G1L
G1N
(10)
(11)
(12)
M
3WV
BLU
BRN
BLK
