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In a system that includes PWFY-EP100VM-E1-AU, if the operation of the pump is interlocked with the operation of the
air conditioning units AND if the Solenoid valve kit (PAC-SV01PW-E) is connected to the system, connect the wires as
shown in [Fig. IV.3.(10).3]. Set Dip SW3-6 to ON, and make sure that the version of the software is 1.18 or later.
(PWFY-EP100VM-E2-AU do not need a solenoid valve kit because they are built in with the same functions.)
F: Fuze
52P: Magnetic contactor for heat source water pump
MCB: Circuit breaker
WP: Water pump
(11) Anti freeze mode (Dip SW4-4 ON)
Anti freeze mode is to prevent water pipe from freezing.
The Anti freeze mode can set the heating temperature range between 10ºC~45ºC enabling the unit to maintain low water
temperature to prevent water pipes from freezing.
[Fig. IV. 3. (10).3]
Board
PWFY
Solenoid
valve kit
N
L
52P
MCB
WP
TB141A OUT1
AC220V ~ 240V
AC220V ~ 240V
TB1
TB2
DC30V or less
or
F
1
2
3
L
N
L
N
52P