election Requirements of
45
● When electronic three-way valve is
energized(K), “water outlet 2” opens, “water
outlet 1” closes. When control line is
deenergized, “water outlet 1” opens and “water
outlet 2”closes.
● Actuator must be mounted horizontally upward.
● Do no apply brute force on actuator when
installed.
● Threads connected to actuator must be national
standard pipe thread (G1/1external thread).
● Do not connect actuator with valve body by
using taper thread.
● Installation of valve body and pipeline must
keep clean.
● Valve body and pipeline must be horizontally
mounted.
● Ensure pipeline and valve body are thermally
insulated. Do not wrap actuator into thermal
insulation layer.
11.4 ElectronicThree-way Valve Wiring
11.4.1 Wiring olor
Do not connect three color wires inversely,
otherwise three-way valve coil may be burnt out.
Black:null line (N)
Brown:live line(L)
Blue:control line(k)
11.4.2 Wiring Diagram of Terminal trip in Water
L N3WV
water tank
three-way valve
33-blue
34-brown
35-black
11.5 Troubleshooting
12. Installation of External Water Pump
External Water Pump
Technical requirement for external water pump type
No. Specification Unit
Reference
value
1 Rated voltage V 220-240
2
Max. input
power
W ≤280
3 Max. Current A ≤2
4 Highest lift m ≥6
5 Rated flow M
3
/h ≥1.25
6
Inlet and
outlet caliber
mm 25
7 Noise dB ≤40
No. Abnormality Cause Solution
1
On valve is inversely
connected with Off
valve.
Wiring error
Change
the position of
control line and
live line.
Wiring error. Wire burnout.
2
Actuator does not
work.
Water flows into actuator
or motor is damaged.
Check p
ower supply
and circuit of
actuator.
Connecting thread is not
matched.
Replace actuator.
3
Thread connection
cracks.
Installation is not
conforming to specification
or too strong force is
applied.
Replace valve body.
4
Valve is unable to be
opened or closed
fully.
Pipelines are blocked by
impurities or water quality
is too bad
Clean impurities or
install pre-filter.
12.3 Recommended Type of External
Water Pump
No. Manufacturer Type
2
Grundfos
UPS-25-125
3
Wilo
RS25/8 RS25/6
12.2 Type
S
C
S
When the water module is installed, if water side flow
is lower than 1.20m
3
/h due to too long connecting
water pipe and large resistance at water side, an
external water pump should be added in external
pipeline system. The start/off control of external
water pump will be synchronous with that of built-in
water pump.
L N3WV
cooling fan coil
three-way valve
41-blue
42-brown
43-black
12.1 Installation Location
Install external water pump at water outlet pipe of
water module, in front of floor heating, fan coil or
water tank. If linked to floor heating, fan coil and
water tank at same time, the external water pump
should be installed in front of electric three-way
valve, seen below:
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