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Installation Procedure
Step 14 Performing the test operation
1 Before turning on the product, measure resistances
between the power terminals (single phase: L, N)
and the earthing of the fan coil unit using a DC 500V
insulation resistance meter.
• The measured values must be at least 30 MΩ.
CAUTION
• Never measure resistance for the communication
terminal. Failure to do so may damage the
communication circuit.
• Use a general circuit tester to check the
communication terminal for short circuit.
2 Before turning on the product, check the voltage of
the power source (L, N).
220 to 240V
3 After completing the installation, check the following
to ensure that the fan coil unit operates normally:
• S trength of the installation site
• Water leakage
• P ower and electric wiring connections
• Heat-resistant insulation of the pipes
• Drainage
• Connections to the auxiliary circuit breaker,
earthing status
• Normal operation in each operation mode
4 After finishing the test run, refer to the user manual
and explain the following to the customer:
• Starting and stopping the fan coil unit
• Using the operation modes and the functions
• Cleaning the fan coil unit and replacing the filter
CAUTION
• For the test run, be sure to operate each fan coil unit
separately to secure S-NET data.
• After installation, test run, and delivery, tell the user
to store the user manual and this installation manual
in a safe place.
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English
DB68-11289A-01_IM_DVM FCU WindFree 4way_EU_EN_.indb 40
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CAUTION
Operating precautions
• Be sure to operate heat sources (chiller, boiler) after
starting the fan coil unit.
• Be sure to stop the fan coil unit after stopping heat
sources (chiller, boiler).
• When heat sources (chiller, boiler) are not used for
more than 4 hours in Cool mode, stop the water
circulation.
• If the water circulation cannot be stopped, operate
the fan at low speed.
− If cold water flows while the fan of the fan coil unit
is stopped, condensation may develop on the fan
coil unit (main unit, motor, grill, etc.), shortening
the product life.
• Do not use the product in hot and humid places
(relative humidity 80% or more).
− Water falling from the product may cause fire or
property damage.
• In winter, operate the water pump continuously for
water circulation.
• When a season ends or when the product is not used
for a long time, completely drain water from the
entire system.
− Failure to do so may cause the pipes to freeze and
burst, leading to property damage.
2022-04-26 오전 8:55:25
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