14
English
Piping instal
lation
Piping installation
About the piping work
Water connections must be made in accordance with the Water
Piping and Wiring diagram delivered with the unit, respecting the
water inlet and outlet. If air, moisture or dust gets in the water
circuit, problems may occur. Therefore, always take into account
the following when connecting the water circuit:
• Use clean pipes only.
• Hold the pipe end downwards when removing burrs.
• Cover the pipe end when inserting it through a wall so that no
dust and dirt enter.
• Use a good thread sealant for the sealing of the connections.
• The sealing must be able to withstand the pressures and
temperatures of the system. When using non-brass metallic
piping, make sure to insulate both materials from each other
to prevent galvanic corrosion.
• Because brass is a soft material, use appropriate tooling for
connecting the water circuit. Inappropriate tooling will cause
damage to the pipes.
CAUTION
• Be careful not to deform the unit piping by using excessive
force when connecting the piping. Deformation of the piping
can cause the unit to malfunction.
• Always use two wrenches (spanners) for tightening or
loosening the water connections, and tighten connections
with a torque wrench as specified in the below table. If not,
connections and parts can be damaged and leak.
• The unit is only to be used in a closed water system. If
applications are in open water circuit, it will generate heat
exchangers fouling, corrosion, and leak.
Name
Tightening torque
BSPP1
350~380 kgf•cm
34~37 N•m
Connecting the water pipes
Connecting the water piping typically follows the below procedure:
1
Connect the water piping to the outdoor unit.
2
Connect the water piping to the indoor unit.
3
Connect the recirculation piping.
4
Connect the drain hose to the drain.
5
Fill the water circuit.
6
Fill the DHW tank.
7
Insulate the water piping.
NOTE
• Do not use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
• Connect the shut-off valve (with integrated filter) to the
outdoor unit water inlet, using the thread sealant. At this time,
the filter should be directed downward so that impurities can
be collected.
• Connect the field piping to the shut-off valve.
• Connect the shut-off valve to the outdoor unit water outlet,
using the thread sealant.
Water
Outlet
Shut Off Valve (1) IN (inc. Filter) /
Shut Off Valve (1) OUT
Water
Inlet
NOTE
• About the shut-off valve with integrated filter:
– The installation of the shut-off valve at the water inlet is
mandatory.
– Mind the flow direction of the valve.
Water Charging
Fill water into the outdoor unit by opening the shut-off and drain
valves.
Water outlet
Water inlet
Piping installation
Summary of Contents for AE CXYD Series
Page 29: ......
