Connecting The Refrigerant Piping; Using The Stop Valve And Service Port - Daikin SEHVX20BAW Installation And Operation Manual

5 Installation
NOTICE
▪ When the installation height of the unit needs to be
increased, do NOT use stands to only support the
corners.
▪ Stands under the unit must be at least 100 mm wide.
▪ The unit must be mounted against the wall.
▪ The unit must be fixed to prevent it from tilting.
▪ The preferred installation is on a solid longitudinal foundation
(steel beam frame or concrete).
▪ Observe the minimum installation space requirements.
200 766.5
▪ Fasten the unit in place using four foundation bolts M12. It is best
to screw in the foundation bolts until their length remains 20 mm
above the foundation surface.
▪ Fasten the unit to the floor using the holes in the bottom beams.
▪ Fasten the unit to the wall using the 2 accessory L-shaped
supports to prevent it from falling over. The supports can be fixed
to the top panel of the indoor unit (2× M5 screws on either side,
but one screw is already mounted on the right side of the top
plate).
a
a Attach one L-shaped support to the left side of the top plate
using 2 screws from the accessory bag
b Attach the other L-shaped support to the right side of the
top plate using 1 screw from the accessory bag and
1 screw that is already attached to the unit
Installation and operation manual
12
5.4
5.4.1
To handle the stop valve
Take the following guidelines into account:
▪ The stop valves are factory closed.
▪ The following illustrations show each part required in handling the
valve.
a
b
500
(mm)
e
▪ Keep both stop valves open during operation.
▪ Do NOT apply excessive force to the stop valve. Doing so may
break the valve body.
To open/close the stop valve
1 Remove the stop valve cover.
2 Insert a hexagon wrench (liquid side: 4 mm, gas side: 8 mm)
into the stop valve and turn the stop valve:
3 When the stop valve CANNOT be turned any further, stop
turning. The valve is now open/closed.
INFORMATION
▪ The SERHQ020 supports Ø22.2 field piping on the
b
▪ The SERHQ032 supports Ø28.6 field piping on the
To handle the service port
Location of service ports
For the service port location, refer to the "Caution" label attached on
the front panel of the outdoor unit.

Connecting the refrigerant piping

Using the stop valve and service port

c
d
a Service port and service port cover
b Stop valve
c Field piping connection
d Stop valve cover
a b
d c
a Service port
b Stop valve cover
c Hexagon hole
d Shaft
e Seal
Counterclockwise to open.
Clockwise to close.
accessory pipe supplied with the unit.
accessory pipe supplied with the unit.
SERHQ020~032BAW1 + SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508019-1C – 2018.04