ERHQ011~W1 + ERLQ011~W1
Outdoor unit for air to water heat pump
4PW54249-1
Installation manual
8
R
EFRIGERANT
PIPING
■
Field pipes can be installed in four directions.
Figure - Field pipes in four directions
■
Cutting out the two slits makes it possible to install as shown in
the figure "Field pipes in four directions".
(Use a metal saw to cut out the slits.)
■
To install the connecting pipe to the unit in a downward direction,
make a knockout hole by penetrating the centre area around the
knockout hole using a
Ø
6 mm drill. (See figure "Field pipes in
■
After knocking out the knock-out, it is recommended to apply
repair paint to the edge and the surrounding end surfaces to
prevent rusting.
■
When passing electrical wiring through the knock holes, remove
any burrs from the knock holes and wrap the wiring with
protective tape to prevent damage.
■
If there is any possibility that small animals enter the system
through the knock holes, plug the holes with packing materials
(to be prepared on-site).
Preventing foreign objects from entering
Plug the pipe through-holes with putty or insulating material
(procured locally) to stop up all gaps, as shown in the figure.
Insects or small animals entering the outdoor unit may cause a short
circuit in the electrical box.
Precautions when connecting field piping and regarding
insulation
■
Be careful not to let the indoor and outdoor piping come into
contact with the compressor terminal cover.
If the liquid-side piping insulation might come into contact with it,
adjust the height as shown in the figure below. Also, make sure
the field piping does not touch the bolts or outer panels of the
compressor.
■
When the outdoor unit is installed above the indoor unit the
following can occur:
The condensated water on the stop valve can move to the
indoor unit. To avoid this, please cover the stop valve with
sealing material.
■
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, then the thickness of the sealing materials should
be at least 20 mm in order to avoid condensation on the surface
of the sealing.
■
Be sure to insulate the liquid and gas-side field piping.
(The highest temperature that the gas-side piping can reach is
around 120°C, so be sure to use insulating material which is
very resistant.)
1
Drill
2
Centre area around knockout hole
3
Knockout hole
4
Slit
5
Connecting pipe
6
Bottom frame
7
Front plate
8
Pipe outlet plate
9
Screw front plate
10
Pipe outlet plate screw
A
Forward
B
Backward
C
Sideways
D
Downward
1
Knockout hole
2
Burr
3
Packing materials
4
4
3
2
1
7
8
9
10
A
D
C
B
5
6
2
3
1
Any exposed piping may cause condensation or burns
if touched.
1
1
Putty or insulating material
(produced locally)
2
1
3
5
5
A
4
4
6
1
Compressor
2
Terminal cover
3
Indoor and
outdoor field
piping
4
Corking, etc.
5
Insulation
material
6
Bolts
A
Be careful with
pipe, bolt and
outer panel
connections
Summary of Contents for ERLQ011BAV3
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