Preventing Foreign Objects From Entering - Heiko JZ100-A1 Installationsanleitung

Precautions for refrigerant piping
„ Do not twist or crush piping.
„ Be sure that no dust is mixed in piping.
„ Bend piping with as wide angle as possible.
„ Keep insulating both gas and liquid piping.
„ Check flare-connected area for gas leakage
7.4. Piping connection method
„ Apply refrigerant oil to the joint and the flange
„ To bend a pipe, give the roundness as possible not to
crush the pipe.
„ When connecting pipe, hold the pipe centre to centre
and then screw nut on by hand, refer to Fig.
„ Be careful not to let foreign matters, such as sands
enter the pipe
Spanner
Spanner
Pipe diameter
Liquid pipe Φ 6.35mm
Liquid pipe Φ 9.52mm
Gas pipe Φ 12.7mm
Gas pipe Φ 15.88mm
Gas pipe Φ 19.05mm
„ Field pipes can be installed in four directions (A, B, C, D, E).
A: Forward
Joint
Nut
Fastening torque (N.m)
14.2-17.2
32.7-39.9
49.5-60.3
61.8-75.4
97.2-118.6
B: Sideways
C: Backward
D: Downward
E: Power supply cable outdoor and indoor connection cable
„ Cutting out the two slits makes it possible to install as
shown in the figure "Field pipes in 4 directions". (Use
a metal saw to cut out the slits.)
„ To install the connecting pipe to the unit in a
downward direction, make a knock-out hole by
penetrating the centre area around the knock-out
hole using a Ø6 mm drill (4x).
„ After knocking out the knock-out hole, 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-out
holes, remove any burrs from the know-out holes and
wrap the wiring with protective tape to prevent damage.

7.5. 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
1 Putty or insulating material (produced locally)
If there is any possibility that small animals enter the
system through the knock-out holes, plug the holes with
packing materials (field supplied)
Insects or samall animals entering the outdoor unit may
cause a short circuit in teh electrical box.
Seal knock-out holes to avoid snow and humidity entering.
7.6. Preventing foreign objects from entering
„ 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 belo . 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 condensed water on the stop valve can move to
the indoor unit. To avoid this, please cover the stop
valve with sealing material.
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