York YHDJXH012BAM--GX, Service Manual

Page: 78 / 161

The notch upward(Attached detail view)
Indoor unit
Subsidiary insulation tube
Field piping side
Directly stretch the hose to install without making any deformation.
The soft end of the hose must be fastened with a hose clamp.
Please apply the hose on horizontal part Insulation treatment.
Wrap the hose and its clamp up to the indoor unit without any
clearance with insulating material, as shown in the figure.
The insulating material at gas side shall be resistant to a temperature
above 120 C
The indoor unit pipe connection part shall be insulated.
Refrigerant Pipe
Drain Pipe
CAUTION
Installation Procedure
Open all valves
Gas leakage detection
Insulation treatment
Open all the valves on the outdoor unit.
Check with a leakage detector or soap water if there is gas leakage at the pipe connections and bonnets.
Conduct insulation treatment on both the gas side and liquid side of pipes respectively.
During cooling operation, both the liquid and gas sides are cold and thus shall be
insulated so as to avoid dew generation.
In order to drain water normally, the drain pipe shall be processed as specified in the installation manual and shall be thermal
insulated to avoid dew generation. Improper hose connection may cause indoor water leakage.
Requirements
The indoor drain pipe shall be thermal insulated.
The connection part between the drain pipe and
the indoor unit shall be insulated so as to prevent
dew generation.
The drain pipe shall be slant downwards (greater
than 1/100). The middle part shall not be of S type
elbow, otherwise abnormal sound will be produced.
The horizontal length of the drain pipe shall be less than 20 m. In case of
long pipe, supports shall be provided every 1.5 _ 2m to prevent wavy form.
Central piping shall be laid out according to the right figure.
Take care not to apply external force onto the drain pipe connection part.
Pipe and insulation material
Rigid PVC pipe VP20 mm (internal diameter)
Foamed PE with thickness above 7 mm Pipe
Insulation
Hose
Drain pipe size: (3/4") PVC pipe
The hose is used for adjusting the off-center and angle of the rigid PVC pipe.
Drain confirmation
During trial run, check that there is no leakage at the pipe connection part during water draining even in winter.
Wall
Outside
Slant
Drain pipe (supplied
by the user)
VP30
To the largest (app. 10cm)
Down slope above 1/100
S type elbow
1.5m~2m
Support
Insulation (supplied by the user)
Down slope above 1/100
Installation Procedure
Hose Hose clamp
Subsidiary insulation
Insulation
Rigid PVC pipe
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