Hitachi CH-Box Installation Manual page 29

(b) Insulate gas and liquid pipe separately using the accessory insulation material.
In the event that temperature and humidity levels inside the ceiling exceed 30°C (86
humidity 80%, apply additional insulation materials (approximately 10mm (3/8 inch) thickness) to the
surface of the accessory insulation material to avoid condensation.
(c) Perform cold insulation work by insulating and taping the flare connection and reducer connection.
Also insulate all the refrigerant pipes.
Check that there are no gaps between
the CH-Box and the insulation.
Apply by making
Insulation Material
contact to the piping.
(Attached to the CH-Box)
Insulation
(Field-Supplied)
Insulation
(Field-Supplied)
Securely fasten cable clamps
and the vinyl tape (Field-Supplied).
Insulation Work for Gas (High/Low Pressure and Low Pressure)
Pipe of Outdoor Unit Side
Check that there are no gaps between
the CH-Box and the insulation.
Apply by making
contact to the piping.
Insulation Material
(Attached to the CH-Box)
Insulation
(Field-Supplied)
Insulation
(Field-Supplied)
Securely fasten cable clamps
and the vinyl tape (Field-Supplied).
Insulation Work for Liquid Pipe of Outdoor Unit Side
(d) In case there are unused piping connection, ensure
to apply accessory insulation material to the piping
and flare connections without gaps as shown on
the right figure. (For gas and liquid sides)
P5417025-rev.1
Check there are no gaps between insulation materials.
If the gaps are occurs, seal the gap with vinyl tape.
Insulation Material
(Attached to the CH-Box)
Insulation Material
(Attached to the CH-Box)
Insulation Work for Gas Pipe of Indoor Unit Side
Check that there are no gaps between
the CH-Box and the insulation.
Insulation Material
(Attached to the CH-Box)
Insulation
(Accessory (5))
Insulation
(Field-Supplied)
Clamp
(Accessory (7))
Insulation Work for Liquid Pipe of Indoor Unit Side
Insulation
(Accessory (5), (6))
Clamp
(Accessory (7))
o
F)/RH, relative
Insulation
(Accessory (6))
Insulation
(Field-Supplied)
Clamp
(Accessory (7))
Securely fasten.
Securely fasten.
Insulate without gaps.
Securely fasten.
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