Kitano KC-Montaro II-60 [49/68] Operation and installation manual

Operation and Installation manual

Table 7.3.5.

7.3.5. Insulation work

Insulation material should adopt the material which is able to endure the pipe’s

temperature (no less than 120°С).

See the table 7.3.5. for insulation material thickness.

Pipe diameter, mm Insula on thickness, mm

Refrigerant pipe

Φ6.4—Φ25.4 10

Φ28.6—Φ38.1 15

Drainage pipe Inner diameter Φ20—Φ32 6

Work procedure:

1) Before laying the pipes, the non-jointing parts and non-connection parts should

be heat insulated.

2) For construction convenience, before laying pipes, use insulation material to

insulate the pipes to be deal with, at the same time, at two ends of the pipe, remain

some length not to be insulated, in order to be welded and check the leakage after

laying the pipes.

3) When the gas proof test is eligible, the jointing area, expanding area and the

flange area should be heat insulated.

4) Make sure there is no clearance in the joining part of the accessorial insulation

material and local preparative insulation material.

7.3.6. Water drainage

Keep the drainpipe sloping downwards at a gradient of at least 1/100. Keep the

drainpipe as short as possible and eliminate the air bubble.

The horizontal drain pipe should be short. When the pipe is too long, a prop stand

must be installed to keep the gradient of 1/100 and prevent bending.

Build-in drain pump with head increases lift of 750mm.

For four-way cassette units (compact):

< 200mm

< 700mm

Fig. 7.3.6.(а)