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SINCLAIR
5.1.2.2 Construction of Supports, Hangers, and Brackets
(1) Construction of supports, hangers, and brackets for pipes: These parts must be fixed securely in
reasonable type and style without any tilt. The surface is clean without any dirt. The parts embedded
into the wall or floor cannot be painted or coated and must be free from grease stains.
(2) Construction of fixing bolts for devices: Ensure sufficient rigidity for the devices. Take
anticorrosive measures for exposed part of built-in fittings. If the foundation must be waterproof, takes
waterproof measures.
(3) Construction of steel casings: Equip a steel casing for all pipes which are led through the wall or
floor. Pipe welding joints cannot be placed inside the sleeve. The steel casing must be parallel with
the bottom of the wall or floor but be 20 mm or greater above the bottom. The diameter of the steel
casing must be determined based on the thickness of the thermal insulation layer and the inclination
degree of the condensate water pipe. Fill the gap between the pipe and the sleeve with flexible and
non-flammable materials. The sleeve cannot be used as a support point of the pipe.
(4) Operation sequence
Drawing of built-in
metal fittings
If possible, make ink lines on the ground and project them to the top of the building.
(5) Installing built-in metal fittings
Select built-in metal fittings in accordance with local regulations.
(6) Installing expansion bolts
Use expansion bolts when built-in metal fittings are unavailable due to design change.
(7) Installing expansion bolts
● If the foot pedal is 2 m or more from the ground, there must be three points of support.
The foot pedal must be tightened securely with the ladder.
● Do not perform operations on the top of the ladder.
5.1.2.3 Shaping and Fixing of Pipes
When installing refrigerant pipes, ensure that the directions are correct with minimum length and
elbows. Alignment and thermal insulation after installation cannot affect the pipe location and elevation.
There shall not be flat bending or corrugation on the pipe after piping.
Use angle steel support, bracket, round steel hanger, U-type pipe clip, or flat steel to fix pipes
outside the thermal insulation layer. It is better that the thermal insulation materials be not compressed to
ensure good thermal insulation.
The style and workmanship of supports, hangers, and brackets must follow the standard T616
HVAC Systems Design Handbook.
The minimum distance between supports, hangers, and brackets is listed in the table below:
Outside Diameter of the Pipe (mm)
Distance between Horizontal Pipes (mm)
Distance between Vertical Pipes (mm)
The pipe led through a wall or beam must be fixed by a support, hanger, or bracket on both ends at
the position 300 mm away from the hole.
AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
Making ink lines
31
Installing built-in metal
fittings
Φ≤16
40>Φ≥19.05
1000
1500
1500
2000
Φ≥40
2000
2500
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