Water Pipe Installation - Mitsubishi Electric QAHV-N560YA-HPB Service Handbook
Hot water heat pump
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Also See for QAHV-N560YA-HPB:
- Installation & operation manual (85 pages) ,
- Data book (46 pages) ,
- Setup manual (62 pages)
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[ II Restrictions ]
[7] Water Pipe Installation
1. Schematic Piping Diagram and Piping System Components
1
Union joints/flange joints
2
Thermometer
3
Water pressure gauge
4
V
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5
Flexible joint
6
Drain pipe
7
Strainer
8
Air vent valve
9
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* Installing a freezing prevention heater
1In cold areas (where the outside temperature drops below freezing), provide a freezing prevention heater at all
local pipes to prevent spontaneous freezing.
2After the heater is installed, check outside temperature +25ºC is ensured at the inlet/outlet pipe joint section
(at outside temperature -25ºC, joint section 0ºC or higher).
3Depending on the local piping material, prevent overheating by selecting a self temperature adjustment type
heater or other method.
Heater installation example
Piping
Piping
Heater
250 mm
HWE1517A
indicates the direction of the water flow.
Heat pump unit
1
6
1
7
Water piping diagram
Required to allow for a replacement of equipment.
Required to check the performance and monitor the operation of the units.
Recommended for checking the operation status.
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Recommended to prevent the noise and vibration from the pump from being transmitted.
Install the drain pipe with a downward inclination of between 1/100 and 1/200. To
prevent drain water from freezing in winter, install the drain pipe as steep an angle as
practically possible and minimize the straight line.
For cold climate installation, take an appropriate measure (e.g., drain heater) to prevent
the drain water from freezing.
Install a strainer near the unit to keep foreign materials from entering the water-side
head exchanger (supplied).
Install air venting valves to the places where air can accumulate.
Automatic air vent valves are effective.
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Heater
Tape
Heat insulator
3
2
8
4
5
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To storage tank
9
T
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From storage tank
2
3
4
5
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Joint section 0ºC
or higher
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