Mitsubishi Electric PAC-IF012B, Техническое руководство

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• The water velocity in pipes should be kept within certain limits of material to avoid erosion, corrosion and excessive
noise generation.
Be aware, and take care of , that local velocities in small pipes, bends and similar obstructions can exceed the values
of previous page.
e.g.) Copper : 1.5 m/s
Warning
• Use clean enough water which meets water quality standards. The deterioration of water quality may result in the sys-
tem breakdown or the water leakage.
• Never use anything other than water as a medium. It may cause a fi re or an explosion.
• Do not use heated or cooled water that is produced by the air to water heat pump directly for drinking or cooking.
There is a risk to damage your health. There is also a risk that installing the water heat exchanger may corrode if the
necessary water quality for air to water heat pump system cannot be maintained. If you wish to use the heated or
cooled water from the heated pump for these purposes, take measure such as to the second heat exchanger within
the water piping system.
Reference data
Required speci fi cation and performance of Plate Heat Exchanger.
Required speci fi cation
Refrigerant side
Refrigerant type R410A
Normal (designed) pressure 4.15MPa
Operating temperature -20~100
:
Water side
Refrigerant type Clean water
Normal (designed) pressure 1.5MPa
Operating temperature -20~90
:
(No freezing)
Burst pressure 12.45MPa (4.15MPa ×3) or more
Frozen performance Satisfy an initial performance since 5 times or more of deep freezing.
Heat cycle 70,000 times or more…Temperature difference: about 50K
Endurance pressure 72,000 times or more…Pressure difference: 3.3MPa (0 ↔ 3.3MPa)
Required performance
< For 2.5~3 HP >
Required performance of Plate Heat Exchanger kW 9.0 9.0
Refrigerant side
(R410A)
Inlet temperature degC 75 100 Gas pipe:
[
12.7 mm
Condensing temperature degC 39.5 63.5 Liquid pipe:
[
9.52 mm
Subcool degC 2 2
Max. pressure loss kPa 50 50
Water side
Inlet temperature degC 30 55 Inlet / outlet pipe:
[
28.6 mm
Outlet temperature degC 35 60
Water fl ow volume L/min 25.8 25.8
Max. pressure loss kPa 50 50
* For heating mode, used at counter fl ow direction between refrigerant fl ow and water one.
< For 4~6 HP >
Required performance of Plate Heat Exchanger kW 14.0 14.0
Refrigerant side
(R410A)
Inlet temperature degC 75 100 Gas pipe:
[
15.88 mm
Condensing temperature degC 39.5 63.5 Liquid pipe:
[
9.52 mm
Subcool degC 2 2
Max. pressure loss kPa 50 50
Water side
Inlet temperature degC 30 55 Inlet / outlet pipe: over
[
28.6 mm
Outlet temperature degC 35 60
Water fl ow volume L/min 40.1 40.1
Max. pressure loss kPa 50 50
* For heating mode, used at counter fl ow direction between refrigerant fl ow and water one.