Mitsubishi Electric Y Series Manual page 217

ATW Unit - HEX Unit
PWFY-EP100VM-E1-AU
By utilizing waste heat from the R2/WR2 Series for heating operation in the HEX unit,
hot water can be supplied highly efficiently. Also, when connected with the Y/WY
Series, it provides higher efficiency operation compared to a conventional system.
Connectable to
CITY MULTI
R2/WR2/
Y/WY Series
• System outline of the HEX unit with R2-Series
OUTSIDE
R2 outdoor unit
What makes the HEX unit unique with the R2/WR2 Series?
Hot water supply
HEX unit
1
CITY MULTI
R2/WR2
BC controller
Series
Indoor
unit
Cold water supply
HEX unit
1
CITY MULTI
R2/WR2
BC controller
Series
Indoor
unit
Applications
Floor heating, panel
heater, fan-coil unit
(AHU), etc.
MACHINE ROOM INDOOR
BC controller Indoor unit
Tank
HEX unit
(procured locally)
Hot water
supply
2
Water
supply
Red High pressure gas refrigerant
Orange High pressure 2-phase refrigerant
Green High pressure liquid refrigerant
Blue Low pressure gas refrigerant
Cold water
supply
2
Water
supply
Red High pressure gas refrigerant
Orange High pressure 2-phase refrigerant
Green High pressure liquid refrigerant
Blue Low pressure gas refrigerant
Operation
Hot water up to 40°C
Cold water down to 8°C*
The HEX unit is connected to BC controller
with refrigerant pipes and to the water tank
with water pipes. It is not equipped with a
compressor.
Red High pressure gas refrigerant
Orange High pressure 2-phase refrigerant
Green High pressure liquid refrigerant
Blue Low pressure gas refrigerant
Fan coil
*The image shows a system example for the heating mode.
Floor heating
Panel heater
*The necessity of the tank depends on the system configuration.
Refrigerant flow
From the BC controller, high pressure R410A gas
1
refrigerant is delivered to the HEX unit and returns to
the unit as high pressure liquid refrigerant.
Water supply
Water entering the HEX unit exchanges heat with the
2
R410A refrigerant and circulates to heat the water
inside the tank.
Refrigerant flow
From the BC controller, high pressure R410A liquid
1
refrigerant is delivered to the HEX unit and returns to
the unit as low pressure gas refrigerant.
Water supply
Water entering the HEX unit exchanges heat with the
2
R410A refrigerant and circulates to cool the water
inside the tank.
FEATURES
* 8°C indicates the outlet water
temperature.
To use the 8°C water, set the
inlet water temperature to
10°C on the remote controller.
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