Mitsubishi HMA100V Technical Manual page 294

Dual system - heating and cooling
20S 4-way valve
63H1 High pressure switch
CM Compressor motor
CT Current sensor
EEV-C Expansion valve, cooling
EEV-H Expansion valve, heating
FMo1 Fan motor
LPT Low pressure sensor
Tho-A Temperature sensor, outdoor air
Tho-D Temperature sensor, hot gas
Tho-R1 Temperature sensor, heat exchanger out
Tho-R2 Temperature sensor, heat exchanger in
Tho-S Temperature sensor, suction gas
Function
The heat pump prioritises hot water charging. The compressor
output is adjusted according to the outdoor temperature. The
circulation pump varies the flow to maintain a high charge
temperature.
When the water heater is full, the valves QM30 and QM31
switch to the heating system. The heat pump is then controlled
by a calculated set point value on the flow line. The compressor
varies the output according to the demand. The circulation
pump runs at a fixed set speed.
Extra shunt (EP21-QN11) lowers the temperature on system 2
according to settings in indoor unit.
If the compressor does not manage the entire heat demand, the
electric heater is activated if it is allowed by setting and the
heat shunted out on the flow line.
During cooling the valve QN12 switches to the cooling system.
The heat pump is then controlled by a calculated set point value
on the flow line. The compressor varies the output according to
the demand. The circulation pump runs at a fixed set speed.
Dual system - heating and cooling
BP4 High pressure sensor
BP5 Pressure gauge
BT1 Temperature sensor, outdoor air (external)
BT2 Temperature sensor, supply
BT3 Temperature sensor, heat exch. in (Twin)
BT6 Temperature sensor, tank water
BT12 Temperature sensor, heat exch. out (Twout)
BT15 Temperature sensor, liquid pipe (Thi-L)
BT19 Temperature sensor, immersion heater
BT24 Temperature sensor, external heat source
BT30 Thermostat, standby mode
CM1 Expansion vessel
CP1 Buffer vessel
CW Sanitary cold water inlet
EB1 Immersion heater
EP2 Heat exchanger
FD1 Temperature limiter
FL1 Safety valve, HW
FL2 Safety valve, tank
FQ1 Mixing valve, HW
GP1 Circulation pump, climate system
GP10 Circulation pump, external 1
HQ1 Strainer (water)
HS1 Filter dryer (refrigerant)
HW Sanitary hot water outlet
MH-RG10 Room sensor MH-RG10 (accessory)
QM30 Reversing valve, hot water
QM31 Reversing valve, climate system
QN11 Mixing valve
Heating mode
QM30 Closed
QM31 Open
QN11 Active during balance point (A)
QN12 Open (A)
Hot water mode
QM30 Open
QM31 Closed
QN11 Open (AB)
Cooling mode
QM30 Closed
QM31 Open
QN11 Open (AB)
QN12 Open (B)
Installation requirements
See page 9.
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'10 • HM-T-149A
System description
EP21-BT2 Temperature sensor, supply 2
EP21-BT3 Temperature sensor, return 2
EP21-GP10 Circulation pump, system 2
EP21-QN11 Mixing valve, system 2 3-way ball type 35sec
QN12 Shuttle valve for heating /cooling
0-4.15 MPa
0-4 Bar
(enclosed)
φ11
35-45℃ adjustable
9kW (3-phase)
98℃
2.5 Bar
variable flow
0.8mm2
bi-flow 083
2-way 35sec
2-way 35sec
3-way ball type 35sec
66