Mitsubishi Electric Y Series Manual page 73

High energy efficiency
High EER and COP compared to conventional models
• Comparison of single module P300 units
PQHY-P300YLM-A1
PQHY-P300YHM-A
21
%
UP
5.54
4.55
EER
Water flow rate control
System energy consumption can be improved by changing the water
flow volume during partial load and thereby reducing water pump
consumption.
• Control of water flow rate
Control output voltage (0-10V) to adjust valve
opening [0V: Full open,10V: Closed]
Voltage at 0 volt: Even when power is down, water will
continue to circulate.
*When using "water flow rate control," the pump needs to be controlled
by inverter.
*Pump interlock is required.
Power-save function
In previous models (A type), the pump was operated at a constant flow rate during standby and Thermo-OFF.
In the A1 type models, the water control valve is closed during standby and Thermo-OFF to reduce the circulating water flow rate
and reduce the power consumption of the pump.
Standard
Remote controller ON
Heat source unit
Stopped Standby
operation status
Valve opening
Water flow rate
min
0
30
%
UP
6.00
4.60
COP
PQHY-P Y(S)LM-A1, PQRY-P Y(S)LM-A1
Thermo-ON Thermo-OFF Thermo-ON
Time
Time
• Comparison of combination module P600 units
PQHY-P600YSLM-A1
PQHY-P600YSHM-A
20
%
UP
5.37
4.45
EER
Command to adjust valve opening
Inverter pump
* [0V: Closed] and [10V: Full
open] can be set by changing
Inverter pump, valve, control board: locally procured
the dip switch setting.
Power-save settings for the pump
Remote controller ON
Heat source unit
Stopped Standby
operation status
Valve opening
Water flow rate
min
0
The valve closes and stops the water flow during standby and
Thermo-OFF to reduce the energy consumption of the pump.
YLM-Series (WY/WR2)
34
%
UP
6.00
4.46
COP
DC 0-10V
0V: Full open *
10V: Close
Valve
Control board
Thermo-ON Thermo-OFF Thermo-ON
Time
Time
73