Your Heating System; System Configuration; Important Parts Of The Units - Points To Note - Mitsubishi Electric EHST20 Series Operation Manual

3

Your Heating System

System Configuration

Model name
Cylinder unit
Outdoor heat pump unit
Model name
Hydrobox
Outdoor heat pump unit

Important Parts of the Units - Points to Note

< Hydrobox >
EHSC (Split model system)
Main controller
Manometer
(Pressure gauge)
Heat pump
Space heating/ Space heating/
connection
Indirect DHW Indirect DHW
cylinder (primary)
cylinder
return
(primary) flow
connection
connection
Discharge pipe
from pressure
relief valve
View of base
5
Packaged model system
EHPT20X-
Plate heat exchanger
Interconnecting
Indoor cylinder unit
water pipes
EHPX-
Plate heat exchanger
Interconnecting
Indoor hydrobox
water pipes
EHPX (Package model system)
Space heating/ Space heating/
Heat pump
Indirect DHW
Indirect DHW cylinder (primary)
connection
cylinder (primary)
flow connection
return
connection
View of base
Outdoor heat pump unit
Outdoor heat pump unit
< Cylinder unit >
Solar (ancillary
heat source)
connection
Space heating
return connection
Heat pump
Main controller
connection
Manometer
(Pressure gauge)
Discharge pipe
from pressure
relief valve
Split model system
EHST20C-
Plate heat exchanger
Interconnecting
Indoor cylinder unit
refrigerant pipes
EHSC-
Plate heat exchanger
Interconnecting Indoor hydrobox
refrigerant pipes
Cold water inlet connection
DHW outlet connection
Space heating flow
connection
Pressure relief valve
Automatic air vent
Manometer
(Pressure gauge)
Plan view
Main controller
Temperature and
pressure relief valve
*EHPT20X-VM2HA
ONLY
Front elevation