3
Technical Information
<EHPX> (Packaged model system)
<Figure 3.3>
3.8
3
A
B
<Figure 3.4>
5
4
C
D
Number
Component
Control and electrical box
2
Main controller
3
Manometer
4
Expansion vessel
5
Expansion vessel charge valve
6
Automatic air vent
7
Booster heater
8
Drain cock
9
Water circulation pump
0
Pressure relief valve
Flow switch
3
Strainer valve
Inlet from space heating/Indirect DHW tank (pri-
A
mary return)
B
Inlet from heat pump
C
Outlet to heat pump
Outlet to space heating/Indirect DHW tank (primary
D
flow)
2
Discharge from pressure relief valve (installer to
E
pipe connect to suitable drain point)
3
6
5
7
8
9
0
E
<Table 3.3>