Mitsubishi Electric EHST17D-VM2D Service Manual page 10

No. Part name
A DHW outlet pipe
B Cold water inlet pipe
C Water pipe (Space heating/cooling return connection)
D Water pipe (Space heating/cooling flow connection)
E Water pipe (Flow from heat pump connection)
F Water pipe (Return to heat pump connection)
G Refrigerant pipe (Gas)
H Refrigerant pipe (Liquid)
1 Control and electrical box
2 Main remote controller
3 Plate heat exchanger (Refrigerant - Water)
4 Booster heater 1,2
5 3-way valve
6 Drain cock (Primary circuit)
7 Manometer
8 Pressure relief valve (3 bar)
9 Automatic air vent
10 Expansion vessel (Primary circuit)
11 Flow sensor
12 Strainer valve
13 Water circulation pump 1 (Primary circuit)
14 Pump valve
15 DHW tank
16 Plate heat exchanger (Water - Water)
17 Scale trap
18 Water circulation pump (Sanitary circuit)
19 Immersion heater
20 Temperature and pressure relief valve
21 Pressure relief valve (10 bar) (DHW Tank)
22 Drain cock (DHW tank)
23 Drain cock (Sanitary circuit)
24 Flow water temp. thermistor (THW1)
25 Return water temp. thermistor (THW2)
26 DHW tank upper water temp. thermistor (THW5A)
27 DHW tank lower water temp. thermistor (THW5B)
28 Refrigerant liquid temp. thermistor (TH2)
29 Pressure sensor
30 Drain pan
31 Outdoor unit
32 Drain pipe (Local supply)
33 Back flow prevention device (Local supply)
34 Isolating valve (Local supply)
35 Magnetic filter (Local supply) (Recommended)
36 Strainer (Local supply)
37 Additional PRV (Local supply)
38 Inlet control group *1
39 Filling loop (Ball valves, check valves and flexible hose) *1
40 Potable expansion vessel *1
*1 Supplied with UK model ONLY. Please refer to PAC-WK01UK-E Installation Manual for more information on accessories.
*2 Attachment the part to the position of 3 bar PRV for E*ST20 series. (Refer to the Figure 3,2 and 3,3 on the manual of RG79F364H01(page 8))
*3 Attachment the part to the position of 3 bar PRV for E*ST30 series. (Refer to the Figure 3,2 and 3,3 on the manual of RG79F364H01(page 8))
OCH714A
ERST20C- ERST30C- EHPT17/20X-
VM2D VM2ED *M*D
— —
— —
—
—
—
*2 *3 —
—
— — —
— — —
—
— — —
—
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
<Table 4.2>
10
EHPT20/30X- EHPT20/30X- ERPT17/20X-
*M*ED MED *M*D
— — —
— — —
— — —
—
— — —
— —
— — —
— — —
— — —
— — —
— —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
ERPT20X- ERPT30X- EHPT20X-
MD VM2ED MHEDW
— — —
— — —
— — —
— —
— — —
— —
— —
— —
—
— — —
— — —
—
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —