Mitsubishi Electric EHST20-Serie Installationshandbuch Seite 12

3
technical information
UK Packaged model system
<example>
Cold
water
19
8
3 10 21
1 2
Outdoor unit
21 10
Model name
Maximum supply pressure to the pressure reducing valve
Operating pressure (Potable side)
Expansion vessel charge setting pressure (Potable side)
Expansion valve setting pressure (Potable side)
Immersion heater specification (Potable side)
* EN60335/Type 3000W single phase 230V 50Hz, length 460mm
** Use only Mitsubishi Electric service parts as a direct replacement.
Domestic hot water tank capacity
Mass of the unit when full
Maximum primary working pressure

DHW
14
15
9
Drain
16
7
6
18
4 5
Cylinder unit
13
17
Flexible hose
(Temporary
connection)
12
Mains water supply
<Figure 3.7>
EHPT20X-VM2HA
<Table 3.7>
15
Drain
11 11
10
Drain
20 10
Heating return
10
Drain
6 bar
3.5 bar
3.5 bar
6.0 bar
3000 W, 230 V
200 L
332 kg
2.5 bar
. Outdoor unit
2. Plate heat exchanger
3. Interconnecting pipe work (WATER)
4. Booster heater
5. Water circulation pump
6. 3-way valve
7. DHW Tank
8. Cold water inlet pipe
9. DHW outlet connection
0. Isolating valve
. Heat emitters
(E.g. Radiator, Floor heating, Fan coil)
12. Filling loop (ball valves, check valves and
flexible hose) supplied with UK model only*
3. Strainer
14. Pressure relief valve (primary circuit)
15. Drain pipe (field supply)
16. T&P valve (factory fitted)
17. Drain cock (primary circuit)
18. Drain cock (DHW tank)
9. Inlet control group supplied with UK model
ONLY*
* Please refer to PAC-WK0UK-E Installation
Manual for more information on accessories.
20. Magnetic filter is recommended. (field supply)
For new pipework — FernOX Boiler Buddy
For existing pipework — FernOX total Filter tF1
21. Strainer (field supply)
Note
• To enable draining of the cylinder unit an iso-
lating valve should be positioned on both the
inlet and outlet pipework. No valve should be
fitted between the expansion valve (item 19)
and the cylinder (safety matter).
• Be sure to install a strainer, on the inlet pipe
work to the cylinder unit.
• Suitable drain pipe work should be attached
to all relief valves in accordance with your
country's regulations.
• When using components made from different
metals or connecting pipes made of different
metals insulate the joints to prevent a corro-
sive reaction taking place which may damage
the pipework.
• Filling loop's flexible hose must be removed
following the filling procedure. Item provided
with unit as loose accessory.