Outlines And Dimensions; Service Access Diagrams - Mitsubishi Electric EHST20C-VM6HB Service Manual

5

OUTLINES AND DIMENSIONS

5-1. Technical Drawings
680
<Left side>
C
0
63.3
67.8
123
D
E
G / J
449.7
491.1
509.7
561.7
H / K
<Top>

5-2. Service access diagrams

Service access
Parameter
a
b
c (distance behind unit not visible
in the right figure)
d
Sufficient space MUST be left for the provision of discharge pipework as detailed
in National and Local Building Regulations.
The cylinder unit must be located indoors and in a frost-free environment, for
example in a utility room, to minimise heat loss from stored water.
OCH531
Letter Pipe description
A DHW outlet connection
Cold water inlet connection
B
C/D Solar (ancillary heat source) connections  mm/Compression
A
Space heating return connection
E
F Space heating flow connection
B
Flow from heat pump connection
G
(No plate heat exchanger)
F
Return to heat pump connection
H
(No plate heat exchanger)
Refrigerant (GAS)
J
(With plate heat exchanger)
Refrigerant (LIQUID)
L
K
(With plate heat exchanger)
Electrical cable inlets
L
Dimension (mm)
00
150
10
500
595
Main controller
Temperature and
pressure relief valve
and its access plate
(EHPT0X-VMHB)only)
Terminal block
Front panel
<Front>
Connection size/type
 mm/Compression
 mm/Compression
8 mm/Compression
8 mm/Compression
8 mm/Compression
8 mm/Compression
15.88 mm/Flare
9.52 mm/Flare
—
For inlets
external input wires and thermistor wires. For inlets
, and
indoor-outdoor cable, and external output wires.
*For a wireless receiver (option) cable, use inlet
b
10
<Unit: mm>
Air vent
Pressure relief valve
G1/2
50
156
<Right side>
, run low-voltage wires including
and
, run high-voltage wires including power cable,
a
b
d
Service access
,
.