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DESIGN
Notes:
Item 5a is supplied separately with the appliance (see Figure 1.8 and Table 1.1 below
for details), complete with a fixing bracket and pipework installation kit.
Items 10 and 11 are available as an optional Primary Sealed System Kit at extra cost.
If required, this should be ordered at the same time as the appliance (see Figure 1.7
and Table 1.1 below for details). The expansion vessels are provided with a suitable
fixing bracket.
Item 38 is supplied separately with the appliance package for fitting internally in the
heat pump return as near as possible to the heat pump, fully in accordance with the
manufacturers instructions included later in this manual.
The appliance is available with the option of a factory fitted scale inhibitor, at extra
cost. In this case the aerial is fitted on the 22mm cold inlet and the scale inhibitor PCB
is fitted in the electrical panel/PCB area.
Figure 1.7
Primary system expansion vessel
available as an optional extra at the
time of order as part of the Primary
Sealed System kit
Table 1.1
Model
BMA 180 HP-DEM
BMA 210 HP-DEM
BMA 240 HP-DEM
The size of the primary system expansion vessel has been calculated using typical design
criteria for the maximum recommended heating load shown in Table 1.2. However, the
5a
10
Unvented store expansion vessel
supplied separately with the appliance
Expansion Vessels
Primary Expansion Vessel (Optional Extra)
Capacity (l)
Size (mm) LxWxH
12
500 x 200 x 160
12
500 x 200 x 160
2 x 12
500 x 200 x 160
Figure 1.8
Unvented Store Expansion Vessel (Supplied)
Capacity (l)
12
12
18
size should be checked and confirmed as being
accurate by the system designer/installer.
Page 12
Size-each (mm) LxDiam
270 x 270
270 x 270
400 x 270
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