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3.0 TECHNICAL SPECIFICATION
Figure 3.3 Characteristics of the automatic bypass valve
1,0
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0
Figure 3.4 Performance range of Grundfos UPS 15-50 pump
6
5
4
3
2
1
0
0
0.5
1
Figure 3.5 Performance range of Grundfos UPS 15-60 pump
6
5
4
3
2
1
0
0
0.5
1
Figure 3.6 Hot water performance of mCHP BoilerMate
60
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55
50
45
40
35
30
0
20
40
60
Supplied By www.heating spares.co Tel. 0161 620 6677
Kvs
2,43
2,56
2,85
3,24
3,81
Q (l/h)
1.5
2
2.5
3
Flow rate (m
3
/h)
1.5
2
2.5
3
Flow rate (m
3
/h)
80
100
120
140
160
Draw-off volume (litres)
3.2 BYPASS VALVE
PERFORMANCE
-0,5-
The 'R' models are fitted with an automatic
bypass valve and the performance characteristics
are shown in figure 3.3 The bypass valve must
be adjusted onsite to give the temperature
-0,1-
rise across the mCHP unit specified by the
manufacturer.
3.3
PUMP PERFORMANCE
The performance of Grundfos UPS 15-50 and UPS
15-60 pumps fitted in the appliances are shown
in figures 3.4 and 3.5 respectively.The maximum
performance of the modulating pumps (UPR
range) is the same as the UPS range set at speed
3. As these pumps modulate their performance
characteristics change downwards the same
as setting lower speeds for non-modulating
standard pumps.
The resistance of the 3-port flow share valve,and
the mCHP unit should be taken into account
3.5
4
when sizing the pipework for central heating
and boiler circuits.
3.4
HOT WATER
PERFORMANCE
Although the mCHP BoilerMate
at mains inlet pressure as low as 1 bar and as
high as 5 bar; the preferred range is 2 – 3 bar
dynamic.
Typical hot water performance of the appliance is
shown in figure 3.6.The performance comparison
is shown for continuous hot water draw-off at 18
3.5
4
l/min when the store is charged to nominal 77
and the cold water inlet temperature is 10
during the draw-off it is assumed that there is no
heat input from the mCHP unit.
180
200
Page 16
A-CLASS
will operate
o
C
o
C.Also
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