Benchmark ACCOLADE 2000, Инструкции по проектированию, установке и обслуживанию

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A
C
C
OL
ADE
2000
1.2 TECHNICAL DATA
a. General technical and performance data of
the Accolade 2000 range is given in table
2.1.
b. The indirect models are fitted with high
performance primary heat exchangers and
are supplied with either Grundfos UPS 15-50
or UPS 15-60 factory fitted pumps. The net
pump head available when hot water only
is on and when space heating only is on is
shown in figures 1.6 and 1.7 respectively.
The control characteristic of the automatic
bypass is shown in figure 1.8.
c. In these appliances the mains inlet pressure
regulating valve is set to 1.5 bar and this
setting MUST NOT be adjusted. Therefore
the flow rate from the appliance depends
upon the resistance of the hot water supply
network, capacity of the incoming mains and
the characteristics of the pressure regulating
valve. Typical hot water flow rates for
different pressures are shown in figure 1.9.
Primary heat exchanger (i.e. coil) pressure loss of Accolade 2000 Models
0
1
2
3
4
5
6
0 10 20 30 40 50 60
Primary heat exchanger circuit flow rate (l/min)
P
re
ss
u
re
lo
ss
(m
.W
.G
.)
AC125/AC150 AC180/AC210
Heating circuit pressure loss of Accolade 2000 Models
0
1
2
3
4
5
6
0 10 20 30 40 50 60
Heating circuit flow rate (l/min)
P
re
ss
u
re
lo
ss
(m
.W
.G
)
figure 1.6 Net pump head available - Hot water only on
figure1.7 Net pump head available - Heating only on
figure 1.8 Automatic bypass valve characteristics
figure 1.9 Hot water flow rates from Accolade 2000
1.0 DESIGN