Hydraulic Resistances; Residual Head Of Pumps; Setting Values For Heating Capacity - Bosch GC7000WP 50 23 Installation And Maintenance Instructions Manual

15.4

Hydraulic resistances

Unité GC7000
WP 50
Required l/h
volumetric flow
rate at T = 20 K
Max. volumetric l/h
flow rate
Resistance of mbar
boiler
Table 27 Hydraulic resistances
15.5

Residual head of pumps

Changing the pump output
The standard setting for the pump output is sufficient under normal
conditions or with the heating circuit distributor. With a measured T of
more than 20 K an adjustment of the pump output is desirable.
▶ Increase the pump output until T is 20 K ( § 9.4, 26).
-or-
▶ Reduce the installation resistance by installing a low loss header.
800
1
700
600
2
500
400
300
200
3
100
0
0 500 1000 1500 2000
Fig. 49 Residual head of pump GC7000WP 100
Legend next to pump graphics:
[1] Maximum adjustable discharge head of pump
[2] Standard setting of discharge head
[3] Minimum pump discharge head
[4] Resistance of heat exchanger + connection + non-return valve
[5] Resistance of heat exchanger + connection set
[6] Resistance of heat exchanger
800
1
700
600
500
2
400
300
200
3
100
0
0 500 1000 1500 2000
Fig. 50 Residual head of pump GC7000WP 85
Condens 7000 WP – 6721841195 (2022/01)
GC7000 GC7000 GC7000
WP 65 WP 85 WP 100
2200 3000 3600 4300
5000
75 130 170
4
5
6
2500 3000 3500 4000 4500 5000
[l/h]
0010039392-001
4
5
6
2500 3000 3500 4000 4500 5000
[l/h]
0010039391-001
800
700
600
500
2
400
300
200
3
100
240
0
0 500
Fig. 51 Residual head of pump GC7000WP 65
800
700
600
500
400
2
300
200
3
100
0
0 500
Fig. 52 Residual head of pump GC7000WP 50
15.6

Setting values for heating capacity

Power Display
GC7000WP
50
[kW] [%]
13 28
20 40
25 50
30 60
35 70
40 80
45 90
50 100
55
60
65
70
75
80
85
90
95
100
Table 28 Setting values for heating capacity
Technical information and reports
1
1000 1500 2000 2500 3000 3500
[l/h]
1
1000 1500 2000 2500 3000 3500
[l/h]
Display Display
GC7000WP GC7000WP
65 85
[%] [%]
20 --
28 24
36 29
43 35
50 41
57 47
64 53
71 59
-- 79 65
-- 86 71
-- 93 76
-- 100 82
-- -- 88
-- -- 94
-- -- 100
-- -- --
-- -- --
-- -- --
4
5
6
4000 4500 5000
0010039390-001
4
5
6
4000 4500 5000
0010039389-001
Display
GC7000WP
100
[%]
--
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
49