Water Flow Rate; Technical Specifications - REMEHA Calenta 25s Installation And Service Manual

Calenta 25s - 28c - 35s - 40c
800
700
606
600
530
500
418
400
300
291
200
100
0
0 250 500 750
700
600
∆T = 20K
500
400
25 kW
300
20 kW
200
15 kW
100
10 kW
0
0 500 1000
437 623 830 1037
600
500
∆T = 20K
400
300
30 kW
200
25 kW
20 kW
100
0
0 500 1000
835 1043 1252 1465
3.4

Technical specifications

040412 - 7600585-01
20 kW
25 kW
30 kW
35 kW
1000 1250 1465
Q (l/h)
835 1038 1252
T001748-B
1500 2000 2500
Q [l/h]
T001978-A
35 kW
1500 2000 2500
Q [l/h]
T001749-B
Calenta 35s - 40c
Manometric height central heating circuit
H
Water flow
Q
Parameters p"8 and p"9 are used to modify the pump settings:
4 If there are audible flowing noises in the system, the maximum
pump speed must be lowered using parameter p"9 (First of all,
vent the heating system).
4 If there is insufficient flow in the radiators or if they do not warm
up completely, the minimum pump speed can be increased using
parameter p"8.
¼ See chapter: "Modification of the installer-level parameters",
page 67.
3.3.11.

Water flow rate

The boiler's modulating control system limits the maximum difference
in temperature between the heating flow and return and the maximum
speed at which the flow temperature increases. In this way, the boiler
does not require a minimum water flow rate.
¼ If using thermostatic valves, see chapter: "Hydraulic
connections", page 29.
Calenta 25s
Pressure drop
Δp
Water flow (max = 1680 l/h)
Q
Calenta 35s
Pressure drop
Δp
Water flow (max = 2460 l/h)
Q
3. Technical description
17