39
0
20
40
60
80
100
120
10
20
30
40
50
60
Output (kW)
dP (mBar)
0
500
1000
1500
2000
2500
3000
Flow (l/h)
NOTE:
For multiple boiler installations the DHW pump option must be used.
On demand of the DHW sensor or thermostat and depending on parameter
J
(refe-
rence: Par. 6.6.11)
, the boiler:
- either operates the three way valve diverting flow water from HTG to the calorifier
(Note: please refer to the resistance graph below)
or
- powers the DHW pump and turns off the HTG or boiler pump.
Fig. 10
DHW three way valve resistance graph
The boiler flow temperature is boosted to the DHW set point + DHW control stop set
point
(see Par. 6.6.7 and 6.6.10).
When the DHW sensor or thermostat is satisfied the boiler turns off. The control
powers the three way valve from DHW to HTG or turns off the DHW pump and turns
on the system pump (provided there was still a HTG demand. If no HTG demand, the
selected pump will run on for a maximum of 5 minutes).
A Broag high output indirect calorifier can be connected to the Remeha Quinta 45 and
65 in accordance with the schematic sketch shown
(see Fig. 11 and 12).
