Riello NXHP Series Installation, Operation And Maintenance Instructions page 38

3 - INSTALLATION OF SYSTEM
3.4.2 - Electrical connection
3.4.3 - Control configuration steps
Steps Table
Set Booster stages
38
Par. Designation
601 Backup Type
602 Booster Warm up Timer
604 Booster OAT Threshold
Customized DO#8 Config
505
or
506
Customized DO#9 Config
QS QS
A1 A1
KM02 KM01
A2 A2
T> T>
Tmax. Tmax.
Description
0 = No backup
1 = Booster by 1 Electrical Heat Stage (EH1)
2 = Booster by 2 Electrical Heat Stages (EH1/EH2)
3 = Booster by 3 Electrical Heat Stages with 2 outputs
(EH1/EH2)
4 = Booster by 3 Electrical Heat Stages with 3 outputs
(EH1/EH2/EH3)
5 = Backup by Oil or Gas Boiler
Once the unit has started, if after this timer has expired
the capacity demand is at maximum and the setpoint
isn't reached, then the booster is activated
Booster heating is allowed to run if OAT goes below
this threshold (with 1 K
hysteresis).
11: electric heater satge #3
Range Default Ex. Unit
0 to 5 0 2 -
0 to
30 20 min
120
-20 to
-7 2 °C
15
-
0 to 13 0 11
-