5
Before mounting, check that the gas meter has sufficient capacity (in
m
3
). To do this, you should bear in mind the consumption of all applian
ces.
If the capacity of the gas meter is too low, inform the gas supply compa
ny.
The boilers are designed to run on natural gas G20 and can be conver
ted to run on G25 or G31 gas.
To use a gas type other than natural gas (G20, G25) or LPG gas
(G31), contact an accredited assistance service.
Power supply voltage 230 V AC/50 Hz
Respect the polarities shown on the terminals: live (L), neutral (N)
and earth (
)
The boiler's water flow rates must be higher than or equal to the specifica
tions in the table below.
Tab.10 Water flow rates in the boiler
Unit POWER HT+ 1.50 POWER HT+ 1.70 POWER HT+ 1.90 POWER HT+
1.110
Minimum flow rate Litres/hour 800 1500 2000 2250
Working flow rate
with the low-loss
header kit
Litres/hour 2450 3500 4600 4800
ΔT: Temperature difference between the flow water and the return
water in the boiler
Q flow rate (litres/hour)
H pressure in metres of water column (mWC)
Operating water flow rate at nominal heating flow rate = 1330 litres/
hour where ∆T = 30°C
Operating water flow rate at nominal heating flow rate = 2000 litres/
hour where ∆T = 20°C
Operating water flow rate at nominal heating flow rate = 2660 litres/
hour where ∆T = 15°C
Fig.13 Pressure drops for POWER HT+
1.50
MW-3000007-01
2
4
6
8
10
12
0
1000
500
1500
2000
2500
3000
2
3
1
4
5
5 Before installation
24 7609474 - v02 - 04092014
To Next Page
Loading...
Need help?
General
