User`s guide

Section PLUMBING INSTALLER
Ed. 04/2012 47
Figure 16 – Connection diagram between ACF60-00’s
3.4 GAS SUPPLY SYSTEM
The ACF60-00 is designed to run on either natural gas or L.P.G.
The supply pressure from the distribution network must be between:
17 and 25 mbar for natural gas (G20);
25 and 35 mbar for L.P.G. (G30);
Supplying gas to the ACF at pressures higher than the recommended pressures
could damage the gas valve, creating a dangerous situation.
The installation of gas supply tubes must be done in conformance with the UNI-CIG
regulations as well as any other regulations in force.
For the ACF to run on L.P.G., a primary pressure reducer must be installed near the LP
tank to reduce the pressure to 1.5 bar. A secondary pressure reducer must be installed
near the ACF to lower the pressure from 1.5 bar to 0.03 bar before intake into the valve.
®
®
1
3
4
5
7
8
P
P
2
P
P
9
DDC
KEY
1 FLEXIBLE CONNECTORS 6 PUMP
2 PRESSURE GAUGES 7 EXPANSION VESSEL
3 FLOW CONTROL VALVE 8 ACCUMULATION TANK
4 WATER FILTER 9 DIRECT DIGITAL CONTROLLER (available as an
accessory
5 SHUT-OFF VALVE
6
GAS
(needed for each ACF with plant water content
less than 70 litres)