5
HYDRAULIC INSTALLATION
Installation, user and maintenance manual – AY Condensing line, AY Series
23
Figure 5�3 – Diagram of hydraulic system (type with several appliances)
Example of hydraulic plant diagram for connection of no. 2 AY00-120 units.
LEGEND
1
anti-vibration coupling
2
pressure gauge
3
flow regulator valve
4
water filter
5
check valve
6
system expansion tank
7
system water circulator
8
DDC
9
AY00-120 stand-alone
5�4
GAS SUPPLY
The installation of gas supply pipes must be compliant with current regulations and norms.
For the pressure of the gas supplied by the mains see Table 5.2
→
24.
Supplying gas to the appliance at pressures higher than those indicated above can damage the gas valve, resulting in dan-
gerous situations.
LPG systems must be equipped with a first stage pressure reducer close to the LPG storage tank, in order to reduce the gas pressure
to 1,5 bar, and a second stage pressure reducer, close to the unit, in order to reduce pression from 1,5 bar to the value in agreement
with the gas network pressure of the country of installation (see Table 5.2
→
24).
Exemple for the Italian market: for the G30 gas, from 1,5 bar to 0,030 bar (30mbar); for the G31 gas, from 1,5 bar to 0,037 bar
(37mbar).
