RECOMMENDATIONS FOR HYDRAULIC CONNECTIONS
Essential recommendations for safety
•
If the boiler is not equipped with one, the heating circuit of the system must be
fitted with an approved safety pressure relief valve, according to the pressure
mentioned on the type plate.
•
Use a two-wrench method when tightening field piping onto the boiler piping
connections. Use one wrench to prevent the boiler connections from the turning
and the second to tighten field piping. Failure to support the boiler piping
connections could damage piping or cause a leak.
Essential recommendations for the correct operation of the appliance
•
If the boiler is not equipped with one, make sure to install an expansion vessel
in the primary circuit, which is adapted to the boiler power/size and the type of
system.
General remark
•
The circuit illustrations are basic principle diagrams only.
HEATING CONNECTION
Typical connection - high temperature
1. Heating circuit isolating valve
2. Check valve
3. Heating pump of the system
4. Mixing valve
5. Safety group
6. Primary circuit filling valve
7. Heating circuit expansion vessel
8. Drain valve
9. Automatic air bleed valve
10. Bypass
11. Safety thermostat for floor heating circuit
Do not install thermostatic valves on
the radiators located in rooms fitted
with a room thermostat.
2
3
1
1
8
2
6
7
5
4
10
9
2
3
1
1
8
2
6
7
5
4
11
t
10
9
Typical connection - low temperature
Cold water
Hot water
N1 - N2 - N3 eco : A1005170 - 664Y7700 • B
EN
FR
NL
ES
IT
DE
PL
RU
en
17
INSTALLATION
Optional accessories are available to control a regular high or low temperature heating
circuit. For more information, contact your ACV representative.
