EdilKamin AQUAMAXI 28 Installation, Usage Et Maintenance page 32

EXPANSION TANK
The expansion tank absorbs volumes accumulations of water once it is heated.
The closed expansion tank is a vessel with a membrane inside that can absorb up to a certain increase in volume of water.
The installer is responsible for properly sizing the closed expansion tank based on the water content.
The replace unit can be operated with a closed tank ONLY if one of the coils is connected to a heat discharge valve as shown in
the following diagrams.
The open expansion tank positioned above absorbs the variation in water volume and provides the hydraulic system with the pres-
sure necessary to prevent air from entering.
We recommend that it be placed at least 3 metres above the highest element of the circuit.
A lower position can cause frequent "back ows" in the expansion tank with risks for the functioning and life of the replace unit,
so it is important that the installer carefully assess this height.
EXAMPLE OF A HYDRAULIC SYSTEM FOR OPEN-TANK FIREPLACE UNIT, COMBINED WITH A GAS BOILER.
PRODUCTION OF DOMESTIC HOT WATER WITH COIL.
ACQUAMAXI WITH 1 COIL WITH BUILT-IN HYDRAULIC KIT (LEFT OR RIGHT)
BUILT-IN KIT
8
5 7
6
1
3
6
2
4
5
4
INSTALLATION
BUILT-IN KIT
1 Upper header
2 Lower header
3 Heat Exchanger
4 Ball valve
5 Ball valve
6 Pump
7 Pipe 1 primary output
8 Pipe 2 primary output
9 Secondary heating pipe
Electrical Connections
Fuse
Circulator enabled
Overheating alarm
3-way valve
Power Supply
230 Vac
Circulator B
Circulator A
SELECTOR FUNCTIONS
Selector: OFF Everything is switched off
Selector: MAN Driven Circulator Valve is set
Selector: AUTO Circulator is set Valve is set
Alarm selection No acoustic signal in the OFF position
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ACS: Hot Sanitary Water
AF: Cold Water
CA: Wall Mounted Boiler
EV: 3-way Solenoid Valve
NA: Normally Open
NC: Normally Closed
Ja: Automatic Relief Valve
Jm: Manual Relief Valve
MAN: Manometer
MI: System Flow
P: Pump (circulator)
P2: Secondary circuit pump
P1: Circuit pump
RA: Radiators
RE: Electronic Regulator
RI: System Return
S: Drain
Sc 30: 30-plate Heat Exchanger
ST: Temperature Sensor
TC: Thermo Fireplace
V: Valve
VE: Open Expansion Tank
Vec: Closed Expansion Tank
VR: Check Valve
VSP: 1.5 bar Pressurized Safety Valve
VST: Thermal Relief Valve
Display
20 - 80° C
Valve Setting
Enable
Disable
Acoustic
Alarm
Minimum temperature setting
for circulators to be actuated
20 – 80° C
Sensor (insert in the
appropriate well)