Appendix F - Typical Water System Schematics - Riello Array AR 399 SE Installation, Operation And Service Manual

APPENDIX

APPENDIX F - TYPICAL WATER SYSTEM SCHEMATICS

Layout 1: circuit with boiler directly linked to heating system (check that the pump's discharge head is sufficient to ensure ade-
quate circulation)
Layout 2: circuit with boiler directly linked to heating system and indirect DHW tank. (check that the pump's discharge head is
sufficient to ensure adequate circulation)
OS
4
1
8 7
EAF
1 Isolating valve
2 Check valve
3 Anti-scald mixing valve
4 Expansion tank
5 Pressure relief valve
6 Drain
9
WARNING: Domestic hot water and central heating circuits
must be completed with expansion tanks of adequate ca-
pacity and suitability, correctly-sized pressure relief valves.
The discharge of pressure relief valves and appliances must be
connected to a suitable collection and disposal system.
9
CAUTION: The choice of system components and the method
of their installation are left up to the heating engineer install-
ing the system. Installers must use their expertise to ensure
OS
4
1
8 7
EAF
11
5
6
10
1
7
8
9
10 Diverter valve
11
11
5
6
1
5
6
MI
2 1
1
RI
1
6
Water softener filter
Pressure reducer
Domestic water storage tank
Pump
proper installation and functioning in conformity to all appli-
cable legislation.
9
CAUTION: Special supply/refill water must be conditioned using
suitable treatment systems.
0
WARNING: It is prohibited to operate the boiler without water.
57 57
MI
1
2
RI
1
1
3
UAC
4
9
8
M 2
1 7
1
OS Outdoor temperature
sensor
MI High temperature system
supply
RI High temperature system
return
EAF Domestic cold water inlet
UAC Domestic hot water outlet
RECYCLING AND DISPOSAL APPENDIX
5
6
1
EAF