Typical Water System Schematics - Riello Condexa PRO NA 75P Installation, Operation And Service Manual

INSTALLATION

2.10 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)
EAF
1 Isolating valve
2 Check valve
3 DHW circulation pump
4 Expansion tank
5 Pressure relief valve
6 Drain
7 Water softener filter
8 Pressure reducer
9 Domestic water storage tank
9
WARNING: Domestic hot water and central heating circuits must be completed with expansion tanks of adequate capacity and suit-
ability, 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 installing the
system. Installers must use their expertise to ensure proper installation and functioning in conformity to all applicable 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.
OS
CONDEXA PRO
North America
12
4
1 1
8 7
EAF
OS
CONDEXA PRO
North America
12
5
4
1 1
8 7
10 Automatic air vent
11 Diverter valve
12 Pump
13 High-temperature system circulator
14 Indirect tank circulator
5
6
2
6
MI
2 1
11
RI
1
20
MI
1
RI
1
UAC
5
10
1
6
3
4
2
1
1 7 8 1
EAF
9
6
OS Outdoor temperature
sensor
MI High temperature system
supply
RI High temperature system
return
EAF Domestic cold water inlet
UAC Domestic hot water outlet