Hydraulic Circuit - Riello BAG2 MIX Instructions For The Installer And The Technical Assistance Service

E - Inlet (3/4")
U – Outlet (3/4")
MD – Delivery, direct system (3/4")
Mmix – Delivery, mixed system (1")
Rmix – Return, mixed system (1")
RD – Return, direct system (3/4")
The maximum length of plumbing connections
between the boiler and theBAG
not exceed 15 m.
The BAG 2 MIX is fitted with two circulation units, the per-
formance data to be used to size the system, is shown in
the graph.
When starting up for the first time, and at least once a
year, it is advisable to check the pump units shaft
rotate. This is necessary because, especially after
lengthy periods of inactivity, deposits and/or residue
CIRCULATOR RESIDUAL HEAD
HIGH TEMPERATURE SYSTEM
5,5
5,0
4,5
4,0
3,5
3,0
2,5
2,0
1,5
1,0
0,5
0,0
0 200 400 600
Capacity (l/h)
1 - first speed
2 - second speed
3 - third speed
2 MIX unit must
2
1
800 1000 1200 1400 1600
MD Mmix
may stop it rotating freely.
Do not run the circulation units without water.
Where present in high and low system flo regulator
devices (thermostatic electrical or motorized zone
valves) it is better to inster a by pass on the collectors.
CIRCULATOR RESIDUAL HEAD
LOW TEMPERATURE SYSTEM
3
1800 2000
1 ( ) first speed with close mix valve
1 ( ) first speed with open mix valve
2 ( ) second speed with close mix valve
2 ( ) second speed with open mix valve
3 ( ) third speed with close mix valve
3 ( ) third speed with open mix valve

HYDRAULIC CIRCUIT

HYDRAULIC CIRCUIT HYDRAULIC CIRCUIT HYDRAULIC CIRCUIT HYDRAULIC CIRCUIT
E U
Rmix
RD
C C C C C IRCULATION UNIT IRCULATION UNIT IRCULATION UNIT IRCULATION UNIT
IRCULATION UNIT
1
Capacity (l/h)
GENERAL
3
2
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