Wiring Diagrams - Beretta CONNECT AT/BT Manuel D'instruction

CIRCULATION UNIT
The Connect AT/BT is fitted with two circulation units, the perform-
ance 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 may stop it rotating freely.
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
1 - first speed
2 - second speed
3 - third speed

WIRING DIAGRAMS

2
1
800 1000 1200 1400 1600
Capacity (l/h)
Do not run the circulation units without water.
Where present in low system flo regulator devices
(thermostatic electrical or motorized zone valves) it is better
to inster a by pass on the low temperature system collector.
7,5
7,0
6,5
6,0
5,5
5,0
4,5
4,0
3,5
3
3,0
2,5
2,0
1,5
1,0
0,5
0,0
1800 2000 0 200 400
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
37
CIRCULATOR RESIDUAL HEAD
LOW TEMPERATURE SYSTEM
1
600 800 1000 1200
Capacity (l/h)
1 main supply cable entry
3
2
1400 1600 1800 2000