26
BCM relay contacts support pumps with max. 4A
absorption.
P. Coll. - Collector Pump (*) (Primary ring)
P. CH - Heating Pump (heating circuit)
P. Car DHw - Storage tank loading pump
Stemp. ACC. Storage Tank Temperature Sensor (*)
P. Mod. - Modulating Heating Pump (*)
- connect the cables as indicated
Y4.
- connect the cables as indicated
Y3 1-2-3
- connect the temperature sensor cables as indicated
(
Y2 4-8).
- connect the modulation control cables as indicated
(
Y2 4-5).
External 230 V-50 Hz power supply.
NOTE:
The boiler is set up for direct flow and storage tank
management.
If
Stemp. ACC
is connected automatically, dHW
is activated, which will have priority management
with regard to direct flow through the pumps shown
below.
Should additional services be requested (storage
If the storage tank temperature
sensor is connected, dHW service
is automatically activated on boiler
power supply.
the (803)
Srv
code (see Bcm
parameters) goes from
19 to 27.
tanks, mixed areas, solar, etc), you must purchase
SHC
multi-
function modules to connect to the local bus for total manage-
ment through
HSCP
(and
UFLY
) heating controller.
(*) Optional
