Immergas DIM 2 ZONE ERP - Connection between 2 DIM with Hydraulics in Parallel

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3-14
3-13
INSTALLERUSER
MAINTENANCE TECHNICIAN
3.10 CONNECTION BETWEEN 2 DIM WITH HYDRAULICS IN PARALLEL.
If the rst DIM is connected to the boiler via zone sig-
nal state and a second one is to be connected hydrau-
lically in parallel, connect the central heating request
of the second DIM to the rst one using input X5.
e rst DIM must be connected to one of its external
probes (if required) and the LT zone ow temperature
must be adjusted on its trimmers.
e second DIM receives only the zone signal state
from the rst DIM and it must be connected to an
external probe (if required); the relative ow temper-
ature of LT zones of the second DIM must be adjusted
on its trimmers.
DIM TO BOILER BUS CONNECTION WIRING DIAGRAM.
DIM TO BOILER STATE SIGNAL CONNECTION WIRING DIAGRAM.
If the rst DIM is connected to the boiler via IMG
BUS and a second one is to be connected in parallel,
connect the central heating request of the second
DIM to the rst one using input X11.
e rst DIM will be connected to the boiler via
IMG BUS and it will detect the value of the external
probe from the boiler.
e LT zone ow temperature of the rst DIM
will be set on Superior kW boilers connected via
IMG BUS, or on DIM zone control unit trimmers
when the same is connected to boilers dierent to
Superior kW.
e second DIM receives only the zone signal state
from the rst DIM and it must be connected to
an external probe (if required); the relative ow
temperature of LT zones of the second DIM must
be adjusted on its trimmers.
ZONES CONTROL
UNIT 1st DIM V2
ZONES CONTROL
UNIT 2nd DIM V2
External
probe
(optional)
BUS IMG connection to boiler
Boiler ignition request
ZONES CONTROL
UNIT 1st DIM V2
ZONES CONTROL
UNIT 2nd° DIM V2
External
probe
(optional)
External
probe
(optional)
Zones signal state from boiler