Connection Between 2 Dim With Hydraulics In Parallel - Immergas DIM 2 ZONE ERP Instructions And Warnings

3.10 CONNECTION BETWEEN 2 DIM WITH HYDRAULICS IN PARALLEL.

DIM TO BOILER BUS CONNECTION WIRING DIAGRAM.
If the first 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 first one using input X11.
The first DIM will be connected to the boiler via
IMG BUS and it will detect the value of the external
probe from the boiler.
The LT zone flow temperature of the first 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 different to
Superior kW.
The second DIM receives only the zone signal state
from the first DIM and it must be connected to
an external probe (if required); the relative flow
temperature of LT zones of the second DIM must
be adjusted on its trimmers.
DIM TO BOILER STATE SIGNAL CONNECTION WIRING DIAGRAM.
If the first 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 first one using input X5.
The first DIM must be connected to one of its external
probes (if required) and the LT zone flow temperature
must be adjusted on its trimmers.
The second DIM receives only the zone signal state
from the first DIM and it must be connected to an
external probe (if required); the relative flow temper-
ature of LT zones of the second DIM must be adjusted
on its trimmers.
ZONES CONTROL
UNIT 1st DIM V2
BUS IMG connection to boiler
Boiler ignition request
ZONES CONTROL
UNIT 1st DIM V2
External
probe
(optional)
Zones signal state from boiler
25
3-13
ZONES CONTROL
UNIT 2nd DIM V2
External
probe
(optional)
3-14
ZONES CONTROL
UNIT 2nd° DIM V2
External
probe
(optional)