Unical modulex 360 User Manual

27
2.6.4 - DHW STORAGE TANK
DHW production by an outer storage
tank connected to the boiler can be car-
ried out by an electric diverting valve or
a separated storage tank loading pump
Both devices can be chosen via the con-
trol panel push buttons, by selecting the
right parameter A (see paragraph
3.2.8.2, parameter A - 2
nd
digit).
The DHW tank NTC sensor, supplied
as an option, will be connected to the
terminals 7 – 8 of the 20-pole terminal-
strip.
ELECTRICAL CONNECTION OF THE THREE WAY VALVE
WARNING!
There is a 230 V tension between terminals 16 - 18 only when there is a heat
demand by the DHW NTC sensor or by a DHW thermostat; in this case the display
will show :
4 XX (see 3.2.5).
Fig. 17
ELECTRICAL CONNECTION OF A DHW TANK
LOADING PUMP
ELECTRICAL CONNECTION OF A BOILER PUMP (OR A DHW LOADING
PUMP IF WITH A 3-WAY VALVE) Boiler pump or DHW loading pump
WARNING!
There is a 230 V tension between terminals 16 - 18 only when there is a heat
demand by the DHW NTC sensor or by a DHW thermostat; in this case the display
will show :
4 XX (see 3.2.5).
WARNING!
There is a 230 V tension between terminals 11 - 13 only when there is a heat
demand by the DHW NTC sensor or by a DHW thermostat; in this case the display
will show :
4 XX (see 3.2.5).
na
nc
c
16
17
18
B
DHW tank
Boiler AB
A Heating system
Line
3-contact relay

Neutral
LN
V.D. Engine
Power
M
3-WAY VALVE CONNECTION
DHW tank
satisfied
na
nc
c

LN
M
V.D. Engine
Power
Line
Neutral
B
DHW tank
Boiler AB
A Heating system
3-contact relay
3-WAY VALVE CONNECTION
DHW tank
not satisfied
16
17
18
na
nc
c
DHW tank loading pump
DHW
Tank satisfied

LN
DHW tank
Pump Engine
Power
Line
Neutral
3-contact relay
16
17
18
na
nc
c
Line

Neutral
LN
DHW tank
Pump Engine
Power
DHW tank loading pump
DHW
Tank not satisfied
3-contact relay
16
17
18
na
nc
c
11
12
13
CH loading pump/
DHW tank loading pump

LN
Line
Neutral
3-contact relay
DHW tank
Pump Engine
Power
na
nc
c
11
12
13

LN
Line
Neutral
CH loading pump/
DHW tank loading pump
3-contact relay
DHW tank
Pump Engine
Power

Unical modulex 360 Specifications

General

Brand	Unical
Model	modulex 360
Category	Boiler
Language	English