klover K top, User Manual

Page: 34 / 64

34
Control of any 3-way valve fitted for the DHW circuit
The heating cooker/heating stove is equipped as standard
with a control for a possible 3-way motorized valve to be
installed on the domestic hot water circuit.
(see wiring diagram
on page 30) . Inside the attachment compartment on the
heating cooker/heating stove, there is a cable with 4 wires that
can be used to control this valve. The four wires in the cable
have different colours, and precisely:
1. Grey or blue wire = COMMON TO 3-WAY VALVE
2. Black wire = HEATING COOKER/HEATING
STOVE SIDE
3. Brown wire = GAS BOILER SIDE
4. Yellow/green wire = GND
Below is an example of a connection using a 3-way valve with
spring return. Remember that the hydraulic connection must be
made in such a way that when the valve is at rest, the water
passes from the gas boiler. Only when the heating
cooker/heating stove temperature is sufficient (the value is set
from control panel) is the 3-way valve powered; it then closes the
gas boiler circuit and opens the heating cooker/heating stove
circuit.
MA
RRO
N
E
GI
ALLO
/V
ERD
E
G
RI
GI
O
O
BL
U
N
ERO
Valvola a 3 vie
N.B.: The brown wire can be used to control a service
relay if fitted.