Instruction manual
WWH Heater
Pag. 9
M
Motor WWH
T
1
3
2
T
1
3
2
Aanleg thermostaat
Contact thermostat
Rohranlegeregeler
Thermostat d´applique
art: IH.8500
Ruimte thermostaat
Room thermostat
Raumthermostat
Thermostat d´ambiance
art: IW.3950
L
(2
3
0
V
AC
)
N
L
U N
N
Fan
5 standen schakelaar
5 speed switch
5 Stufenregler
M
d & e:
aan/ uit contacten voor CV
ON / OFF contacts to central heating
Zone-regelklep
zone valve
art: GA3980
d
:
o
ra
n
je
,
o
ra
n
g
e
a: bruin, brown
b: blauw, blue
e
:
g
ri
js
,
g
re
y
4.4 Connection with zone valve
The zone valve is applied on the WWH when one boiler has to heat several rooms separately. In this
situation the zone-valve
will control the hot water boiler and hot water supply to the WWH. Operation
in short can be summarized as follows:
•
Heat demand is created through the room thermostat.
RT switches 230Volt and powers the zone-valve, this will switch the boiler on.
•
Boiler makes hot water.
•
Contact Thermostat measures water temperature. If water temperature is higher than the
temperature set, CT will supply power to the WWH. The fan will blow. If an optional 5-stage
switch has been applied, the current will first be transformed to the voltage desired, the fan
will turn faster/slower.
•
If temperature requested has been reached, the RT will open the contact and cut off power
supply to the zone-valve; the boiler will be shut off eventually.
•
CT measures a water
temperature that is lower than
the temperature set and will
open the contact. The fan will
stop!
