Appendix
0020149561_01 ecoCRAFT exclusive Installation and maintenance instructions
41
H.2
Connection diagram, extract
Cylinder charging pump
Mains input
eBUS connection
Contact thermostat
Control accessory plug
VRC 4xx/7xx or ZP single start
Pump PWM signal
External control/room thermostat 7-8-9
S
upply v
o
lt
age
Extr
a-lo
w v
olt
age
E
d
ge c
onnect
or
blue
re
d
whit
e
tur
quois
e
viole
t
gr
een
gr
e
y
Heating pump
0-10 V
Signal
Pump
module
0-
10 V output
E
dge c
onnect
or
24 V supply
blue
red
black
blue
white
X13
X18
X1
X41
X22
Cylinder charging pump*
X6
pink
Bridge*
*
If you connect the cylinder charging pump downstream of a low loss header or a heat exchanger, set this bridge and con-
nect the cylinder charging pump to X6. Set the value from
D.26
to 3. Otherwise, connect the cylinder charging pump to and
do not set the bridge.
