Installation 5
0020258610_00 ecoVIT exclusiv Installation and maintenance instructions
15
5.9.4
Connecting electrical components
9
8
7
+
-
5
4
3
N
L
BUS
9
8
7
+
-
5
4
3
N
L
BUS
▶
Open the electronics box. (
→
Page 13)
▶
Wire the cables. (
→
Page 13)
▶
Connect the connection cables to the corresponding ter-
minals or slots in the electronics system.
▶
If you connect a VRT 332 room thermostat (continuous
control connection terminals 7-8-9, white ProE plug) or
a weather-compensated temperature control or room
temperature control (bus terminals, red ProE plug) to
the product, you must leave the bridge in place between
terminals 3 and 4 (purple ProE plug).
▶
If no 230 V room/timer thermostat is used, you must
leave the bridge in place between terminals 3 and 4
(purple ProE plug).
▶
If required, connect accessories in the same way.
Connecting the heating pump
▶
Connect the heating pump to the green ProE plug (X18)
on the terminal block.
Connecting an external flow thermostat
▶
Connect an external flow thermostat (e.g. to protect un-
derfloor heating) to the terminals for the surface-mounted
thermostat (blue ProE plug).
Connecting a condensate pump
▶
Connect the alarm output for a condensate pump to the
terminals for the surface-mounted thermostat (blue ProE
plug).
Note
If several contacts are connected to the
terminals for the surface-mounted thermostat
(blue ProE plug), connect the contacts in
series and not in parallel.
▶
Close the electronics box. (
→
Page 13)
5.9.5
Connecting the domestic hot water cylinder
3
1
2
1.
Connect the cylinder temperature sensor
(3)
and, if
required, the charge temperature sensor
(2)
(actoSTOR
only, electronics box connection cable, purple
(1)
) on
the cable harness.
2.
For the electrical connection, observe the set-up in-
structions for the domestic hot water cylinder and the
accessory.
5.9.6
Connecting the control
To control the heating installation, you can use a weather-
compensated outdoor temperature control or room temper-
ature control with modulating burner control, e.g. VRC 450
or 700, VRC 630 or 620. The wiring diagram for the elec-
trical connection to the heating control can be found in the
appendix.
▶
Observe the information in the control's installation in-
structions.
▶
Before opening the electronics box, switch off the power
supply to the product and protect this against being unin-
tentionally switched on again.
▶
Connect the "Bus" connections (red ProE plug, two-wire)
to the connections with the same names in the control
(VRC 700: Only if the control is attached externally).
Leave the bridge between terminals 3 and 4 (purple ProE
plug). When connecting a VRC 630/VRS 620, make sure
the bus line is connected the right way round (+ to +, - to
-).
▶
Alternatively, insert the VRC 700 control into the pro-
duct's control panel fascia (internal installation).
▶
Connect sensors and the system assemblies that are not
listed in the section "Connecting electrical components"
to the control.