Connection Of Boiler Return Mixing-Valve Or Modulating Valve Actuator - Viessmann VITOTRONIC 300 GW2 Installation And Service Instructions Manual

Installation
Connection of boiler return mixing valve or modulating valve actuator
(VD2/VD2A/CT3 only)
1 120V or 24V valve adaptor
2 DIN rail in connection enclosure
3 aBH Terminals
120V valve adaptor
Rated voltage: 120 VAC
Rated current: max. 0.1 FLA
Recommended connection
wire size: AWG 14
Part No.: 7134 560
24V valve adaptor
Rated voltage: 24 VAC
Rated current: max. 0.15 FLA
Recommended connection
wire size: AWG 14
Part No.: 7134 559
Operating time:
5 to 199 sec. selected via coding
address "40".
32
1 120V valve adaptor
2 120V valve actuator
1 24V valve adaptor
2 24V valve actuator
1. Disconnect power to control.
2. Install 120V or 24V valve
adaptor on DIN rail inside
connection enclosure.
3. Insert the plug gS into socket
gS on the control.
4. Fasten cable with tie.
(see page 21).
5. Connect black wire of the
adaptor to connection aBH on
the DIN rail.
- Terminal 8,9 or 10.
6. Connect valve actuator wires to
the adaptor terminals as shown
in figures.