Vaillant uniSTOR - Page 41

Installation and maintenance instructions for uniSTOR 0020111105_00 25
– eBUS-compatible Vaillant gas-fired wall-hung boiler
– Wiring via Control Center VR65
– Primary heating circuit control via Vaillant dual-channel
eBUS controller
– Room heating control via Vaillant dual-channel
eBUS controller
– S plan
> Next to the domestic hot water cylinder, install the Con-
trol Center VR65.
> Dismantle the cover of the VR65.
i
The terminals NTC and CYL. of the VR 65 may
not be connected at the same time.
Option 1: Temperature sensor (NTC) on VR65:
> Insert the VR 10 temperature sensor delivered with the
VR 65 into the immersion sleeve (2¬fig. 5.7)
for the reheating circuit (NTC).
> Connect the temperature sensor (NTC) to the terminal
NTC of the VR 65.
Option 2: Cylinder thermostat to VR65:
> Dismantle the cover of the cylinder thermostat (7¬fig.
5.7).
> Connect the terminals 1 (cylinder thermostat)
(3¬fig. 5.8) and C (reheating circuit TCO)
(5¬fig. 5.8) to the terminal CYL. of the VR 65.
> Mount the cover for the cylinder thermostat.
The electrical installation of the eBUS connection is
described in the installation instructions for the Vaillant
dual-channel eBUS controller.
> Install the eBUS connection from the gas-fired
wall-hung boiler to the Control Center VR65.
> Install the eBUS connection from the gas-fired wall-hung
boiler to the Vaillant dual-channel eBUS controller.
The electrical installation of the zone valves is described
in the installation instructions for the VR 65.
> Connect the zone valves for the heating circuit and hot
water circuit in accordance with connection diagram 1 (S
plan hydraulics).
> Install the mains connection cable for the VR65.
> Mount the covers of the VR65.
> Connect the gas-fired wall-hung boiler and the VR 65 to
the power mains.
> Adjust the Vaillant dual-channel eBUS controller in
accordance with its operating and installation instruc-
tions.
Installation 5