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VARINO GRANDE 350 - 600
We reserve the right to make changes to dimensions and construction 18 Edition 10.07.2015
© Copyright YGNIS AG CH-Ruswil
6.9.3. Sensor assembly
Junction boxes or sockets are to be avoided. Sensor and extra-low-voltage cables must be laid separately from
mains lines. Use own sensor cable with max. 100 m length, cable 2 x 1 mm
2
not screened
Cable length: up to 25 m cable cross section: 0.25 mm
2
Cable length: up to 50 m cable cross section: 0.5 mm
2
Cable length: up to 100 m cable cross section: 1.0 mm
2
External sensor: In 2/3 facade height or on 1
st
floor not above windows or below roof preferably
installed on the north or north west side. Avoid direct sunlight. Position to be
arranged with heating planner.
Forward flow sensor: Supply flow clip-on sensor
assemble directly behind the pump (approx. 0.5 m) in the supply flow of the heating
or, if the pump is assembled in the return flow, approx. 1.5 m after the mixer position.
Assembly: assemble on the bare pipe with supplied clamp band, without conductive
paste
Supply flow immersion sensor
assemble directly behind the pump (approx. 0.5 m) in the supply flow of the heating
or, if the pump is assembled in the return flow, approx. 1.5 m after the mixer position.
Assembly: assemble in the pipe bend against the flow direction of the heat transfer
medium
Room remote controls Assemble in the main living quarters on the interior wall. Do not subject to the
influence of sun or external heat (chimney wall, radiator proximity, drafts, televisions,
lighting fixtures). Do not cover with furniture or curtains, mount approx. 1.2 1.5 m
over the floor. Seal installation pipe against drafts. All room sensors and room
remote controls are "active" and therefore directly connected to the device bus. The
cable lengths of all lines on the device bus must not exceed the maximum length of
200 m! Cables 2x1 mm
2
, wires not screened, lay separately from power lines,
junction boxes and sockets are to be avoided.
Return flow sensor, boiler sensor, safety temperature limit devices and temperature monitor are positioned by
works and supplied as-wired.
The O2-sensor is delivered separately and is mounted at commissioning in order to prevent eventual damage to
the sensor during the construction period.
The electrical cables and lines must be laid and secured as shown in the illustration. For strain relief, the cables
should be fastened with cable binders to the threaded rod of the boiler nose peace. Mains and extra-low-voltage
cables (sensor lines, bus lines etc.) are to be routed separately. Unnecessarily long cable loops must not be
rolled up inside of the boiler casing.
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