SAVE VTR 300B SERVICE AND ACCESSORIES INSTALLATIONV1 20210616 121938589

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Accessories
5.5 Installation/Maintenance
5.5.1 Outdoor/Exhaust air dampers
If manual fan stop is activated, the unit should be provided with dampers in exhaust and outdoor ducts
to avoid cold draught and risk of condensation when the unit has been stopped.
• RL — relay box
• U- outdoor air damper
• V — exhaust air damper
• 1 — Outdoor air
• 2 — Supply air
• 3 — Extract air
• 4 — Exhaust air
Component/product — Article number:
• TUNE-R-1160-3-M4 (U/V) — 311969
• EFD 160 Damper + TF230 motor — 7122
• Relay kit:
RMK — 153549
• Relay kit with a transformer for 24 VAC dampers:
RMK–T — 153548
For all possible connection variations please see wiring diagram delivered with the relay mounting kit.
Fig. 14 Damper connection
Note:
24 VAC dampers can be powered and
controlled only by using a relay mounting kit
with a transformer (article number: 153548).
This installation procedure describes how to connect
dampers powered by 230 V~ with a relay mounting kit
without transformer (article number: 153549).
Installation and connection
1. Install dampers (U/V).
2. Connect control signal wires (24V, DO) coming out from
the relay box (RL) to any free digital output on the con-
nection board (CB).
3. Connect power supply wires (N) from dampers to the
terminal block. Connect control signal wires (Y, line)
from dampers to relay socket terminals (11, 21). See
illustration.
When damper with a non-spring return actuator is
used, an addition power line (L) has to be connected to
the terminal block since such damper requires constant
power supply.
4. Connect power supply wires (L, N) coming out from the
relay box to 230 V~ power source.
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