35
8.13 Smoke detector (Xcell 400 QVI model only)
Refer to sections 7.6 and 7.10 for the relevant wiring diagrams.
Up to four Smoke Detectors can be connected to each MVHR.
Minimum size of 3-core cable to be used for switch connections: 0.5mm².
When a Smoke Detector is used with the MVHR, the MVHR switches off immediately if smoke is detected.
When this occurs, the display on the MVHR flashes GREEN and “smoke alarm monitoring” is displayed on the
display panel.
Note – there is no audible noise emitted from the MVHR or the Smoke Detector if smoke is detected.
Technical Data:
Operating voltage:
24V DC
Residual ripple:
<20%
Current:
5-7mA
Normal operating temperature: 0°C to 60°C
Storage temperature:
75°C max.
Protection category:
IP42
Weight:
100g
Relative humidity:
10-90%
8.14 RF (remote control) receiver and transmitter (Xcell 400 QVI model only)
Refer to sections 7.6 and 7.11 for the relevant wiring diagrams for the RF Receiver. No wiring is required for the RF
Transmitter, refer also section 7.12. Only one RF Receiver is required for each MVHR. Up to six RF Transmitters can
be used with each MVHR, placed in various locations around the house.
Minimum size of 3-core cable to be used for RF Receiver connections: 0.5mm².
Button „I‟ - switches the MVHR to speed 1 (Night speed).
Button „II‟ - switches the MVHR to speed 2 (Normal running).
Button „III‟ - switches the MVHR to speed 3 (Boost).
„Auto‟ button - switches the MVHR to automatic mode (gives the CO
2
/ Humidity Sensors priority over speed control).
„15 min‟ button - switches the MVHR to boost speed for 15 minutes then returns to automatic setting.
„60 min‟ button - switches the MVHR to boost speed for 60 minutes then returns to automatic setting.
1)
When the RF controllers are used without additional CO
2
/ Humidity Sensors, automatic mode always switches
the MVHR to speed 1.
2)
When the RF controllers are being used with a CO
2
Sensor and/or a Humidity Sensor, automatic mode always
gives the CO
2
Sensor and/or Humidity Sensor priority over the speed control.
When button I, II or III is selected, the RF controller changes over to manual speed control.
3)
When pressing the „15 min‟ or „60 min‟ buttons, the MVHR switches to speed 3, boost. After the selected time
period has elapsed, the MVHR returns to automatic operation, giving the CO
2
Sensor or Humidity Sensor priority
over speed control again, if connected to the MVHR.
RF Transmitters are powered by a CR2032 Lithium Manganese (Li-Mn) 3V battery. Remove from the wall and
carefully remove the casing to access the battery compartment for replacement.
Ensure the casing, rear panel and front panel are correctly aligned before re-assembly.
Battery
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