Kair KHRV150/12RH Installation & Maintenance Instructions Manual Download Page 8

Location of the Transformer/Humidity Sensor unit - 2

Page

7

p)

Follow the line diagram below to make the correct connections between the fan assembly and
the transformer/humidity sensor, and wall plate.

Place the fan assembly and front cover through the wall plate and push home. Apply power
to the system and check operation. Conduct a smoke test to ensure the extract fan is
running. Check that the front filters are in place and screw the front cover to the wall plate
with the screws provided.

q

)

NOTE:

 If the unit has automatically switched to boost due to high humidity in the room, the pull cord switch

will have no effect until the humidity drops below the preset level:

r)

IMPORTANT:

 The pull cord manually switches the fan unit from trickle to boost. If the pull

cord option is not required, when the installation is complete remove the cord ensuring that
the switch is in the TRICKLE position. The LED shown on page 2, being extinguished,
confirms this.

After  the  system  has  run  for  some  time,  check  the  fan  unit  switches  to  boost  by  directing
steam from a kettle over the remote control unit.

The fan’s continuous trickle speed has been factory set. However, if it is found that the fan is
audible at this setting, it is possible to reduce the trickle speed still further. Remove the lid of
the control box, and move the fuse link from

fast

trickle to

slow

trickle position (see diagram

below). Always replace the fuse with one of the correct type and rating.

s)

Transformer/Humidity Sensor unit Wiring

SELECT EITHER SLOW
OR FAST SPEED
WITH 5AMP QUICK
BLOW FUSE.

DOUBLE POLE SWITCHED AND FUSED SPUR
WITH

MINIMUM 3mm.

SEPARATION ON BOTH POLES

240V AC

240V 3 AMPS

MAINS INPUT

TRANSFORMER UNIT

TRANSFORMER

LOW VOLTAGE OUTPUT

The fused and Remote Control Unit

must

be

mounted out of reach of anyone using a bath or
a shower.

FAN ASSEMBLY
WALL PLATE

DO NOT
CONNECT

1
2

SLOW TRICKE

FAST TRICKE

1   2   3

L     N

Summary of Contents for KHRV150/12RH

Page 1: ...rmer Humidity Sensor unit 7 Transformer Humidity Sensor unit Wiring 8 Light Level Sensor 8 9 10 Maintenance 10 Registration 11 Warranty www kair co uk What am I Included items Description Qty Through...

Page 2: ...mer Humidity sensor unit The humidistat monitors the humidity in the room and automatically switches the ventilator from continuous trickle speed to boost if the humidity exceeds the set point e g whe...

Page 3: ...sitioned a minimum of 500mm away from any gas flue to avoid back flow of gases Indicate the position of the core drill hole on the inside wall If possible mark its position on the outside wall too See...

Page 4: ...4 036 e Measure the length of the hole between the outside brick face and inner plasterwork The length should be 4mm greater than the length of the hole X but no less than 254mm otherwise the Heat Exc...

Page 5: ...finisher in place Ensure that the finisher does not fall v Now manipulate the finisher to expand it outwards and increase its internal diameter as much as possible This will assist the re entry of the...

Page 6: ...rom the cable entry hole top left upwards to the ceiling or in the direction you have determined for the transformer or remote control Fit screw plugs into the screw holes l Fit the wall plate onto th...

Page 7: ...ELECTRICIAN Decide how you are going to run the wires from the transformer to the fan unit All wiring must be in accordance with current IEE wiring regulations A 5 amp two core power cable is require...

Page 8: ...suring that the switch is in the TRICKLE position The LED shown on page 2 being extinguished confirms this After the system has run for some time check the fan unit switches to boost by directing stea...

Page 9: ...it to perform at its maximum efficiency to control the humidity level within the room in which it is fitted Proper maintenance will also prevent the internal fans switching to boost mode more frequent...

Page 10: ...e main fan unit away from the wall a small distance only at this stage i e 510mm This will allow the front filter covers to be removed without losing dropping or damaging them if required although it...

Page 11: ...ss if the fan unit and wall plate are secured 17 Once the fan has been re instated in the wall and the mains is switched on the filters will continue to clean the incoming air supply to prolong the li...

Page 12: ...re that it is adequately packed and accompanied by a letter clearly marked Guarantee Claim stating the nature of the fault and providing evidence of date and source of purchase The guarantee is offere...

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