-16-
9
Route the remote controller cable from terminals 1 to 7 in the CWR unit, (Fig. 1), along with the existing wires from
the unit and connect to the remote controller as shown in the table below. Secure all cables inside the unit to ensure
that they do not foul the fan or touch the electric heater, (if fitted).
CWR
ELECTRONIC THERMOSTAT
FUNCTION
1
4
NEUTRAL
2
1
LIVE
3
22
BOOST SPEED
4
21
HIGH SPEED
5
20
LOW SPEED
6
6
COOL
7
2
HEAT
10
(If an IMI Air Conditioning electromechanical controller was previously used, the connections in the original controller
are numbered the same as the terminals in the CWR unit).
11
Setting instructions:
The cooling differential (cool in to cool out) is fixed at 1.5C.
The heating differential (heat in to heat out) is fixed at 0.5C.
The square, black potentiometer, (P3, Fig. 3), adjusts dead zone; fully anti-clockwise gives 0.5K, fully clockwise
(through 270
/
) gives 7.5K (as shown on the printed circuit board). The set point limits can be adjusted on the back
of the push-fit dial;
DO NOT SET THE LOWER SET POINT BELOW 15
/
C.
On cool only units, turn the potentiometer, P3, fully anti-clockwise (dead zone 0.5K).
TYPICAL SETTINGS:
--o--o--O--O--O--o--o--
REMOTE SENSOR KIT 97200212
(FOR RCC 30 REMOTE CONTROLLER 97200211)
This instruction is also applicable to return air sensor spare 04000012S
The sensor can be fitted to the return air inlet to an air conditioning unit to improve operation eg. if the wall thermostat
is placed outside the space being conditioned, or if there is considerable stratification in a room with a high ceiling, where
the wall thermostat would not measure a representative temperature.
ITEM
QTY
DESCRIPTION
1
1
Sensor (4m lead)
2
2
Tie wrap
ISOLATE THE SYSTEM ELECTRICALLY
PRIOR TO INSTALLATION OF THE SENSOR
Connect the sensor to terminals B1 and M , as shown (polarity is unimportant).
Tie wrap the sensor to a suitable place in the return airflow, where it will soak
in a representative temperature.
After installation, adjust the thermostat to confirm satisfactory operation, noting
that DX units may experience a three minute delay if the compressor has
recently run.
--o--o--O--O--O--o--o--
Heronhill - for all your Airking requirements
Tel: 01823 665660
www.heronhill.co.uk
Fax: 01823 665807
