Service Connection (Service); Connecting On Wall Outdoor Sensor; Connecting The Outside Sensor; Identifying Label - Baxi 24 Combi Installation And Service Manual

Fig.40 Sensor position
H
1/2 H
2.5m Min
North
N
W
S
Fig.41 Connecting the outside sensor (OS)
Cable gland
6.4.3
Connect the wireless interface to terminal X10 on the boiler PCB, as
shown in the chapter entitled "Electrical diagram".
6.4.4
The sensor must be fixed to an external wall surface of the property it is
serving. The wall must face north or west. Under no circumstance must it
be fixed to a south facing wall in direct sunlight.
The sensor must be positioned approximately at half the height of the liv­
ing space of the property, and a minimum of at least 2.5 metres above
ground level.
To ensure accurate operation do not position the sensor in the proximity of
any heat or cooling source (e.g. a flue terminal). Siting above doors & win­
dows, adjacent to vents and close to eaves should be avoided.
West
E
X
X
PN-0000626
6.4.5
6.4.6

Service connection (SERVICE)

Connecting on wall outdoor sensor

1. Once the position has been determined, prise the cover off the sen­
sor and mark through the sensor body the two fixing holes and the
larger hole for the wiring.
2. Drill & plug the two fixing holes (plugs and screws are supplied with
the sensor). Also drill the hole for the sensor wiring.
3. Insert the sensor wiring through the hole in the wall, leaving suffi­
cient length outside to allow connection. Seal the hole.
Note: 0.5 mm 2 core cable is recommended (the sensor is a low
voltage device). This wiring is NOT supplied in the kit.
4. If it is not possible to pass the wiring through the wall directly behind,
remove the circular 'knock-out' panel in the sensor base to allow
connection.
5. Using the screws provided fit the body to the wall. Insert the wires in
the two-way terminal block and secure them. Replace the sensor
cover.
6. Ensure the electrical supply to the boiler is isolated and remove the
front panel.
7. Hinge down the control box and unclip the connection board cover.
8. Pass the wires from the sensor through the cable gland in the
bottom of the boiler lower panel, leaving sufficient slack to allow the
control box to be hinged fully open.
Connecting the outside sensor (OS)
Connect the outdoor sensor on terminal CB6 (T/OUT) of the connection
board as shown in Fig. 41.
Important
Set the type of outside sensor used by implementing setting
AP056 (see table paragraph "List of installer settings").
For more information, see
The instructions supplied with the sensor.

Identifying label

Important
The identifying label (7221476-01) supplied with the outdoor sen­
sor must be signed and affixed on or adjacent to the boiler. The
label must be readily accessible without removing the boiler cas­
ing or any other disassembly. This label is required to enable SAP
and energy assessors to identify that a weather compensation de­
vice is installed and connected .
6 Installation
600 Combi 2 43