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STRATTON MK3 - Installation, Use and Maintenance
12.2.1. UIN 235781 Programmable Room Sensor
Refer to the QAA74 installation instructions, and the Boiler or External module
installation manual as required when carrying out the installation.
12.2.1.1. Location
Determine the optimum location as recommended in the QAA74 installation
instructions.
For basic operation a 2-core cable is only required to be run between the
Room Sensor and the associated Boiler or External module.
When illumination is required a 3-core cable is needed. The additional
connection for the Backlight function is DC 12V G+.
Note:
When wiring to a boiler there is a limitation in the current available
on the BSB bus for the 2-wire connection, this is at 40mA. A QAA74 using
a 2-wire connection requires 24mA, so if more are required to be fitted and
wired to the boiler then the 3-wire option must be used.
Note:
In an electrically noisy environment, it is recommended that a screened
cable be used. The screen should only be connected to ground at one end.
12.2.1.2. Fixing
Follow the fixing instructions as detailed.
12.2.1.3. Wiring
At the QAA74, route and make the connections as shown in figure
n
, avoid
overlapping any of the individual wires during routing from the wall outlet.
At the Boiler end make the connections 27 CL+, 28 CL-, and 29 G+ if required.
For an external module refer to the installation documentation provided with
the specific option kit.
12.2.1.4.
Configuration
Signal
QAA74
Boiler
DC 12V G+
1
29
GND CL-
2
28
BSB CL+
3
27
12.2.2. UIN 235781 533901457 Outdoor Temperature Sensor
Refer to the QAC34 installation instructions, and the Boiler or External
module installation manual as required when carrying out the installation.
12.2.2.1. Location
Line No.
Parameter
Settings
Содержание STRATTON MK3 Series
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