Hamworthy STRATTON MK3 Series Installation, Commissioning And Servicing Instructions page 143

12.2.3. UIN 235782 Offset Adjustable Room Sensorr
12.2.3.1. Location
12.2.3.2. Fixing
12.2.3.3. Wiring
12.2.3.4. Configuration
12.2.4. UIN 235782 Offset Adjustable Room Sensor
06.02.2023
Refer to the QAA55 installation instructions, and the Boiler or External module
installation manual as required when carrying out the installation.
Determine the optimum location as recommended in the QAA55 installation
instructions.
For operation a 2-core cable is only required to be run between the Room
Sensor and the associated Boiler or External module.
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 QAA55 using a
2-wire connection requires 24mA.
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.
Follow the fixing instructions as detailed on the box.
At the QAA55, route and make the connections as shown, avoid overlapping
any of the individual wires during routing from the wall outlet.
At the Boiler end make the connections 27 CL+, 28 CL-.
Signal
BSB CL+
GND CL-
For an external module refer to the installation documentation provided with
the specific option kit.
Line No. Parameter
Refer to the QAZ36 installation instructions, and the Boiler or External module
installation manual as required when carrying out the installation.
STRATTON MK3 - Installation, Use and Maintenance
QAA55 Boiler
1 27
2 28
Settings
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