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DIL switch numbers 7 and 8 should
Ÿ
be set as diagram opposite.
For Gas boilers set the LC setting to
Ÿ
6 cycles per hour.
(Default setting)
Ÿ
For Oil boilers set the LC setting to 3
Ÿ
cycles per hour.
For Electric heating set the LC
Ÿ
setting to 12 cycles per hour.
Thermostat Specification
Power Supply
Contact rating
Temperature accuracy
Contact type
Dimensions
Pollution control
Design standard
Temperature range
Rated Impulse voltage
Enclosure protection
Switch positions for
different LC settings
HRT4-B
2 x AAA alkaline batteries
3 (1)amp at 230v AC
+/- 0.5°C
Micro disconnection
Volt free changeover
86mm x 86mm x 36.25mm
Degree2
BS EN/EN (60730 – 2-9)
HRT4-B 5-30°C
Cat 2 - 2500v
IP30
CYCLE
23
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