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Compatibility
The H3747 Smart Programmer is compatible with most heating control systems and is
ideal for compatible system boilers using spring return valves. It can also work with
combination boilers as well as heat pumps requiring On/O control.
Shipped with a standard 9-pin back plate, it can easily replace Centaurplus and
Serviceplus time switches and programmers requiring minimum of wiring changes.
Failure to observe precautions may result in fatal injury and equipment
damage
Hazard of electrical shock or explosion
Double insulation protection
6
RF
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