Danfoss Central Heating Controls

The New Danfoss Si programmer features a service interval timer

- allowing the installer to select a 'service due date' for the boiler. This can be set at between 28 days and 366 days from the current date and will cause the unit to alarm prior to the service due date as a warning.

A range of basic electro-mechanical time controls

for heating and domestic hot water systems, widely

favoured for their simplicity of operation. They

have been particularly popular for Local Authority

specification.

All models feature a 24-hour clock with colour

coded On and Off tappets, which are simply moved

to the desired time settings on the dial to provide

up to 2 on and 2 off periods per day.

The control module plugs in to a separate wallplate/

terminal block making installation and servicing as

A range of general-purpose timeswitches and mini-programmers, which provide either a single output circuit (103 timeswitch range) or linked outputs for water and heating (102 mini-programmer range).

Both ranges include easy to use 24-hour electromechanical models, plus two electronic models, which offer 5/2 day or 24 hour and 7-day or 5/2

day operation.

All models fit the GP wallplate and have an identical wiring configuration, allowing systems to be upgraded without the need for rewiring.

The electro-mechanical 102 programmer and 103 timeswitch have a thumbwheel, which allows early selection of future switching operations.

All models show clearly the current state of the output.

The electronic units have extra programmes and overrides, and incorporate a battery to provide back up of time and programme.

The SET range of time controls has been designed with simplicity of programming and use in mind.

The range includes an electronic timeswitch, a mini-programmer and a programmer, as well as an electro-mechanical programmer.

All models offer 24 hour control and are designed to fit the British Gas Standard Wall plate used by earlier SET models and some models from the Horstmann range.

All models have LED status indicators and have easy to use rocker switches for programme selection.