The regulator for the weather compensation system can be mounted in the boiler control system on
MULTI-HEAT 2.5 and 4.0 (but not on MULTI-HEAT 1.5). Electrical connection is traditionally carried
out without a Multi-plug, by means of the bottom-side's terminal strips.
By this means, it is possible to achieve a regulation of the flow temperature in comparison with the
outside temperature, as well as a possibility for programming, so that it is possible to turn down the
temperature during periods when this is of no use.
As a special precaution against a false alarm on alarm 1, min. output should not be set lower than 50% of
maximum. The pause interval should also be reduced for intermittent firing. The boiler is highly efficient
and well insulated.
3 Installation instructions
3.1 Standard equipment and optional extras
Standard equipment
User guide
Cleaning brush
Ash scoop
Cleaning handle
Augur extension for grain
Agitator (for model F)
2 ash boxes (only for MH 2.5)
Optional extras
Agitator for 600 litre magazine
Pressure tank for water sprinkler (protection against back-
burning)
Draft limiter for smoke tube
Draft limiter for chimney
Safety copper heat exchanger for thermal outflow safety device
Cover with 2" collar for electric heating cartridges for MH 1.5
and 2.5
Lambda control
Automatic loading unit for wood pellets and grain type RSE
3.1.1 Standards and regulations
Please observe guidelines, and local and national requirements.
MULTI-HEAT boilers are designed and approved for hot water heating systems with permissible outflow
temperatures of up to 95°C.
Running-dry protection (optional extra)
Closed heating-systems can be fitted with running-dry protection. The running-dry protection is
connected to terminal strip J2, terminal 3 in series with the overheating thermostat B12. See wiring
diagram.
The running-dry protection should be fitted directly to the outflow pipe such that it cannot be blocked.
3.1.2 Who may install
It is the responsibility of the person installing the system that he or she has the necessary training and
authorisation in order to install the boiler.
3.2 Arrangement conditions - air supply
