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System description
'13 • HM-T-193
External heat source
Wood
Function
By connecting a wood-red boiler via accumulator tank to indoor
unit or tank, hot water and heat to the house can be produced by
it.
If there is no heat in the accumulator tank, heat and hot water
are produced by the heat pump or by internal electric heater
according to the selected operating mode.
The wood installation must have an external automatic control
device (KF).
Additional temperature sensor should be placed on BT24 and
KF should control the wood red boiler as follows,
P1 should stop when BT24 senses 65 °C at maximum.
P1 shouldn’t start until T1 reaches 55 °C at minimum.
V1 must control the supply temperature at 65°C or lower.
Accumulators and primary system design are dimensioned by
the boiler supplier. Ensure that there is sufficient volume to
prevent overheating.
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