AM, EM, AQ, BA, ASW - IOM
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5.6.3 BoxAir / BoxAir Inverter multi-circuits, charging pump DHW
Universal scheme for multi-circuit heating systems with accumulation vessel. Local regulation
can be applied here for 100% of heating output. The volume of the accumulation vessel is
determined for 15 l/kW of heating output of the heat pump for A7W35. Heating of DHW is
provided by a charge circulation pump from the accumulation vessel of the heating system.
Regarding the type of DHW tank follow instructions in Chapter “Preparation of Domestic Hot
Water“.
tap water inlet / DHW outlet
DHW
venting valves
charging pump
mixing HC
venting valves
pump HC
safety valve
DN25/2.5bar
filtrball
flexible fittings
expansion vessel
heating szstem buffer with integrated manifold
DHW tank with heat exchanger
BoxAir / BoxAir Inverter machinery room for multiple circuits and charging DHW
5.6.4 Heating system charge for BoxAir and BoxAir Inverter
Antifreeze mixture of propylene glycol with freezing point -20°C is required, due to outdoor
installation. When lower (or higher) minimum ambient temperatures during winter are supposed,
adjust freezing point of the mixture.
5.6.5 Venting the system for BoxAir a BoxAir Inverter
BA units require proper venting, therefore venting valve is installed on the top of inbuild auxiliary
heater.