Instruction manual WWH-EC and WWH-LT Air heater
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3.2 Water connections
Connections for hot water supply and return (two times ¾ inch or two times 1 inch) are marked with a red
and a blue sticker. Red is water supply and blue is water return. Do not twist these connections, the
heater will not give the desired output.
The WWH is not provided with a standard venting. There is the possibility to place one when it is desired.
Prevent mechanical tension on the connections, this will cause leakage.
Warning: Prevent damage to the heater,
hold the connections with pliers to avoid
twisting of welded parts of the
connections. Do not put excessive force!
Internal welds may break and cause
leakage.
