WHHRM300DC & WHHR400DC 2
2.1 Ducts connection options
Chapter 2
Version
The WHHRDCs are available in two versions as regards venti
lation capacity:
• “WHHRM300DC” has a ventilation capacity of up to 300 m
3
/h
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• “WHHR400DC” produces a maximum of 400 m
3
/h at 150
Pa resistance in the duct system.
Both versions are available with or without a bypass unit.
They are ready to be hard wired to the mains and
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side of the appliance.
The WHHRDCs are available in three versions as regards ducts
connections:
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For pictures and dimensions of these appliances, see sections
5.6.1 & 5.6.2.
2.2 Bypass
The appliance can be supplied ex factory with a bypass, which
can be used to interrupt the heat recovery if desired, to supply
fresh, cool outside air. The information and diagram in these
installation instructions refer to the bypass that is supplied ex
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sliding grate that shuts off the supply air through the exchanger.
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mount a sliding grate.
The operation and preconditions of the bypass control are ex
plained in more detail in section 4.3. The bypass unit that is
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