■ Use ventilation elements for controlled ventilation of rooms, so as to
avoid negative pressure (see pages 4 and 14).
■ Install extract and expelled air lines in the immediate vicinity of the
heat pump either horizontally or at a slight angle to the extract cover.
This way the condensate is routed via the heat pump to the sewer
system (see page 21).
■ Insulate extract air lines where they run through unheated rooms.
■ To prevent condensate forming always insulate expelled air lines.
■ To prevent cold air entering lines that draw expelled air outside when
the system is not in use in winter, install low resistance check valves
(on site).
■ Install ventilation pipes, wall outlets and connections with the
Vitocal 160-A (see page 20) using anti-vibration mounts.
■ To prevent flow noise and increased energy use through pressure
losses, never reduce the diameters of the pipes directly connected
to the heat pump. A reduction may only be made if the air flow is
split, e.g. via tees.
■ The max. permissible total pressure drop Δp
total
for all components
incl. wall outlets in the pipework is 95 Pa.
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