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Fig. 6-9 Installation of the damper
6.5 Installation of device to prevent snow
build-up and strong breeze
When installing an air-cooled heat pump chiller in a place with
heavy snow, it is necessary to take snow protection measures to
ensure trouble-free operation of the equipment.
Otherwise, accumulated snow will block the air flow and may cause
equipment problems.
(a) Buried in the snow
(b) Snow accumulated
on the top plate
( c ) Snow falling on the equipment
(d) Air inlet blocked by snow
wind with snow
(e) Equipment covered with snow
Fig. 6-10 Types of problems caused by snow
Anchor bolt
Nut
Ferrol
Damping device
6.5.1 Measures used to prevent problems
caused by snow
1) Measures to prevent build-up of snow
The base height should be as least the same as the predicted
snow depth in the local area.
Outdoor
unit
Fig. 6-11 Snow prevention base height
2) Lightning protection and snow protection measures
Check the installation site thoroughly; do not install the equipment
under awnings or trees or a place where snow is piled up.
6.5.2 Precautions for designing a snow cover
1) To ensure a sufficient air flow required by the air-cooled heat
pump chiller, design a protective cover to make the dust
resistance 1 mm H
O or less lower than the allowable external
2
static pressure of air-cooled heat pump chiller.
2) The protective cover must be strong enough to withstand the
snow weight and the pressure caused by strong wind and
typhoon.
3) The protective cover must not cause short circuit of air
discharge and suction.
10
Base height
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