09
Anchor bolt
Nut
Ferrol
Damping device
Fig. 6-8 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.
(e) Equipment covered with snow
(d) Air inlet blocked by snow
(b) Snow accumulated
on the top plate
(c) Snow falling on the equipment
(a) Buried in the snow
Monsoon
Fig. 6-9 Types of problems caused by snow
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
Base height
Fig. 6-10 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
2
O or less lower than the allowable
external 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
