Precautions About Installation In Regions With Snowfall And Cold Temperatures - Toshiba RAS-4M23SACV-E Installation Manual

Precautions about Installation in Regions with Snowfall and Cold Temperatures

• Do not use the supplied drain nipple for draining water. Drain the water
from all the drain holes directly.
• To protect the outdoor unit from snow accumulation, install a holding
frame, and attach a snow protection hood and plate.
* Do not use a double-stacked design.
CAUTION
1. Install the outdoor unit in a location where there are no obstructions near its air intake or air outlet.
2. When the outdoor unit is installed in a place that is always exposed to strong winds like on the coast or on a high story of a
building, secure the normal fan operation using a duct or a wind shield.
3. Especially in windy areas, install the unit to prevent the admission of wind.
4. Installation in the following places may result in trouble. Do not install the unit in such places.
• A place full of machine oil.
• A saline-place such as the coast.
• A place full of sulfide gas.
• A place where high-frequency waves are likely to be generated, such
as from audio equipment, welders, and medical equipment.
Draining the water (heat pump models only)
A hole is provided on the base plate of the outdoor unit to ensure that the defrost water produced during heating operations is drained
off efficiently.
When the outdoor unit is to be installed in an area with a moderate
climate
• Allow the water in the outdoor unit to drip onto the ground.
• If a centralized drain is required, which is the case when the unit is installed on a
balcony or against a wall, follow the steps below.
• When a drain pipe is to be used to drain the water
• Use a drain pan to catch the defrost water, and drain the pan.
• Use a pipe made of hard PVC with a nominal diameter of 25 mm inside
diameter for the drain pipe.
Tips when using a drain pan and elbow
• When using a drain pan, check its dimensions before deciding where the
outdoor unit is to be installed.
• When the elbow supplied is to be used, be advised that its dimensions are as
shown in the figure. Ensure that the foundation does not protrude beyond
where the elbow and the part of the hose connected to it are to be installed.
• When draining off the water using a drain nipple
When a drain hose is to be used to drain the water, install the drain nipple and
water-proofing rubber cap shown in the figure, and use a commercially available
drain hose (16 mm inside diameter). Tightly seal the knock-out holes and screw/
thread areas using a silicon adhesive, etc. to ensure that there is no water
drippage. Under some conditions, condensation may form on the base plate and
drip down. When all the defrost water is to be drained off using a centralized
drain, use the drain pan.
Front
Snow accumulation line
Anchor
bolts
Outdoor unit
Foundation
d Water-proofing
rubber cap
7
Snow protection plate
Snow protection hood
Install at least 50 cm
above the snow
accumulation line.
At least
50 cm
Holding frame
Strong
wind
Direction of air
blown out
Drain port
Outline of
Outline of outdoor
drain pan
unit
Drain pan
Elbow (with a 40 mm
outside diameter)
30
58
c Drain nipple
EN