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Outdoor unit drain work
General area
While the air to water heat pump is operating in heating mode, ice
can accumulate on the surface of the condenser.
To prevent ice from growing, the system occasionally enters a
defrost mode and the ice on the surface thaws off.
Water dripping from the condenser is guided through the drain
holes to prevent ice formation inside the base plate at subzero
temperatures.
• In case there is not enough space for natural drainage from the
outdoor unit, additional drain work is required.
Follow the description as per below:
– Provide a minimum of 150 mm of free space to the floor.
– Insert the drain plug into the hole at the bottom of the
outdoor unit.
– Connect the drain hose to the drain plug.
– Make sure dirt and debris cannot block the drain (hose).
Clean the base plate whenever needed.
– For the remaining holes (that do not have the drain plug),
insert the drain cap
– Make sure that the water dripping from the drain hose runs
away correctly and safely.
≥ 150 mm
WARNING
• If the drainage is not adequate, it can lead to stagnant water
and ice build-up, causing system performance issues and
possible damages.
Drain plug x 1ea
212.5 mm
1 Prepare a water drainage channel around the foundation, to
drain waste water from around the unit.
2 If the water drainage from the unit is inadequate, please raise
the unit on construction concrete blocks, etc. (the height of the
construction should be at least 150 mm).
3 If you install the unit on a frame, please install a slanted
waterproof plate within 150 mm of the underside of the unit
to prevent water from plashing against the bottom plate from
below.
4 When installing the unit in a place frequently exposed to snow,
pay special attention to elevating the foundation as high as the
average snow height plus the additional required 150 mm.
5 If you install the unit on a wall support bracket, please install
drainage pipework. In order to avoid the drain water from
dripping on the floor potentially creating a slippery surface or
an ice layer under freezing conditions.
※ Please securely mount the outdoor unit before connecting the
water piping.
Drain hole Φ 20
13 mm
English
13
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