Installation manual
6
ERLQ006~008BBV39
Outdoor unit for air to water heat pump
4PW68003-1A – 03.2011
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Depending on radio wave conditions, electromagnetic
interference may still occur even if installed more than 3 m away.
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In coastal areas or other places with salty atmosphere of sulfate
gas, corrosion may shorten the life of the outdoor unit.
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Since drain flows out of the outdoor unit, do not place anything
under the unit which must be kept away from moisture.
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Select an installation site where the following conditions are
satisfied and that meets with your customer's approval.
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Places which are well-ventilated.
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Places where the unit does not bother next-door neighbours.
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Safe places which can withstand the unit's weight and
vibration and where the unit can be installed level.
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Places where there is no possibility of flammable gas or
product leak.
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The equipment is not intended for use in a potentially
explosive atmosphere.
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Places where servicing space can be well ensured.
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Places where the indoor and outdoor units' piping and wiring
lengths come within the allowable ranges.
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Places where water leaking from the unit cannot cause
damage to the location (e.g. in case of a blocked drain pipe).
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Places where the rain can be avoided as much as possible.
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Do not install the unit in places often used as work place.
In case of construction works (e.g. grinding works) where a
lot of dust is created, the unit must be covered.
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Do not place any objects or equipment on top of the unit (top
plate).
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Do not climb, sit or stand on top of the unit,
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Be sure that sufficient precautions are taken, in accordance
with applicable legislation, in case of refrigerant leakage.
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When installing the unit in a place exposed to strong wind, pay
special attention to the following.
Strong winds of 5 m/sec or more blowing against the outdoor
unit's air outlet causes short circuit (suction of discharge air),
and this may have the following consequences:
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Deterioration of the operational capacity.
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Frequent frost acceleration in heating operation.
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Disruption of operation due to rise of high pressure.
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When a strong wind blows continuously on the face of the
unit, the fan can start rotating very fast until it breaks.
Refer to the figures for installation of this unit in a place where
the wind direction can be foreseen.
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Install a baffle plate on the air suction side of the outdoor unit
and set the outlet side at a right angle to the direction of the
wind:
1 Baffle plate
2 Strong wind
3 Discharge air
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Prepare a water drainage channel around the foundation, to
drain waste water from around the unit.
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If the water drainage of the unit is not easy, please build up the
unit on a foundation of concrete blocks, etc. (the height of the
foundation should be maximum 150 mm).
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If you install the unit on a frame, please install a waterproof plate
within 150 mm of the underside of the unit in order to prevent the
invasion of water from the lower direction.
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When installing the unit in a place frequently exposed to snow,
pay special attention to elevate the foundation as high as
possible.
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If you install the unit on a building frame,
please install a waterproof plate (field
supply)(within 150 mm of the underside of
the unit) in order to avoid the drainwater
dripping. (See figure).
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Make sure that the unit is installed level.
5.2.
Selecting a location in cold climates
Refer to
"3.4. Model identification" on page 4
.
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To prevent exposure to wind, install the outdoor unit with its
suction side facing the wall.
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Never install the outdoor unit at a site where the suction side
may be exposed directly to wind.
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To prevent exposure to wind, install a baffle plate on the air
discharge side of the outdoor unit.
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In heavy snowfall areas it is very important to select an
installation site where the snow will not affect the unit and set
the outlet side at a right angle to the direction of the wind:
1 Construct a large canopy.
2 Construct a pedestal.
Install the unit high enough off the ground to prevent
burying in snow.
3 Strong wind
4 Discharge air
1
2
3
2
NOTICE
Units cannot be installed hanging from ceiling or stacked.
NOTICE
When operating the outdoor unit in a low outdoor ambient
temperature, be sure to follow the instructions described
below.
1
2
3
3
4
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