Airwell K CassetteSeries, Service & Installation Manual

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GENERAL INSTALLATION INSTRUCTIONS
OF AIR CONDITIONERS
1. RECEIVING UNIT
Upon receipt, the unit should be carefully examined
for any damage which may have occurred in transit,
and such damage should be noted on the carrier’s
delivery documents.
It is the consignee’s responsibility to make any
subsequent claims upon the carrier or the respective
insurance company.
2. LIFTING UNIT
When slinging the unit care must be taken to prevent
rope damage to the paintwork or components. In
particular the drain connections on the indoor unit
must be avoided.
3. LOCATION
OUTDOOR UNIT
The unit must be installed on a firm level foundation,
of adequate strength to support its full operating
weight. Some form of vibration isolation such as
rubber waffle pads should be installed between the
unit and the supporting structure.
3.1 The unit must not be located where it will be
subjected to heavy downpour and must be
above ground level in areas that are prone to
stormwater flooding.
3.2 It must be high enough to permit good drainage
of defrost water and allow any heavy ice to fall
away from the coil during defrost cycle.
Minimum recommended height is 250mm above
ground level.
3.3 When locating unit give consideration to, and
locate unit as remote as possible from
neighbor’s sleeping areas to minimise noise, as
heat pump loads are greatest at night time.
3.4 Where prevailing winter winds are known, if
possible, position the outdoor coil away from the
winds to reduce defrost cycle time.
3.5 If possible, orient the unit outdoor coil towards
the morning sun. This increases efficiency in
heating and decreases the solar load on the unit
in the summer cooling cycle.
3.6 Service and air flow clearances must be allowed
as indicated on the unit dimension sheet. It
should be noted that major service may require
removal of the top panels. Particular attention
should be paid to avoiding obstructions to the
condenser air discharge which may result in
recirculation of the outdoor air.
3.7 The standard outdoor fans fitted to the units will
not accept any resistance to air flow.
Consequently, should it be necessary to duct
outdoor air to or from the unit, the ductwork
system (including entering and leaving
weatherproof louvres if fitted) must be negligible
pressure loss.
3.8 In addition to the service clearances noted on
the dimension sheet it is essential that provision
is made for adequate and safe service access.
INDOOR UNIT
The unit must be installed in a manner adequate in
strength to support its full operating weight.
3.9 The unit must be level to provide positive
drainage of condensate.
3.10 Minimum Clearance
•
Wall mounted split systems
100mm from ceiling
200mm from LH + RH sides
•
Floor mounted consoles
200mm from floor
200mm from LH + RH sides
DUCTED SYSTEMS
3.11 Where building regulations require an auxiliary
drip tray, it must be located under the unit
ensuring that the tray is adequately supported
on a suitable frame.
3.12 All electrical and ductwork connections to the
unit must be made via flexible connections to
prevent transmission of vibration
3.13 The indoor unit is not weatherproof and
protection from the weather MUST be provided
if it is installed outside. A separate weatherproof
enclosure is the recommended method of
weatherproofing.
3.14 Service clearance of 1 metre is required at the
blower and motor access panel.
4. DRAINAGE
The condensate drain must slope down continually
from the INDOOR unit’s drain pan.
DUCTED UNITS ONLY:-
INDOOR UNIT
Provision is made for the connection of a condensate
drain from the indoor section. It is essential that this
drain is adequately trapped (re. Fig. 1) as the negative
pressure caused by the unit’s supply air fan, may
prevent proper drainage resulting in flooding of the unit
and adjacent area.
Run condensate drain to a suitable disposal point,
preferably a stormwater drain.
Where building regulations demand an auxiliary drip
tray, this must be located first ensuring the tray is
adequately supported on timber bearers or a suitable
frame.
OUTDOOR UNIT
During the heating cycle ice forms on the surface of
the outdoor coil. This ice is periodically removed during
the unit’s defrost cycle and fairly large quantities of
water (melted ice) will be dumped onto the area
beneath the unit. Where the unit is mounted on a roof
this should not be a problem. However, where the free
run off of this water is not acceptable, the supplied
drain connection must be connected to the unit and
the drain pipe must slope down continually from the
unit.
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