UNIT DESCRIPTION AND TECHNICAL
UNIT DESCRIPTION AND TECHNICAL DAT
DATA
A
PREFACE
PREFACE
LARK
LARK
Rooftop Packaged Units are single packaged
Rooftop Packaged Units are single packaged units which are factory assembled, tested
units which are factory assembled, tested and shipped completely with
and shipped completely with
compressor
compressor, evaporator and
, evaporator and condenser coils, fans and controls. These
condenser coils, fans and controls. These packages are designed for
packages are designed for outdoor installation, and
outdoor installation, and
they may be used for cooling only or
they may be used for cooling only or cooling and heat pump.
cooling and heat pump.
The units are ideal for
The units are ideal for residential, commercial and industrial applications and are available in nominal
residential, commercial and industrial applications and are available in nominal cooling capacity from
cooling capacity from
9.9 kW to
9.9 kW to 188.5 kW. Quality design and construction make LARK air-cooled rooftop package units with he
188.5 kW. Quality design and construction make LARK air-cooled rooftop package units with hermetic scroll
rmetic scroll
compressors the preferred applications and easy
compressors the preferred applications and easy installation and maintenance. Operation range of outdoor temperature is
installation and maintenance. Operation range of outdoor temperature is
from -10
from -10
℃
℃
to 45
to 45
℃
℃
..
Rooftop packaged systems are unobtrusive, quiet, and designed to provide year round comfort – warming in winter and
Rooftop packaged systems are unobtrusive, quiet, and designed to provide year round comfort – warming in winter and
cooling in summer. LARK's wide product range offers a unit of
cooling in summer. LARK's wide product range offers a unit of performance capacity to suit small to
performance capacity to suit small to large packaged air
large packaged air
conditioner applications, e.g. offices, shops, motels, fast food outlets, restaurants, petrol stations, open plan office and work
conditioner applications, e.g. offices, shops, motels, fast food outlets, restaurants, petrol stations, open plan office and work
spaces, supermarkets, shopping malls and
spaces, supermarkets, shopping malls and auditoriums.
auditoriums.
Units are suited to high static pressure applications where large volume spaces are to be
Units are suited to high static pressure applications where large volume spaces are to be air conditioned. Long pipe and duct
air conditioned. Long pipe and duct
runs are
runs are possible enabling greater
possible enabling greater installation flexibility
installation flexibility..
This range of units has been developed to meet the
This range of units has been developed to meet the needs of typical applications. Should you have special requirements,
needs of typical applications. Should you have special requirements,
such as higher air
such as higher air flows or greater sensible duty units c
flows or greater sensible duty units contact your nearest LARK representatives. LARK engineers have
ontact your nearest LARK representatives. LARK engineers have
extensive experience in designing air
extensive experience in designing air conditioning equipment for specific applications.
conditioning equipment for specific applications.
86-531-88926116
86-531-88926116
FEATURES
FEATURES
Efficient.
Efficient.
These reverse cycle (heat pump) air conditioners provide one
These reverse cycle (heat pump) air conditioners provide one of the most efficient forms of heating you can
of the most efficient forms of heating you can invest
invest
in. For every 1 kW of power consumed, up
in. For every 1 kW of power consumed, up to 2.8 kW of heat is
to 2.8 kW of heat is generated. For every 1 kW of power consumed, up to
generated. For every 1 kW of power consumed, up to 3.1 kW
3.1 kW
of heat is generated. Each outdoor unit incorporates high efficiency scroll compressors. Heat exchange coils use high
of heat is generated. Each outdoor unit incorporates high efficiency scroll compressors. Heat exchange coils use high
efficient tube for better
efficient tube for better heat transfer.
heat transfer.
Performance.
Performance.
These systems have been designed and tested to perform in ambient conditions as low as
These systems have been designed and tested to perform in ambient conditions as low as -10°C and as high
-10°C and as high
as 45°C. For the models from LAAHP 25 to LAAHP 190 belt drive fan motors are used
as 45°C. For the models from LAAHP 25 to LAAHP 190 belt drive fan motors are used to match the supply air requirements.
to match the supply air requirements.
The smaller units( models from LAAHP 10 to LAAHP 20 )
The smaller units( models from LAAHP 10 to LAAHP 20 ) have 3 speed
have 3 speed direct drive fans for
direct drive fans for adjusting air flows.
adjusting air flows.
Durable.
Durable.
Our packaged systems are built tough to withstand all weathers. Their durable construction ensures a long life and
Our packaged systems are built tough to withstand all weathers. Their durable construction ensures a long life and
excellent return on your investment. The outdoor air coils' aluminum fins are epoxy coated for extra protection in corrosive
excellent return on your investment. The outdoor air coils' aluminum fins are epoxy coated for extra protection in corrosive
environments, e.g. salt laden sea air. Cabinets are constructed from high grade steel - polyester powder coated for all
environments, e.g. salt laden sea air. Cabinets are constructed from high grade steel - polyester powder coated for all
weather protection. External fasteners are stainless steel or galvanized type. Corrosion resistant drain trays are also
weather protection. External fasteners are stainless steel or galvanized type. Corrosion resistant drain trays are also
included.
included.
Insulation.
Insulation.
Indoor air sections are generously insulated to reduce condensation and contain noise.
Indoor air sections are generously insulated to reduce condensation and contain noise.
More Safe.
More Safe.
The refrigeration system includes a number of protection facilities, including: HP and LP switches, phase
The refrigeration system includes a number of protection facilities, including: HP and LP switches, phase
sequence relay, circuit breaker control etc.
sequence relay, circuit breaker control etc.
2
2
Economy.
Economy.
Some models feature the flexibility and economy of 2~4 stages operation. Compressors are progressively
Some models feature the flexibility and economy of 2~4 stages operation. Compressors are progressively
switched on only as they are needed. This has the ad
switched on only as they are needed. This has the added advantage of lowering start-up current.
ded advantage of lowering start-up current.
Economizer Option.
Economizer Option.
If the outdoor air heat
If the outdoor air heat content or temperature is below that of
content or temperature is below that of the return air, a fresh air damper opens
the return air, a fresh air damper opens
and the return air
and the return air damper closes to provide the
damper closes to provide the first stage of cooling. Operating costs are reduced as
first stage of cooling. Operating costs are reduced as the compressor(s) will
the compressor(s) will
only operate to provide more cooling if it is required.
only operate to provide more cooling if it is required.
