TemperZone ISD 380-950 Series Instruction manual

Cooling Capacity
37.6kW - 94.9kW
Heating Capacity
35.9kW - 90.1kW
Ducted Split System Air Conditioners
Technical Data
ISD 380, 465, 570, 670, 840, 950

Page 2
Ducted Split System Air Conditioners
Contents
ISD 380–950
General 3
Applications 4
Air Flow Selection 4
Features
Refrigerant R410A 4
Economical 4
Efficient 4
Quiet 4
Performance 4
Durable 4
Low Maintenance 4
Soft Starting 4
Control Option 5
Insulation 5
Self Diagnostics 5
Optional Equipment
Outdoor Unit 5
Indoor Unit 5
Safety Features 5
Compressor 5
Refrigeration Piping 5
Wiring 5
Plug Fan Advantages 6
Digital Version
Digital Scroll Compressor 6
Extended Capability 6
PERFORMANCE DATA
Cooling Capacity (kW) 7
Indoor Air Flow Correction Factors
@ nominal conditions
8
Pipe Length Capacity Loss 8
Heating Capacity (kW) 9
Air Handling 10
Sound Levels 12
DIMENSIONS (mm)
ISD Indoor Units 14
OSA Outdoor Units 18
SPECIFICATIONS 21

Page 3
Ducted Split System Air Conditioners
ISD 380–950 Series
The ISD indoor unit, together with its associated OSA
outdoor unit, provides a reverse cycle (heat pump)
split system air conditioner designed and developed
to comply with and exceed AS/NZS 3823 specified
conditions.

Page 4
Applications
These units have been specifically developed for air conditioning of
commercial premises, e.g. offices, motels, shops and restaurants
Ducted Split System Air Conditioners
ISD 380–950 Series
AIR FLOW SELECTION
If the air returning to the indoor coil is regularly expected to be above
50%RH, then the coil face velocity should be limited to be
2.5 m/s or less.
High humidity levels can occur in tropical or subtropical conditions,
and/or when heavily moisture laden fresh air is introduced.
Consideration must always be given to selecting an air flow and face
velocity that avoids water carry-over problems.
Applications using full or high proportions of fresh air should be
referred to your nearest temperzone sales office to establish the
correct selection of units.
Refrigerant R410A
Each complete system uses refrigerant
R410A which has a zero ozone depletion
potential.
Economical
These ISD/OSA systems have two
independent refrigeration circuits to provide
the flexibility and economy of two stage
operation, i.e. utilising one or two circuits as
conditions vary, plus the advantage of
staggered starting.
Efficient
Each outdoor unit incorporates a high
efficiency scroll compressor. ISD 380 indoor
units include high efficiency EC motors.
Heat exchange coils incorporate inner
grooved (rifled) tube for better heat transfer.
Quiet
ISD 380 models: Each integral high
efficiency electronically commutated (EC)
motor can vary from zero to full speed. This
allows slow ramp up with no sudden noise
change. The motor can be controlled to
have the best air flow for the ducting and
requirements as well as used for
de-humidifying the space.
Outdoor noise is a function of how hard the unit
needs to work. When the outdoor unit is not
running at maximum capacity in mid- season
the outdoor fan speed and noise reduces.
The compressor is isolated in a built-in, insulated
compartment to minimise noise. The indoor unit
is also insulated for noise attenuation.
Performance
Use of forward curved fan enables fine
tuning of the indoor unit to match the supply
air requirements.
ISD 380KB-P models: Use of backward
curved plug fan enables fine tuning of the
indoor unit to match higher static pressure
supply air requirements.
EC motor fans have a fully integrated speed
control that enables soft starting. Fan speed
can be stepped to your own requirements
or continuously variable using a 0–10V DC
control signal.
The system includes a temperature sensing
head pressure control which enables the
system to compensate for outdoor ambient
temperatures below 20°C on cooling cycle,
and above 15°C on heating cycle.
Durable
The indoor and outdoor coil fins are epoxy
coated for extra protection in corrosive
environments, e.g. salt laden sea air. The
outdoor unit’s cabinet is constructed from
high grade galvanised steel - polyester
powder coated (grey) for all weather
protection (IP 44). External fasteners are
stainless steel. Heat exchange coils
comprise aluminium plate fins on
mechanically expanded rifled copper tube.
Coil protection guards are supplied. The
indoor unit’s cabinet is constructed from
high grade galvanised steel and also includes
a polyester powder coated drain tray.
Low Maintenance
EC motor models* - commissioning and
maintenance costs are reduced through use
of a fan that requires no pulley and belt
adjustments or changes like traditional fans.
FE ATURES

Page 5
Ducted Split System Air Conditioners
ISD 380–950 Series
Soft Starting
EC motor models* - EC motors are soft
starting therefore have none of the
problems associated with high in rush
current.
Control Option
EC motor models* - Fixed and stable air
flows can be achieved through use of a
differential pressure transducer and
controller (supplied by others) to
compensate for varying duct static
pressures caused by dirty filters or
modulating dampers. Commissioning is also
made easier. The system is set up for the EC
motor to be controlled variably by a 0–10
volt DC signal that can be supplied either by
a BMS system, a sophisticated controller or
temperzone’s optional TZT-100 Controller;
the optional Signal Isolator will be required in
this instance for ISD 380KBY models.
Systems’ using UC6 controller* are BMS
compatible with multi-unit control possible
– either via digital and analogue signals or via
Modbus. Refer to temperzone for protocols
available.
Insulation
Closed cell foam insulation has been used in
the indoor unit’s cabinet to ensure no
particles are introduced into the air stream.
The insulation is foil faced and meets fire
test standards AS 1530.3 (1999) and BS 476
parts 6 & 7.
Self Diagnostics
Systems that includes a controller (UC6)
have a 7 segment LED display to indicate
faults and running conditions. Many
operating status conditions (including
history) can be determined, without gauges,
simply by using the optional UC6 Service
Interface graphical display tool.
Note: OSA 870/950 use OUC4 controller.
OPTIONAL EQUIPMENT
Outdoor Unit:
UC6 Service Interface tool (OSA 310–670 only)
Indoor Unit:
1. Vertical supply air configuration.
2. Filters - EU4/G4 rated.
3. temperzone TZT-100 Room T/stat, or SAT-2 (24V) Controller kit
(for non-digitals).
4. Signal isolator (Item no. 201-000-129) for using EC motors
in a 0–10V DC continuously variable speed mode on
ISD 380KBY models.
SAFETY FEATURES
1. HP and loss of refrigerant protection.
2. Anti-rapid cycle timer and internal overload for compressor
protection.
3. Circuit breaker control circuits.
4. Time-and-temperature controlled electronic de-ice switch
prevents icing up of the outdoor coil during heating cycle.
5. Frost protection on cooling cycle.
6. Sensor fault indication.
7. Compressor minimum run time to ensure oil return.
8. Crankcase heater prevents liquid refrigerant condensing in the
compressors during the 'off' cycle.
9. Phase rotation protection device.
10. 24V control circuit
COMPRESSOR
Each high efficiency scroll type compressor is hermetically sealed,
quiet running and supported on rubber mounts to minimise
vibration.
REFRIGERATION PIPING
The standard unit allows for a line length up to 60 m or more ; refer
specifications table pages 19 & 20.
Max. height separations between units are:
Outdoor unit above indoor unit: 20m
Outdoor unit below indoor unit: 20m.
Each OSA is shipped from the factory with a charge of R410A
refrigerant sufficient for a 10m line length. Liquid and suction service
valves are provided. Accurator expansion devices control the flow of
refrigerant. The matched indoor unit is shipped with a holding charge
of nitrogen. Both units have brazed pipe connections.
WIRING
The electrical supply required is:
3 phase 380–415 V a.c. 50 Hz with neutral and earth.
The compressor crankcase heater requires a 24 hour power supply.
A control panel, located in each outdoor unit, is fully wired ready to
accept the main power supply. Each system complies with the
requirements of the Regulatory Compliance Mark (RCM) for
electrical safety (AS/NZS 60335.2.40) and EMC (AS/NZS CISPR.14).
* Refer Specification tables (p.19/20) to identify
applicable models

Page 6
Ducted Split System Air Conditioners
ISD 380–950 Series
Plug Fan Advantages
The ISD 380/570/670 KB-P models with EC motor and backward
curved plug fan design have the following advantages:
- higher static pressure performance (refer page 4)
- quieter than conventional fan (refer page 3); a large aperture
supply air spigot reduces exit velocities and therefore less noise
down ductwork. Each EC motor can vary from zero to full speed.
This allows slow ramp up with no sudden noise change.
- lower installation cost due to a large supply air spigot which
lessens the need for duct transitions.
- EC motors are soft starting therefore have none of the problems
associated with high in-rush current.
- commissioning and maintenance costs are reduced through
use of a fan that requires no pulley and belt adjustments or
changes like traditional fans.
- fixed and stable air flows can be achieved through use of a
differential pressure transducer and controller (supplied by
others) to compensate for varying duct static pressures caused
by dirty filters or modulating dampers. Commissioning is also
made easier.
- the system is set up for the EC motor to be controlled variably by
a 0–10 volt DC signal that can be supplied either by a BMS
system, a sophisticated controller or temperzone's optional
TZT-100 Controller.
- significant power savings are possible by slowing the fan during
low occupancy or after hours (75% airflow ≈55% power use).
Digital Version
Digital Scroll Compressor
A digital version of the some outdoor units (OSA 380) is available
that includes one fixed and one digital compressor. This provides
an enhanced variable capacity ability that enables closer control
of room temperature. Digital compressors have proven very
reliable because of their design simplicity. Electrical harmonic
noise is very low.
Extended Capability
Digitals are particularly suitable for applications requiring full or
high proportions of fresh air, VAV, close control and supply air
temperature control.

Page 7
COOLING CAPACITY (KW)
Total = Total Capacity (kW).
Sens. = Sensible Capacity (kW).
E.A.T. = Entering Air Temperature .
= Nominal Capacity (kW).
Ducted Split System Air Conditioners
Performance Data
Models Indoor Fan
Indoor coil
E.A.T. Outdoor coil entering air temperature °C D.B.
Indoor Unit
Outdoor Unit
Air
l/s
W.B.
°C
D.B.
°C
23 27 31 35 39 43
Total Sens. Total Sens. Total Sens. Total Sens. Total Sens. Tot al Sens.
ISD 380KB-P *
OSA 380 2100
15 21 36.4 28.5 35.9 28.7 34.9 28.2 33.2 27. 3 31.1 25.8 28.3 23.8
17 23 38.3 28.1 37.9 28.1 36.8 27.7 35.2 26.8 33.0 25.4 30.3 23.6
19 27 40.3 32.2 39.8 32.2 38.7 31.8 37.1 30.8 34.9 29.3 32.2 27.4
21 31 42.2 38.1 41.7 38.2 40.7 37.7 39.1 36.6 36.8 35.0 34.1 32.8
ISD 380KBY
OSA 380 2100
15 21 36.8 29.1 36.4 29.1 35.3 28.6 33.7 27.6 31.5 26.1 28.7 24.1
17 23 38.8 28.5 38.4 28.5 37. 3 28.0 35.7 27.1 33.5 25.8 30.7 23.9
19 27 40.8 32.6 40.3 32.7 39.3 32.2 37.6 31.2 35.4 29.7 32.6 2 7.7
21 31 42.8 38.6 42.3 38.7 41.2 38.2 39.6 37.1 37.4 35.5 34.6 32.2
ISD 465KB
OSA 465 2550
15 21 43.7 34.6 43.2 34.5 41.9 33.9 40.0 32.8 37.4 31.0 34.0 28.6
17 23 46.1 33.8 45.5 33.8 44.2 33.2 42.3 32.2 39.7 30.5 36.4 28.3
19 27 48.4 38.7 47. 8 38.7 46.5 38.2 44.6 37.0 42.0 35.3 38.7 32.9
21 31 50.7 45.8 50.1 45.9 48.9 45.3 46.9 44.0 44.3 42.0 41.0 39.4
ISD 570KB-P *
OSA 570 3100
15 21 55.5 43.9 54.8 43.8 53.2 43.1 50.8 41.6 47.4 39.3 43.2 36.3
17 23 58.5 42.9 5 7.8 42.9 56.2 42.2 53.7 40.8 50.4 38.8 46.2 36.0
19 27 61.4 49.1 60.7 49.2 59.1 48.5 56.6 47.0 53.3 44.8 49.1 41.7
21 31 64.4 58.2 63.6 58.3 62.0 57. 5 59.6 55.9 56.3 53.4 52.1 50.0
ISD 570KB
OSA 570 3100
15 21 55.1 43.5 54.4 43.5 52.8 42.7 50.4 41.3 47.0 39.0 42.9 36.0
17 23 58.0 42.5 5 7. 3 42.5 55.7 41.8 53.2 40.5 50.0 38.5 45.8 35.7
19 27 60.9 48.8 60.2 48.8 58.6 48.1 56.1 46.6 52.9 44.4 48.7 41.4
21 31 63.9 57.7 63.1 57. 8 61.6 57.0 59.1 55.4 55.8 53.0 51.6 49.6
ISD 670KB-P *
OSA 670 3600
15 21 64.3 50.8 64.4 50.7 61.6 49.8 58.7 48.1 54.9 45.5 50.0 42.0
17 23 67.7 49.6 66.8 49.6 65.0 48.8 62.1 47. 3 58.3 44.9 53.4 41.6
19 27 71.1 56.9 70.2 56.9 68.4 56.1 65.5 54.4 61.7 51.8 56.8 48.3
21 31 74.5 6 7. 3 73.6 67.4 71.8 66.5 68.9 64.6 65.1 61.8 60.2 5 7.8
ISD 670KB
OSA 670 3600
15 21 64.7 51.1 63.9 51.1 62.0 50.2 59.1 48.5 55.3 45.8 50.4 42.3
17 23 68.1 50.0 67. 3 50.0 65.4 49.2 62.6 47.6 58.7 45.2 53.8 41.9
19 27 71.6 5 7. 3 70.7 57. 3 68.9 56.5 65.9 54.8 62.1 52.2 5 7. 2 48.6
21 31 75.0 67.8 74. 2 6 7. 9 72.3 67.0 69.4 65.1 65.5 62.2 60.7 58.2
ISD 840KB
OSA 840 4500
15 21 84.9 58.6 83.3 57. 5 80.6 55.9 7 7. 9 54.8 75.4 53.7 71.7 52.6
17 23 89.4 63.0 87.0 61.8 80.6 60.6 81.3 59.4 78.9 58.2 74.8 5 7.6
19 27 93.6 70.0 90.8 68.6 87.7 67. 3 84.7 66.0 82.1 65.3 7 7. 9 64.7
21 31 98.2 76.2 95.1 74.8 91.6 74.1 88.9 72.6 86.3 71.9 82.7 71.2
ISD 950KB
OSA 950 5000
15 21 95.1 67.4 93.4 66.1 90.3 64.2 87. 3 63.0 84.4 61.7 80.3 60.5
17 23 100.2 72.4 97.4 71.0 90.3 69.7 91.1 68.3 88.3 66.9 83.8 66.2
19 27 104.8 80.4 101.7 78.9 98.2 7 7.4 94.9 75.9 92.0 75.1 8 7. 3 74.4
21 31 110.0 87.6 106.6 86.0 102.6 85.1 99.6 83.5 96.6 82.6 92.6 81.8
Note: Capacities are gross and do not include allowance for fan motor heat loss. Capacities
are for close coupled systems. Interconnecting pipework will reduce capacity.
An optional Outdoor Unit fan speed controller is available and is recommended where cooling
is required in below 20°C ambient conditions for long periods of time.
See over for Indoor Air Flow Correction factors >
* EC Plug fan version

Page 8
Ducted Split System Air Conditioners
Performance Data
PIPE LENGTH CAPACITY LOSS
On Cooling Cycle due to Pressure Drop
Note: Loss percentage is approximate only. No allowance made for vertical piping.
System
Performance Loss per additional 10m
beyond first 5m.
Suction
Pipe Size OD
Additional Pipe Length to allow per Bend
Long 90° Radius (2 x pipe dia.)
ISD 380 / OSA 380 2.1 % 22 0.50 m
ISD 465 / OSA 465 2.1 % 22 0.50 m
ISD 570 / OSA 570 1.5 % 28 0.61 m
0.7 % 35 0.76 m
ISD 670 / OSA 670 1.5 % 28 0.61 m
0.7 % 35 0.76 m
ISD 840 / OSA 840 1.0 % 35 0.76 m
0.8 % 41 0.80 m
ISD950 / OSA 950 1.0 % 35 0.76 m
0.8 % 41 0.80 m
INDOOR AIR FLOW CORRECTION FACTORS @ NOMINAL CONDITIONS
Indoor Air Flow (%)
-20 -10. Rated +10
Total Capacity 0.95 0.975 1.0 1.025
Sensible Capacity 0.89 0.950 1.0 1.050

Page 9
HEATING CAPACITY (KW)
G = Gross Heating Capacity kW, based on nominal air flow.
N = Net Heating Capacity kW allowing for average defrost.
= Nominal Capacity (kW).
Models
Indoor
Entering Air
Temp. °C Outdoor coil entering air temperature °C D.B.
Indoor Unit
Outdoor Unit D.B. -5 -3 -1 1 3 5 7 9
GN. GN. GN. GN. GN. GN. GN. GN.
ISD 380KB-P *
OSA 380
15 26.3 23.7 28.5 25.6 30.4 27.1 32.4 2 7. 9 34.4 29.4 36.9 35.1 39.3 39.3 41.2 41.2
20 25.8 23.2 27.9 25.1 29.8 26.6 31.8 2 7. 3 33.7 28.8 36.2 34.4 38.5 38.5 40.4 40.4
25 24.8 22.4 26.9 24.2 28.7 25.6 30.6 26.3 32.4 27.7 34.9 32.8 37.1 37.1 38.9 38.9
ISD 380KBY
OSA 380
15 26.5 23.8 28.7 25.8 30.6 27. 3 32.6 28.0 34.6 29.6 37. 2 35.3 39.5 39.5 41.5 41.5
20 26.0 23.4 28.1 25.3 30.0 26.7 32.0 2 7. 5 33.9 29.0 36.4 34.6 38.8 38.8 40.7 40.7
25 25.0 22.5 27.1 24.4 28.9 25.7 30.8 26.5 32.7 27. 9 35.1 33.0 37. 3 3 7. 3 38.2 38.2
ISD 465KB
OSA 465
15 30.0 27.0 32.5 29.3 34.8 30.9 37.0 31.8 39.2 33.6 42.2 40.1 44.9 44.9 47.1 47.1
20 29.5 26.5 31.9 28.7 34.1 30.3 36.3 31.2 38.5 32.9 41.3 39.3 44.0 44.0 46.2 46.2
25 28.4 25.5 30.7 2 7.6 32.8 29.2 34.9 30.0 37.1 31.7 39.8 37.4 42.3 42.3 44.5 44.5
ISD 570KB-P *
OSA 570
15 40.2 38.4 42.5 38.0 44.8 38.5 47.1 47.1 49.4 49.4 51.7 51.7 54.0 54.0 56.3 56.3
20 39.6 37.9 41.9 37. 5 44.2 44.2 46.5 46.5 48.8 48.8 51.1 51.1 53.4 53.4 55.7 55.7
25 38.4 37.0 40.6 36.5 42.9 40.6 45.2 45.2 47. 5 47. 5 49.8 49.8 52.1 52.1 54.4 54.4
ISD 570KB
OSA 570
15 41.5 39.6 43.8 39.2 46.2 39.7 48.6 48.6 50.9 50.9 53.3 53.3 55.7 55.7 58.0 58.0
20 40.8 39.1 43.2 38.7 45.6 45.6 47. 9 47. 9 50.3 50.3 52.7 52.7 55.0 55.0 5 7.4 5 7.4
25 39.5 38.1 41.9 37.7 44.3 41.9 46.6 46.6 49.0 49.0 51.4 51.4 53.7 53.7 56.1 56.1
ISD 670KB-P *
OSA 670
15 46.7 44.7 49.4 44.2 52.1 44.8 54.7 47. 5 5 7.4 5 7.4 60.1 60.1 62.7 62.7 65.4 65.4
20 46.0 44.1 48.7 43.6 51.4 44.2 54.0 54.0 56.7 56.7 59.4 59.4 62.0 62.0 64.7 64.7
25 44.6 43.0 47. 2 42.4 49.9 49.9 52.6 52.6 55.2 55.2 57. 9 57.9 60.6 60.6 63.2 63.2
ISD 670KB
OSA 670
15 47. 3 45.2 50.0 44.7 52.7 45.3 55.4 48.0 58.1 58.1 60.8 60.8 63.5 63.5 66.2 66.2
20 46.6 44.7 49.3 44.1 52.0 44.8 54.7 54.7 57.4 57.4 60.1 60.1 62.8 62.8 65.5 65.5
25 45.1 43.5 47.8 43.0 50.5 50.5 53.2 53.2 55.9 55.9 58.6 58.6 61.3 61.3 64.0 64.0
ISD 840KB
OSA 840
15 54.5 47.7 59.0 50.8 63.1 52.0 67. 2 53.1 71.2 53.8 76.5 59.4 81.4 63.5 85.5 85.5
20 53.5 46.8 5 7.9 49.8 61.9 51.0 65.8 52.0 69.8 52.7 75.0 54.8 79.8 62.2 83.8 83.8
25 51.5 45.1 55.7 47.9 59.6 49.1 63.4 50.1 6 7. 2 50.8 72.2 52.7 76.9 59.9 80.7 80.7
ISD 950KB
OSA 950
15 61.6 53.9 66.6 5 7. 3 71.2 58.8 75.8 59.9 80.4 60.7 86.4 67.1 91.9 71.7 96.5 96.5
20 60.4 52.8 65.3 56.2 69.8 57.6 74.3 58.7 78.8 59.5 84.7 61.8 90.1 70.3 94.6 94.6
25 58.1 50.8 62.9 54.1 6 7. 2 55.5 71.6 56.6 75.9 5 7. 3 81.6 59.5 86.8 67.7 91.1 91.1
Ducted Split System Air Conditioners
Performance Data
* EC Plug fan version

Page 10
AIR HANDLING
Airflows are for a dry coil. Reduce airflow by 10% in high moisture removal conditions. In a free blow or low resistance application, beware of
exceeding indoor fan motor’s full load amp limit.. Refer page 11 for Filter Pressure Drop.
Ducted Split System Air Conditioners
Performance Data
1400 1600 1800 2000 2200 2400
0
50
100
150
AIR FLOW (l/s)
AVAILABLE EXTERNAL PRESSURE (Pa)
Face Velocity 2.0 m/s
200
250
800 RPM (5.3V)
1000 RPM (6.7V)
1100 RPM (7.3V)
ISD 380KBY
2.5 m/s
ISD 380KBY
l/s - Pa
ISD 380KB-P (c/w Plug fans)
1500 2000 2500 3000 3500 4000
0
100
200
300
AIR FLOW (l/s)
AVAILABLE EXTERNAL PRESSURE (Pa)
2.5 m/s Face Velocity
400
500
700 RPM
800 RPM
5.5 kW MOTOR LIMIT
900 RPM
1.3kW
1.7kW
2.3kW
2.2kW
4.5kW
3.5kW
5.5kW
3.5kW
600 RPM
ISD 570KB
l/s - Pa l/s - W
----
ISD 465KB
l/s - Pa l/s - W
----
2000 2100 2200 2300 2400 2500
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNA
L PRESSURE (Pa)
INPUT (kW)
3.0
2.0
1.0
2.5
1.5
2.5 m/s Face Velocity
8.2V DC
400
9.2V DC
10.0V DC
8.2V DC
9.2V DC
10.0V DC
500
l/s - Pa l/s - W
----
ISD 570KB-P (c/w Plug fans)
l/s - Pa
1500 2000 2500 3000 3500
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNAL
PRESSURE (Pa)
2.5 m/s Face Velocity
7V
400
9V
10V
4000
8V
500
3.3kW
3.7kW
1.1kW
2.4kW
2.8kW
1.2kW
Model : ISD 465KB ISD 570KB
Std Motor Size kW 35.5
Max. D.O.L. Motor kW 37. 5
Max. Fan Speed RPM 850 1000
Std Pulley Range RPM 600–800 600–800
Factory Setting RPM 700 700
1800 2000 2200 2400 2600 2800
0
50
100
150
AIR FLOW (l/s)
AV
AILABLE EXTERNA
L PRESSURE (Pa)
2.3 m/s Face Velocity
200
250
600 RPM
800 RPM
700 RPM
3000
850 RPM
3 kW MOTOR LIMIT
750 RPM

Page 11
AIR HANDLING
Airflows are for a dry coil. Reduce airflow by 10% in high moisture removal conditions. In a free blow or low resistance application, beware of
exceeding indoor fan motor’s full load amp limit..
Ducted Split System Air Conditioners
Performance Data
2000 2500 3000 3500 4000 4500
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNAL
PRESSURE (Pa)
Rating 2.5 m/s Face Velocity
600 RPM
400
500
700 RPM
800 RPM
5.5 kW MOTOR LIMIT
900 RPM
1.3kW
1.8kW
2.4kW
2.2kW
4.5kW
3.6kW
5.6kW
4.4kW
ISD 670KB
l/s - Pa l/s - W
----
1500 2000 2500 3000 3500
0
100
200
300
AIR FLOW (l/s)
AVAILABLE EXTERNAL PRESSURE (Pa)
2.5 m/s Face Velocity
7V
400
9V
10V
4000
8V
500
3.3kW
3.7kW
1.1kW
2.4kW
2.8kW
1.2kW
ISD 670KB-P (c/w Plug fans)
l/s - Pa
1.5 2.0 2.5 3.0
0
25
50
75
FILTER FACE VELOCITY (m/s)
PRESSURE DROP (Pa)
100
Based on Koch Multi-Pleat HC filter.
Max. final pressure drop 250 Pa.
IN
IT
I
A
L(
Cl
ea
n
Fil
te
r)
Optional Filters - Pressure Drop ISD 840KB
l/s - Pa l/s - W
----
3000 3500 4000 4500 5000 5500
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNA
L PRESSURE (Pa)
2.5 m/s Face Velocity
600 RPM
400
500
700 RPM
800 RPM
5.5 kW MOTOR LIMIT
3000 3500 4000 4500 5000 5500
0
100
200
300
AIR FLOW (l/s)
AV
AILABLE EXTERNAL
PRESSURE (Pa)
2.5 m/s Face Velocity
900 RPM
400
500
700 RPM
800 RPM
7.5 kW MOTOR LIMIT
1000 RPM
ISD 950KB
l/s - Pa l/s - W
----
Model : ISD 670KB ISD 840KB ISD 950KB
Std Motor Size kW 5.5 5.5 7. 5
Max. D.O.L. Motor kW 7. 5 7. 5 7. 5
Max. Fan Speed RPM 1000 950 1000
Std Pulley Range RPM 600–800 615–755 685–840
Factory Setting RPM 700 685 765

Page 12
Ducted Split System Air Conditioners
Performance Data
SOUND LEVELS
Sound Power Levels (SWL)
Test Conditions: BS 848 PT2 1985.
Installation Type A (free inlet and outlet).
Direct method of measurement (reverberant room).
Measured in decibels re 1 picowatt, at nominal airflow.
INDOOR UNIT -SUPPLY AIR OUTLET
Models FAN SPEED SWL dB(A)
OCTAVE BAND FREQUENCY Hz
125 250 500 1K 2K 4K
SOUND POWER LEVELS (SWL) dB
ISD 380KBY
750 RPM (5V) 73 72 68 70 67 66 63
950 RPM (6.3V) 80 78 73 76 75 74 70
1150 RPM (7.6V) 85 82 78 80 80 79 74
ISD 380KB-P
LOW (7V) 71 72 70 68 67 60 54
MED (8V) 74 74 73 71 71 65 59
HIGH (9V) 78 75 79 74 74 69 63
ISD 465KB 810 RPM 81 79 76 79 76 74 72
ISD 570KB 600 RPM 81 80 81 78 76 76 73
800 RPM 86 87 85 82 80 80 77
ISD 570KB-P
LOW (7V) 63 69 62 61 60 51 50
MED (8V) 72 81 72 71 66 62 57
HIGH (9V) 80 86 79 79 74 69 66
ISD 670KB 600 RPM 81 80 81 78 76 76 73
800 RPM 86 87 85 82 80 80 77
ISD 670KB-P
LOW (5V) 63 69 62 61 60 51 50
MED (7V) 72 81 72 71 66 62 57
HIGH (9V) 80 86 79 79 74 69 66
ISD 840KB 600 RPM 81 80 81 78 76 76 73
800 RPM 86 87 85 82 80 80 77
ISD 950KB
700 RPM 80 81 79 75 73 74 72
900 RPM 86 86 84 82 81 80 77
1000 RPM 88 89 87 84 82 82 79
SOUND PRESSURE LEVELS (SPL)WITHIN A ROOM
Deduct the room absorption effect below from the Sound Power Levels (SWL) above to obtain Sound Pressure Levels within a room.
Note: Occupant at least 1.5 m from sound source.
Room type
OCTAVE BAND FREQUENCY Hz
125 250 500 1K 2K 4K
ROOM ABSORPTION EFFECT
Soft 4 8 11 11 11 11
Medium 3 7 8 9 9 9
Hard 0 1 3 4 4 5

Page 13
Ducted Split System Air Conditioners
Performance Data
OUTDOOR UNIT
OCTAVE BAND FREQUENCY Hz
125 250 500 1K 2K 4K
Models FAN SPEED SWL dB(A) SOUND POWER LEVELS dB
OSA 380
LOW 79 84 82 77 73 64 58
HIGH 80 84 83 78 75 67 61
OSA 465
LOW 79 84 82 77 73 64 58
HIGH 80 84 83 78 75 67 61
OSA 570
LOW 79 84 82 77 73 64 58
HIGH 80 84 83 78 75 67 61
OSA 670
LOW 79 84 82 77 73 64 58
HIGH 80 84 83 78 75 67 61
OSA 840 HIGH 82 85 80 79 78 73 66
OSA 950 HIGH 82 85 80 79 78 73 66
Models FAN SPEED SPL @ 3 m dB(A) SOUND PRESSURE LEVELS dB
OSA 380
LOW 63 68 66 61 57 48 42
HIGH 64 68 67 62 59 51 45
OSA 465
LOW 63 68 66 61 57 48 42
HIGH 64 68 67 62 59 51 45
OSA 570
LOW 63 68 66 61 57 48 42
HIGH 64 68 67 62 59 51 45
OSA 670
LOW 63 68 66 61 57 48 42
HIGH 64 68 67 62 59 51 45
OSA 840 HIGH 66 69 64 63 62 57 50
OSA 950 HIGH 66 69 64 63 62 57 50
Sound Pressure Level (SPL) in decibels re 20 µPa.

Page 14
Ducted Split System Air Conditioners
Dimensions (mm)
ISD 380KB-P INDOOR UNIT (C/W PLUG FANS)
600 MIN. CLEARANCE
ELECTRICAL
BOX
REFRIGERANT
CONNECTIONS
65
830 OA
HOLES
17 ID
2100
60
2315
OVERALL
DRAIN
28 OD
ACCESS
PANEL
705
OVERALL
290
70
WX
Y
Z
70
1706
275
VERTICAL
DISCHARGE
VERSION
70
585
60
290
REFRIG.
CONN’S
120
VERTICAL
DISCHARGE
VERSION
OPTIONAL
FILTER BOX
150
60
600 MIN. CLEARANCE
2183
MOUNTING STRAP &
OPTIONAL SPRING MOUNTING CENTRES
806
OPTIONAL
SPRING
MTG CTRS
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
ISD 380KBY INDOOR UNIT
600 MIN. CLEARANCE
ELECTRICAL
BOX
REFRIGERANT
CONNECTIONS
65
830 OA
HOLES
17 ID
2100
2315
OVERALL
DRAIN
28 OD
ACCESS
PANEL
705
OVERALL
290
70
WX
Y
Z
70
1706
275
585
60
REFRIG.
CONN’S
120
OPTIONAL
FILTER BOX
150
60
600 MIN. CLEARANCE
EC MOTOR
CONTROL BOX
EC MOTOR
CONTROL BOX
EC MOTOR
CONTROL BOX
2183
MOUNTING STRAP &
OPTIONAL SPRING MOUNTING CENTRES
806
OPTIONAL
SPRING
MTG CTRS
Not to Scale
PROJECTION
CORNER LOADS (kg)
W X Y Z
44 48 58 53
Not to Scale
PROJECTION
CORNER LOADS (kg)
W X Y Z
42 49 42 36
Refer matched Outdoor Unit for
recommended pipe sizes
Refer matched Outdoor Unit for
recommended pipe sizes

Page 15
Ducted Split System Air Conditioners
Dimensions (mm)
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
ISD 465KB INDOOR UNIT
ELECTRICAL
ACCESS
PANEL
1405
1565 OA
45
410
75
DRAIN 28 OD
150
60
1210 OA
1200 OA
ACCESS PANEL
WX
Y
Z
REFRIGERANT
CONNECTIONS
500
1000 MIN. CLEARANCE
1055
MOUNTING CENTRES
80
255
477
505
412
245
FILTER ACCESS
EITHER SIDE
VERTICAL
DISCHARGE
MODEL
1110
500 MIN. CLEARANCE
REFRIGERANT
CONNECTIONS
ELECTRICAL
BOX
Not to Scale
PROJECTION
CORNER LOADS (kg)
W X Y Z
57 74 82 64
Refer matched Outdoor Unit for
recommended pipe sizes

Page 16
Ducted Split System Air Conditioners
Dimensions (mm)
ISD 570/670 KB-P INDOOR UNIT (C/W PLUG FANS)
ELECTRICAL
ACCESS
PANEL
1435
1650 OA
70
700
90
DRAIN 28 OD
150
60
1150 OA
1345 OA
ACCESS
PANEL
WX
Y
Z
250
1000 MIN. CLEARANCE
1100
MOUNTING CENTRES
80
265
900370
575
75
FILTER ACCESS
EITHER SIDE
VERTICAL
DISCHARGE
MODEL
1020
500 MIN. CLEARANCE
REFRIGERANT
CONNECTIONS
ELECTRICAL
BOX
1100
235
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
ISD 570/670 KB INDOOR UNIT
ELECTRICAL
ACCESS
PANEL
1435
1650 OA
70
465
90
DRAIN 28 OD
150
60
1150 OA
1345 OA
ACCESS PANEL
WX
Y
Z
485
1000 MIN. CLEARANCE
1100
MOUNTING CENTRES
80
265
565
445
465
55
FILTER ACCESS
EITHER SIDE
VERTICAL
DISCHARGE
MODEL
1020
500 MIN. CLEARANCE
REFRIGERANT
CONNECTIONS
ELECTRICAL
BOX
Not to Scale
PROJECTION
CORNER LOADS (kg)
Model W X Y Z
ISD 570 75 92 119 47
ISD 670 81 100 121 48
Not to Scale
PROJECTION
CORNER LOADS (kg)
Model W X Y Z
ISD 570 81 81 52 52
ISD 670 87 87 54 54
Refer matched Outdoor Unit for
recommended pipe sizes
Refer matched Outdoor Unit for
recommended pipe sizes

Page 17
Ducted Split System Air Conditioners
Dimensions (mm)
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
ISD 840/950 KB INDOOR UNIT
2005
2220 OA
75
75
DRAIN 28 OD
150
60
1320 OA
WX
Y
Z
REFRIG.
CONN’S
1000 MIN. CLEARANCE
1360
MOUNTING CENTRES
105
430
500 MIN. CLEARANCE
REFRIGERANT
CONNECTIONS
ELECTRICAL
BOX
ACCESS PANEL
FILTER ACCESS
EITHER SIDE
VERTICAL
DISCHARGE
MODEL
ELECTRICAL
ACCESS
PANEL
A
B
470
565830
305
470
535
Not to Scale
PROJECTION
DIM. CORNER LOADS (kg)
Model A B W X Y Z
ISD 840KB 1070 955 70 116 116 70
ISD 950KB 1280 1165 66 137 125 55
Refer matched Outdoor Unit for
recommended pipe sizes

Page 18
OSA 380RKTB(G)OUTDOOR UNIT
Ducted Split System Air Conditioners
Dimensions (mm)
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
1217
MOUNTING CENTRES
1504
MOUNTING CENTRES
50
1420
O/A
OUTDOOR
AIR FLOW
OUTDOOR
AIR FLOW
1000 MIN. CLEARANCE
500 MIN. CLEARANCE
ACCESS
PANELS
WX
Y
Z
500 MIN. CLEARANCE
1710 O/A
ACCESS
PANEL
1480
REFRIG. CONN’S
2000 MIN. CLEARANCE
Not to Scale
PROJECTION
Recommended Pipe Sizes
Suction: 22 mm OD (x2)
Liquid: 13 mm OD (x2)
CORNER LOADS (kg)
W X Y Z
154 77 79 144
OSA 465RKTB OUTDOOR UNIT
Not to Scale
PROJECTION
CORNER LOADS (kg)
W X Y Z
146 77 77 145
1276
MOUNTING CENTRES
1504
MOUNTING CENTRES
55
1270
O/A
OUTDOOR
AIR FLOW
OUTDOOR
AIR FLOW
1000 MIN. CLEARANCE
500 MIN. CLEARANCE
ACCESS
DOORS
WX
Y
Z
500 MIN. CLEARANCE
1790 O/A
ACCESS
DOOR
1480
REFRIG. CONN’S
2000 MIN. CLEARANCE
Recommended Pipe Sizes
Suction: 22 mm OD (x2)
Liquid: 13 mm OD (x2)

Page 19
OSA 570/670 RKTB OUTDOOR UNIT
Ducted Split System Air Conditioners
Dimensions (mm)
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
B
MOUNTING CENTRES
1506
MOUNTING CENTRES
55
A
OVERALL
OUTDOOR
AIR FLOW
OUTDOOR
AIR FLOW
1000 MIN. CLEARANCE
500 MIN. CLEARANCE
ACCESS
PANEL
WX
Y
Z
500 MIN. CLEARANCE
1755 O/A
ACCESS
PANEL
1480
2000 MIN. CLEARANCE
Not to Scale
PROJECTION
DIM. CORNER LOADS (kg)
Model A B W X Y Z
OSA 570 1345 1263 174 81 81 175
OSA 670 1390 1231 182 88 88 183
Recommended Pipe Sizes
Suction: 28 mm or 35 mm OD (x2)
Liquid: 13 mm OD (x2)
OSA 840/950 RKTB OUTDOOR UNIT
1771
MOUNTING CENTRES
1502
MOUNTING CENTRES
55
1210
O/A
OUTDOOR
AIR FLOW
OUTDOOR
AIR FLOW
1000 MIN. CLEARANCE
500 MIN. CLEARANCE
ACCESS
PANEL
WX
Y
Z
500 MIN. CLEARANCE
2300 O/A
P
1680
262
REFRIG. CONN’S
ACCESS
ANEL
2000 MIN. CLEARANCE
Not to Scale
PROJECTION
CORNER LOADS (kg)
Model W X Y Z
OSA 840 193 92 92 194
OSA 950 185 109 109 186
Recommended Pipe Sizes
Suction: 35 mm OD (x2)
Liquid: 16 mm OD (x2)

Page 20
Ducted Split System Air Conditioners
Specifications
System
Indoor Unit ISD 380KBY ISD 380KB-P ISD 465KB
Outdoor Unit OSA 380RKTB OSA 380RKTB OSA 465RKTVB
Nominal Cooling Capacity *1kW 37.6 37.1 44.6
Net Cooling Capacity kW 36.4 35.9 42.6
Heating Capacity *238.8 (35.9) 38.5 (35.7) 44.0
EER / AEER (Cooling) 3.26 / 3.25 3.20 / 3.19 2.98 / 2.95
COP / ACOP (Heating) 3.46 / 3.44 3.43 / 3.41 3.53 / 3.51
Controller C6
Indoor air fan type forward curved
backward curved forward curved
Indoor air fan motor EC EC plug AC induction
Air Flow *3l/s 2100 2550
Power Source *43 phase 400 V a.c. 50 Hz
Indoor Fan Full Load Amps A/ph. 6 (x2) 2.5 (x2) 6.2
Running Amps (Total System) A/ph. 22 / 17 / 16 22 / 17 / 17 31 / 26 / 25
Max. Running Amps (Total Sys.) A/ph. 21 / 25 / 25 22 / 27 / 22 43 / 37 / 37
Refrigerant R410A
Maximum Vertical Separation m20 20
Maximum Standard Line Length m60 30 or 60*5
Pipe Sizes (Suction/Liquid) mm OD 22 / 13 22 / 13
Operating Range (outdoor ambient)
Cooling -10°C to 52°C
Heating -15°C to 25°C
Finish
Indoor Unit zinc galvanised steel
Outdoor Unit grey polyester powder coat
Weight
Net Weight (indoor/outdoor) kg 203 / 458 169 / 458 277 / 445
Shipping Weight (ind./out.) (approx.) kg 226 / 474 195 / 474 300 / 490
Notes:
*1Nominal Cooling Capacity at AS/NZS 3823 conditions:
- Indoor Entering Air Temperature 27°C D.B., 19°C W.B.;
- Outdoor Entering Air Temperature 35°C D.B.
Net Cooling Capacity at AS/NZS 3823 includes an allowance for indoor fan
motor heat loss.
( ) Bracketed figure is performance when matched to digital outdoor unit,
ie OSA 380RKTBG.
*2Heating Capacity (reverse cycle units only) at AS/NZS 3823 conditions:
- Indoor Entering Air Temperature 21°C D.B.;
- Outdoor Entering Air Temperature 7°C D.B., 6°C W.B.
Materials and specifications are subject to change without notice due to the manufacturer’s ongoing research and development programme.
*3Supply air flow at Nominal Cooling Capacity conditions stated above.
*4Power source includes voltage limits.
*5Extra suction accumation required.