ISD 80/95/110/140 K-DN (c/w SAT-2 Controller)
Ducted Split System
Indoor Units
Installation &
Maintenance
GENERAL
These ISDSK-DN indoor units are designed
to be coupled with the OSASRK outdoor
units. The '-DN' indicates the unit is supplied
complete with SAT-2 room temperature
controller and safety drain tray.
Units must be installed in accordance with
all national and local safety codes.
Combinations
One ISD 81K with one OSA 80RKS
One ISD 95K with one OSA 95RKS
One ISD 110K with one OSA 110RKS
One ISD 110K with one OSA 110RKT
One ISD 140K with one OSA 140RKT
Options
1. Filter Box c/w polypropylene net filter
2. Spring Mounting Kit
3. Electric Heater Box
4. Supply & Return Air Plenums
5. SAT-2 Accessories (refer overleaf).
SAFETY DRAIN TRAY
The unit is supplied with a safety drain tray
to protect your ceiling against accidental
damage. The safety drain tray is best
secured to the ISD unit after the unit has
been suspended in the ceiling, however it
is possible to fit it before if circumstances
make this easier.
AIR FILTRATION / FILTER BOX (Option)
As air filtration requirements vary, filters are
not supplied with the unit. Filters should
ideally be installed on the return air side of
the unit, no closer than 500mm from the
back of the unit and easily accessible for
cleaning. To maximise the efficiency of air
flow, the return air filter should be twice the
area of the ISD unit's return air spigot/s. If
efficiency is less of a concern a Filter Box is
available.
The Filter Box is installed by unscrewing
the return air spigot and replacing it with
the Filter Box's filter-integrated spigot. The
filter may be accessed from either side of
this spigot. This new spigot has a depth of
135 mm, instead of 60 mm.
ELECTRIC HEATER BOX (Option)
The Electric Heater Box is installed by
unscrewing the supply air spigot and
replacing it with the Electric Heat Box's
element-integrated spigot. This new spigot
has a depth of 195 mm, instead of 60 mm.
A separate page of installation instructions is
supplied with the Kit.
INSTALLATION
Positioning & Mounting
Provide 500 mm minimum clearance to both
ends of the unit.
Fig. 1 Dimensions (mm)
Not to Scale
PROJECTION
ISD 80K, 91K, 110K, 140K
Fig. 2 Spring Mounting
Fig. 3 Solid Mounting
RECOMMENDED
MOUNTING
SYSTEM
(OPTIONAL
EXTRA)
Fig. 4
OPEN
DRAIN
MINIMUM
SLOPE
20 mm PER m
(1 IN 50)
50 mm
MINIMUM
100 mm
APPROX.
'U' TRAP
100 mm
APPROX.
VENT PIPE
FOR LONG
CONDENSATE
DRAIN RUNS
UNIT
Note: The Safety Drain Tray
does not require trapping.
REFRIGERANT
CONNECTIONS
E
OVERALL
50
420 OA
225
335
60
30
DRAIN 19 OD
30
650 OA
400
482
MOUNTING
CENTRES
B
ELECTRICAL
CONDUIT HOLE
(BOTH ENDS)
6060
FAN ACCESS VIA
REMOVEABLE BASE
& DRAIN TRAY
ACCESS
PANEL
ELECTRICAL
BOX
170
ELECTRICAL
BOX
C
FIXED MTG CTRS
D
500 MIN. CLEARANCE
500 MIN. CLEARANCE
F
Condensate Drain
Net Weight
ISD 80K 36 kg
ISD 91K 39 kg
ISD 110K 40 kg
ISD 140K 46 kg
TIGHTEN
LOCKNUTS
FOR
STRENGTH
MOUNTING ROD
MOUNTING
BRACKETS
SUPPLIED
B
125
175
240
240
A
570
660
787
787
C
747
836
962
962
MODEL
ISD 80K
ISD 95K
ISD 110K
ISD 140K
D
805
895
1020
1020
E
835
925
1050
1050
F
190
230
290
290
If the Electric Heater Box or Filter Box
options are to be used, allow adequate
clearance for servicing.
If low noise is a critical factor in the
installation, refer to Figure 6 for noise
isolation recommendations.
It is recommended that the unit be mounted
using the spring mounting system, supplied
as an optional extra (Fig.2). This system
minimises transfer of vibration into the
building structure.
If a more rigid installation can be tolerated,
then suspend the unit from four threaded
rods (not supplied) attached to the ceiling.
Four 'L' shaped brackets are supplied on the
unit to facilitate this method. These brackets
must first be unscrewed, reversed and
resecured to enable rod attachment.
The unit has a built-in sloping drain tray,
therefore mount it level.
When finally positioned, tighten the lock
nuts on the mounting rods from above and
below the mounting flange to give a firm
installation (see Fig. 3).
Condensate Drain
The condensate drain should be trapped
outside the unit cabinet. The trap should
have a vertical height of at least 50 mm.
The drain should have a slope of at least
1 in 50 and must not be piped to a level
above the unit drain tray. (Refer Fig.4).
For long condensate pipe runs, fit a vent
pipe near the drain trap. The top of the vent
pipe must be at least 100 mm above the ISD
unit's drain tray.
It is essential that the drainage system
for the evaporator is checked by pouring
water in the drain tray and seeing that it
discharges at the end of the drain and does
not overflow the drain tray.
Note: The built-in drain tray can be
removed for cleaning (or fan access) by first
removing the unit's base.
INDOOR–OUTDOOR UNIT
CONNECTIONS
Refer to the relevant OSA Outdoor Unit
'Installation & Maintenance' pamphlet for
piping instructions. For wiring connections,
refer to the Outdoor Unit wiring diagram in
conjunction with the ISD wiring diagram in
this pamphlet.
REFRIGERATION PIPING
Pipe Connection Sizes (mm OD) & Type
Model Liquid Suction
ISD 80K 10 (3/8") sweat 16 (5/8") sweat
ISD 95K 10 (
3
/8") sweat 16 (5/8") sweat
ISD 110K 10 (
3
/8") sweat 19 (3/4") sweat
ISD 140K 10 (
3
/8") sweat 19 (3/4") sweat
The ISD is shipped from the factory with
a pressurised holding charge of nitrogen.
Immediately before removing any brazed
pipe connection's seal, reduce the holding
charge to atmospheric pressure.
Warning: Failure to do so may cause injury.
Refer to the Outdoor Unit 'Installation &
Maintenance' pamphlet for evacuation
procedure and piping requirements.
ELECTRICAL WIRING
The electrical supply required (via the
Outdoor Unit) is specified on the Outdoor
Unit's wiring diagram.
Electrical work must be carried out by a
qualified electrician in accordance with local
supply authority regulations and the wiring
diagram.
In a free blow or low resistance application,
beware of exceeding the fan motor's full
load amp limit (refer Outdoor Unit's wiring
diagram).
Note: The SAT-2 Controller automatically
switches the indoor fan off during de-ice,
therefore no additional wiring is required to
achieve this result.
INDOOR FAN SPEED
The fan speed can be set to LOW, MED, or
HIGH - whichever best suits the application.
If the air returning to the indoor unit is
regularly expected to be above 50%RH,
then the coil face velocity should be limited
to be 2.5 m/s or less (refer Air Handling
graph in Technical Data pamphlet).
High humidity levels can occur in tropical or
subtropical conditions, and/or when heavily
moisture laden fresh air is introduced. Select
a fan speed that avoids water carry-over
problems.
SAT-2 CONTROLLER
The following components are supplied in a
box taped inside the return air spigot:
1. SAT-2 Wall Control plaque, including wall
mounting plate.
2. 10 m interface lead (electrical box-toplaque).
3. User's Operating Instructions booklet.
4. Lithium CR2032 battery (3V).
Optional
1. Remote return air sensor (in box).
2. Remote return air temperature sensor
lead; 1.5, 6, 12 or 25 m.
3. 20 m extended interface lead
(electrical box-to-plaque).
4. ISD indoor unit–to–OSA outdoor
unit interconnecting lead;
12.5 m or 25 m; 7 core.
5. SAT-2 Zone Control PCB.
6. Zone Control 24V transformer.
7. Additional SAT-2 Wall Control plaque.
8. Infra red remote control.
Installation
The SAT-2 Controller PCB is supplied preinstalled in the ISD unit's electrical box.
1. Isolate the ISD unit from power supply,
then remove electrical box cover.
2. Remove the SAT-2 box supplied taped
inside the return air spigot.
3. Remove the Wall Control's interface
lead from this box and connect the bare
wired end of the interface lead to the
terminal block on the SAT-2 Controller
board (refer wiring diagram). Trace the
remaining length of the lead to the Wall
Control's intended location.
4. Remove the Wall Control's backing plate
by using a small screw driver to remove
the single screw at the bottom edge of
the plaque.
5. Install the Lithium battery, supplied loose,
positive (+) side up in the Wall Control's
battery holder.
6. Check the wall where the Wall Control
plaque is to be located is flat before
fastening the wall mounting plate.
Alternatively, the mounting plate can
be screwed to a standard wall socket
mounted horizontally.
Note: Use low profile (mush) headed
screws to prevent contact with the PCB
board. Fixing the plate to a distorted
surface may damage the control.
7. Drill hole in wall to allow cable entry.
8. Connect the interface lead's lugs to the
Wall Control board as per the wiring
diagram overleaf.
9. Ensure the interface lead is run
separately and away from main
power supply wires, including the
interconnecting cable. When installing
cabling, trim any excess length to suit
your location.
10. Fill around the interface lead with foam
or cover hole with PVC tape to prevent
draft from wall cavity affecting control
operation. Do not use aluminium duct tape.
11. Secure the Wall Control body to the
mounting plate by replacing the locking
screw removed earlier.
12.Replace the ISD electrical box cover.
Remote Air Temperature Sensor/s
(option)
The air temperature sensor is by default
located in the Wall plaque. Optional remote
air temperature sensors are available so that
the measurement of the room temperature
can be taken away from the wall plaque,
eg. elsewhere in the room or in the return
air duct.
Remote sensor's can be plugged directly
into the Controller board (PCB). This
board accepts up to four sensors which
are designated as 'zones' one to four. The
first return air sensor will automatically
replace the Wall Control sensor and should
be located in the same room as the Wall
Control. The Controller will always use the
average of the zones selected. Refer to the
separate installation instructions supplied
with the PCB for further details.
Ensure all remote sensor wires are run
separately and away from main power
supply wires, including the interconnecting
cable.
SAFETY DRAIN TRAY
The safety drain tray is best secured to the
ISD unit after the unit has been suspended
in the ceiling, however it is possible to fit it
before if circumstances make this easier.
1. Unscrew the supporting brackets from
their temporary shipping position, inside
the drain tray, and retain the screws.
2. The drain tray has pre-drilled holes
designed to align with the screws on the
unit. One at a time, remove a screw from
each bottom corner of the ISD unit and fit
a bracket using the same screws.
3. Position the drain tray’s pipe exit so it is
at the same end as the ISD unit’s drain
pipe exit.
4. Supporting the drain tray from
underneath, then secure the drain tray to
each bracket using the supplied screws.
cont'd...
5. Connect the drain pipe to a suitable
drain line with an appropriate slope to
allow free drainage. This drain line does
not require trapping. Test the drain with
water to ensure it clears safely.
DO NOT let the ISD unit’s condensate drain
exit into this safety drain tray.
ISD/OSA SYSTEMS
WITH ELECTRIC HEATER BOX
Replace the systems external fuse with
the size recommended in the table on the
Outdoor Unit's wiring diagram.
Note: Tandem indoor units with electric heat
may require greater fuse sizes on the power
supply.
DIP switch 2 on the SAT-2 Controller PCB,
located in the ISD electrical box, must be
set to 'On' (refer wiring diagram).
COMMISSIONING
Indoor Unit
1. Check that the thermostat is
correctly wired and set at the desired
temperature.
2. Check that the air filter (if fitted) is clean.
3. Check that the fan runs freely without
vibration.
4. Check condensate drain and safety
drain tray for free drainage.
Refer to Outdoor Unit Installation
Instructions in order to complete the startup and commissioning procedure for the
complete air conditioning system.
Demonstrate the SAT-2 Wall Control to the
owner/user, after having first thoroughly
familiarised yourself with the User's
Operating Instructions. This page is to
remain with the owner/user.
MAINTENANCE
Weekly For First Four Weeks
1. Check air filter (if fitted); vacuum clean as
necessary.
2. Check condensate drain for free
drainage.
Monthly
Check air filter (if fitted); vacuum clean as
necessary.
Recommendations for Noise Isolation
- particularly for high static installations:
1. Avoid installing units, with non-ducted return air, directly
above spaces where noise is critical.
2. Use flexible connections between unit and rigid ducting.
3. Use generously sized acoustically lined ducts.
4. If generous duct size is not possible, use turning vanes on
bends to reduce air turbulence (regenerated noise).
5. Use 90° bends in ducting to significantly assist in noise
reduction.
Fig. 6 Application Considerations
FLEXIBLE CONNECTION
FLEXIBLE
CONNECTION
TURNING
VANES
SUPPLY
AIR DUCT
UNIT
(PLAN VIEW)
RETURN
AIR DUCT
MINIMUM OF 1 m
25 mm INSULATED DUCT
UNIT
FLEXIBLE CONNECTION
LINE SUPPLY DUCT WITH
ACCOUSTIC INSULATION
FOR NOISE CONTROL
SUSPENDED CEILING
RETURN AIR GRILLE LOCATED
AWAY FROM UNIT TO MINIMISE
NOISE TRANSMISSION
SUPPLY AIR
GRILLE
SUPPLY AIR DUCT
ALTERNATIVE FILTER LOCATION
WITH SWING OPENING GRILLE
FOR EASY SERVICING
DO NOT ATTACH CEILING WIRES
TO OR THROUGH DUCT
SPRING
MOUNTING
SYSTEM
DOUBLE LAYER OF
PLASTER BOARD
INSTALL INSULATED
NOISE ISOLATION
BOOT & FILTER WHERE
SOUND IS CRITICAL
ALTERNATIVE
RETURN AIR BOOT
FOR SAME EFFECT
Six Monthly
1. Check condensate drain and safety drain
tray for free drainage.
2. Check heat exchanger coil; vacuum or
brush clean as necessary.
3. Check the tightness of the fan.
4. Check that fan motor is free running.
5. Check tightness of electrical connections.
6. Check air supply at diffuser outlets.
WARNING
This unit is designed for use ONLY with the
refrigerant HFC -410A (R410A). The use
of other refrigerants is NOT authorised or
approved by the manufacturer and may
cause operational problems such as poor
performance and efficiency, loss of capacity,
degradation of materials and refrigerant
leaks.
The use of flammable or explosive
materials as a refrigerant creates the
additional risks of fire and explosion
which may result in property damage,
personal injury or death.
SAT-2
ROOM WALL
CONTROL
ISD INDOOR UNIT
OSA
OUTDOOR UNIT
ELECTRICAL
BOX
12.5 or 25 m LEAD
10 m or
20 m LEAD
OPTIONAL
REMOTE
RETURN AIR
SENSOR
1.5, 6, 12 m or
25 m LEAD
POWER SUPPLY
Fig. 5 SAT-2 Control Wiring
Refer back page for
full wiring diagram.
NOTE
The manufacturer reserves
the right to change
specifications at any time
without notice or obligation.
Certified dimensions
available on request.
This pamphlet replaces the
previous issue no. 2950
dated 08/08.
Fig.1 Dimensions E & F.
06/09 Pamphlet No. 3129
© temperzone limited 2009
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