TemperZone OSA 200RKTV, Installation & Maintenance, Page: 1 / 4

OSA 200RKTV
Reverse Cycle R410A
Split System Outdoor Unit
Installation &
Maintenance
Line Lengths
The standard unit allows for a line length
up to 30 m. For line lengths between 30 m
and 60 m, refer to
temperzone 's
Split Systems Installation Guide (refer
www.temperzone.biz/Technical Support).
Refer also to Oil Charge overleaf.
Maximum line length when extended is 60m.
Height Separation Limits
Outdoor Unit above Indoor Unit : 20 m
Outdoor Unit below Indoor Unit : 20 m
Vertical Risers
If the outdoor unit is to be installed above
the indoor unit, then the suction riser should
be trapped at the bottom of the vertical
rise and then again at 8 m (maximum)
intervals. This is to ensure oil return to the
compressor. The trap to be a 'swan neck'
curve in the pipe, with no change in the pipe
size.
Piping
1. Use clean sealed refrigeration grade
piping and accessories designed
specifically for R410A.
2. Cut pipe with a pipe cutter ONLY.
3. Use long radius bends (2x pipe dia.).
4. Insulate the suction (gas) line and seal
all insulation joints.
5. Filter dryers are not required or recom-
mended, however extreme care must be
taken to keep the piping system dry.
6. Include a process point in the
interconnecting pipework.
7. Ensure open pipe ends are sealed until
the final connection is made.
8. Immediately before removing brazed
pipe connection's seal, reduce holding
charge between connection points and
service valves to atmospheric pressure.
Warning : Failure to do so may cause
injury.
Charging
The unit is supplied with refrigerant
HFC-410A (R410A) which is sufficient
for 10 m of pipework between the indoor
and outdoor units; refer wiring diagram
specification table for amount. Add, or
subtract, 60 g of HFC-410A per metre to suit
the installed line length.
Procedure:
1. Evacuate Indoor Unit and
interconnecting pipework to a pressure
of 500 microns and hold for 15 mins.
2. Add refrigerant, if needed, via the
Schraeder connection on the smaller of
the Outdoor Unit's two service valves.
Drain
Four drain holes are provided in the base.
Three plastic bungs are supplied (loose)
should you want to direct the condensate
and/or rain water to one of the holes
provided. Drain connection adaptors (25/13)
are available as an optional extra.
REFRIGERATION PIPING
General
The OSA 200 is shipped with a refrigerant
charge sufficient for a 10 m line length;
refer wiring diagram specification table
for amount. The matched indoor unit is
shipped with a holding charge of nitrogen.
OSA 200 units have shut-off service valves
and swaged assemblies. Two loose pipe
extensions are supplied to enable a choice
of exit – side or rear; both require brazing.
Recommended Pipe Sizes
Suction pipe : 22 mm OD
Liquid pipe : 13 mm OD
GENERAL
This OSA 200RKTV Outdoor Unit must be
installed in accordance with all national and
local safety codes.
Options
1. Anti-vibration mounts (rubber)
2. Drain connection adaptors - right angle.
INSTALLATION
Positioning
Refer to dimension diagram below for
minimum clearances.
Fasten the unit down to a firm flat horizontal
base using the four holes provided in the
mounting rails. To avoid tranfer of vibration,
mount the unit on the optional rubber
mounts available from
temperzone .
When the unit is being installed on a roof
it is recommended that the unit is installed
on a substantial structure with vibration
isolating springs or rubber mounts (optional
extra) beneath the unit. These items are not
supplied with the unit.
Dimensions (mm) OSA 200RKTV
PROJECTION
Not to Scale
Net Weight 142 kg
ACCESS
PANEL
1210
OVERALL
822 MTG CTR
12 DIA. HOLE + SLOT
150 MIN.
CLEARANCE
2000 MIN. CLEARANCE
500 MIN. CLEARANCE
500 MIN.
CLEARANCE
25 ID
DRAIN
HOLES
25 ID
DRAIN
HOLES
590 MTG CTR
630
OVERALL
REFRIG.
CONN'S
EXIT
620
186 186
1130
OVERALL
30 ID
ELECTRICAL
CONDUIT
HOLES
ALTERNATIVE
CONN'S
EXIT
16
82