TemperZone OSA 160RK Installation & Maintenance

OSA 160RK
Reverse Cycle R410A
Split System Outdoor Unit
GENERAL
OSA 160RKS – single phase version
OSA 160RKT – three phase version
This OSA 160RK Outdoor Unit must be
installed in accordance with all national and
local safety codes.
Options
1. Vertical discharge grille.
2. Wall mounting brackets.
3. Anti-vibration mounts (rubber).
4. Drain connection adaptors - right angle.
INSTALLATION
Positioning
Refer to dimension diagram below for
minimum clearances. Position the unit so
that prevailing winds do not blow onto the
exhaust to slow the fan, and one unit does
not exhaust toward the inlet of another unit.
The optional vertical discharge grille can be
used to deflect prevailing winds and reduce
clearances.
Dimensions (mm)
150 MIN. CLEARANCE
2000 MIN. CLEARANCE
970
OVERALL
72
25 DIA. 700 MTG CTR
DRAIN 225 12 DIA. HOLE+SLOT
HOLE
OVERALL
Mount either free standing or on a wall using
the optional mounting brackets available.
Free Standing :
Fasten the unit down to a firm flat horizontal
base using the four holes provided in the
mounting rails.
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.
Wall Mounting Option:
Complete wall mounting instructions are
supplied with the optional wall mounting kit.
Drain
Install the unit with a positive fall to the rear
to ensure condensate and/or rain water
drains away freely through the drain holes
provided. Drain connection adaptors (25/13)
are available as an optional extra.
*
25 DIA.
198 DRAIN
HOLE
1125
* 600 min with optional Vertical Discharge Grille
OSA 160RK
PROJECTION
Not to Scale
Net Weight 133 kg
ACCESS
PANEL
REFRIG.
CONN'S
25 DIA.
ELECTRICAL
CONDUIT
HOLES
375
27
MTG CTR
420
OVERALL
Installation &
Maintenance
REFRIGERATION PIPING
General
The OSA 160 is shipped with a refrigerant
charge sufficient for a 10 m line length.
The matched indoor unit is shipped with a
holding charge of nitrogen. OSA 160 units
have one flare and one rotolock assembly.
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
Line Lengths
Maximum extended line length is 50 m.
Refer also to Oil Charge overleaf.
Height Separation Limits
Outdoor Unit above Indoor Unit : 18 m
Outdoor Unit below Indoor Unit : 18 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. Bi-flow type filter dryer may be fitted in
the liquid line.
6. Include a process point in the
interconnecting pipework.
7. Ensure open pipe ends are sealed until
the final connection is made.
8. Caution: To avoid damage to teflon
seals, braze suction pipework to stub
connection (supplied loose) before
connecting to unit's valve.
9. Remove valve's dust cap and lubricate
teflon seal with refrigeration oil prior to
final assembly and connection.
Charging
The unit is supplied with 3.6 kg of refrigerant
HFC-410A (R410A) which is sufficient for up
to 10 m of pipework between the indoor and
outdoor units. Add 60 g of HFC-410A per
metre above 10 m.
cont'd...