TemperZone OSA 175RKTHG, Installation & Maintenance

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OSA 175RKTHG
(Digital)
Reverse Cycle R410A
Split System Outdoor Unit
Installation &
Maintenance
REFRIGERATION PIPING
General
The OSA 175 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 175
units have one flare nut 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
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 5 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.
Free Standing :
Fasten the unit down to a firm flat horizontal
base using the four holes provided in the
mounting rails. To avoid transfer 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.
Wall Mounting Option:
Complete wall mounting instructions are
supplied with the optional wall mounting kit.
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.
GENERAL
This OSA 175RKTHG Outdoor Unit must be
installed in accordance with all national and
local safety codes.
Options
1. Vertical discharge grille (2 required).
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 grilles can be
used to deflect prevailing winds and reduce
clearances.
Mount either free standing or on a wall using
the optional mounting brackets available.
Dimensions (mm) OSA 175RKTHG
PROJECTION
Not to Scale
Net Weight 131 kg
765 MTG CTR
12 DIA. HOLE+SLOT
ACCESS
PANEL
375
MTG CTR
420
OVERALL
REFRIG.
CONN’S
25 DIA.
ELECTRICAL
CONDUIT
HOLES
1125
OVERALL
1125
OVERALL
72
150 MIN. CLEARANCE
150 MIN.
CLEARANCE
2000 MIN. CLEARANCE
*
750 MIN.
CLEARANCE
25 DIA.
DRAIN
HOLES
200
27
25 DIA.
DRAIN
HOLES
* 600 min with optional Vertical Discharge Grille