OPA 116RKTYH (c/w EC motor)
Packaged Reverse Cycle R410A
Air Cooled Air Conditioner
Installation &
Maintenance
in the wiring schematic. 24V AC or DC
power from the external (BMS) controller
should be provided to the '24V' and '0V'
input terminals of the Signal Isolator
board.
A voltage below 2V DC applied across
the '0V' and the '0-10V' input terminals
(labelled 'From BMS Controller' in the
wiring schematic) of the Signal Isolator
will stop the indoor fan. A control voltage
of slightly more than 2V will cause the fan
to run at the 'Min. rpm' speed. A 10V DC
signal will run the fan at the 'Max. rpm'
speed. Control voltages between these
two limits can be used to achieve any
desired speed between 'Min.' and 'Max.'
rpm.
Do not use switch combinations
marked with 'DO NOT USE' in the
Speed Selection table.
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.
CHECK TESTS
1. Leave the remote switch in the off
position and close the mains isolating
switch.
A four hour delay period is required to
allow the crankcase heater to drive any
liquid refrigerant out of the compressor oil. Bypass the crankcase heater
thermostat (CCHT) for this period only.
2. Check that all fan motors are free running.
3. Check that the thermostat is correctly
wired to the unit and is set at the desired
temperature.
4. Check that the air filters, if any, have
been correctly installed.
5. Check any supply air diffuser dampers
are open.
START UP PROCEDURE
Use the supplied Commissioning Sheet to
help you complete the following procedure:
1. Switch on the unit after the four
hour delay period for the crankcase
heater has expired. Ensure the
crankcase heater thermostat has been
reconnected.
2. Check for correct rotation of the
compressor. If rotation is incorrect the
compressor will not pump, be noisy, and
REFRIGERATION SYSTEM
General
The refrigeration system has been charged
with R410A refrigerant; refer wiring diagram
specification table for amount. Tapping
points are provided to measure discharge
and suction operating pressures. Beware of
high system pressures; use correct guages.
Compressor
The compressor is directional scroll type.
The compressor lubricant is polyol ester oil
(POE). Note, this oil absorbs moisture quickly if exposed to open air. On commissioning,
the compressor must be checked for correct
rotation (refer Start Up Procedure).
ELECTRICAL REQUIREMENTS
Electrical work must be done by a qualified
electrician. The outdoor unit must be wired
directly from a distribution board by means
of a circuit breaker or H.R.C. fuse, and a
mains isolator provided - preferably close to
the unit.
Note: DO NOT USE REWIRABLE FUSES.
Standard units are suitable for use with
thermostats with either manual Heat/Cool
selection or automatic changeover subject
to the contact ratings of the thermostats.
Refer to separate pamphlet for approved
thermostats, or contact the manufacturer's
nearest sales office.
A 24 hour power supply to the crankcase
heaters is required, otherwise the warranty
is void.
INDOOR FAN SPEED
The indoor fan speed can be 'Stepped'
or 'Continuously Variable'. The choice is
made using Switch 1 of 'DIP1' on the EC
Motor Controller. Switches 1 to 5 on 'DIP2'
determine the minimum and maximum fan
speeds.
The same 'Minimum rpm' and 'Maximum
rpm' settings apply to 'Stepped' and
'Continuously Variable'.
The default settings for DIP1 and DIP2 are
highlighted on the Wiring Schematic.
1. Stepped (DIP1 switch 1 = OFF)
Connecting the 24V AC power from the
unit’s 'HOT 24V' terminal to one (and only
one at a time) of the 'LOW 24V' / 'MED
24V' / 'HIGH 24V' terminals, selects the
'LOW' (Min. rpm), 'HIGH' (Max. rpm), or
'MED' (mid-way between) fan speed. The
transitions between speeds are smooth.
2. Continuously Variable (DIP1 switch 1=ON)
When using this method a temperzone
Analog Signal Isolator (No. 201-000-129)
must be fitted and connected as shown
GENERAL
This OPA 116 unit must be installed in accordance with all national and local safety
codes.
OPTION (Field Fitted)
1. SAT-2 Controller 230V kit
2. Electric heat kit.
INSTALLATION
Positioning
Refer to dimension diagram for minimum
clearances. If multiple units are to be placed
side-by-side then allow at least 2 m between
coil faces.
Mounting
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 beneath the unit. These springs
are not supplied with the unit.
Flexible duct connections are recommended
between the supply and return ducts and
the unit.
Condensate Drain
The condensate drain should be 'U' trapped
outside the unit. 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 pipe.
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
OPA unit's drain tray.
Air Filteration
Air filters are not supplied. If filters are to be
installed upstream on the return air side of
the unit, they should be sized twice the area
of the return air spigot.
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
Dimensions (mm)
OPA 116RKTYH
PROJECTION
Not to Scale
SUPPLY
AIR
RETURN
AIR
1154
MOUNTING CENTRES
1110
OVERALL
1200
OVERALL
OUTDOOR
AIR FLOW
1000 MIN. CLEARANCE
500 MIN. CLEARANCE
X
YZ
W
OUTDOOR
AIR FLOW
ELECTRICAL
ACCESS
PANEL
60
225
140
285
35
105
ACCESS
PANEL
80
2000 MIN. CLEARANCE
135
915
OVERALL
160
OPTIONAL
FILTER BOX
1055
860
675
MOUNTING CENTRES
12 DIA. HOLES
DRAIN
15 BSPF
12
ELECTRICAL
HOLES
25 DIA.
187
POINTLOads(kg) WEIGHT
W X Y Z (kg)
25 57 42 69 193
will draw minimal current. To correct
motor rotation, change the phasing at
the main power terminal.
3. Check the supply voltage.
4. Measure the current draw on the
compressor motor and on each fan
motor. Check all readings against the
specified values - particularly the indoor
fan amps if the unit is installed in a free
blow application.
5. Fit R410A compatible gauges and
measure the suction and discharge
pressures.
6. Test the operation of the high pressure
safety control by switching off the
outdoor air fan.
7. Test the operation of the reversing valve
by running the unit in both the heating
and cooling mode.
8. Check that the motors are running
smoothly.
9. Check the supply air flow at each outlet.
10. Touch up any outdoor unit paintwork
damage to prevent corrosion.
OUTDOOR UNIT CONTROLLER (OUC)
The Outdoor Unit Controller (OUC) 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. The OUC also has
features which protect against icing or
overheating of coils, rapid cycling of the
compressor and loss of refrigerant charge.
If the outdoor unit fans take some time
to begin rotating when the system is
powered on, or they don't appear to be
rotating appropriately while the compressor
is running, consult the OUC label on
the electrical box. If necessary, refer
to temperzone for further diagnostic
information.
MAINTENANCE
Weekly For First Four Weeks
1. Check indoor air filters (if fitted) and
vacuum or wash clean as necessary.
2. Check condensate drain for free
drainage.
3. Check compressor compartment for oil
stains indicating refrigerant leaks.
4. Check tightness of electrical
connections.
Six Monthly
1. Check the tightness of all fan and motor
mountings.
2. Check tightness of electrical
connections.
3. Check suction and discharge operating
pressures.
4. Replace indoor unit air filters (if fitted).
5. Check condensate drain for free
drainage.
Yearly
1. Check all refrigerant piping for chafing
and vibration.
2. Check the operation of electric heaters,
if fitted.
3. Check air supply at all diffusers.
4. Check for excessive noise and vibration
and correct as necessary.
5. Check for insulation and duct damage
and repair as necessary.
6. Remove lint and dust accumulation from
outdoor coil fins.
7. Touch up any outdoor unit paintwork
damage to prevent corrosion.
NOTE
The manufacturer reserves the right to
change specifications at any time without
notice or obligation. Certified dimensions
available on request.
© temperzone limited 201111/11 Pamphlet No. 3719
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