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10. CONTROLS

10.1 Modbus Connections

The bridging wires should be screwed to terminals A and B separately and should be long enough to be used as the

bridging cables between the 24 V hot terminal and compressors 1 and 2. If in the event a TZT is not used, they can stay

there and not be of anyone’s concern. If on the other hand a TZT with Modbus is used, the installing contractor will see

the label and wires and then wire them to the 24 volt terminals.

RS485 Terminal on UC6

Lower Board Connections

Serial Card BMS

TZT Controller Installation
If a TZT100 controller is used in Modbus format these cables should be

wired to the following terminals on the low voltage input terminal strip
24V Hot terminal to Comp 1

Comp 1 terminal to Comp 2 terminal
Please disregard this instruction if non Modbus controllers are used.

12V

GND

B-

A-

Содержание OPA 465RKTG-P

Страница 1: ...supplied with the unit Flexible duct connections are recommended between the supply and return ducts and the unit Unit is shipped with wooden blocks installed under the compressors Ensure these blocks are removed from the compressor feet prior to starting the unit not required for operation Factory filter slides are fitted access to the filter access door should be considered when designing return...

Страница 2: ...stribution 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 The OPA ECO is provided with a 24VAC control circuit thermostat TZT Optional on off switch and or time clock field supplied and fitted The control transformer 240V primary is used for countries with 230 240V power supply Alternatively control can b...

Страница 3: ...f all electrical connections and sign the check label 10 Touch up any outdoor unit paintwork damage to prevent corrosion 5 3 Commissioning EC Plug Fans Six Keys service interface function description 1 Alarm Press Alarm button to access alarm operation a View the active alarm b Logger alarm data 2 Prg Press program button enter to main menu 3 Esc Return to menu s previous level 4 Enter Press the E...

Страница 4: ...e system has an adequate amount of refrigerant Signals used for this check are mid coil temperatures TS1 TS2 suction temperatures ST1 ST2 and discharge line pressures HP1 and HP2 if present The check is not made during the first 5 minutes after a compressor is started to allow pressures and temperatures to settle If the compressor is a variable speed type or a digital scroll type then the check is...

Страница 5: ... communications port then an alarm is generated Examples of such devices are a TZT 100 thermostat a Carel Power inverter Display indication for communications fault letter C flashing 7 TEST MODE Test mode can only be activated when both compressors are OFF To start test mode press and hold down the push button on the lower board between 1 and 5 seconds In test mode each output is activated for 5 t...

Страница 6: ...00 200 300 AIR FLOW l s AVAILABLE EXTERNAL PRESSURE Pa 2 5 m s Face Velocity 400 500 2500 NOMINAL 9V 8V 7V 5V 6V 4 0 2 0 1 2 0 8 4 6 4 0 0 6 2 6 1 5 0 8 1500 2000 2500 3000 3500 4000 0 100 200 300 AIR FLOW l s AVAILABLE EXTERNAL PRESSURE Pa 2 5 m s Face Velocity 400 Nominal 500 8V 7V 9V 10V 6V 2 3 1 5 1 0 3 5 2 5 1 1 3 4 0 6 0 7 1 7 3000 3500 4000 4500 5000 0 100 200 300 AIR FLOW l s AVAILABLE EXT...

Страница 7: ...If on the other hand a TZT with Modbus is used the installing contractor will see the label and wires and then wire them to the 24 volt terminals RS485 Terminal on UC6 Lower Board Connections Serial Card BMS TZT Controller Installation If a TZT100 controller is used in Modbus format these cables should be wired to the following terminals on the low voltage input terminal strip 24V Hot terminal to ...

Страница 8: ...Check system operating pressures and history using PDG mini service interface tool fitted to all ECO machines 12 2 Three Monthly or every 1200 hrs of operation Check the indoor unit s indoor EC motor and plug fan operation and adjust if necessary using PDG mini service interface tool fitted to all ECO machines 12 3 Six Monthly 1 Check the tightness of electrical connections 2 Check the tightness o...

Страница 9: ...nditioning heat hump unit seems to work properly Many new buildings especially a commercial buildings have a large amount of concrete and other structural materials that are generally cold and full of moisture This is most evident in the winter when trying to heat the building from scratch 13 5 Unit is leaking water Check the drain trap vent slope before moving on to Water carry over Reduce the ma...

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Страница 16: ...uritius Bangalore Bangkok Hanoi Cambodia South Pacific Islands Bangladesh temperzone australia pty ltd Head Office Sydney 14 Carnegie Place Blacktown PO Box 6448 Delivery Centre Blacktown NSW 2148 Australia Email sales temperzone com au www temperzone biz Sydney 02 8822 5700 Brisbane 07 3308 8333 Melbourne 03 8769 7600 Adelaide 08 8115 2111 Perth 08 6399 5900 Townsville 07 4774 3506 Launceston 03 ...

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