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Summary of Contents for TemperZone UNIT CONTROLLER 7
- Page 1 Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 UNIT CONTROLLER 7 (UC7) Operation & Installation Air-to-Air Units Date: 20 March 2015 Issue: 9 Page 1 of 20...
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Page 2: Table Of Contents
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 Contents 1. Connections, air-to-air unit ..................3 2. Functions assigned to SSR1, SSR2 and AUX ............3 3. Input and output signals .................... 4 3.1. Temperature sensor inputs ...................... 4 3.2. -
Page 3: Connections, Air-To-Air Unit
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 Note: The information in this document applies to UC7 controllers programmed with software version 4.91 or later. To find the UC7 software version: Turn on mains power to the UC7 controller and observe the display. -
Page 4: Input And Output Signals
0.5 to 4.5V 0 to 3450kPa (digital scroll compressors) Not all temperzone air conditioning units are equipped with pressure transducers. If no pressure transducer is present then the corresponding switch input (IN#1 and/or IN#2) is configured as an input for a pressure switch. Refer to sections 3.3 and 3.4. -
Page 5: Switched Signal Type Thermostats
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 3.6. Switched signal type thermostats Signals from a thermostat that provides switched signals normally connect to the following input signals: COMP HEAT (not required for cooling-only installations) HIGH – MEDIUM – LOW (required only when the UC7 controls the indoor fan) -
Page 6: Digitally Communicating Thermostat
3.7. Digitally communicating thermostat Use shielded twisted pair suitable for RS485 to connect a digitally communicating thermostat. The UC7 supports the Temperzone TZT-100 thermostat. Other thermostats can be added on request. Connect the twisted pair wires to terminals “B2” (-) and “A2” (+). -
Page 7: Electronic Expansion Valves
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 3.8. Electronic expansion valves The UC7 can control up to two electronic expansion valves (EXV) via connectors EXV1 and EXV2. The expansion valves must be 12V unipolar types. The connectors must be compatible with JST type XH and have either 5 pins or 6 pins. -
Page 8: Optional 0-10V Analogue Input
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 3.11. Optional 0-10V analogue input Units equipped with a digital scroll compressor are capable of variable duty. The required duty can be set in three ways: Automatic, only in combination with the TZT-100 thermostat ... -
Page 9: Dip Switch Selections
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 4. DIP switch selections Table 1, DIP switch functions for switches 1 to 13. Switch Function Indoor air flow (also refer to chapter 9: Dry mode) Variable indoor air flow: Indoor fan performs a warm start when unit starts heating. - Page 10 Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 Electronic expansion valve type How to recognise the valve type Dunan DPF series removable black coil Zhe Jiang Sanhua DPF series non-removable metal coil Carel E2V series (& E3V series with unipolar coil)
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Page 11: Test Mode
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 5. Test mode To activate test mode follow these steps: Apply power to the unit and wait until the power-on sequence is successfully completed. Ensure the thermostat is ‘OFF’ (COMP and HEAT signals must be OFF). -
Page 12: Set-Up Mode
In setup mode it is possible to change the modbus address of the UC7 controller. The default modbus address of the temperzone UC7 controller is 44. The procedure to change the address is as follows: Turn mains power on. -
Page 13: Dry Mode (De-Humidification)
Standard cooling mode: This is the default mode for Temperzone units with UC7 controller when no other cooling mode is activated. In this mode the unit does not actively control the indoor coil temperature. The supply air is de-humidified only when the indoor coil temperature remains below the dew point. -
Page 14: Enabling The Tzt-100 Thermostat For Dry Mode
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 9.1. Enabling the TZT-100 thermostat for dry mode Note: This option is available only on TZT-100 thermostats with software version 2.31 or later. If the TZT-100 thermostat is programmed with an earlier software version then refer to paragraph 9.2 to enable Dry mode using input D2. -
Page 15: Advanced Dry Mode
In such running conditions it is necessary to periodically remove the ice from the outdoor coil. To detect presence of ice on the outdoor coil all Temperzone reverse cycle units have a temperature sensor fitted onto the outdoor coil. Using information from this sensor the logic for de- icing the outdoor coil is as follows: When the unit is heating and the de-ice sensor reports that the outdoor coil temperature is below +1°C a... -
Page 16: Units With More Than One Uc7
(BMS). Alternatively, the connections can be used to connect a data logging system. The correct connections are shown above. Temperzone has available a low cost data logger specifically designed for use with temperzone units. This data logger can be connected as shown above. -
Page 17: Faults
Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 In addition to the messages shown above, it is possible to use the display to monitor some pressures and temperatures while the unit is in normal mode or in commissioning mode. This is available regardless whether the compressor is on or off. - Page 18 Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 Display Meaning Outdoor fan fault (no serial communications) Indoor fan fault (no serial communications) Low pressure transducer fault (will show as LP) High pressure transducer fault (will show as HP) Suction line temperature sensor fault...
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Page 19: Specifications
Any input signal that is referenced to EARTH and that needs to connect to a circuit external to the temperzone unit should be isolated by a suitable means, for example a relay. Typical examples of this are the remote On/Off input, DRED inputs, the IN#1 and IN#2 inputs. - Page 20 Temperzone UC7 Operation & Installation, Air-to-Air Units, Issue 9 IN#1 and IN#2 Designed to be operated by isolated voltage free DRED inputs D1, D2, D3 contacts. Remote On/Off input Open circuit voltage: 3.3V DC typical Closed circuit current: 3.3mA DC typical V1 and V2 outputs Provide 0-10V DC output.
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