Technical support documents
Digital Scroll Compressor Video
Support Info - How It Works
How digital scroll compressors work
Quality Coating - Process Specification
Product manufactured in NZ and sold in Australia
Download PDF July 2015
Unit Controllers (UC6, UC7, UC8 & IUC)
Split & Packaged Systems
Download UC6 client wiring November 2013
Download UC6 Features & fault codes July 2013
Download UC6 Operation & installation November 2012
Download UC6 Modbus communications
Download UC6 BACnet communications
Download UC7 Client wiring - Ducted Split Systems September 2012
Download UC7 Operation & installation - Air-to-Air March 2014
Download UC7 Operation & installation - Hydronics March 2014
Download UC7 Fault codes May 2013
Download UC7 Quick reference operation and fault diagnosis October 2014
Download UC7 Troubleshooting guide October 2012
Download UC7 Modbus communications
Download UC8-IUC-tstat connection wiring : Air-to-Air
Download UC8 Operation manual : Air-to-Air
Download UC8 Operation manual : Hydronics
Download UC8 Fault and Display Messages : Air-to-Air
Download UC8 Fault and display messages : Hydronics
Download UC8 Troubleshooting guide
Download UC8 Quick reference operation and fault diagnosis October 2015
Download UC8 Modbus communications
Download UC8 Master-Slave connection
Download IUC Quick reference & fault diagnosis November 2015
Download IUC Operation manual
Outdoor Unit Controller (OUC) Video
Support Info (2007–2014 models)
Outdoor Unit Controller (OUC): Program 5D, Issue 4
Split & Packaged Systems
Download OUC Operation & Fault Diagnosis Date Updated: November 2006
Download OUC Support Information Date Updated: February 2006
Outdoor Unit Controller (OUC): Program 4D, Issue 3
Split & Packaged Systems
Download OUC Operation & Fault Diagnosis Date Updated: January 2005
Outdoor Unit Controller (OUC): Issue 2
Split & Packaged Systems
Download OUC Operation & Fault Diagnosis Date Updated: August 2004
Outdoor Unit Controller (OUC): Issue 1
Split & Packaged Systems
Download OUC Operation & Fault Diagnosis Date Updated: July 2004
SAT Controllers
For support info, enter 'SAT' in the Model Search box above
Solving the Mysteries of Economisers
Support Info
Download PDF Date Updated: December 2009
Flexible Ducting Installation Guide
Split Systems Guide Sheet
Download PDF Date Updated: November 2003
Commissioning Sheets - Ducted DX Systems
R410A models: Date Updated: March 2010
Download OSA 55-280RK
Download OSA 298-950RK
Download OPA 116-201RK
Download OPA 225-960RK
Download OPA ECO Series (UC6)
Download OPA 1370,2000RK
Download PA Series
Models released from June 2015: refer Installation Instructions
Water Sourced Units Applications Manual
Water Sourced Packaged Units (HWP-UC8 Series)
Download PDF Date Updated: May 2018
High Percentage Fresh Air Systems
Split & Packaged Systems Applications Notice
Download PDF Date Updated: October 2001
Kulthorn Motors as Replacements
Split & Packaged Systems Applications Notice
Download PDF Date Updated: July 2008
DRED (Demand Response Enabling Device)
DRED provides a method by which a controlling authority, most likely a power supply company, can limit the amount of power that an air conditioner can consume in comparison to its nominal full load power consumption. The aim is to reduce overall power consumption to the supply network at critical peak load times. A ripple is passed down the power supply which triggers a response. Not dissimilar to what some power companies do when controlling peak demand for electric water heaters in New Zealand.
DRED is capable of demanding three different levels of response from the air conditioner, identified as DRM1, DRM2 and DRM3.
DRM1 which is 'compressor off' is the minimum required to meet the Australian standard AS4755.3.1.
DRM2 must not exceed 50% of Capacity kW
DRM3 must not exceed 75% of Capacity kW
Most manufacturer's have been gradually including this facility in their new products.
All new Temperzone units that include a UC6 or UC7 Controller are DRED:DRM1 compliant.
Temperzone has a DRED module which is designed to fit any older temperzone units installed with an Outdoor Unit Controller (OUC) version 5, or older, and thereby make it compliant with the Australian standard AS4755.3.1.
For Hitachi techncial information visit the temperzone/ Hitachi sites
Hitachi Australia website
Hitachi New Zealand website