Inverter Water Cooled - Packaged Units - DWAI-12HAB Horizontal

DWAI-12HAB Horizontal

* Specifications in Images 

The Dunnair Inverter reverse-cycle packaged series provides a higher efficiency of our already efficient standard WPR packaged range, which are designed specifically to provide all-year round comfort to room occupants.

Our units are efficient, designed to be operated by occupiers via individual control systems, avoiding costly centralised plant.

The inverter water-cooled range is an ideal choice for projects that need a large number of units such as high-rise offices or hotel buildings – where different zone temperature are required throughout the building.

Our inverter technology will save power, take less time to reach desired temperature and oscillate closer to the desired temperature over fixed speed models.

Soft start ensures lower start up current and associated lower energy consumption. This market leading product now provides a viable alternative to VRF systems. Our comprehensive range of inverter units from 4kW to 25kW allows all types of application providing a lower running cost throughout the entire life cycle of the unit.

Compact and reliable, these units can be installed above ceilings, or in other concealed spaces, saving valuable floor space and providing conditioned air direct to required locations.

DWAI Series units are designed to be used with simple duct layouts. To take maximum advantage of this feature, units should be located as close to the space to be air conditioned as acoustic criteria allows.

Multiple small units, utilizing minimal duct lengths, prove more economical than a single
large central ducted unit.

Designed also to suit different climates, the DWAI units are
available in Reverse cycle.

In office buildings, a DWAI unit system can provide the ideal off-peak system for occupied areas when the main system is not running, e.g. night time, weekends, holidays.

Optional Features

Standard manufactured units may not meet the requirements of your system design. Dunnair always
welcome enquiries for special air conditioning equipment.

Available options are listed below:

• Stainless steel drip tray
• 50mm thick insulation
• VSD on supply air fan
• Higher ESP (external static pressure) up to 500pa
• 2 stages or more depending on size of the unit
• Belt drive instead of direct drive fan
• All copper coils
• BMS output/input connection.

Dunnair specialises in manufacturing equipment to suit the
applications.

Unit Protection

Units are fitted with a high pressure lockout protection.

These protect the unit in the event of either water flow failure in cooling mode or fan failure in heating mode.

Sensors protect against low air coil temperature and loss of refrigerant. Units include an anti-rapid cycle timer for compressor on/off protection.

DWAI reverse cycle units also have a low refrigerant temperature safety thermostat to protect against icing up of the water within the unit’s condenser on heating mode and a pump flow verification relay to protect individual units from a loss of water flow.

Convenient lockout contactor resetting is simply achieved by turning the power to the unit off and then on again, avoiding the need to gain access to each unit if the cause is failure of central water supply. Lockout protection will also reset when the thermostat switches on, or is switched to the dead zone.

Each compressor has internal overload protection.

The DWAI reverse cycle version has a low refrigerant temperature limit switch and a reverse cycle valve.

For additional information + enquiries please contact our Team Today