Technical Manual Downflow - Airedale International Air Conditioning
Technical Manual Downflow - Airedale International Air Conditioning
Technical Manual Downflow - Airedale International Air Conditioning
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
GENERAL<br />
6<br />
-DF<br />
General Description<br />
STANDARD FEATURES<br />
Chilled Water Coil<br />
(CW Models)<br />
Fan & Motor Assembly<br />
Size 6 - 25<br />
(Direct Drive)<br />
Precision <strong>Air</strong> <strong>Conditioning</strong><br />
<strong>Technical</strong> <strong>Manual</strong> : 6259014 v1.3.0 02_2013<br />
Precision <strong>Air</strong> <strong>Conditioning</strong><br />
Large surface area coil(s) ideally positioned to optimise airflow and heat transfer,<br />
manufactured from refrigeration quality copper tubes with mechanically bonded<br />
aluminium fins.<br />
Fins are coated with a non-stick acrylic film (hydrophilic) which provides additional<br />
corrosion protection and efficient surface water removal for improved performance.<br />
The cooling coil is mounted over a full width stainless steel condensate tray.<br />
For control of water flow, a 3 port, raise/lower type, modulating mixing control valve is<br />
fitted as standard.<br />
Maximum operating pressure 10bar. Factory pressure tested to 20Bar.<br />
Sweat copper pipe for brazed connection as standard. Optional threaded connections<br />
available refer to Optional Extras - General.<br />
Units utilise a double inlet, forward curved, direct drive centrifugal fan with integral shaft<br />
mounted motor which is statically and dynamically balanced for quiet operation. Impellers<br />
and casings are galvanised for protection against corrosion. The integral motor runs in<br />
sealed for life, lubricated bearings and features automatic thermal overload protection.<br />
Fan speed, airflow and external static pressure are controlled by the use of a manually<br />
adjustable voltage controller via the microprocessor display keypad which offers easy on<br />
site adjustment.<br />
Adjustable by increments of 1% within + / - 10% of the set point.<br />
Sizes 6 - 17 Units have a single fan and motor assembly.<br />
Sizes 22 - 25 Units have 2 fan and motor assemblies.<br />
Size 26 - 60<br />
(Belt & Pulley)<br />
Double inlet forward curved centrifugal fan(s) with galvanised impellers and casing.<br />
Mild steel fan shaft with lifetime lubricated ball bearings.<br />
Fan and drive assembly design is based on a minimum of 25,000 hours life expectancy.<br />
Each fan assembly is separately driven by a high efficiency air cooled motor through a<br />
pulley and ‘V’ belt drive. The complete motor assembly is mounted on a fully adjustable<br />
platform for belt tensioning. Motor specification conforms to Efficiency Class 2 (EFF2).<br />
With integrated plummer block bearings (4kW motors only).<br />
Sizes 26 - 45 Units have a single fan and motor assembly.<br />
Sizes 50 - 60 Units have 2 fan and motor assemblies.
Change language