Equipment Connections
Ductwork
• Air distribution ductwork must be designed to allow
for the specified air flow without excessive pressure
levels. The unit should be situated as close as
possible to the point of use to prevent unnecessary
long runs of ductwork.
• Sheetmetal ductwork is recommended for use with
all Armcor Air Solutions equipment.
• Ducts should be insulated in accordance with BCA
Section J-5.
•
Fan inlet conditions can affect the fan performance,
particularly where duct bends cause a non-uniform
flow and swirl at the inlet. To reduce losses due
to fan systems effect, adequate length of straight
duct between any elbow and the fan inlet should be
provided or turning vanes used in the elbow.
• Poor fan outlet conditions will also affect the fan
performance. Armcor recommends a minimum of
1000mm of straight duct directly after the fan outlet.
Filters
•
50mm panel filters are a minimum recommendation
for all equipment.
• Filters
MUST
be fitted to the fresh air inlet. Where
there is no provision for filters within the unit, the
installing contractor is responsible to incorporate
filters in the ductwork system external to the unit.
•
It is recommended that temporary disposable filters
are used during construction & commissioning.
•
Where a Heat Exchanger is incorporated in the
equipment, warranty will be void if filters are not
fitted.
IMPORTANT: NEVER OPERATE A UNIT WITHOUT FILTERS
FITTED TO THE FRESH AIR INTAKE.
Electrical Requirements
•
The power requirement and voltage are detailed on
the equipment technical specifications (available at
armcor.com.au
) and are on the identification/serial
number plate attached to each unit.
•
An electrical diagram is attached to the electrical box
on the unit.
Mains Power Supply and Fusing
•
A single-phase power supply rated at 240v (+/- 5%)
50Hz or a 3-phase power supply rated at 415 volts is
required to operate the unit within manufacturer’s
tolerance. Check the name plates for correct voltage.
•
We recommend an isolator be mounted externally
to the unit (not supplied) and a suitably sized
circuit breaker mounted back at the distribution
board to provide local isolation during service and
maintenance periods.
• Main cables and control circuit wires are to be
connected as per wiring diagram.
•
All wiring must comply with relevant local wiring
regulations.
•
The unit requires a main circuit breaker capable of
handling the full load of the unit and selected in
accordance with SAA Wiring Rules.
•
All wiring is to be independently colour coded.
•
Single phase fan motors are internally protected and
there is no need for external overloads.
OAP – Outside Air Package Units Installation and Operation Manual 2021 7
