الحمد لله والصلاة والسلام على رسول الله وعلى آله وصحبه أجمعين
choosing Mini-Split A/C Units Selection Tips
DETAILED TECHNICAL SPECIFICATION
Mini Split Air Conditioning Units must consist of an air cooled condensing unit
and a matching fan coil unit, factory assembled, pre-wired
pre-charged and factory tested, capable of giving the required
capacity at hot conditions, using (R407 or R410) – refrigerant
The unit should be internationally reputed ,have undisputed record of approval
Condensing unit
1) Casing
Casing must be constructed of heavy gauge M.S sheet
metal and must be firm and rigid
Casing must have an approved anti-corrosive and heat
resistant paint finish
2) Coil
Condenser coil must be made of seamless copper tube with
copper / aluminium straight fins, mechanically expanded over the tubes
3) Compressor
Compressors must be of hermetic reciprocating or rotary
type of appropriate capacity and must be suitable for operation on
415 V, three phase, 50 Hz
240 Volts, single phase, 50 Hz
110 Volts, single phase, 60 Hz .. USA
supply with a permissible voltage
variation of +/-6%. Compressors must have inherent
thermal protection or external thermal overloads
4) Condenser Fans
Condenser Fans must be multi-blade type directly mounted
on drip proof motor with Class “A” insulation and must be
suitable for operation on 415 volts, 3 phase, 50 Hz. or 240
volts, single phase, 50 Hz or 110 Volts, single phase, 60 Hz .. USA
supply with permissible voltage variation of +/-6%
Condenser fan motors must be provided
with inherent thermal protection
Evaporator Unit
Evaporator Unit must be wall-mounted / ceiling suspended type
1) Casing
Casing must be of heavy gauge M.S. Sheet, with
decorative type stove enamel finish, and must be
provided with adjustable type air deflectors.
2) Evaporator Coil
Evaporator coil must be made of seamless copper tubes
with copper / aluminium fins mechanically bonded to the
tubes. Spiral fins are not acceptable.
3) Fan
Fan must be multi-blade centrifugal, two or three speed
impeller type directly mounted on motor shaft and must
be easily accessible for maintenance. Fan motor must be
open type with Class “A” insulation, provided with
inherent thermal protection and suitable for 240 V, 50 Hz.
single phase or 110 Volts, single phase, 60 Hz .. USA power supply
4) Air Filters:
Air Filters must be of permanent cleanable and washable type and
must be easily accessible; thickness must be minimum 12.5 mm
Other requirements
pre-charged and pre-insulated refrigerant tubing as supplied
by manufacturer of the A/C Unit must be used
The insulation must be wrapped with 8-oz. canvas
and painted with two coats of weatherproof paint
في أمان الله