YORK MINISPLIT FLOOR/CEILING Code 035T80012-000
FLOOR/CEILING
17
■ Refrigerant Piping Connections
(FLARE Connections)
To avoid alteration of unit capacities, check that piping
lengths and changes in elevation are kept to a strict
minimum.
Before connectiong the refrigerant lines, follow the
procedures below (if pre-charged connection lines are
not supplied):
- Select copper pipe diameters according to the size of
unit to be installed.
- Install the refrigeration lines, checking that no foreign
bodies get inside the piping.
- Install the flare connectors and flare the ends of the
pipes.
This unit is shipped complete with a charge of R407C refrigerant
that will be sufficient for an interconnecting piping length of 5
meters.
■ Maximum Piping Lengths
Note : Where the difference in elevation between the
indoor unit and the outdoor unit is greater than 5
meters, install an oil trap every 5 meters.
The suction line must have a 2% gradient up to the
compressor on horizontal sections.
Where piping lengths are unusually long and include a
large number of oil traps, it may be necessary to adjust
to compressor charge.
Refrigerant charge to be added per extra
metre of piping length when more than 7.5
meters.
Unit size 9 12 18 25 35 45 55
D (m) 12 15 15 22 20 24 20
L (m) 15 18 18 25 25 30 30
H (m) 10 12 12 20 22 26 26
MCC-MCH/MOC-MOH
Unit size
9 121825354555
g/m 15 15 40 40 40 40 40
Low Pressure
Gas Valve
Liquid Valve
Pressure Tap
Outdoor Unit
Indoor Unit
Gas Line
Liquid Line
R407C
High Pressure
Manifold
POWER
EMERGENCY SWITCH
TIMER
COMP
POWER
EMERGENCY SWITCH
TIMER
COMP
D
L
H
L
03_install.p65 30/5/02, 2:29 pm17
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