York MKL/MKM 25 Technical Manual page 13

Note
• Avoid using the short duct on which the air discharge grille can be completely closed, to prevent evaporator freezing.
• in order to prevent condensation forming, be sure that there is sufficient thermal insulation and no leakage of cool
air when installing the short duct.
• Keep the introduction of fresh air intake within 20% of total air flow. Also provide a chamber and use a booster fan.
Sealing Material
• It is possible to seal one of the four air discharge outlet. (sealing two or more air discharge outlet could cause a
malfunction)
• Remove the front panel and insert the sealing material into the air discharge outlet on the indoor unit to seal the air
outlet.
• The sealing material is the same length as the longer air discharge outlet. If it is desired to seal the shorter air
discharge outlet, cut the scaling material to shorten it.
• push the sealing material in about 10 mm beyond the bottom surface of the indoor unit so that it does not touch the
air louver. Be sure not to push the sealing material in any farther than about 10 mm.
Fresh Air Intake for 4-way Cassette Type indoor Units
1. Connection Position of Fresh Air Intake Duct
Fresh air can be taken in by connecting the duct
Back
Front
2. This unit cannot draw in fresh air by itself.
NOTE:
All parts of the above figure should be field-supplied
03_MKL-MKM.p65
2
114
120
203
Connection Position of Fresh Air Intake Duct
Duct (To be made of only non-combustible materials)
Thermal Insulation
(Non-combustible Materials)
Ø
Damper
Duct Fan
Inspection Panel
13
to the position shown in the drawing below.
4-M4
(Holes for self-tapping screws)
Fresh air Intake orifice
(Ø 150 Knockout Hole)
It must be connected to a duct containing
a fan and control damper.
Air Filter
Fresh Air Intake Hood with Gellary
(Attached Drip-Proof Hood Type)
17/6/02, 4:12 pm
YORK CASSETTE (EN) 035T76015-000
13
CASSETTE