MULTI/SINGLE
Indoor unit
8. Installation
32
Ceiling Mounted cassette 4-way
In case the floor or surfaces is contact with the outdoor air directly
• If the floor of air conditioned room contact with the outside air, like the store room or garage, the floor
temperature will be decreased and users can have a cold feeling in the feet.
• In such places where the feet comes in direct contact with floors will give a cold feeling to the foot.
CAUTION
– In case there is a cold air intake,
» The duct surface may have some dew drops. So a insulation on the duct is a must.(Insulation material: a
glass wool of thickness 25 mm will be appropriate.)
• Countermeasure method
1. Use the carpet on the floor.
(compared to the tiles the carpet over it will have a 3 degree rise in temperature)
2. Insulating the floor.
3. Floor heating.
In case of high temperature or humidity between the false ceiling and ceiling slab
• Countermeasure method
– Indoor unit: Insulate the unit body with some insulation like glass wool at least 10 mm in thickness.
– Refrigerant piping: Increase the piping insulation thickness with thickness above 20 mm.
– Others: Inside the ceiling near th air tight seal places. (To escape of the humidity inside false ceiling)
• In case of places having the temperature and humidity of the
surrounding water sources(sea, river etc.)
• In case the steam is generated between the false ceiling and
the ceiling slab due to some nearby by steam source.
• In case of temperature of 30 degree and humidity above
80%, the units body as well as the piping insulation should
be strengthened. Refer to the psychrometric chart.
Discharge
Suction
Hot air
High elevation
of the ceiling
Outdoor
side
(Entering of air by
frequent opening
and closing of door)
Cold air
Indoor
Outdoor side
Outdoor side
Outdoor side
Low temperature
of the floor
(50~100mm
Insulation required)
Garage
30˚C
Psychrometric chart
Enhance additional
insulation required area
Relative humidity
Additional insulation required
Refrigerant piping
Grill for ventilation
Summary of Contents for AM07BP NSJ
Page 1: ...Indoor unit R32 Heat Pump 50 60Hz 0CTI5 02A Replaces 0CTI5 01C P No MFL67502513 ...
Page 140: ...MULTI SINGLE Indoor unit 3 Dimensions 14 Ceiling Mounted cassette 4 way ZTNW18GQLA0 CT18R NQ0 ...
Page 141: ...3 Dimensions 15 MULTI SINGLE Indoor unit Ceiling Mounted cassette 4 way ZTNW24GPLA0 CT24R NP0 ...
