Technical data

187
Installation
4-3. Insulation
• Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.
•
Indoor temperature of 30°C and humidity of less than 85% is the standard condition. If installing in a high humidity
condition, use one grade thicker insulator by referring to the table below. If installing in an unfavorable conditions,
use thicker one.
• Insulator’s heat-resistance temperature should be more than 120°C.
Pipe Pipe size
Insulation Type (Heating/Cooling)
Remarks
Standard
[30°C, less than 85%]
High humidity
[30°C, over 85%]
EPDM, NBR
Liquid pipe
Ø6.35 ~ Ø9.52 9t 9t
Internal temperature is higher
than 120°C
Ø12.7 ~ Ø19.05 13t 13t
Gas pipe
Ø6.35 13t 19t
Ø9.52
19t 25t
Ø12.70
Ø15.88
Ø19.05
No gap and
upward
direction
X The insulation has to be produced
in full compliance of European
regulation reg. EEC / EU 2037/
2000 that requires the use of sheaths
insulation form without using CFC
and HCFC gases for health and
the environment.
;
Caution
Insulation cover pipe
Indoor unit
Be sure to overlap
the insulation
Insulation pipe
X Must fit tightly against
body without any gap.
;
Caution
X When installing insulation in places and conditions below, use the same insulation that is used for high humidity
conditions.
- Geological condition:
High humidity places such as shoreline, hot spring, near lake or river, and ridge
(when the part of the building is covered by earth and sand).
- Operation purpose condition:
Restaurant ceiling, sauna, swimming pool etc.
- Building construction condition:
The ceiling frequently exposed to moisture and cooling is not covered.
e.g. The pipe installed at a corridor of a dormitory and studio or near an exit that opens and closes frequently.
The place where the pipe is installed is highly humid due to the lack of ventilation system.
;
Note