Panasonic Urban Multi MX1R Series, Service Manual, Page: 430 / 643

PACD011001C2 Product Outline
General Information UM Combination “MA1R Series” Using R-407C 409
1.2 Outline of New Series Products
In addition to the use of a new refrigerant (R407C), the new series products incorporate a function-unit-less structure
for significantly improved flexibility and ease of installation.
System outline
„
No function unit
All models combine Main units and Sub units or main units, sub units and Plus units.
„
All models use a new refrigerant with low ozone destruction potential and global warming potential to
minimize environmental loads (see Feature (1)).
With a value of 1 given to the ozone destruction potential and global warming potential of the R11
refrigerant, smaller values mean less environmental impact.
Feature (1)
„
Use of new refrigerant (R407C) that does not deplete the ozone layer
< Global warming potential >
Water vapor and carbon gas allow solar rays to pass through, but they hinder the penetration of heat rays
from the surface of the earth. Methane, chlorofluorocarbons and dinitrogen monoxide have similar
characteristics. When the amounts of these gases in the atmosphere increase, heat that normally escapes
through the atmosphere remains near the earth's surface, thus increasing the temperature of air. The
degree of the effect to the earth caused by the atmospheric temperature rise due to these gases is
numerically expressed by global warming potential (GWP).
Feature (2)
„
Dramatically improved flexibility and ease of field installation by function-unit-less structure
--- Simpler piping work at installation sites
--- Reduced unit installation area
„
Simpler piping work at installation sites
Refrigerant Condensing
pressure
(MPa) Capacity
∗
1 COP Ozone
destruction
potential Global
warming
potential
R22 Single-component 1.88 100 100 0.05 0.43
R407C Non-azeotropic 2.05 98 90~97 0 0.38
∗
1 Capacity value based on theoretical refrigerating cycle
20HP 30HP
Pipe connecting locations 6 joints 6 joints
Standard series
General name
Main unit name
Sub unit name PA~MA
CU~MA
CU~MB
Main
units
Sub
units
(V0800)
Main unit
Sub unit
Function Unit-less system
Urban Multi
30HP
Inverter compressor
(10 HP)
Constant-speed
compressor
(V0802)