22
MULTI V
Modular Heat Pump
Installation Guide
8. Caution For Refrigerant Leaks
The installer and system specialist shall secure safety against leakage according to local regulations or standards.
The following standards may be applicable if local regulations are not available.
8.1 Introduction
Though the R410A refrigerant is harmless and incombustible itself , the room to equip the air conditioner should
be large to such an extent that the refrigerant gas will not exceed the limiting concentration even if the refrigerant
gas leaks in the room.
8.1.1 Limiting concentration
8.2 Checking procedure of limiting concentration
Check limiting concentration along following steps and take appropriate measure depending on the situation.
8.2.1 Calculate amount of all the replenished refrigerant (kg) per each
refrigerant system.
Calculate amount of all the replenished refrigerant (kg) per each refrigerant system.
Note
In case one refrigerant facility is divided into 2 or more refrigerant systems and each system is independent,
amount of replenished refrigerant of each system shall be adopted.
Limiting concentration is the limit of Freon gas concentration where immediate measures can be taken without
hurting human body when refrigerant leaks in the air. The limiting concentration shall be described in the unit of
kg/m3 (Freon gas weight per unit air volume) for facilitating calculation.
Limiting concentration: 0.44kg/m
3
(R410A)
Amount of replenished refrigerant
per one outside unit system
+ Amount of additional replenished
refrigerant
=
Total amount of replenished
refrigerant in refrigerant facility
(kg)
Amount of replenished refrigerant
at factory shipment
Amount of additionally replenished
refrigerant depending on piping
length or piping diameter at
customer
Outdoor
Unit
(No.1 system)
Flow of
refrigerant
Indoor unit
Room where refrigerant leaks
(Refrigerant of the whole No.1
system flows out.)
Summary of Contents for ARUN050GME0
Page 1: ...Modular Heat Pump R410A 50Hz 5CVD0 01A P No MFL67474053 ...
Page 2: ...MULTI V S Modular Heat Pump General information Product Data Installation Guide ...
Page 11: ...MULTI V Modular Heat Pump 3 Dimensions 6 Product Data GG B8 Chassis ARUN050GME0 ...
Page 27: ...22 MULTI V Modular Heat Pump Product Data 10 Wiring Diagrams ARUN050LMC0 ARUN050GME0 ...