General Information (Features) - Johnson Controls (H,Y,C)IDM048B21E Engineering Manual

1. General Information (Features)

Johnson Controls proudly introduces new Variable Refrigerant Flow (VRF) air conditioners, a highly-efficient
and reliable air-conditioning system. Recently, increased numbers of buildings are requiring "intelligent"
facilities that include communication networks, office automation, and a comfortable environment. In
particular, a comfortable environment is becoming more of a year-around requirement in office buildings.
The VRF multi-split system air conditioner meets these requirements. The proven combination of the scroll
compressor and inverter provides the best air conditioning for small and medium office buildings.
■ VRF System
Johnson Controls has developed the VRF system with its customers in mind.
This system, which is unique in the world, allows the interconnection of indoor units for all our VRF air
conditioners.
This system provides the consumer with greater flexibility for installation, which means that the air-
conditioning systems will integrate better within complex facility structures.
■ Ducted Medium Static (EconoFresh) Type Models
(H,Y,C)IDM030B21E, (H,Y,C)IDM036B21E and (H,Y,C)IDM048B21E with EF-456NE
● Wide Range Line-up
Indoor Unit Type
Ducted Medium Static (EconoFresh)
: Available
● Improvement of Energy-Saving
Air renewal has a downside of increased energy consumption. These models save energy while renewing
room air and reducing levels of CO
(1) Supplies fresh new air into the room while keeping the correct indoor temperature, and also provides
natural cooling for increased energy saving (reducing energy consumption).
(2) Allows inflow of fresh air into the room through the indoor unit, even when the thermostat is switched
off (Thermo-OFF*). Depending on the supply air and outlet air temperatures, this unit works like an
intelligent system, controlling the air flow by modifying the position of the damper.
NOTE:
Thermo-On: The outdoor unit and some indoor units are running.
Thermo-OFF: The outdoor unit and some indoor units stay on, but don't run.
(3) Effectively increases the installation performance when the outdoor temperature is lower than the
room temperature (in cooling mode), allowing the inlet of fresh air and cooling to the set temperature
without activating the outdoor unit. For example, it can supply up to 100% of fresh air and is able to
provide "natural cooling" through a damper when the outdoor temperature is lower than the set indoor
temperature (in cooling mode), leading to significant energy savings particularly in spring and autumn.
(4) EconoFresh can operate with CO
NOTE:
The enthalpy sensor and CO
The enthalpy sensor and CO
Fresh process is activated.
TC-16004-rev.2
VRF Air Conditioners
Table 1.1 Indoor Unit Type List
6
(H,Y,C)IDM_B21E
while also eliminating unpleasant smells, smoke and pollution.
2
or enthalpy sensors to control the air quality in the room.
2
gas sensor cannot be installed together.
2
gas sensor have no effect on the EconoFresh operation when the All
2
Capacity (MBH)
8 12 15 18 24
FEATURES
30 36 48
1-1