Johnson Controls HVAHP036B21S - Installation, Piping, and Wiring

OUTDOOR UNITS
2-34
TC-16001-rev.5
NOTES:
1. The connectable indoor unit capacity ratio can be calculated as follows:
Connectable Indoor Unit Capacity Ratio = Total Indoor Unit Capacity / Total Outdoor Unit Capacity
2. For the system under which all the indoor units operate simultaneously, the total indoor unit capacity
should be less than the outdoor unit capacity. Otherwise, a decrease in operating performance and an
increase in the operating limit can result in an overload.
3. For the system under which all the indoor units do not operate simultaneously, the total indoor unit
capacity is available up to 130% against the outdoor unit capacity except for 60 MBH.
4. A maximum number of connectable indoor units differs depending on the model, capacity, environment
and installation location of connected indoor units. Refer to “Engineering Manual” for the selection.
5. When operating the outdoor unit in cold areas with temperatures of 14
o
F (-10
o
C), or under the high
heating load conditions, the total indoor unit capacity should be less than 100% of the outdoor unit
capacity.
6. The airow volume for indoor units of 6 and 8 MBH is set higher than that for indoor units of 12 MBH
or more. Make sure to select appropriate indoor units for installation where cold drafts may occur during
heating operation.
7. Regarding the limitation of connected to Ducted (EconoFresh) type, refer to the “Engineering Manual” for
Ducted (EconoFresh).
2.13 Combination of Indoor Unit and Outdoor Unit
•
The number of indoor units that can be connected to an outdoor unit is as dened in Table 2.3:
Comply with the following conditions when installing the unit.
Outdoor Unit Capacity
(MBH)
Minimum Capacity at
Individual Operation
(MBH)
Maximum Number
of Connectable I.U.
Connectable Indoor Unit
Capacity Ratio
Maximum
*1)
Minimum
36
6
6 130% 60%
48 8 130% 60%
60 8 105% 60%
*1) When the outdoor air temperature is 109
o
F (43
o
C) or warmer during the outdoor unit cooling operation, the
maximum connectable indoor unit capacity ratio is 100%.
Table 2.3 System Combination
Table 2.2 Indoor Unit Model List
Indoor Unit Type
Capacity (MBH)
6 8 12 15 18 24 27 30 36 48 54 60
Ducted
Ducted (High Static)
(H,Y)IDH_B21S
(H,Y,C)IDH_B22S
Ducted (Medium Static)
(H,Y,C)IDM_B21S
(H,Y,C)IDM_B22S
Ducted (Slim) (H,Y,C)IDS_B21S
Ducted (EconoFresh) (H,Y,C)IDM_B21E
Air Handler with DX-Kit (H,Y,C)MAHP_(B,C,D)21S
Non-
Ducted
Ceiling-Mounted 4-Way Cassette (H,Y,C)IC4_B21S
Ceiling-Mounted 4-Way Cassette Mini (H,Y,C)ICM_B21S
Ceiling-Mounted 2-Way Cassette (H,Y,C)IC2_B21S
Ceiling-Mounted 1-Way Cassette (H,Y,C)IC1_B21S
Wall-Mounted TIWM_B21S
Ceiling Suspended (H,Y,C)ICS_B21S
Floor Exposed (H,Y,C)IFE_B21S
Floor Concealed (H,Y,C)IFC_B21S
: Available