Johnson Controls HVAHP060B21S - Page 54

OUTDOOR UNITS
2-36
TC-16001-rev.5
Outdoor Unit Capacity (MBH) 36 - 60
Max. Additional Refrigerant Charge: lbs (kg) 18.5 (8.4)
Comply with the following conditions when installing the unit.
1. Allowable total piping length may not exceed 984 ft (300m) because of the limitation of maximum additional
refrigerant amount as described in the following table. Make sure that the additional refrigerant volume does not
exceed the maximum additional refrigerant amount as shown below.
2. If the piping length (L3) between each multi-kit and indoor unit is considerably longer than other indoor unit,
refrigerant may not ow well, lessening performance compared to other models.
3. When installing DOAS or Ducted (EconoFresh) in the system, the height difference between indoor units must
be within 49 ft (15m).
4. When completing on-site piping, install bent piping or horizontal loop piping to absorb any expansion or
contraction due to changing temperatures.
5. It is possible to make the rst or the second main pipe branch.
(In case of including header branch, it is possible to make the rst main pipe branch.)
•
The word “Main Pipe Branch” indicates the pipe with both branches connected to another branch pipe.
NOTICE
6. A line branch and 2nd header branch cannot be connected to the 1st header branch.
Correct
IncorrectIncorrect
Main Pipe
Main Pipe
Main Pipe
Header Branch
Header Branch
Main Pipe
Header Branch
Indoor Unit
Indoor Unit Indoor Unit
Main Pipe
Header Branch
Incorrect
Incorrect
Max. 131 ft (40m)
Line Branch
1st Main Branch
2nd Main Branch
Indoor Unit
1st Main Branch
2nd Main Branch
3rd Main Branch
Incorrect
1st Main Branch
Header Branch
Correct Correct
Incorrect