Loading ...
Loading ...
Loading ...
MULTI
F
MAX
MULTI
F
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Outdoor Unit Model
Main Piping Length Branch Piping Length
Chargeless Pipe Length of
Main Pipe (L) (ft.)
Additional Charge Needed
(a) (oz./ft.)
Chargeless Pipe Length
per Branch Pipe (B) (ft.)
Additional Charge Needed
(b) (oz./ft.)
LMU480HV 16.4 0.54 16.4 0.22
LMU540HV 16.4 0.54 16.4 0.22
LMU600HV 16.4 0.54 16.4 0.22
Multi F MAX Outdoor Unit Piping Specifications
Additional charge (lbs.) = (Total Main Piping Length [A] - Chargeless Pipe Length of Main Pipe [L]) x a
+ (Installed Length of Branch [B1] – Chargeless Pipe Length [B]) x b
+ (Installed Length of Branch [B2] – Chargeless Pipe Length [B]) x b
+ (Installed Length of Branch [B3] – Chargeless Pipe Length [B]) x b ...
- CF (Correction Factor) x 3.53
• Number of installed length of branches depends on system specifications.
• CF = Maximum number of connectible indoor units – Total number of connected indoor units
MULTI F MAX REFRIGERANT
CHARGE WORKSHEET
LG Multi F MAX outdoor units ship from the factory with a charge of R410A refrig-
erant. A trim charge will need to be added to take into account additional piping
length.
To determine the additional refrigerant that is needed, apply the formula below,
and record the results. If the total additional refrigerant charge value is a negative
number, then an additional trim charge does not need to be added to the system.
Outdoor Unit Factory Charge lbs. of R410A
LMU480HV 9.7
LMU540HV 9.7
LMU600HV 12.3
Multi F MAX Outdoor Unit Factory Charge
(________[A] – 16.4) x 0.54 (________)
+ (________[B1] – 16.4) x 0.22 + (________)
+ (________[B2] – 16.4) x 0.22 + (________)
+ (________[B3] – 16.4) x 0.22 + (________)
+ (________[B4] – 16.4) x 0.22 + (________)
+ (________[B5] – 16.4) x 0.22 + (________)
+ (________[B6] – 16.4) x 0.22 + (________)
+ (________[B7] – 16.4) x 0.22 + (________)
+ (________[B8] – 16.4) x 0.22 + (________)
- ________CF x 3.53 - (________)
= ________ Additional Charge (oz.)
Multi F MAX Refrigerant Charge Calculations
Note:
Loading ...