Panasonic U-72MF2U9 Technical Data Manual page 29

1. Model Selecting and Capacity Calculator
1. Model Selection and Capacity Calculator
2. Indoor unit capacity correction coefficient
Indoor unit capacity correction (BTU/h) = (G) × ( I ) × (D)
Indoor unit capacity correction ≤ (G)
(E) Capacity correction for the indoor unit temperature conditions (BTU/h)
From the graph of indoor unit capacity characteristics on page " 2-15 ", read the capacity correction coefficient for indoor unit
temperature conditions.
(E) = Capacity correction coefficient for indoor unit temperature conditions × Rated capacity
(F) Calculate the Capacity distribution ratio (%)
(E)
(F) =
(E)
(G) Distribute the outdoor unit capacity among each indoor unit (BTU/h)
(G) = (A) × (F) (BTU/h)
(H) Capacity correction coefficient for tubing length and elevation difference (%)
From the graph of capacity change characteristics resulting from tubing length and elevation difference on page " 2-15 ",
read the capacity correction coefficient.
( I ) Capacity correction coefficient for outdoor unit (%)
( I ) = (H) x (C)
In the case of (I) ≤ 100%, loss of capacity resulting from the tubing length can be supplied by the outdoor unit capacity.
When the outdoor air temperature is lower in cooling mode
When the outdoor air temperature is higher in heating mode
2 - 13
Design of 2WAY VRF SYSTEM
Design of 3WAY VRF SYSTEM
1
2
3
4
5
6
7
8
9