Equipment Selection Procedure; Selection Flow Chart - Toshiba MCY-MAP 7HS-UL Series Engineering Data Book

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Data book

Equipment selection procedure

2-1.

Selection flow chart

Determination of indoor air-conditioning load at each room.
Preliminary selection of indoor units in the standard capacity no less than
air-conditioning load at each room.
Calculate corrected capacity A of each indoor unit by correcting of indoor
temperature for the standard capacity of each indoor unit.(Refer to Chart [1])
Preliminary selection of outdoor unit in the standard capacity no less than
total values of corrected capacity A in indoor units. And check both connect-
able indoor units number and the outdoor unit diversity(Connected ratio of
indoor units to outdoor units) for the specifications.
Calculate corrected capacity B of each indoor unit by following 2 steps.
Step1:Find the correction value of "Connecting pipe length and lift -" by both
the longest length and the largest height. (Refer to Chart [3])
Step2:Calculate by multiplying the value of step1 by corrected capacity A.
Find correction values of below items for the standard capacity of outdoor
unit selected at or
Then determination of total corrected capacity of the selected outdoor unit by
all multiplying.
-Correction of indoor temperature condition(Refer to Chart [1])
-Correction of outdoor temperature condition(Refer to Chart [2])
-Correction of connecting pipe length and lift between indoor and outdoor
units by both the longest length and the largest height (Refer to Chart [3])
-Correction of outdoor unit diversity (Refer to Chart [4])
-Correction of frost condition on outdoor heat exchanger when in heating
(Refer to Chart [5])
Calculate corrected capacity C of each indoor unit by multiplying the total
corrected capacity of outdoor unit at
unit standard capacity for total standard capacity of all indoor units.
Corrected capacity B of indoor
unit >= air-conditioning load (for All
rooms)
YES
'.
by proportional division of each indoor
Corrected capacity C of indoor
unit >= air-conditioning load (for All
rooms)
YES
end
' Increase of indoor unit
capacity at object room against
air-conditioning load
NO
' Increase of outdoor unit
capacity. And check the outdoor
unit diversity
NO
Note : Please use selection software to layout the system.
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