Design Technical Manual

Table Of Contents
1. SYSTEM DESIGN
1-1. REFRIGERANT SYSTEM
CONNECTABLE UNIT WITHIN 1 REFRIGERANT SYSTEM
Unit Quantity Remarks
Outdoor unit 1 to Max. 3 units
Combination : See table 1Indoor unit 2 to Max. 45 units
RB unit 2 to Max. 45 units
*1
*1: Multi type of RB unit is counted as a part for four per set.
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Table (combination)
Ton
Nominal cooling
capacity
(Btu/h)
Outdoor unit
quantity
Maximum
connectable
indoor unit
Connectable
capacity range
6 72,000 1 14
50% to 150%
8 96,000 1 16
10 120,000 1 18
12 144,000 2 22
14 168,000 2 26
16 192,000 2 30
18 216,000 2 34
20 240,000 2 37
22 264,000 3 41
24 288,000 3 45
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Caution
When all indoor units are operating at maximum capacity, individual indoor unit operate at a
slightly lower capacity. (When connecting more than 100%)
Based on the capacity table in chapter 2, select the optimum combination of outdoor units.
Do not exceed both of "connectable capacity range" and "maximum connectable indoor
unit", otherwise it may hinder the return of oil to the compressor and cause a compressor
breakdown.
Minimum number of connectable indoors units is two.
Install sum total capacity of indoor unit for cooling only to 50% or less of the all indoor unit
capacity.
- (06 - 01) -
SYSTEM
DESIGN
SYSTEM
DESIGN