Combination Ratio - Trane TVR Pro CO Series Service Manual

4 Combination Ratio

Combination ratio =
Table 1-5.1: Indoor and outdoor unit combination ratio limitations
Type
TVR Pro CO series ODU
Notes:
1. The total capacity of the indoor units can be up to a maximum of 130% of the combined capacity of the outdoor unit for a system where not all the indoor
units are operating at the same time.
2.
When fresh air processing units are installed together with standard indoor units, the total capacity of the fresh air processing units must not exceed 30%
of the total capacity of the outdoor units and the combination ratio must not exceed 100%.
Table 1-5.2: Combinations of Indoor and outdoor units
Outdoor unit capacity
Capacity
kW HP
index
22.4 8 224
28 10 280
33.5 12 335
40 14 400
45 16 450
50 18 500
56 20 560
61.5 22 615
67 24 670
73 26 730
78.5 28 785
85 30 850
90 32 900
95 34 950
101 36 1010
106.5 38 1065
112 40 1120
118 42 1180
123.5 44 1235
130 46 1300
134.5 48 1345
140 50 1400
146.5 52 1465
151.5 54 1515
157 56 1570
163.5 58 1635
170 60 1700
175 62 1750
179.5 64 1795
185 66 1850
191.5 68 1915
196.5 70 1965
202 72 2020
208.5 74 2085
Sum of capacity indexes of the indoor units
Capacity index of the outdoor units
Minimum
Standard indoor
combination ratio
50%
Sum of capacity indexes of connected
indoor units (standard indoor units
only)
112 to 291.2
140 to 364
167.5 to 435.5
200 to 520
225 to 585
250 to 650
280 to 728
307.5 to 799.5
335 to 871
365 to 949
392.5 to 1020.5
425 to 1105
450 to 1170
475 to 1235
505 to 1313
532.5 to 1384.5
560 to 1456
590 to 1534
617.5 to 1605.5
650 to 1690
672.5 to 1748.5
700 to 1820
732.5 to 1904.5
757.5 to 1969.5
785 to 2041
817.5 to 2125.5
850 to 2210
875 to 2275
897.5 to 2333.5
925 to 2405
957.5 to 2489.5
982.5 to 2554.5
1010 to 2626
1042.5 to 2710.5
Maximum combination ratio
Fresh air processing
units only units only
130% 1 100%
Sum of capacity indexes of
connected indoor units
(fresh air processing units
and standard indoor units
together)
112 to 224
140 to 280
167.5 to 335
200 to 400
225 to 450
250 to 500
280 to 560
307.5 to 615
335 to 670
365 to 730
392.5 to 785
425 to 850
450 to 900
475 to 950
505 to 1010
532.5 to 1065
560 to 1120
590 to 1180
617.5 to 1235
650 to 1300
672.5 to 1345
700 to 1400
732.5 to 1465
757.5 to 1515
785 to 1570
817.5 to 1635
850 to 1700
875 to 1750
897.5 to 1795
925 to 1850
957.5 to 1915
982.5 to 1965
1010 to 2020
1042.5 to 2085
10
Fresh air processing units and
standard indoor units together
100% 2
Maximum number of connected
indoor units
13
16
20
23
26
29
33
36
39
43
46
50
53
56
59
63
64