RT-SVX074A-EN
29
Figure 30.
15 to 25 ton high efficiency – horizontal
airflow supply/return
22 3/8''
[570]
23 11/16''
[603]
26 3/4''
[679]
29''
[737]
20 ''
[508]
46 1/2''
[1181]
5 1/4''
[133]
6''
[153]
5 1/2''
[141]
25 1/2''
[648]
4 9/16''
[114]
7 15/16''
[202]
14 1/16''
[357]
SUPPLY
RETURN
Supply and return air openings as viewed from a downflow
configuration are shown in the following drawings.
Elbows with turning vanes or splitters are recommended to
minimize air noise due to turbulence and to reduce static
pressure.
When attaching the ductwork to the unit, provide a water
tight flexible connector at the unit to prevent operating
sounds from transmitting through the ductwork.
All outdoor ductwork between the unit and the structure
should be weather proofed after installation is completed.
Figure 31.
6 to 10 tons high efficiency – downflow
airflow supply/return, through-the-base utilities
3 5/8”
92 MM
17 1/2”
444 MM
4”
102 MM
9 7/8”
251 MM
17 1/2”
444 MM
32 1/8”
816 MM
RETURN
SUPPLY
33”
838 MM
4 1/8”
104 MM
27 5/8”
701 MM
THROUGH THE
BASE CONDENSATE
40 3/4”
1035 MM
THROUGH THE
BASE ELECTRICAL
5 7/8”
149 MM
5”
127 MM
10 7/8”
276 MM
3 3/4”
95 MM
2 3/4”
71 MM
6 1/2”
165 MM
Figure 32.
12.5 tons high efficiency – downflow
airflow supply/return, through-the-base utilities
RETURN
SUPPLY
3 5/8”
92 MM
17 1/2”
444 MM
9 7/8”
251 MM
17 1/2”
444 MM
32 1/8”
816 MM
33”
838 MM
4”
102 MM
THROUGH THE
BASE ELECTRICAL
THROUGH THE
BASE CONDENSATE
4 5/8”
119 MM
THROUGH THE
BASE GAS
5 7/8”
149 MM
27 5/8”
701 MM
42 3/16”
1072 MM
6 3/8”
163 MM
2 3/4”
71 MM
51 3/16”
1316 MM
4 1/8”
104 MM
Figure 33.
15 to 25 tons high efficiency – downflow
airflow supply/return, through-the-base utilities
7"
177 MM
14 3/8"
365 MM
14 7/16"
365MM
40"
1002MM
19 3/8"
488MM
65"
1652MM
73 5/8"
1868MM
8 3/8"
212MM
48"
1223MM
6 5/8''
167 MM
55.0577
[1398.467]
55.2977
[1404.563]
8''
205MM
55 3/8''
1404MM
THROUGH
THE BASE
ELECTRICAL
THROUGH
THE BASE GAS
(Y_J MODELS
ONLY)
Table 3.
Clearance required from duct to combustible
surfaces
Model Number
Clearance required from duct to
combustible surfaces (inches)
THJ072
0
THJ090
0
THJ102
0
THJ120
0
THJ150
0
THJ180
0
THJ210
0
THJ240
0
THJ300
0