20
Table 2. R104HD Nominal Rates and Temperature Rises
MODEL NUMBER R104HD
MAXIMUM GAS
SUPPLY PRESSURE (IN.WC)
MINIMUM GAS SUPPLY
PRESSURE (IN.WC)
MANIFOLD
PRESSURE (IN.WC)
HIGH INPUT
(BTU/HR)
HIGH OUTPUT
(BTU/HR)
LOW INPUT (BTU/HR)
LOW OUTPUT
(BTU/HR)
GAS ORIFICE SIZE
RISE RANGE (OF)
MAX. OUTLET
AIR TEMP.
MAXIMUM EXTERNAL STATIC PRESSURE
E.S.P. (IN WC)
NET COOLING
CAPACITY (BTUH)
BLOWER SIZE
MOTOR (HP)
-X24K060C
10.0
4.5
3.5
60,000
57,000
39,000
37,050
45
30-60
160
0.80
24,000
11” x 8”
3/4
-X30K060C
10.0
4.5
3.5
60,000
57,000
39,000
37,050
45
30-60
160
0.80
28,600
11” x 8”
3/4
-X36K080C
10.0
4.5
3.5
80,000
76,000
52,000
49,400
45
35-65
165
0.80
34,600
11” x 8”
1
-X42K080C
10.0
4.5
3.5
80,000
76,000
52,000
49,400
45
35-65
165
0.80
41,000
11” x 10”
1
-X48K096C
10.0
4.5
3.5
96,000
91,200
62,400
59,300
45
40-70
170
0.80
47,000
11” x 10”
1
-X60K096C
10.0
4.5
3.5
96,000
91,200
62,400
59,300
45
40-70
170
0.80
57,000
11” x 10”
1
Table 3. Manifold Pressure Setting (in WC) &
Orifice Sizes for Natural Gas
MANIFOLD PRESSURE (IN W.C.) FOR
NATURAL GAS INSTALLATIONS
ALTITUDE
ABOVE SEA
LEVEL
HEATING VALUE BTU/CU. FT
ORIFICE
SIZE
800 TO
899 FT
900 TO
999 FT
1,000 TO
1,100 FT
Zero to
1,999 Ft.
3.5
3.5
3.5
45
2,000 to
2,999 Ft.
3.2
3.2
3.2
45
3,000 to
3,999 Ft.
2.9
2.9
2.9
45
4,000 to
4,999 Ft.
2.7
2.7
2.7
45
5,000 to
5,999 Ft.
3.4
3.4
3.4
48
6,000 to
6,999 Ft.
3.1
3.1
3.1
48
7,000 to
7,999 Ft.
2.9
2.9
2.9
48
8,000 to
8,999 Ft.
2.7
2.7
2.7
48
9,000 to
10,000 Ft.
2.6
2.6
2.6
48
Table 4. Manifold Pressure Setting (in WC) &
Orifice Sizes for LP Gas
MANIFOLD PRESSURE (IN W.C.) AND ORIFICES FOR
LP/PROPANE GAS INSTALLATIONS
ALTITUDE
ABOVE SEA
LEVEL
MANIFOLD
PRESSURE
ORIFICE
SIZE
Zero to
1,999 Ft.
10
54
2,000 to
2,999 Ft.
9.2
54
3,000 to
3,999 Ft.
8.5
54
4,000 to
4,999 Ft.
8
54
5,000 to
5,999 Ft.
9.2
55
6,000 to
6,999 Ft.
8.4
55
7,000 to
7,999 Ft.
8
55
8,000 to
8,999 Ft.
10
56
9,000 to
10,000 Ft.
9
56
