Bryant 577C--A Product Data page 25

Horizontal Economizer 1- -in. (25 mm) Filter Pressure Drop (in. W.C.)
UNIT 577C --- --- A
Wet Coil Air Delivery CFM - - Downflow - - High Speed with 1- -in. (25 mm) Filter and Economizer
UNIT SIZE
36
42
48
60
GAS ADJUSTMENT
Natural Gas Orifice Sizes and Manifold Pressure (in. W.C.)
Nameplate Input
(Btu/hr)
Orifice No. (Qty)
40000
Manifold Press.
Orifice No. (Qty)
60000
Manifold Press.
Orifice No. (Qty)
90000
Manifold Press.
Orifice No. (Qty)
115000
Manifold Press.
Orifice No. (Qty)
130000
Manifold Press.
*In the U.S.A., the input rating for altitudes above 2000 ft (610m) must be reduced by 4% for each 1000 ft (305 m) above Sea level.
In Canada, the input rating for altitudes from 2001 to 4500 ft (611 to 1372 m) above sea level must be derated by 10% by an authorized gas conversion station or
dealer.
For Canadian Installations from 2000 to 4500 ft (610 to 1372 m), use U.S.A. column 2001 to 3000 ft (611 to 914 m).
Note: Orifice sizes and manifold pressure settings are based on natural gas with a heating value of 1025 Btu/ft3 amd a specific gravity of .6.
† Orifices available through your distributor.
Propane Gas Orifice Sizes and Manifold Pressure (in. W.C.)
Nameplate
Input (Btu/hr)
Orifice No. (Qty)
40000
Manifold Press.
Orifice No. (Qty)
60000
Manifold Press.
Orifice No. (Qty)
90000
Manifold Press.
Orifice No. (Qty)
115000
Manifold Press.
Orifice No. (Qty)
130000
Manifold Press.
*In the U.S.A., the input rating for altitudes above 2000 ft (610m) must be reduced by 4% for each 1000 ft (305 m) above Sea level.
In Canada, the input rating for altitudes from 2001 to 4500 ft (611 to 1372 m) above sea level must be derated by 10% by an authorized gas conversion station or
dealer.
For Canadian Installations from 2000 to 4500 ft (610 ---1372 m), use U.S.A. column 2001 to 3000 ft (611 to 914 m).
†Use Kit No. CPLPCONV013A00 (0 ---2000 ft [0 ---610 m] above sea level). Use Kit No. CPLPCONV014A00 (2001 ---6000 ft [611 ---1829 m] above sea level).
High Altitude Compensation, Propane Gas
Nameplate Input
0 to 2000 ft
(Btu/hr)
(0--- 610 m)
40000 38000
60000 53000
90000 79000
115000 103000
130000 116000
*In the U.S.A., the input rating for altitudes above 2000 ft (610m) must be reduced by 4% for each 1000 ft (305 m) above Sea level.
In Canada, the input rating for altitudes from 2001 to 4500 ft (611 to 1372 m) above sea level must be derated by 10% by an authorized gas conversion station or
dealer.
For Canadian Installations from 2000 to 4500 ft (610 ---1372 m), use U.S.A. column 2001 to 3000 ft (611 to 914 m).
High Altitude Compensation, Natural Gas
Nameplate
0 to 2000 ft
Input (Btu/hr)
(0--- 610 m)
40000 40000
60000 60000
90000 90000
115000 115000
130000 130000
*In the U.S.A., the input rating for altitudes above 2000 ft (610m) must be reduced by 4% for each 1000 ft (305 m) above Sea level.
In Canada, the input rating for altitudes from 2001 to 4500 ft (611 to 1372 m) above sea level must be derated by 10% by an authorized gas conversion station or
dealer.
For Canadian Installations from 2000 to 4500 ft (610 ---1372 m), use U.S.A. column 2001 to 3000 ft (611 to 914 m).
24--- 36
42--- 60
0.1 0.2 0.3
1333 1289 1256
1612 1569 1527
2166 2085 2002
2298 2239 2180
0 to 2000
(0--- 610 m)
44 (2)
3.2
38 (2)
3.6
38 (3)
3.6
33 (3)
3.8
31 (3)
3.8
0 to 2000 2001 to 3000*
(0--- 610 m) (611 to 914 m)
55 (2)
10.0
53 (2)
10.0
53 (3)
10.0
51 (3)
10.0
49 (3)
10.0
Rated Heating Input (Btu/hr), Propane Gas at Installation Altitude Above Sea Level, U.S.A.*
2001 to 3000 ft*
(611 to 914 m)
31700
45900
68900
100400
115500
Rated Heating Input (Btu/hr), Natural Gas at Installation Altitude Above Sea Level, U.S.A.*
2001 to 3000 ft*
(611 to 914 m)
36000
54000
81000
103500
117000
EXTERNAL STATIC PRESSURE (in. W.C.)
0.4 0.5 0.6
1214 1152 1118
1481 1451 1393
1919 1798 1709
2110 2044 1951
ALTITUDE OF INSTALLATION (FT. ABOVE SEA LEVEL) U.S.A.*
2001 to 3000* 3001 to 4000
(611 to 914 m) (915 to 1219 m)
45 (2)† 48 (2)†
3.2 3.8
41 (2)† 41 (2)†
3.8 3.4
41 (3)† 41 (3)†
3.8 3.4
36 (3)† 36 (3)†
3.8 3.6
31 (3) 33 (3)†
3.2 3.7
ALTITUDE OF INSTALLATION (FT. ABOVE SEA LEVEL) U.S.A.*
3001 to 4000
(915 to 1219 m)
56 (2) 56 (2)
11.0 11.0
54 (2) 54 (2)
11.0 11.0
54 (3) 54 (3)
11.0 11.0
52 (3) 52 (3)
11.0 10.6
50 (3) 51 (3)
11.0 11.0
3001 to 4000 ft 4001 to 5000 ft
(915 to 1219 m) (1220 to 1524 m)
31700
45900
68900
98900
111800
3001 to 4000 ft 4001 to 5000 ft
(915 to 1219 m) (1220 to 1524 m)
34400
51600
77400
98900
111800
25
PRESSURE DROP
0.20
0.25
0.7 0.8 0.9
1076 1035 997
1351 1317 1278
1582 1467 1270
1862 1777 1697
4001 to 5000 5001 to 6000
(1220 to 1524 m) (1524 to 1829 m)
48 (2)†
3.5
42 (2)†
3.4
42 (3)†
3.4
36 (3)†
3.3
33 (3)†
3.4
4001 to 5000 5001 to 6000
(1220 to 1524 m) (1524 to 1829 m)
56 (2)
11.0
54 (2)
11.0
54 (3)
11.0
53 (3)
11.0
52 (3)
11.0
5001 to 6000 ft
(1524 to 1829 m)
31700 31200
45800 45800
68600 68600
83000 83000
101300 100400
5001 to 6000 ft
(1524 to 1829 m)
32800 31200
49200 46800
73800 70200
94300 89700
106600 101400
1.0
950
1242
988
1591
48 (2)†
3.2
42 (2)†
3.2
42 (3)†
3.2
38 (3)†
3.6
34 (3)†
3.3
56 (2)
10.7
54 (2)
11.0
54 (3)
11.0
53 (3)
11.0
52 (3)
11.0