Bryant 478-90 User Manual
Page 2
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1 . Transformer
10. Gas valve
19
2. Blower motor
11. Limit switch adj.
20
3 . Combustion air blower motor
12 . Limit switch non-adj.
; 21
4 . Fan relay cooling
13 . Combustion air pressure switch
22
5 . Delay relay heating
14 . Power relay (cooling)
23
6 . Combustion air fan relay
15 . Condenser fan motor
24
7 . Resistor
16. Chilled water pump
8. Pilot gas pressure switch
17. Solution pump
9 . Pilot auto reignition
18. High temp cut-out (cooling)
High t
Part 1(
High p
Gas Vc
Auto p
Pilot g
AIR DELIVERY AT INDICATED EXTERNAL S.P. WITH WET COIL
C F M
0
0 . 1 "
0 . 2 "
0 . 3 "
0 . 4 "
0 . 5 "
0 . 6 "
0 . 7 "
0 . 8 "
R P M
B M P
R P M
B H P
R P M
B H P
R P M
B H P
R P M
B H P
R P M
B H P
R P M
B H P
R P M
B H P
R P M
B H P
2500
500
.464
620
.500
695
.560
725
.665
775
.732
805
.798
860
.865
900
.932
940
1.00
3000
650
.650
700
.734
750
.798
800
.866
840
.932
870
1.00
910
1.10
955
1.20
1000
1.25
3500
740
.900
790
.966
825
1.05
870
1.10
900
1.20
940
1.30
980
1.33
1005
1.43
1050
1.50
4000
835
1.20
890
1.30
920
1.38
960
1.45
990
1.55
1025
1.70
1060
1.80
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Shaded portions of the table are beyond the standard drive range or motor horsepower. Standard drive range 540-870 RPM.