Royal Appliance Air Furnace User Manual
Page 20
29733 R2 06/01/2003
20
TABLE A-5 BELT DRIVE BLOWER SET-UP
Blower Set-Up
Model
HO-B
0.20 in. w.c.
0.50 in. w.c.
Cooling Capacity
Pulley Pulley
Bonnet Output
(BTUH)
Blower
Motor
hp
Fan Belt
Blower Motor Turns
Out
Blower Motor Turns
Out
Tons CFM
Range
80 (60,000)
3 2
80 (70,000)
2 1
80 (80,000)
G10
½
4L360
5 x ¾
3¼ x ½
2
5 x ¾
3¼ x ½
1
3
1000 - 1300
120 (90,000)
3 2
120 (100,000)
3 1
120 (120,000)
G10
½
4L360
5 x ¾
3¼ x ½
2
5 x ¾
3¼ x ½
0
3
1000 - 1500
TABLE A-6 BELT DRIVE BLOWER CHARACTERISTICS
CFM
External Static Pressure - inches w.c.
Furnace
Model
Motor
hp
Blower
Temp.
Rise
(
DT)
Motor
FLA
Motor
Pulley
Turns Out
0.20 0.30 0.40 0.50 0.60 0.70
0
1596 1518 1435 1330 1247 1184
1
1505 1434 1347 1220 1081 993
2
1567 1453 1291 1125 996 817
80F
½
G10
60° - 90°F
5.8
3
1429 1332 1180 1064 818 558
0
1832 1747 1658 1546 1446 1338
1
1694 1603 1507 1382 1245 1119
2
1566 1467 1339 1196 1064 880
120F
½
G10
55° - 85°F
5.8
3
1383 1270 1120 1006 771 545
TIP:
These formulae will assist with the design of the ductwork and the determination of airflow delivery:
(
)
(
)
CFM
Bonnet Output
x SystemTemperature Rise
SystemTemperature Rise
Bonnet Output
xCFM
=
=
1085
1085
.
.