Field Controls CAS-34U User Manual

page 4 of 16
P/N 780107600 Rev B 05/23
Equivalent Feet for Intake Pipe Fitting
Intake Pipe Fittings
Intake Diameter
4” 6”
90° Elbow 7 feet 11 feet
45° Elbow 4 feet 5 feet
Table 2
TOTAL INPUT OF
APPLIANCE
MAXIMUM EQUIVALENT FEET OF INSTALLATION
Oil (gph) Gas (BTU)
6” Duct And 6”
Intake Air Hood
4” Duct And 4”
Intake Air Hood
4" Duct And Hood w/
Orifi ce Ring
HI LOW HI LOW HI LOW
0.50 - 0.75 50,000-100,000 300 300 300 300 300 300
0.90 125,000 300 300 300 220 300 220
1.00 150,000 300 300 232 118 174 108
1.25 175,000 300 300 152 63 99 48
1.35 200,000 300 300 102 32 52 14
1.55 225,000 300 239 68 13 20
1.75 250,000 300 150 45
2.00 300,000 300 53 16
2.50 350,000 193 8
2.75 400,000 109
3.25 450,000 56
Table 1

Field Controls CAS-34U Specifications

General

Brand	Field Controls
Model	CAS-34U
Category	Boiler Supplies
Language	English