Field Controls SWG-3 Product Manual page 24

CAS-1 AND CAS-2 (OIL)
Direct Connect
The CAS-1 and CAS-2 Field Combustion Air Systems provide
controlled amounts of outside air for proper combustion of oil heating
appliances. These models are designed specifically for use with Aero,
Beckett, Carlin, Riello, or Wayne burners.
WHEN TO USE THE CAS
•
TOO TIGHT CONSTRUCTION
• PROVIDE SOURCE OF FRESH AIR FOR COMBUSTION
• CAS-1 AND CAS-2 CONNECT DIRECTLY TO OIL BURNERS
• CAS-34U, CAS-34UP, CAS-6, AND CAS-7 ARE FOR MULTIPLE
APPLIANCES OR WHEN DIRECT CONNECTION IS NOT POSSIBLE
The ComboVent combines combustion air
connection and venting in one convenient, easy-to-
install package. For more information and details,
refer to the Venting section.
Intake
Air Hood
F urnace/Boiler
VRV - Vacuum
Relief Valve
4"
™
F urnace Boot with Te lescopic Featur e
(Allows units to fit any furnace cabinet)
Technical Service: 800.742.8368 •
COMBUSTION AIR SYSTEMS
Longer intake air runs require the use of larger diameter pipe between
the VRV and the Intake Air Hood. Use a pipe increaser at the VRV and
a reducer at the Intake Air Hood.
ComboVent™
Power Venter
VENT PIPE
FITTINGS
TEE
Y-CONNECTION
90° ELBOW
CAS-2 SERIES
45° ELBOW
AIRBOOT
FURNACEBOOT™
MODEL
Burner Inle t
CAS-1
CAS-2B
CAS-2C
CAS-2B-90E
fieldcontrols.com
Intake Air Hood
Vacuum Relief
Valve (VRV)
EQUIVALENT FEET FOR VENT PIPE FITTING
VENT PIPE DIAMETER
3" 4" 5" 6"
19 25 31 38
10 13 16 20
5 7 9 1 1
3 4 4 5
PIPE DIAMETER
MAXIMUM LINEAR FEET FEET/ELBOW
® /
4"
5"
6"
APPLIANCE
BURNER
FUEL
INPUT
BECKETT AFII, NX,
OIL UP TO 2 GPH
RIELLO 40BF
BECKETT AFG OR
AF, CARLIN EZ-1,
OIL UP TO 2 GPH
CRD, FRD, WAYNE
MSR
BECKETT AF AND
OIL AFG, WARM AIR UP TO 1.5 GPH
FURNACES
Field AirBoot
®
FurnaceBoot™
7" 8" 9" 10" 12" 14"
44 50 56 63 75 89
23 26 29 32 39 45
12 14 16 18 21 25
6 7 8 9 10 13
44' 7'
60' 9'
90' 1 1'
COMPONENTS
4" INTAKE AIR HOOD
4" VACUUM RELIEF VALVE
4" INTAKE AIR HOOD
4" VACUUM RELIEF VALVE
FIELD AIRBOOT
®
4" INTAKE AIR HOOD
4" VACUUM RELIEF VALVE
FURNACEBOOT™
23