Vertical Examples For Colinear Direct Vent - Empire Comfort Systems Mantis FF28BMN-1 Installation Instructions And Owner's Manual

VERTICAL EXAMPLES FOR COLINEAR DIRECT VENT

Special Note: The vent terminal (PTrap, Vent cap or two 90° elbows) and first 90° elbow off back of the heater, when within 6"
(15.2 cm) off back of the heater, do not contribute to the overall vent length measurement. For each 45° elbow installed in the
horizontal run, the length of the horizontal run MUST be reduced by 1.5 feet (45 cm). This does not apply if the 45° elbows are
installed on the vertical part of the vent system. Reduce the length of the horizontal run 3 feet (91.4 cm) for every 90° elbow.
Note: Exhaust must be a minimum of 3"
above air intake inlet.
CO-LINEAR DIRECT VENT ADAPTER
MODEL PVCA
Determining Minimum Vent Height Above the Roof
WARNING: Major U.S. building codes specify minimum chimney and/or vent height above the rooftop. These minimum heights are
necessary in the interest of safety.
25700-1-0809
3" MIN.
12" MIN.
FLAT ROOF
PTRAP
CO-LINEAR TRANSITION
MODEL PVCT
90° ELBOW
3 FEET
10'
5'
SINGLE FLUE ADAPTER
MODEL PVVK-SH
Figure 32
Calculation example of vent run maximum 40'
EXHAUST
AIR INTAKE
SIDE VIEW
VERTICAL TERMINATION CAP
10'
6' 90° ELBOW
3 FEET
H = 5' + 6' = 11'
V = 10' + 10' = 20'
(3) 90° = 9'
TOTAL = 40'
FIRST 90 ° ELBOW
DOES NOT GET COUNTED
WHEN WITHIN 6" (15.2cm)
OFF BACK OF HEATER
EXHAUST
AIR INTAKE
3" MIN.
12" MIN.
OPTIONAL
MODEL PVVTC
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