12
VENTING CHART WORKSHEET
A. FUEL TYPE:
NATURAL GAS
LP GAS (PROPANE)
B. TOTAL VERTICAL VENT RISE (MEASURED FROM HORIZONTAL CENTERLINE OF VENT
OPENING ON THE BACK OF THE FIREPLACE TO THE HORIZONTAL CENTERLINE OF THE
VENT CAP (FOR HORIZONTAL VENT CAPS) OR TO THE FLANGE ON THE CAP (FOR VERTI-
CAL CAPS)): _____________ FEET
C. TOTAL HORIZONTAL VENT RUN (MEASURED FROM THE VERTICAL CENTERLINE OF
THE VENT OPENING ON THE BACK OF THE FIREPLACE TO THE FLANGE ON THE CAP (FOR
HORIZONTAL CAPS) OR TO THE VERTICAL CENTERLINE OF THE CAP (FOR VERTICAL
CAPS)): _____________ FEET
NOTE: THE VERTICAL VENT RISE AND HORIZONTAL VENT RUN ARE THE OFFSETS IN THE LO-
CATIONS OF VENT CAP RELATIVE TO THE VENT OPENING ON THE FIREPLACE. VENT PIPE
THAT RUNS AT 45° HAS BOTH A VERTICAL RISE AND HORIZONTAL RUN. SNORKEL CAPS HAVE
BUILT-IN VERTICAL RISE THAT MUST BE COUNTED
.
D. TOTAL NUMBER OF 90° ELBOWS: _______
NOTE: SNORKELS COUNT AS 2- 90° ELBOWS
E. TOTAL NUMBER OF 45° ELBOWS: _______
TERMINATION (CAP) TYPE: HORIZONTAL
VERTICAL
SNORKEL
VENT BRAND:
Simpson DuraVent GS/Pro
®
Selkirk Direct-Temp
®
Security Secure Vent™
AmeriVent Direct™
Metal Fab Direct Vent
ICC
EXCELDirec
t
VENT CAP MODEL NO: _______________
NOTE: SEE APPROVED VENT CAPS ON PAGE 8
EXHAUST AND AIR INLET RESTRICTORS CALCULATOR
A. Fuel Type
________
B. Total Vertical Vent Rise:
________ feet
C. Total Horizontal Vent Run (Actual):
________ feet
D. 90° Elbows Needed:
________
E. 45° Elbows Needed:
________
F. Total 90° Elbows Equivalent:
D +(E x ½) =
________
G. 90° Elbows in Excess of 2:
F - 2 =
________
H. Additional Horiz. Feet Equivalent:
G x 3 =
________ feet
I. Horizontal Vent Run (Equivalent):
C + H =
________ feet
Find _____ Chart Settings for:
B._________ feet Vertical Rise and I.__________ feet Horizontal Run (Equivalent).
Exhaust Restrictor Required: N
Y
IF YES: A
or
B
Air Restrictor Required:
N
Y
IF YES: Number of Tabs Open:
_______
