ICP H9MPX - Page 16

Direct Vent Termination Clearance
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(y AIR SUPPLY INLET
E_ AREAWHERE TERMINAL IS NOT PERMITED
I_1 VENTTERMINAL \\\\\
Item ClearanceDescription CanadianInstallation(1) U.S. Installation(2)
A Clearanceabovegrade,veranda,porch, deck,balcony,or 12" (30cm)# 12" (30 cm)
anticipatedsnowlevel
B Clearanceto awindowordoorthat maybe opened 12" (30cm) forappliances > 10,000Btuh (3kW) and < 9" (23 cm) for appliances > 10,000Btuh(3 kW)and < 50,000
100,000Btuh (30kW), 36" (91cm)for appliances > 100,000 Btuh(14.7 kW),12" (30cm) for appliances > 50,000Btuh (14.7
Btuh(30 kW) kW)
C Clearanceto apermanentlyclosed window * *
D Verticalclearanceto aventilatedsoffit locatedabovethe * *
terminalwithina horizontaldistanceof 2' (61cm)from the
centedineofthe terminal
E Clearanceto an unventilatedsoffit * *
F Clearanceto an outsidecorner * *
G Clearanceto an insidecorner * *
H Clearanceto eachsideofthe centedineextendedabove 3' (91cm) within 15' (4.5 m)abovethe meter/regulator *
electricalmeteror gasservice regulatorassembly assembly
I Clearanceto seMce regulatorvent outlet 3' (91cm) *
J Clearanceto non-mechanicalair supplyinlet to buildingor 12" (30cm) for appliances > 10,000Btuh(3kW) and< 9" (23 cm)for appliances > 10,000Btuh(3 kW)and <
thecombustionair inlettoany other appliance 100,000Btuh (30kW), 36" (91 cm) for appliances > 50,000Btuh(15 kW),12" (30cm) for appliances > 50,000
100,000Btuh (30kW) Btuh(14.7 kW)
K Clearanceto amechanicalair supplyinlet 6' (1.83 m) 3' (91 cm) aboveif within 10' (3m) horizontally
L Clearanceunder averanda,porch, deck,or balcony 12" (30 cm) + *
M Clearanceto eachsideofthe centedineextendedaboveor 12" (30 cm) 12" (30cm)
belowventterminal of thefurnace to a dryer or water heater
vent,orother appliance'sdirectvent intake orexhaust.
N Clearanceto thevent terminalofa dryervent,water heater 3' (91cm) 3' (91 cm)
vent,orother appliancesdirectvent intakeorexhaust.
O Clearancefrom a plumbingventstack 3' (91cm) 3' (91 cm)
P Clearanceabovea pavedsidewalk or paveddrivewaylocated 7' (2.13m) ** *
onpublicproperty.
> greaterthan, _>greaterthan orequalto, < lessthan, _ lessthanor equalto
(1.) Inaccordancewith the currentCSAB149.1, NaturalGasandPropaneInstallationCode
(2.) Inaccordancewith the currentANSIZ223.1/NFPA54,National FuelGas Code
# 18" (46cm)aboveroof surface
+ Permittedonlyif veranda,porch,deck,or balconyis fully openon a minimumof two sides beneaththefloor.
Forclearancesnotspecifiedin ANSIZ223.1/NFPA54 or CSAB149.1,clearancesshall bein accordancewith local installationcodes and
the requirementsofthe gas supplierandthe manufacture'sinstallationinstructions.
** A ventshall notterminatedirectly abovea sidewalkor paveddrivewaythatis locatedbetweentwo singlefamily dwellingsand servesboth dwellings.
Notes:
1. The ventforthis applianceshallnotterminate
a. Overpublicwalkways;or
b. Nearsoffitvents orcrawl spaceventsor other areaswherecondensateorvapor couldcreate a nuisanceor hazardor propertydamage;or
c. Wherecondensatevaporcould causedamage orcouldbe detrimentaltothe operationof regulators,relief valves, orother equipment.
2. When locatingventterminations,considerationmust be givento prevailingwinds,location,and other conditionswhichmay causeredrcolation of the combustionproductsofadjacentvents.
Recirculationcan causepoorcombustion,inlet condensateproblems,and acceleratedcorrosionof the heatexchangers.
3. Avoidventingundera deck orlargeoverhang. Recirculationcouldoccur andcauseperformanceor systemproblems.
16 Specifications are subject to change without notice. 440 01 1051 03