Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual page 26

i_>
VENTTERMINAL
(_) AIR SUPPLY iNLET
AREA WHERE TERMINAL IS NOT PERMITED
Item Clearance Description
A Clearance above grade, veranda, porch, deck, balcony, or
anticipated snow level
B Clearance to a window or door that may be opened
C Clearance to a permanently closed window
D Ver ficaI clearance to a ventilated soffit located above the
terminal within a horizontal distance of 2 (61bm) from the
centedine of the terminal
E Clearance to an unventilated soffit
F Clearance 1oan outside corner
G Clearance to an inside corner
H Clearance to each side of the centedine extended above
electrical meter or gas service regulator assembly
I Clearance to service regulator vent outlet
J Clearance to non-mechanical air supply inlet to building or
the combustion air inlet to any other appliance
K Clearance to a mechanical air supply inlet
L Clearance under a veranda, porch, deck, or balcony
M Clearance to each side of the centeriine extended above or
below vent terminal of the furnace to a dryer or water heater
vent, or other appliance's direct vent intake or exhaust
N Clearance to the vent terminal of a dryer vent. water heater
vent, or other appliances direct vent intake or exhaust
O Clearance from a plumbing vent stack
p Clearance above paved sidewalk or paved
driveway located on public property
(I) In accordance with the current CSA B149 1. Natural Gas and Pro
Canadian Installation (1)
12" (30cm) #
12 "(30 cm) for appliances > 10,OO0Btuh (3 kW)
and < 100,000 Btuh(30 kW), 36"
(91 cm) for appliances > 100.000 Btuh (30 kW)
3" (91 cm) within 15 (4:5 m) above the meter/regulator
assembly
3" (91 cm)
9" (23 cm)_r appliances > 10,000 Btuh (3 kW) and
< 100,000 Btuh (30kW) and <50.000 Btuh (15 kW), 12"
(30 cm) for appliances > 50,000 Btuh (15 kW)
6" (I 83m)
12" (30 cm) +
12" (30 cm)
3" (91 cm)
3" (91 cm)
T(2 13m)**
,ane Installafion Code
US Installation (2)
12" (30 cm)
9" (23 cmyor appliances > 10,000 Btuh (3 kW)
and < 50,000 Btuh (15kW), 12 "
(30 cm) for appJiances > 50,000 Btuh (15 kW)
3' (91 cm) within 15"(45 m) above the meter/regulator
assembly
9"(23 cm) for appliances > 10,000 Btuh (3 kW)
and < 50.000 Btuh (15kW), 12 "
(30 cm) for appliances > 50,000 Btuh (15 kW)
3' (91 cm) above ifvwthin 10 (3rh)horizontally
12" (30 cm)
3' (91 cm)
3' (91 cm)
(2) In accordance with the current ANSI Z223 1/NFPA 54, Nafional Fuel Gas Code
# 18" (46cm)aboveroofsurface
+ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor
For clearances not specified in ANSI Z223.1/N FPA 54or CSA B 149 1, clearances shall be in accordance with local instailafion codes and the requirements of the gas supplier and the
manufacturer's installation instructions
** A vent shall not terminate above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings
Notes:
1 The vent for this appliance shall not terminate
a. Over public walkways; or
b Near soffit vents or crawl space vents or other areas where condensate or vapor could create a nusaince or hazard or property damage; or
c. Where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valves, or other equipment.
2 When locating vent terminations, consideration must be given to prevailing winds, location, and other conditions which may cause recirculafion of the combustion products of adjacent vents
Recirculation can cause poor combustion, inlet condensate problems, and accelerated corrosion of the heat exchangers
3 Avoid venting under a deck or large overhang Recircula0on could occur and cause performance or system problems
A05009
Table 5--Direct Vent Termination Clearance
26