Sterling QVSB - Manual

HORIZONTAL TERMINATION
Select location on outside wall for vent terminal. In most applications, the terminal should be on
level with the fl ue outlet of the unit, less a 1/4 inch per foot pitch for condensate drainage toward
the outside of the building. See fi gure 1.
The location of the vent terminal must be in accordance with the National Fuel Gas Code ANSI
Z223.1 in the U.S. or the National Gas Installation Code CSA-B149.1 or the Propane Gas Installation
Code CSA-149.2 in Canada. Minimum clearance are as follows:
Cut hole through wall for 8 inch combustion air pipe. Install thimble if required by local codes or
type of wall construction. See fi gure 2, step 1.
1
CONCENTRIC VENT TERMINAL
INSTALLATION INSTRUCTIONS
SUPPLEMENT TO INSTALLATION INSTRUCTIONS BSCII & PSCII & SCDFM
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read this supplement and the unit heater installation,
operating, and maintenance instructions thoroughly before installing or servicing this equipment.
08/12
CVT-IOM-2
J30- 03389
Table 1
Vent SystemsTermination Clearance Requirements
Structure/Object
Minimum Clearances for
Termination Locations
USA CANADA
Door, window or gravity vent inlet or
combustion air inlet for other appliances
4 ft. below
4 ft. horizontally
1 ft. above 1 ft. (0.3m) for 100,000 BTUH
input or less. 3 ft. (0.9m) for
input exceeding 100,000 BTUH
Forced air inlet within 10 ft. 3 ft. above 6 ft. (1.8m)
Adjoining building or parapet 6 ft. 6 ft. (1.8m)
Adjacent public walkways 7 ft. above grade 7 ft. (2.1m) above grade
Electric, gas meters & regulators 4 ft. horizontal
3 ft. (0.9m) horizontally from
meter/regulator assembly. 6 ft.
(1.8m), any direction, from a gas
service regulator vent outlet
Above grade level 1 ft. 1 ft. (0.3m)