Flue Venting - Re-Verber-Ray ST Series Operation, Installation, Maintenance And Parts Manual

2 INSTALLATION
2.8

Flue Venting

The following guidelines must be observed to ensure
proper system performance and safety:
* Check the Natural Gas and Propane Installation Code,
CSA B149.1 prior to installing flue stacks. Local codes may
vary.
* The heater is designed to operate with a 4-in./10.2cm
diameter 26 ga. minimum exhaust stack.
* Single-wall galvanized flue pipe or Dura/Connect
single wall, flexible connectors must be used. The
portion of the flue pipe which goes through
combustible material in the building wall or roof
must pass through a type "B" vent to maintain
clearance (see figure 2.8.1 through 2.8.4).
* Maximum vent length for all models is 20 ft./6.1m
including two 90 degree elbows.
* The venting system shall terminate at least 3 ft./0.9m
above any building opening or any gas regulator.
* The venting system shall terminate at least 6 ft./1.83m
from a combustion air inlet or another appliance
and not above a gas utility meter or service
regulator. The bottom of the vent terminal shall be
located at least 7 ft./2.13m above grade.
* Uninsulated single-wall metal pipe shall not be
used in cold climates for venting gas utilization
equipment.
* The vent terminal of a horizontal venting system
must be installed to prevent blockage by snow and
protect building materials from degradation by
flue gases.
* Vertical venting should be a minimum of 24 inches
/61cm above the roof in an area that prevents snow
blockage. See Figure 2.8.1
* Horizontal venting must maintain a minimum
distance from the vent termination to the sidewall.
See Figure 2.8.2 through 2.8.4
* Buildings incorporating vented soffits/overhangs
must ensure that the products-of-combustion do
not enter the attic space.
* A common flue of 6 in./15.2cm diameter must be used
for double-venting of units. One thermostat must
control both units. When common venting is
used, flues should be connected so that the by-
products of one heater cannot flow into the
adjoining flue of the other heater. A dual-exhaust
assembly is available from Brant Radiant Heaters,
Part Number BR-YA or BR-RTA (see Figures 2.8.6
through 2.8.8). A Field Controls SK-6 vent cap
must be used for sidewall common venting of all
models.
15
Figure 2.8.1
Figure 2.8.2
Figure 2.8.3
Figure 2.8.4