HeatStar ERXL Serie Instructions D'utilisation Et Manuel Du Propriétaire page 14

SECTION 5
Venting / Ducting
General Requirements
This heater must be vented in accordance with the specifications
contained in this manual and with the following national codes
and any state, provincial or local codes which may apply:
• Refer to National Fuel Gas Code NFPA 54/ANSI Z223.1- latest
revision.
• CANADA: Refer to Natural Gas and Propane Installation Code
CSA B149.1- latest revision.
The heater may be vented to the outdoors either vertically or
horizontally.
Optional outside air supply may be directed to the heater
horizontally or vertically.
Be sure that the method selected for venting heater complies with
all codes as required for each particular location
The use of single-wall vent pipe (26 gauge) is recommended. A
section of double-wall vent pipe is recommended when passing
through the roof or wall.
Exhaust end of heater will accept a 4' (10 cm) vent pipe using
the vent adapter. Install the vent adapter with the seam on top,
secure all vent joints with a minimum of 3 #8 x 3/8" sheet metal
screws and seal all joints using a high temperature silicone sealant.
If condensation in the flue is a problem, the flue length should be
shortened or insulated.
Vent pipe must be sloped downward away from the burner 1/4"
(0.6 cm) for ever 10' (3m).
VENT LENGTHS:
• Maximum total vent length allowed in thirty (30') (9.15 m) feet.
• Maximum outside air supply duct allowed thirty (30') (9.15 m) feet.
• Maximum total vent length plus outside air supply length shall not
exceed fifty (50') (15.25 m) feet.
NOTE:
A total of two (2) elbows are allowed for vent and
outside air supply combination. Subtract 5' feet (1.5 m) per
additional elbow from maximum length allowed if 3 or more elbows
are used.
Install a minimum 18" (30 cm) straight length of duct for air intake
or vent before any Tee or elbow.
Alternative Arrangements / Optional Equipment for Venting
Unvented Operation
a) Sufficient ventilation must be provided in the amount of 4 CFM
per 1,000 BTU/hr. firing rate.
b) Refer to ANSI Z223.1 - latest revision, NFPA-54 and local codes
for additional information.
c) Use of optional outside combustion air is not recommended with
unvented heaters due to pressure considerations. Refer to page
16
Horizontal Venting
This heater, when horizontally vented, must be installed with the
approved venting system. For horizontal venting installations these
tube heater are certified as a category III appliance.
a) Four (4") inch (10 cm) O.D. flue pipe is required. Thirty (30')
(9.15 m) feet maximum length is recommended.
b) All flue joints should be sealed using suitable product such as
Enerco | Heatstar ERXL Series Heater
General Electric RTV106 or Permatex Form-A-Gasket Red High
Temperature Silicone Adhesive Sealant.
c) Do not install any elbow or 45 fitting to bring vent lower than
the horizontal tube system.
d) Vent terminal should be installed at a height sufficient to prevent
blockage by snow.
1) Vent must exit building not less than seven (7') feet (2.13 m)
above grade when located adjacent to public walkways.
2) Vent must terminate at least three (3') feet (.91 m) above
any forced air inlet located within ten feet (10') (3.05 m).
3) Vent must terminate at least four (4') feet (1.2 m) below,
four (4') feet (1.2 m) horizontally from, or one (1') foot
(30.5 cm) above any door, window, or gravity inlet into any
building.
4) Vent terminal shall be located at least twelve (12") inches
(30.5 cm) from any opening through which vent gases could
enter the building
5) Vent terminal must be beyond any combustible over hang
Vertical Venting
This heater, when vertically vented, must be installed with the
approved venting system. For vertical vent installations,
ERXL40-150 models are category I appliances. The ERXL175 model
is only Category I when vented vertically with 6" (15.25cm) diameter
vent pipe.
a) Four (4") inch (10 cm) O.D. flue pipe, maximum thirty (30') feet
(9.15 m) in length may be used as shown with approved vent
cap. (See General Requirements on this page for additional
information.)
b) An insulated thimble may be required to pass through
combustible structures (check local codes).
c) All flue joints should be sealed using suitable products (see
recommendation for horizontal venting.)
Common Venting
a) Horizontal run to vent must never exceed 75% of the vertical
height of the vent. Refer to ANSI Z223.1 - latest revision, NFA-54
for proper vent sizes and installation.
b) Open area of common vent must equal the sum of the open
area of individual vents connected to it. (See chart below and
diagrams - page 14.)
c) Use double wall vent as required (check codes.)
d) All joints must be sealed using suitable products.
e) Connections to common stack must be positioned to avoid direct
opposition between streams of combustion gases.
COMMON VENTING - (2) Heaters (Horizontal and Vertical)
Model # H = 6 ft. (1.82 m) H = 8 ft. (2.44 m) H = 15 ft. (4.57 m)
ERXL-40 D = 7" (17.8 cm)
ERXL-60 D = 7" (17.8 cm)
ERXL-80 D = 8" (20.5 cm)
ERXL-100 D = 8" (20.5 cm)
ERXL-125 D = 10" (25.4 cm) D = 10" (25.4 cm)
ERXL-150 D = 10" (25.4 cm) D = 10" (25.4 cm)
ERXL-175 D = 10" (25.4 cm) D = 10" (25.4 cm)
E-14
Operating Instructions and Owner's Manual
.
D = 6" (15.25cm) D = 6" (15.25cm)
D = 6" (15.25cm) D = 6" (15.25cm)
D = 7" (17.8 cm) D = 6" (15.25cm)
D = 8" (20.5 cm) D = 7" (17.8 cm)
D = 8" (20.5 cm)
D = 8" (20.5 cm)
D = 8" (20.5 cm)