an update on side yard venting presented by: howard anderson, bruins plumbing (edmonton, red deer)...
TRANSCRIPT
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AN UPDATE ON SIDE YARD VENTING
P R E S E N T E D B Y:H O W A R D A N D E R S O N , B R U I N S P L U M B I N G
( E D M O N T O N , R E D D E E R )
D AV I D M A C T AV I S H , E M C O ( C A L G A R Y, L E T H B R I D G E )
Builder’s Technical Session
In Partnership with:
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Changes to Venting Requirements
What were the concerns?How did the STANDATA come to be?What does the new Standata say?How can installations avoid problemsCritical points for good installations
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The Issues that Prompted Change
Municipalities were
receiving complaints NoiseIntake of exhaust
gasesBuild-up of iciclesFrosting on fences
& houses
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Recognition at the Code Level
The B149 Gas Code current edition 2010 was revised and contains this new requirement:
• A vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces
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The Goal of the Standata
Issued in September, by the Safety Codes Councils’ gas technical council (G-01-10)
Goals:To ensure the safe and effective venting of
gas heating appliancesAdd some parameters around the general
sentence in the B149 Gas code, to minimize the effect of the emissions of vents for furnaces, boilers and hot water heaters
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Specific Wording of the Standata
Key Items in the STANDATA:Vents Category III or IV appliancesRedirection of exhaust plumeThe effect of the vent with property
lines Less than 4 feet 4 feet to 8 feet Greater than 8 feet
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Standata Requirements
In side yards with a minimum unobstructed distance of 4 feet (1.2 metres) and up to 8 feet• There needs to be a means of re-directing the
vent with a certified fitting by:- a Tee or a 90 degree elbow- or a termination acceptable to the authority
having jurisdiction
• Must be installed according to manufacturers installation instructions
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Examples of Manufacturers Directions
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Avoiding Icicles and Severe Frosting
Condense vent gasses as much as possible inside the house
Slope to inside Use long enough runs for condensing to occur Provide proper support for the runs to encourage drainage Consider up-sizing the vent piping Consider the length of the vent exhaust pipe on the exterior Avoid concentrating all vents in one area; spacing between
vents Consider insulating the pipe Consider using after market condensers
ALWAYS Install according to manufacturers directions
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Placement of Vents, Climate and House Geometry
Ensure properseparation of vent
hoods Consider prevailing
winds in the side yard Don’t place vents near
bump–outs Consider future decks,
number of stories Consider separating
intakes and exhausts on different walls of the home
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Consider Venting Through the Roof
• Consider whether vent is on windward or leeward side of roof
• Vents are usually small enough to vent through wall cavities
• Mechanically support the vent at the top• Discharge out the leeward side• Glue joints must be done well
Right glue, right pipe, right gluing method See IPEX Manual
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Roof Venting - Rheem
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Avoiding Noise Issues
Placing too many appliances too close together
Sizing of the vent pipes
Stress on the vent
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Better Installs
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Better Installs
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Other Installations
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Coordinate HVAC and Plumbing Installs
Builders need to collaborate with their trades Locations of
mechanical rooms, decks
Locations on drawings Appliance placements Locations on site Coordination between
plumbing and HVAC installs
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Innovative Installs
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Issues Need to be Corrected
As a site supervisor, raising issues with the installing trade can resolve poor installation issues
Work with your code authoritiesProper de-ration for high altitude
appliances will help with the amount of condensation that occurs in the vent plume
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Set Consumer Expectations
At point of saleAt time of walk through
Temporary frosting to be expected Icicles need to be taken down Frost needs to be cleaned from intake screens Fine insect screens cannot be used Potential noise
Permanent piece in their turnover documents
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In Summary
Proper Installs are CRITICAL• Diversion according to AHJ and
manufacturers instructions• Coordination of trades• Maximize condensing to the interior• Watch placement on the exterior for:oProper separationoPrevailing windsoHouse configurations
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In Summary
•Designers and Site supervisors need to
play a roleInspections can help nip issues during construction •Educate homeowners on:
oExpectationsoMaintenance required
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Questions?