34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91127US REV 5/2018
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VENTING
Please note: Venting system may contain one or more of the above materials.
The EVO is a direct vent appliance. The EVO is listed as a Category IV. Condensing Appliance.
(The EVO Venting is rated at Zero Clearance to combustibles.)
PART 4. VENTING
A. APPROVED VENTING MATERIALS
All vent pipe materials and fittings must comply with the following:
Item
Material
Standards for installation in:
United States
Canada
Vent pipe
and
fittings
AL 29-4C Stainless
ANSI/ASTM UL1738
UL1738
PVC schedule 40*
ANSI/ASTM D1785
CPVC and PVC venting must be ULC-
S636 Certified. IPEX is an approved vent
manufacturer in Canada supplying vent
material listed to ULC-S636.
CPVC schedule 40
ANSI/ASTM F441
Polypropylene
ULC-S636
ULC-S636
Pipe cement
& primer
PVC
ANSI/ASTM D2564
IPEX System 636
Cements & Primers
CPVC
ANSI/ASTM F493
NOTICE: DO NOT USE CELLULAR (FOAM) CORE PIPE
DANGER
It is extremely important to follow these venting instructions carefully. Failure to
do so can cause severe personal injury, death or substantial property damage.
WARNING
This vent system will operate with a positive pressure in the vent pipe. Do not
connect vent connectors serving appliances by natural draft into any portion of
mechanical draft systems operating under pressure.
Note: For concrete construction or to meet certain fire codes, exhaust and inlet piping at the wall penetration to
the EVO must be CPVC Schedule 40 or 80 or stainless. The balance from the penetrated wall to the outside may
be PVC Schedule 40 or 80.
Note: If return water temps exceed 130ºF, use of PVC is NOT recommended, even though product is
approved as such. Contact Hamilton Engineering at 800.968.5530 for further clarification.
SPECIAL VENTING SYSTEM DESIGN NOTES
The EVO efficiency testing and ratings are based on a sealed, two pipe vent
system; however, many other vent configurations are available as factory
engineered solutions. Please contact the factory if exceptions are required for
your installation.