Evo HW 79 - Venting the EVO

34000 Autry Street, Livonia, MI 48150 • 800.968.5530 • Fax 734.419.0209 • www.hamiltonengineering.com • LIT91127 REV 3/09
VENTING
Page 15 of 50
DANGER
It is extremely important to follow these venting instructions carefully. Failure
to do so can cause sever 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 re 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.
B. VENTING THE EVO
HW 79 3" Plastic Stainless 6' + (2) 90° elbows 225'
HW 129 3" Plastic Stainless 6' + (2) 90° elbows 200'
HW 199.1 3" Plastic Stainless 6' + (2) 90° elbows 100'
HW 179 3" Plastic Stainless 6' + (2) 90° elbows 200'
HW 299 4" Plastic Stainless 6' + (2) 90° elbows 3"=30' 4"=225'
HW 399 4" Plastic Stainless 6' + (2) 90° elbows 180'
HW 599 5" Stainless Plastic - 6”
* 6' + (2) 90° elbows 200'
Model
Vent
Diameter
Standard
Vent Type
Optional Vent
Type
Minimum combined vent
length
Maximum
combined length
HW 199 3" Plastic Stainless 6' + (2) 90° elbows 95'
* The use of 6” PVC will require the purchase of a
special adapter from Hamilton Engineering, Inc.
(TABLE 4-1) VENTING SPECIFICATIONS
(TABLE 4-2) EQUIVALENT FEET
Fittings or Piping Equivalent Feet
90 degree elbow 5’
45 degree elbow 3’
Coupling 0
Air inlet elbow 6’
Exhaust coupling 1’
The inlet and exhaust pipes on the top of the cabinet should be the diameter and material indicated in the Venting
Specications Table above. It is very important that you plan the location properly to eliminate long pipe runs and
excessive ttings. Inlet pipe size must not be reduced. Do not combine the inlet air or exhaust with any other inlet
or exhaust pipe including either to an additional similar appliance, unless you have purchased an engineered
Common Venting System from Hamilton Engineering, Inc. The joints must be properly cleaned, primed and
cemented if plastic, and sealed per the manufacturer’s instructions if stainless. The piping must also be properly
supported as per Local and National Standard Plumbing Codes. It is important that the piping must be clean and
free from burrs, debris, ragged ends and particles of PVC (if applicable).