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PART 4. VENTING
B. VENTING THE EVO
(TABLE 4-1) VENTING SPECIFICATIONS
Model
Vent
Diameter
Standard Vent Type Optional Vent Type
Minimum Combined Vent
Length
Maximum Combined
Length
HW 299
4"
Plastic
Stainless
6' + (2) 90º elbows
225'
HW 399
4"
Plastic
Stainless
6' + (2) 90º elbows
180'
HW 599
5"
Stainless
Plastic - 6"*
6' + (2) 90º elbows
200'
*The use of 6" PVC will require the purchase of a special adapter from Hamilton Engineering Company, Inc.
(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
Specifications Table above. It is very important that you plan the location properly to eliminate long pipe runs and
excessive fittings. 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).
