Schwank SER(IR) - Manual (Page 14)

GP-MSER-BX-11A
SER / IR Manual
RD: March 2006
RL: 11A
KH
Page 10
All venting must be single wall "C" vent except the portion of vent passing through a combus-
tible wall or roof. Type "B" vent may then be used as per CSA requirements. When venting
horizontally the flue vent system should slope downwards approximately 1/4" per foot toward
the vent terminal, starting at the termination of the radiant tube. For horizontal through the
wall venting, the approved Manufacturers 4” or 6” vent terminal should be used. Install the
flue vent terminal 18" from the outside wall to the inside end of terminal opening. The flue
vent terminal used must be of the approved types supplied by the manufacturer or supplied by
an approved "B" vent manufacturer.
The total maximum allowable combined length of vent and combustion air duct is 50' for
SER / IR 60 and 45. Total maximum allowable vent and duct is reduced by ten feet for every
90
o
elbow installed in the vent or duct.
Should the system be installed with a 90
o
or with a 180
o
elbow in the radiant tube, 10' or 20'
respectively must be deducted from the length of vent and duct.
Neither the flue vent nor the combustion air duct is to exceed 50 ft in length. Lengths greater
than those allowed may create condensation problems and will void CSA design Certification.
The horizontal flue vent shall not terminate less than the following distances:
• Three feet above grade level
• Twelve inches from combustion air inlet of any heater with input up to 100,000 Btu/hr.
• Three feet from combustion air inlet of any heater with input over 100,000 Btu’s
• Directly above a gas utility meter or service regulator
• Directly below a soffit or overhang
• Twelve inches from sides and bottom and eighteen inches from top when close to the cor-
ner of a building
VENTED APPLICATION
FIGURE 11: VENT TERMINATION