Concentric Termination Installation
1.Concentric terminations must be ordered separately. SUF 100 120 - 250 models must use the 4 inch concentric termination; Part Number: 9006328005. Contact your local distributor or call the parts department phone number on the back cover of this manual to order concentric terminations.
2.Determine the location for the termination.
Note: Roof termination is preferred since it is less susceptible to damage, has reduced chances to intake contaminants and vent vapors are less visible.
3.When installing a concentric termination vertically through the roof; ensure that all exterior vertical clearance requirements for the concentric termination, shown in Figure 30 on page 31 are being maintained. These clearances and those cited by local and national codes must be maintained.
4.When installing a concentric termination vertically through a flat roof, the termination's vent cap must be a minimum of 10 feet (3 m) away from any parapet, vertical wall or structure as shown in Figure 28.
CONCENTRIC TERMINATION(S) MUST BE A MINIMUM OF 10 FEET (3 m) AWAY FROM ANY PARAPET, VERTICAL WALL OR STRUCTURE.
4 INCH CONCENTRIC TERMINATION
FLAT ROOF CLEARANCE
Figure 28
Note: If this required 10 foot (3 m) distance to a parapet, vertical wall or structure cannot be maintained, standard terminations must be used. See Vertical Termination Installation on page 27.
5.When installing a concentric termination through a sidewall; ensure that all exterior sidewall clearance requirements for the termination, shown in Figure 49 on page 37, are being maintained. These clearances and those cited by local and national codes must be maintained.
6.When installing multiple concentric terminations vertically through a roof or horizontally through a sidewall ensure the required clearances between terminations and groupings of multiple terminations are maintained. See pages 32 and 33 for more information.
7.Cut a 5 inch (13 cm) diameter hole for the 4 inch concentric termination where the termination will pass through the wall or roof.
Note: Beware of concealed wiring and piping when cutting through the wall or roof.
8.When installing multiple concentric terminations vertically through the roof in the same location the termination caps for all concentric terminations must be at the same height measured from ground. See Multiple Concentric Termination
Arrangements on page 33.
9.Determine if the concentric termination will need to be shortened or lengthened to accommodate required clearances or to ensure all vent caps are at the same height when installing multiple terminations vertically through the roof in the same location.
See Figure 29 on page 31 for the maximum and minimum lengths allowed for the 4 inch concentric termination.
When extending the length of a concentric termination do not use couplings. The use of couplings will restrict flow through the termination and may cause improper combustion. The termination’s intake air and vent pipes must be replaced with longer sections of the same pipe material when extending the length of the termination.
Use only
When shortening the length of the termination carefully measure and cut the larger (intake air) pipe first. Cut the same amount of pipe off of the smaller (vent) pipe.
10.Proceed to 4 Inch Concentric Termination Installation on page 31.
30
