Schwank SEB(U) - Manual (Page 15)

SP-MSEB-BX-10A
SEB Manual
RD: JUNE 2004
RL: 10
KH
Page 11
10. FLUE VENTING
The SEB/SEBU series is approved for both direct vented and indirect vented applica-
INDIRECT VENTED APPLICATION
DIRECT VENTED APPLICATION
All venting must be single wall "C" vent
except that portion of vent passing through a
combustible wall or roof then type "B" vent
may be used as per CSA's interim require-
ment. When venting horizontally, the flue
vent system must slope downwards approxi-
mately 1/4" per foot toward the vent terminal,
starting at the termination of the radiant tube.
For horizontal through the wall venting, the
approved Schwank 4" or 6" vent
terminal should be used. Install the flue vent
terminal 18" from the outside wall to the in-
side end of terminal opening. The flue vent
terminal used must be of the approved type
supplied by Schwank or supplied by an ap-
proved "B" vent manufacturer. It is the re-
sponsibility of the installer to be familiar and
current with local codes or ANSI Z223.1/
CSA.B149.1-00 latest editions for all venting
requirements and practices.
NOTE: 1
FIGURE 12 FLUE VENT
experienced or anticipated, the second
port (barb) on the blocked flue switch
should be connected directly to outside of
building (not supplied).
When the heater is installed and indirectly
vented, it is required in Canada that the heater
be electrically interlocked to an independent
exhaust fan by means of an Air Proving
Switch. The exhaust fan must be sized to cre-
ate 3CFM for every 1000 Btu/hr or fraction
thereof, of total input of installed equipment.
Consult CSA.B149.1-00 latest edition for re-
quirements. In the USA when a heater is installed un-
vented the system requires consideration of
normal infiltration and introduction of out-
side air by natural or mechanical means,
and /or electrically interlocked to an inde-
pendent exhaust fan. Consult your local
codes and ANSI Z223.1 latest edition. to
determine the specific requirements.
The system must not be operated in a
negative air condition, unless combustion
air is brought in from outside directly to
the burner. If a severe negative pressure is