Flue Venting - Schwank SEM 200-70 Installation And Owner's Manual

11. FLUE VENTING

T
HIS SEM(U) / IT(U)
VENTING APPLICATIONS
NEGATIVE AIR CONDITION
OUTSIDE DIRECTLY TO THE BURNER
I
F A SEVERE NEGATIVE PRESSURE IS EXPERIENCED OR ANTICIPATED
(
OND PORT BARB
RECTLY TO OUTSIDE AIR USING
SWITCH TO OUTSIDE OF BUILDING
).
TRA
INDIRECT VENTED APPLICATION
A length of 'C' Vent is to be installed on the
swaged end of the last tube before any Elbow
or Vent Cap is fitted. When the heater is in-
stalled and indirectly vented, it is required in
Canada that the heater be electrically inter-
locked to an independent exhaust fan by
means of an Air Proving Switch. The exhaust
fan must be sized to create 3CFM for every
1000 Btu/hr or fraction thereof, of total input
of installed equipment. Consult CSA.B149.1-
00 latest edition for requirements.
DIRECT VENTED APPLICATION
A length of 'C' Vent is to be installed on the
swaged end of the last tube before any Elbow
is fitted. 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
requirement. When venting horizontally, the
flue vent system must slope downwards ap-
proximately 1/4" per foot toward the vent ter-
minal, starting at the termination of the radi-
ant tube. For horizontal through the wall
SERIES IS APPROVED FOR BOTH DIRECT AND INDIRECT
. T
HE SYSTEM MUST NOT BE OPERATED WITHIN A
,
UNLESS COMBUSTION AIR IS BROUGHT IN FROM
)
ON THE BLOCKED FLUE SWITCH SHOULD BE CONNECTED DI-
.
1/4"
PLASTIC HOSE FROM BLOCKED FLUE
(
HOSE KIT NOT SUPPLIED
In the USA when a heater is installed un-
vented the system requires consideration of
normal infiltration and introduction of outside
air by natural or mechanical means, and/or
electrically interlocked to an independent ex-
haust fan. Consult your local codes and ANSI
Z223.1 latest edition. for all venting require-
ments, and practices.
venting, the approved 4" or 6" horizontal wall
vent terminal should be used and mounted
18" from the outside wall to the inside edge
of terminal opening. The flue vent terminal
used must be of the approved type supplied
by the manufacturer or by an approved "B"
vent manufacturer. It is the responsibility of
the installer to be familiar with current local
codes or ANSI Z223.1 / CSA.B149.1-00 lat-
est editions for all venting requirements, and
practices.
Page 13
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THE SEC-
–
OPTIONAL EX-
GP-MSEM-BX-03B
SEM(U) / IT(U) Manual
RD: Sept, 2005
RL: 03B
KH