Flue Venting - Schwank SET - SETU Owner's Manual

WARNING

11. FLUE VENTING

Inadequate venting of a heater may result in asphyxiation, carbon monoxide
poisoning, injury or death. This heater may use a vent connection or indirect
venting system to remove products of combustion from the space. Seal all vent
connections with high temperature sealant. Venting must be in accordance with
all local, state, provincial, and national codes (ANSI Z223.1/NFPA 54 in USA;
B149.1 in Canada) and as indicated below in this manual.
T
HIS TUBE HEATER IS APPROVED FOR VENTING DIRECTLY TO THE OUTSIDE AND UNVENTED
. T
APPLICATIONS HE SYSTEM MUST NOT BE OPERATED WITHIN A NEGATIVE AIR CONDITION UNLESS COMBUS-
TION AIR IS DUCTED FROM OUTSIDE DIRECTLY TO THE BURNER
I
F NEGATIVE PRESSURE IS EXPERIENCED OR ANTICIPATED
SWITCH SHOULD BE CONNECTED DIRECTLY TO OUTSIDE AIR USING
SWITCH TO OUTSIDE OF BUILDING
UNVENTED (INDIRECT MECHANICAL VENTING SYSTEM)
Indirect venting must not be used if the building experiences a negative air condition. A mini-
mum 10 inch (25 cm) length of single walled vent pipe is to be installed on the swaged end of
the last tube before any Tee, Elbow or Termination Cap is fitted.
USA: Natural or mechanical means shall be provided to supply and exhaust at least 4ft
min/1000Btuh (0.38m
electrical interlock to a dedicated exhaust fan. Exhaust must be located as high as practicable
in the structure above the level of the heater(s). Consult your local code and ANSI Z223.1 lat-
est edition for all venting requirements and practices.
Canada: It is required that the heater(s) be electrically interlocked to dedicated exhaust fan(s)
by means of an Air Proving Switch. Exhaust fan(s) must be sized to create 300 cfm (8.5 cu m/
min) exhaust for every 100,000 Btuh (30 kW) or any fraction thereof of total input of installed
equipment. Exhaust must be located as high as practicable in the structure above the level of
the heater(s). Sufficient supply air must be provided. Consult the latest edition of CSA.B149.1
Section 8 for venting system and air supply requirements.
VENTED DIRECTLY TO THE OUTSIDE
It is the sole responsibility of the installer to adhere to all current local codes and/or ANSI
Z223.1 / CSA.B149.1 latest editions for all venting requirements, and practices.
It is a normal condition that during heat-up and cool-down a tube heater will expand and con-
tract. Allowances for heater expansion must be made in the venting and combustion air ducting.
Improper installation can result in property damage, injury or death.

All vent pipe and adapters are supplied locally by others

All venting must be minimum 26 gauge single wall vent pipe and 4" (10 cm) diameter except
that portion of vent passing through a combustible wall or roof can be 4" type "B" vent as per
CSA International's interim requirement. Refer to Section 11A for vent length requirements.

As an Option, two heaters may be vented through an approved common 4" x 4" x 6" Vent
Tee (10 x 10 x 15 cm), supplied by the manufacturer. Vent pipe from each heater does not
need to be equidistant to the vent Tee, but must comply to requirements below. The two
SET(U)-F / ITT(U)-F Manual
IM091221
RD: FEB 2014
RL: 8B
(
FIELD SUPPLIED
3
/min/kW) input of installed heaters. Some local codes may require an
.
,
THE SECOND PORT
1/4"
PLASTIC HOSE FROM BLOCKED FLUE
).
22
(
INDIRECT VENTING
( )
BARB ON THE BLOCKED FLUE
3
/
)