Warning – Schwank ultraSchwank EIH User Manual
Page 22
22
UHE-F / EIH-F I&O Manual
IM100205
RD: MAY 2014
RL: 06A
11. FLUE
VENTING
Inadequate venting of a heater may result in asphyxiation, carbon monoxide
poisoning, injury or death. This heater may be directly or indirectly vented from
the space. Seal all direct vent connections with high temperature sealant. Vent-
ing 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 in this
manual.
T
HIS
TUBE
HEATER
IS
APPROVED
FOR
VENTING
DIRECTLY
TO
THE
OUTSIDE
AND
UNVENTED
(
INDIRECT
VENTING
)
APPLICATIONS
. T
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
,
THE
SECOND
PORT
(
BARB
)
ON
THE
BLOCKED
FLUE
SWITCH
SHOULD
BE
CONNECTED
DIRECTLY
TO
OUTSIDE
AIR
USING
1/4”
PLASTIC
HOSE
FROM
BLOCKED
FLUE
SWITCH
TO
OUTSIDE
OF
BUILDING
(
FIELD
SUPPLIED
).
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: Heater indirectly vented: Natural or mechanical means shall be provided to supply and
exhaust at least 4ft
3
/min/1000Btuh (0.38m
3
/min/kW) input of installed heaters. Some local
codes may require an 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 latest edition for all venting requirements and practices.
Canada: Heater indirectly vented: 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 struc-
ture above the level of the heater(s). Sufficient supply air must be provided. Consult
CSA.B149.1 latest edition for requirements.
VENTED DIRECTLY TO THE OUTSIDE - refer to Section 11A for vent lengths
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 venting must be minimum 26 gauge single wall vent pipe of 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, and 6” diameter vent pipe. The two
heaters must then be controlled by a single common thermostat or “ON/OFF” switch.
All vent pipe and adapters are supplied locally by others
WARNING