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Section 3. Installation
HORIZONTAL OR VERTICAL VENTING FLEXIBLE DUCT (FLEX-VENT)
(See Figures 15, 16, 17 & 19)
Do NOT
combine exhaust vent pipes
to a common exhaust vent in multiple
unit installations. Run separate vent
pipes.
!
CAUTION
150 mm (6 in.) Flex-Vent
(Vertical or Horizontal)*
No. of 90° Bends
Maximum Length in Feet (M)
0
11.6 m (38 ft.)
1
8 m (26 ft.)
*Minimum vent length is 0.34M (1 ft.) or in accordance with
vent manufacturer’s instruction, and local and national
codes. Horizontal vents 1 m (3 in) or less in length do not
require a condensate tee, but must slope down toward the
outlet at 2 cm to the meter (1/4 in / ft.) to allow condensate
to drain.
** Radius minimum to be 110 mm (4.33 in) as shown in
Figure 19.
NOTE: THE ALLOWABLE VENT RUNS
FOR EACH VENT PIPE DIAMETER
ARE DIFFERENT AND CAN NOT BE
EXCEEDED.
It is recommended that vent runs over
5.4 m (18 ft) may need to be insulated to
reduce condensation related problems
and/or the use of a condensate trap in
the vent run close to the heater may be
necessary in certain installations such
as cold climates. Horizontal vents 1 m
(3 feet) or less in length do not require
a condensate tee. The Turbotemp heater
is suitable for through-the-wall venting.
See Table 8 for maximum permissible
Flexible Vent lengths.
NOTE
After installation, installer must check for correct and safe operation of the heater.
NOTE: KEEP A 150 CM (6 IN) MINIMUM CLEARANCE BETWEEN THE VENT PIPE AND
COMBUSTIBLE SURFACES. FOLLOW THE VENT MANUFACTURER’S INSTRUCTIONS
AND CODE REQUIREMENTS.
Each 90° bend reduces the maximum horizontal vent run by 3.6 m (12 feet) and each 45° bend
in the vent run reduces the maximum vent run by 1.8 m (6 feet). See Table 8 for the maximum
vent length using one 90° bend.
Corrosive Vapors and Possible Causes
Area
Likely Contaminants
Chlorinated swimming
pools and spas
Pool or spa cleaning chemicals. Acids, such as hydrochloric or muriatic acid.
New construction and
remodeling areas
Glues and cements, construction adhesives, paints, varnishes, and paint and
varnish strippers. Waxes and cleaners containing calcium or sodium chloride.
Beauty parlors
Permanent wave solutions, bleaches, aerosol cans containing
chlorocarbons or fluorocarbons.
Refrigeration plants or various
industrial finishing and
processing plants
Refrigerants, acids, glues and cements,
construction adhesives.
Dry cleaning and laundry areas
Bleaches, detergents, or laundry soaps containing chlorine.
Waxes and cleaners containing chlorine, calcium or sodium chloride.
Table 5.
Flexible Vent
Section
110 mm (4.33 in)
Radius Minimum
MINIMUM FLEX BEND RADIUS
Figure 19.
Table 8.
