Trane Gas Unit Heaters 维护手册
Installation: Piping
GTND-SVX01B-EN
27
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Unit sizes 30–120: Use 4” (120 mm) flue pipe.
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All heaters must be vented with a single or double wall
pipe listed for Category III positive pressure vent
systems.
pipe listed for Category III positive pressure vent
systems.
Unit sizes 30–120: Double wall pipe can be used with
limitations as shown in Figure X. As illustrated, a single
5 foot (1.52 m) section of double wall vent pipe with a
draft hood connector may be used between the
appliance vent connection and the vent terminal.
limitations as shown in Figure X. As illustrated, a single
5 foot (1.52 m) section of double wall vent pipe with a
draft hood connector may be used between the
appliance vent connection and the vent terminal.
2. Each unit must have an individual vent pipe and
vent terminal! Unit MUST NOT be connected to other
vent systems or to a chimney.
vent systems or to a chimney.
3. The maximum equivalent length of vent pipe must not
be exceeded:
•
•
Unit sizes 30–120: Category III units are limited to a
maximum of 40 feet (12.19 m) equivalent length of
vent pipe; equivalent length is the total length of
straight sections PLUS 5 feet (1.5 m) for each 90°
elbow and 2.5 feet (0.75 m) for each 45° elbow.
maximum of 40 feet (12.19 m) equivalent length of
vent pipe; equivalent length is the total length of
straight sections PLUS 5 feet (1.5 m) for each 90°
elbow and 2.5 feet (0.75 m) for each 45° elbow.
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Unit sizes 150–400: The vent pipe equivalent length
must not exceed 50 feet (15.2 m); equivalent length
is the total length of straight sections PLUS 15 feet
(4.6 m) for each 90° elbow and 8 feet (2.44 m) for
each 45° elbow.
must not exceed 50 feet (15.2 m); equivalent length
is the total length of straight sections PLUS 15 feet
(4.6 m) for each 90° elbow and 8 feet (2.44 m) for
each 45° elbow.
4. Seal all vent pipe joins and seams to prevent leakage.
Use General Electric RTV-108, Dow-Corning RTV-732,
or equivalent silicone sealant with a temperature
rating of 500°F (see
or equivalent silicone sealant with a temperature
rating of 500°F (see
). Attach the draft
hood connector to the appliance vent connection with
screws (3 minimum) and seal the joint with silicone
sealant. Install a vent thimble in the wall. Insert the vent
pipe through the thimble and attach it to the adapter on
the appliance. Seal the joint with silicone sealant or
two wraps of aluminum foil tape. Install a vent cap on
the outlet pipe and secure with screws (3 minimum).
screws (3 minimum) and seal the joint with silicone
sealant. Install a vent thimble in the wall. Insert the vent
pipe through the thimble and attach it to the adapter on
the appliance. Seal the joint with silicone sealant or
two wraps of aluminum foil tape. Install a vent cap on
the outlet pipe and secure with screws (3 minimum).
Unit sizes 30–120: If using a single section of double
wall vent pipe, seal the annular space between the
inner and outer sections of the draft hood connector
with a high temperature silicone sealant.
wall vent pipe, seal the annular space between the
inner and outer sections of the draft hood connector
with a high temperature silicone sealant.
5. A vent cap must be supplied by the customer for each
power vented unit:
Unit sizes 30–120: Use an Amerivent Americap or
Metalbestos vent cap. The vent pipe diameter must be
4”.
Metalbestos vent cap. The vent pipe diameter must be
4”.
Unit sizes 150–400: Use a Breidert Type L, Fields
Starkap, or equivalent vent cap. The the vent pipe
diameter must be as specified in
Starkap, or equivalent vent cap. The the vent pipe
diameter must be as specified in
unit sizes are factory equipped with the required flue
size collar; attach in place (if not mounted to outlet);
refer to included vent collar instruction sheet for
additional requirements.
size collar; attach in place (if not mounted to outlet);
refer to included vent collar instruction sheet for
additional requirements.
6. Through the wall venting for these appliances shall not
terminate over public walkways, or over an area where
the condensate or vapor could create a nuisance,
the condensate or vapor could create a nuisance,
hazard, or could be detrimental to the operation of
regulators, relief valves, or other equipment:
•
regulators, relief valves, or other equipment:
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Unit sizes 30–120: Refer to
•
Unit sizes 150–400: Refer to
.
•
All unit sizes: Refer to
and
.
7.
The venting system for these appliances shall
terminate at least 4 feet (1.2 m) below, 4 feet (1.2 m)
horizontal from, or 1 foot (0.3 m) above any door,
window, or gravity vent air inlet into the building.
terminate at least 4 feet (1.2 m) below, 4 feet (1.2 m)
horizontal from, or 1 foot (0.3 m) above any door,
window, or gravity vent air inlet into the building.
8. Vent terminal:
Unit sizes 30–120: The vent terminal must be installed
with a minimum horizontal clearance of 4 feet (1.2 m)
from electrical meters, gas meters, regulators, and
relief equipment.
with a minimum horizontal clearance of 4 feet (1.2 m)
from electrical meters, gas meters, regulators, and
relief equipment.
Unit sizes 150–400: The vent terminal must be at least
3 feet (1 m) above grade, or in snow areas, at least
3 feet above the snow line to prevent blockage by
snow.
3 feet (1 m) above grade, or in snow areas, at least
3 feet above the snow line to prevent blockage by
snow.
9. The vent terminal must be at least 12 inches (305 mm)
from the exterior of the wall that it passes through to
prevent degradation of the building materials by flue
gasses.
prevent degradation of the building materials by flue
gasses.
10. Unit sizes 150–400: The vent terminal must be installed
with a minimum horizontal clearance of 4 feet (1.2 m)
from electric meters, gas meters, regulators, and relief
equipment.
from electric meters, gas meters, regulators, and relief
equipment.
11. Maintain clearance between the vent pipe and
combustible materials according to vent pipe
manufacturer’s instructions.
manufacturer’s instructions.
12. Seal all vent pipe joints and seams to prevent leakage.
Use General Electric RTV-108, Dow-Corning RTV-732,
or equivalent silicone sealant with a temperature
rating of 500°F, or 3M #425 aluminum foil tape (or
equivalent). The vent system must be installed to
prevent collection of condensate. Pitch horizontal
pipes downward 1/4 inch per foot (21 mm per meter)
toward the outlet for condensate drainage.
or equivalent silicone sealant with a temperature
rating of 500°F, or 3M #425 aluminum foil tape (or
equivalent). The vent system must be installed to
prevent collection of condensate. Pitch horizontal
pipes downward 1/4 inch per foot (21 mm per meter)
toward the outlet for condensate drainage.
Unit sizes 30–120: Install a tee with a condensate drain
at the low point of the pipe (see
at the low point of the pipe (see
). As an
alternate, a 3/8 inch diameter hole may be drilled at the
low point of the pipe for condensate drainage.
low point of the pipe for condensate drainage.
13. Horizontal portions of the venting system shall be
supported at minimum intervals of 4 feet (1.2 m) to
prevent sagging (in Canada, support at 3 foot (1 m)
minimum intervals).
prevent sagging (in Canada, support at 3 foot (1 m)
minimum intervals).
14. Insulate pipe where appropriate:
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Unit sizes 30–120: Avoid running vent pipe through
unheated spaces; when this cannot be avoided,
insulate the pipe to prevent condensation of
moisture on the walls of the pipe. Insulate vent pipe
runs longer than 10 feet (3 m). Insulation should be
a minimum of 1/2 inch (12.7 mm) thick foil-faced.
unheated spaces; when this cannot be avoided,
insulate the pipe to prevent condensation of
moisture on the walls of the pipe. Insulate vent pipe
runs longer than 10 feet (3 m). Insulation should be
a minimum of 1/2 inch (12.7 mm) thick foil-faced.