59SP6A: Installation, Start-up, Operating, Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
45
pipe above the drain. See
. When using the External Vent Trap
Kit, refer to those instructions for proper drain connections.
The tee may also be connected to the intake air pipe on the side of the
casing. See
.
In any configuration, it will be necessary to add the equivalent length of
the tee (15 feet/5 M) to the Total Equivalent Vent Length of the venting
system.
The measured length of pipe used in a single or 2-pipe termination is
included in the total vent length. Include deductions from the Maximum
Equivalent Vent Length (MEVL) contained in the Venting Tables for
elbows and flexible vent pipe. Factory accessory concentric vent
terminations or pipe lengths and elbows used for “standard” vent
terminations (see vent termination figures associated with
) do
not require a deduction from the Maximum Equivalent Vent Length.
Include a deduction for a Tee when used for Alberta and Saskatchewan
terminations.
A170122A
Fig. 52 – Recommended Combustion Air Inlet Moisture Trap
NOTE:
Polypropylene venting systems MAY require additional
deductions from the MEVL, or additions to the TEVL, for vent
terminations and flexible pipe sections. See the polypropylene venting
system manufacturer’s instructions for details on equivalent lengths of
vent terminations and flexible vent pipes, and for calculating total vent
lengths.
To calculate the Total Equivalent Vent Length (TEVL) of the venting
system:
1. Measure the individual distance from the furnace to the termination
for each pipe.
2. Count the number of elbows for each pipe.
3. For each pipe, multiply the number of elbows by the equivalent
length for the type of elbow used. Record the equivalent length of
all the elbows for each pipe.
4. If a Tee is used on the termination (Alberta and Saskatchewan,
when required) record the equivalent length of the Tee used.
5. Calculate Total Equivalent Vent Length by adding the equivalent
lengths of the fittings to the lengths of the individual vent and
combustion air pipes.
Representative drawing only, some models may vary in appearance.
TO CODE--APPROVED DRAIN OR CONDENSATE PUMP
Tee
Dry Well
Cap
(water tight
and removable)
Tee
Dry Well
Cap
(water tight
and removable)
Tee
Dry Well
Cap
(water tight
and removable)
Recommend “T” fitting with 4--inch minimum height standpipe (
A
) of same diameter or larger extending upward.
A
A
A
NOTICE
!
ADDITIONAL
INFORMATION
FOR
POLYPROPYLENE
VENTING SYSTEMS
Polypropylene venting systems include flexible vent pipe. These
flexible vent pipes have a different equivalent vent length than straight
sections of PVC/ABS DWV vent pipe. Be sure to make the appropriate
deductions from the Maximum Equivalent Vent Length (MEVL), or
additions to the Total Equivalent Vent Length (TEVL), when applying
flexible vent pipes in polypropylene venting systems. See the
polypropylene vent system manufacturer’s installation instructions for
details.
When using metric-sized venting systems, use these equivalencies for
obtaining the proper MEVL from the Tables:
Use 2” Vent Tables for 60 mm (o.d.) vent systems
Use 3” Vent Tables for 80 mm (o.d.) vent systems
Use 4” Vent Tables for 100 mm (o.d.) vent systems
