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Installation instructions
15
• All vertical terminating vent installations
• Horizontal terminating vent installations where the
total vent length is greater than 10 feet
• Vent installations where any section of the exhaust
vent pipe passes through an unconditioned space.
Note: Do not install condensate drain in areas where it
may freeze.
1. Install condensate drain as close to heater as
possible.
2. Use 3/8" ID high temperature silicone tube to
connect to condensate drain port. Do not use copper
piping for any portion of the condensate drain.
3. Form a condensate trap by means of a 3" loop
partially filled with water.
4. To increase the tube length, connect to end of the
high temperature silicon tubing with vinyl tubing, PVC or
CPVC pipe. Do not reduce the internal diameter at any
point.
5. Dispose of condensate according to local codes.
Fig. 16 Condensate drain installation
Room sealed installation (TWIN PIPE SYSTEM)
Installing this water heater as a room sealed (TWIN
PIPE SYSTEM) is the recommended method. Contact
your dealer for available vent termination kits and vent
materials for this water heater.
The exhaust and combustion air piping must vent
directly to the outside of the structure.
Fig. 17
Combustion air pipe: ≤ 26 ft (8 m) from collar
Exhaust vent pipe: ≤ 26 ft (8 m) from collar
Fig. 18
3" Venting Z-flex ProTech Heat Fab
90°
Condensate
Drain Tee
2SVEVWCF03 FST3 &
FSDF3
93PPLSTEE
Horizontal
Condensate
Drain
2SVEDWCF03 FSHDT3 9321
Condensate
Drain Tube
2SVEDTK24 N/A 7000TUBE
Table 8 Approved Condensate Drain Part Numbers
Warning: In areas where outside
temperatures routinely come close to
freezing, sealed combustion operation
is required. Use separate terminations
for combustion and vent, which must be
installed on the same wall or roof
surface, however never facing the
direction of prevailing winds. Failure to
do so may result in heat exchanger
freezing up and bursting. This failure is
not covered under the manufacturer's
warranty.
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