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Installation instructions
may result in a hazardous condition. For specific
questions concerning vent material, specifications,
usage or installation, contact the vent manufacturer
directly.
Vent Safety System
The 2400 E will shut down if inadequate exhaust
venting is detected or a lack of combustion air is
provided to the unit. See troubleshooting section on
page 33. Correct the problem and then reset the heater
before operating.
3.6.2 Vent connections
Exhaust vent connection
B Attach the flue gas exhaust accessory (8 705 504
137) to the top of the unit (position 1) using the 4
screws and gasket provided.
B Insert single wall stainless steel vent pipe into the
exhaust vent adapter 1.5” and tighten the clamp ( Fig.
10 position 2).
Note: 3 to 4 inch increaser required when using 4 inch
pipe.
Note: Failure to fully insert vent pipe and tighten clamp
may cause flue gas leakage or condensate damage that
is not covered under the manufacturer's warranty.
Fig. 10 Exhaust vent connection
Combustion air inlet connection
The combustion air inlet accessory can be connected
either to the top right or left of the appliance. The
unused side must be sealed.
B Attach the combustion air inlet accessory (8 705
504 115) to the top of the unit (position 3) using the
3 screws and gasket provided.
B Install combustion air pipe over the air inlet acces-
sory. If using flexible piping, secure with a clamp
(position 4, not included).
Fig. 11 Combustion air inlet connection
Vent manufacturer Contact information
Z-flex www.z-flex.com
800-654-5600
ProTech Industries www.protechinfo.com
800-766-3473
Heat-Fab www.heatfab.com
800-772-0739
Table 3 Vent manufacturer contact information
Z flex ProTech Heat Fab
3” Venting
3” Horizontal
termination
2SVSTB03 FSTB3 9390 TEE
3” Vertical
termination
2SVSRCF03 FSRC3 5300CI
90°
Condensate
Drain Tee
2SVEVWCF03
FST3 &
FSDF3
93PPLSTEE
Horizontal
Condensate
Drain
2SVEDWCF03 FSHDT3 9321
Vertical
Condensate
Drain
2SVSEVDP03 N/A N/A
Condensate
Drain Tube
2SVEDTK N/A 7000TUBE
4” Venting
3” to 4”
Increaser
(Required)
2SVI0304 FS0304TI 9374
4” Horizontal
termination
2SVSRTF04 FSTB4 9490TEE
4” Vertical
termination
2SVSRCF04 FSRC4 5400CI
90°
Condensate
Drain Tee
2SVEVWCF04
FST4 &
FSDF4
9416 &
9417D
Horizontal
Condensate
Drain
2SVEDWCF04 FSHDT4 9421
Vertical
Condensate
Drain
2SVEVDP04 FSUCD4 N/A
Condensate
Drain Tube
2SVEDTK N/A 7000TUBE
Table 4 Approved vent termination and condensate
drain part numbers (subject to change)