•at least 4 feet below or horizontally from, or 1 foot above, any doors or windows or gravity air inlet to a building
•At least 3 feet above any forced air inlet located within 10 feet
•At least 4 feet horizontally from electric meters, gas meters, regulators and relief equipment
•At least 7 feet above grade adjacent to walkways or sim- ilar traffic areas.
Allow at least 3 feet vertical clearance over vent termina- tion when terminating under an overhang or deck.
Avoid corners or alcoves where snow or wind could have an effect. Exhaust may affect shrubbery and some building materials. Keep shrubbery away from termination. To pre- vent staining or deterioration, sealing or shielding exposed surfaces may be required.
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Clearance
2787 0297
FIGURE 14: Typical Special Gas Vent Pipe Installation (Horizontal-Positive Pressure)
8.
Fire Hazard. Do not run the heater vent into a common vent with any other appliance. Do not run the Special Gas Vent into, through, or within any active vent such as a factory built or masonry chimney.
Table 6: Maximum Vent Length
4” Special Gas Vent (Vertical or Horizontal)*
No. of 90° Elbows | Maximum Length |
0 | 50 Ft. |
2 | 40 Ft. |
4 | 30 Ft. |
6 | 20 Ft. |
*Minimum vent length is one (1) foot, or in accordance with vent manufacturer’s instructions, and local and national codes.
Horizontal vents 3’ or less in length do not require a condensate tee, but must slope down toward the outlet at 1/4” to the foot to allow condensate to drain.
Final Installation Check:
Check that horizontal vent pipe runs slope uniformly at least 1/4” per foot to condensate drain(s). No sags, no dips, no high or low spots.
Check that vent is supported at elbows, tees, and horizon- tal and vertical runs according to manufacturer’s instruc- tions and code requirements.
Check that vent supports and wall and ceiling penetrations allow free movements up, down, and sideways without putting any strains on the heater or vent body.
Check for at least six (6) inch free air clearance between the heater vent pipe and combustible materials.
Check that all joints are completely together and sealed.
WATER CONNECTIONS
The heater requires proper water flow and pressure for its operation. See Figures 15 and 16 for the recommended installation. The filter pump discharges to the filter, the fil- ter discharges to the heater, and the heater discharges directly to the pool or spa.
Table 7: Listed Thimbles and Vent Terminals (for Special Gas Vents)
Vent Brand | Wall Thimble | Horizontal Terminal | Vertical Terminal |
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(Part of Vent term.) | 5490CI Horizontal Term. | 5400 Cap | |
(Part of Vent term.) | 5490CI Horizontal Term. | 5400 Cap | |
2SVSWTF04 | 2SVSTTF04 Tee | 2SVSRCF04 Cap | |
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15