5.The vent termination for a
6.The vent termination shall be located at least 4 ft. horizontally from any electric meter, gas meter, regulator and any relief equipment. These distances apply ONLY to U.S. installations. In Canada, the Canadian Fuel Gas Code takes precedence.
7.Avoid areas where condensate drainage may cause problems by dropping on plant- ers or patios, etc. Also ensure that exhaust gases will not impinge on windows or build- ing surfaces, which may be compromised or damaged by condensation. Do not install the vent terminal such that exhaust is di- rected into window wells, stairwells, under decks or into alcoves or similar recessed areas, and do not terminate above any public walkways.
8.Select the point of wall penetration where the minimum 1/4 inch per foot of slope up can be maintained.
!CAUTION:
For optimum performance, vent fur- nace through wall which experiences the least exposure to winter winds.
Horizontal Venting
Vent and combustion air intake terminations must be as shown in Figure 19.
!WARNING:
Ensure that the combustion air vent and the exhaust vent are configured as shown in Figure 19. Improper vent termination can cause recirculation of the flue gases. This may result in fur- nace vibration. In severe cases, the furnace will cycle due to the intermit- tent contact between the flame and the flame sensor. If you note oscillations occurring, check the vent configura- tion. Make sure that the exhaust vent does not have a 90 degree termination.
Vent Configuration to |
| ||
Provide 12" Minimum |
| ||
height above |
|
| |
Snow Level. | 12" Min. |
| |
|
| ||
| 19" Max. |
| |
Outside | Support | 12" Above | |
Wall |
| ||
| Normally | ||
|
| ||
Pipe |
| Expected | |
1/2" | Snow | ||
Coupling | Level | ||
Armaflex | |||
|
| ||
| Insulation or |
| |
| Equivalent |
| |
Figure 18. Alternate Horizontal Vent
Installation
For horizontal venting, one of the following kits is recommended:
| 2" PVC | 3" PVC | |
9023730 | 9023750 | ||
Exterior Vent | |||
Mounting Kit |
|
| |
Neutralizer Kit - All | 9023730 | 9023730 | |
Models | |||
|
|
For Canadian installations please refer to the Canadian Installation Code
The kit consists of two face plates and an insulating gasket to seal the exterior surface. A hole sized closely to the pipe diameter must first be cut through the wall. A short length of pipe is then cut such that it can penetrate the wall and be held in place by closely fitting standard cou- plings. The face plates are retained on both sides of the wall by the couplings, and the gasket is retained against the wall by the outer face plate. Face plates must be fastened to the wall and the outside one must be flashed as appro- priate to prevent entry of water.
When the above kits are not used the following steps are required:
1.Check the hole size cut through the exterior wall. Insure that the hole diameter is less than the diameter of the couplings to be used.
2.Extend the vent pipe through the wall ap- proximately 1" and seal the area between the wall and pipe.
19