IMPORTANT
The vent system must terminate so that proper clearances are maintained as cited in local codes or the current editions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code,
Installation of this water heater must comply with CAN/CSA B149.1
-Natural Gas and Propane Installation Code which requires the vent system components be certified to ULC S636.
Do not terminate the exhaust vent terminal over public area where condensate or vapor can cause nuisance or hazard.
Plan the vent system layout so that proper clearances are maintained from plumbing and wiring.
Vent pipes serving power vented appliances are classified by building codes as "vent connectors". Required clearances from combustible materials must be provided in accordance with information in this manual under LOCATION OF HEATER and CLEARANCES, and with National Fuel Gas Code and local Codes.
IMPORTANT
Plan the layout of the vent system backwards from the vent termination to the appliance.
WARNING
USE ONLY THE VENT TERMINALS SUPPLIED WITH THIS UNIT. TERMINATION OF A VENT SYSTEM WITH A DEVICE OTHER THAN THE SUPPLIED VENT TERMINATIONS WILL AFFECT SYSTEM PERFORMANCE AND RESULT IN A SAFETY HAZARD.
DIRECT VENTING
The intake vent terminals provided on the unit contains a mesh screen (see Figure 7) to prevent large particles from entering the unit.
NOTE: TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING
TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS
RECOMMENDED.
FOR ALL
MODELS
FIGURE 8.
IMPORTANT
WHEN LOCATING THE TERMINALS ON A SIDEWALL, THE FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE FOLLOWED.
1.The air intake terminal and the exhaust vent terminal must terminate on the same exterior wall.
2.The vertical centerline of the air intake terminal must be located at a minimum of 24" (61 cm).
3.The horizontal centerline of the air intake terminal may not be located below the horizontal centerline of the exhaust vent terminal.
FIGURE 7.
WARNING
WHEN THE UNIT IS TO BE SETUPASADIRECT VENT, THE MESH SCREEN MUST BE REMOVED. THE INLET VENT PIPE MAY THEN BE GLUED TO THE INTAKE VENT TERMINALS (see Figure 8) PROVIDED ON THE UNIT.
DIRECT VENT TERMINAL INSTALLATION
IMPORTANT
THIS UNIT CONSISTS OF TWO VENT TERMINALS - AN INTAKE VENT TERMINAL AND AN EXHAUST VENT TERMINAL. THE INTAKE VENT TERMINAL IS A 3" 45° PVC ELBOW WITH A DOME MESH WIRE SCREEN AND THE EXHAUST VENT TERMINAL IS A 3" 45°PVC ELBOW WITH A MESH WIRE SCREEN.
CAUTION
Vent terminals supplied with the heater must be used.
NOTE: BEFORE BEGINNING INSTALLATION OF ANY VENT PIPE READ THE VENT PIPE MANUFACTURER'S INSTALLATION INSTRUCTIONS.
1.After the points of termination have been determined, use the cover plates as templates to mark the holes for the vent pipes to be inserted through the wall. BEWARE OF CONCEALED WIRING AND PIPING INSIDE OF WALL.
2.If the vent terminals are being installed on the outside of a finished wall, it may be easier to mark both the inside and outside wall. Align the holes by drilling a hole through the center of the template from the inside through to the outside. The template can now be positioned on the outside wall using the drilled holes as a centering point for the template.
3.A) MASONRY SIDE WALLS
Chisel an opening approximately 1/2" (1.3 cm) larger than the marked circle.
B) WOODEN SIDE WALLS
Drill a pilot hole approximately one quarter inch outside of the marked circle. This pilot hole is used as a starting point for a
the opening. The resulting gap will be covered by the vent terminal cover
plates.) Repeat this step on the inside wall if necessary.
4.Cut a length of 3" PVC pipe about 3.5" (8.9 cm) longer than the wall thickness at the opening.
8
