- For best results always minimize the length of the vent system. Keep the vent pipe routing as short and straight as possible.
- The water heater vent must not be combined with the vent from any other gas appliance or vent stack.
- The water heater vent must not be connected to a chimney.
- You must use vent components that are certified for use with this water heater as indicated within this manual. Do not combine components from multiple manufacturers.
- Air intake pipe may be ABS, PVC, galvanized steel, corrugated aluminum or other materials acceptable to local codes.
- The heater requires a direct vent terminating directly to the outside of the building.
- The exhaust vent will have been tested to meet Underwriters Laboratories, Inc. to UL1738 and ULC-S636.
- The system must use outside air for combustion. Ensure the incoming air is not contaminated by any potential source of fumes or chemicals.
- Avoid any dips or sags in horizontal pipe runs.
- Ensure vent piping is supported every four (4) feet (horizontal runs) or six (6) feet (vertical runs) or in accordance with local code requirements.
- Do not reduce the diameter of the vent piping.
- Ensure all vent connections are installed, properly connected, and sealed air tight per manufacturer's instructions.
- Any vent pipe seams should be installed so they are oriented on the top of Horizontal Pipe Runs.
- Slope exhaust piping towards the exhaust terminal with a 2% slope (1/4 inch per foot; 19 mm/ m) to ensure rain or any accumulating condensate near termination are drained.
- A condensate collector is required for this system when there is a vertical vent configuration. A condensate collection point should be installed on the vertical run
of piping just prior to the heater to ensure proper condensate drainage. Check with local codes for proper disposition and handling of condensate water, an air gaped
drain is usually required and in some cases a condensate neutralization system is also required.
- Do not store hazardous or combustible materials near the vent piping
- Ensure the air intake and vent termination points are at least 12” (300 mm) above any possible snow accumulation level. The flows must not be impeded by snow or debris.
- Ensure the air intake and vent termination points are at least 24” (600 mm) from any obstruction or other objects.
The exhaust pipe must maintain adequate clearances and be insulated with a fireproof material if it passes through walls made of flammable materials. Consult local codes and vent pipe manufacture documentation for proper material selection and installation requirements.
If the heater will be installed in a building that has a system that maintains a negative pressure, it is possible for a back-draft to allow outside air to be pulled into the heater while not in operation. This can create a situation where freezing might occur within the heater.
Please consult a professional for a properly designed venting solution or contact qualified technician for guidance.
AIR INTAKE PIPE ASSEMBLY
1. Drill 2 small holes at the end of the air intake pipe.
2. Slide the pipe over the air intake terminal.
3. Using a level, ensure the pipe is straight up and down.
4. With self tapping screws, attach the pipe to the air intake terminal.
5. Apply a bead of silicone around the pipe and air intake terminal, ensuring an air tight connection.
EXHAUST VENT PIPE ASSEMBLY
1. Use manufactures universal Adapter to connect the vent pipe to the unit.
2. Then follow the Manufactures vent pipe assembly guidelines and standard vent
pipe location selection diagram below.
Please consult latest version of these standards to ensure installation is in compliance with current guidelines.
* For clearances not specified in ANS Z223.1/NFPA54 or CSAB149.1, clearances are in accordance with local installation codes and the requirements of the gas supplier.
** A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
*** Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
Maximum Vent length
1. Determine the number of 90 degree elbows in the vent system (Two 45 degree elbows count as one 90 degree elbow).
2. Refer to below table to find the maximum vent length based on the number of elbows
Example: If you have one elbow, then your maximum vent length is 35ft (10.7m)
The air intake requires a return bend or tow 90º elbows to prevent entry of rain.
The vent termination and air intake must be in the same pressure zone.