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Document 1427-BW
Common Venting for Brute
pg 6 of 7
2.E Installation
All units in a common vent system must be properly installed according to the Brute Installation and Operation
Manual as well as all applicable building codes.
All venting must be properly assembled per the venting manufacturer’s instructions. For Centrotherm InnoFlue,
reference the InnoFlue Installation Guide available on Centrotherm’s website:
http://www.centrotherm.us.com/Literature.aspx.
Additionally:
1. Only the materials listed in section 2.A may be used for a common vent system. Centrotherm InnoFlue
polypropylene vent material must be used on the exhaust. If PVC, CPVC, or ABS material is to be used on the
air intake, the nominal trunk diameter must match that of the nominal exhaust trunk diameter. All joints must be
properly sealed.
2. A Non-Return Valve must be properly installed on each unit in the correct orientation (vertically).
3. Both the exhaust and air intake must be directly vented to the outside of the building. Using room air for a
common vent system is not permitted.
4. All vent piping must be properly supported. Do not allow the units to support the weight of the venting.
5. Horizontal portions of the exhaust vent must be sloped at least ¼ inch per foot back toward the boiler to allow
condensate to drain out of the vent. Consult local codes for the proper disposal method for the condensate.
CAUTION
Condensate is mildy acidic (pH = 5), and may harm some oor drains and/or pipes, particularly those that are
metal. Ensure that the drain, drainpipe and anything that will come in contact with the condensate can withstand
the acidity, or neutralize the condensate before disposal.
6. Screens with mesh size no greater than ½ inch must be installed on each termination (air intake & exhaust) to
prevent debris from entering the vent system.
7. Follow all local and national codes in regards to proper vent termination clearances. Side wall exhaust
vent terminations must be at least 12 inches above the top of the air intake terminations and be horizontally
separated by at least 84 inches.
Once the vent has been installed, power on each unit in the common vent system. Conrm normal operation and
verify that there is no exhaust or condensate leakage from any connection.
SECTION 3 Maintenance
Perform all regular maintenance required by each unit as stated in the Installation and Operation Manual.
Additionally, perform the following steps at least once per year:
1. Visually inspect each Non-Return Valve to make sure that both the valve and ball check siphon are free from
debris and operating correctly. If debris is noticed inside either, remove the Non-Return Valve from the vent
system to clean. Once the valve has been cleaned, and correct operation re-established, re-assemble the
valve into the vent system.
2. Check the air intake and exhaust vent terminations and verify that they are both free from debris or any
obstructions.
3. Inspect the exhaust and air intake vents to ensure that all joints are sealed properly. If any joints need to be
resealed, completely remove any existing sealing material, clean the joint, and reassemble.
Replace the Non-Return Valve with a new one when replacing the boiler or water heater.