ACV Marquis TWH200LP Installation Manual

ACV Marquis TWH200LP Installation Manual Manual pdf 16 page image

Vent / Combustion Air Installation13Venting InstallationThe water heater uses 3˝ or 2˝ diameter exhaust and 3˝or 2˝ diameter intake air ducts. To ensure the draw of airdirectly from and exhaust of air directly to the outside ofthe building, create an airtight seal from the water heatercollar to the vent termination.Intake materials can be made of PVC, CPVC, PP.For installation in Canada, field-supplied plastic vent pip-ing must comply with CAN/CGA B149.1 (latest edition)and be certified by the Standard For Type BH GasVenting Systems, ULC-S636. Components of this listedsystem must not be interchanged with other vent sys-tems or unlisted pipes or fittings. All plastic componentsand specified primers and glues of the certified vent sys-tem must be from a single system manufacturer andmust not be intermixed with another system manufactur-er’s parts.Recommended Vent Material:PVC Schedule 40 / Type BH Special Gas Vent Class IIA(PVC) / Type BH Special Gas Vent Class IIB (CPVC)This water heater has a built-in control to limit theexhaust temperature to 149°F (65°C).The following type of non-metallic vent can be used- PVC (schedule 40, ASTM-D1785)- CPVC (schedule 40, ASTM-D2846)- PP (ULC-S636)- Use of cellular core PVC (ASTM F891), cellular coreCPVC, or Radel (polyphenolsulfone) in venting sys-tems shall be prohibited.- Covering non-metallic vent pipe and fittings withthermal insulation is prohibited.Vent Pipe & Combustion Air Pipe AdaptersCanada has adopted standard ULC S636 which requiresthe following additional items.The following steps for cement application are highlighted:- Clean and dry your selected PVC, CPVC,PP ventpipe and Water Heater adapter.- Select the size of vent pipe(2˝ & 3˝), according tothe installation requirements.- Push the pipe into the adapter until it touches thebottom of the fitting.- 3inch pipe connecting- 2 inch pipe connecting- Tighten the clamps using a screwdriver.Category IV Venting1. Insert the termination end cap into the intake air ductas shown below.2. Provide two openings to allow for circulation of com-bustion air as specified by ANSI Z223.1/NFPA 54 orCAN/CGA B-149.1: