Centrotherm isaal0303-12 Pvc to Pp Appliance Adapter 3 in

Product Description

The CENTROTHERM isaal0303-12 is a single-wall, long-pattern appliance adapter engineered to transition a PVC flue collar connection to a polypropylene (PP) vent system. It is part of the InnoFlue venting product line and is designed for use on residential and light-commercial gas appliances — including furnaces, water heaters, and boilers — where the appliance flue collar is sized for PVC but the installed vent system uses polypropylene components. The adapter connects at the appliance boiler connection point and integrates directly into InnoFlue PP vent system components. It is installed by licensed HVAC technicians and plumbers performing vent system connections on high-efficiency combustion appliances.

This adapter is intended for appliances that require a PVC-to-polypropylene transition at the flue collar. Approved applications include specific makes and models of furnaces, water heaters, and boilers whose manufacturers have authorized the use of this adapter. Consult the Centrotherm OEM manual for the specific appliance to confirm which appliance adapter part number is required before installation. The 3-inch diameter fits flue collar and vent pipe sized at 3 inches.

Key Features

• Transitions a PVC appliance flue collar to an InnoFlue polypropylene vent system without glue or primer
• Evaluated to UL1738 and ULC S636 by ICC for certified performance
• Approved for use on specific furnaces, water heaters, and boilers per appliance manufacturer authorization
• Single-wall, long-pattern construction for direct boiler connection fitment
• Installs quickly without adhesives, reducing labor time on the connection

Compatibility

Approved for use on specific makes and models of furnaces, water heaters, and boilers that require a PVC flue collar to polypropylene vent system transition. Consult the Centrotherm OEM manual for the intended appliance to confirm this adapter is the correct specified part for that application.

Installation Notes

Installation must be performed by a qualified HVAC technician or licensed plumber in accordance with the appliance manufacturer installation and operation manual and applicable local mechanical codes. Shut down the appliance and allow the vent system to cool before beginning any connection work. This adapter requires no glue or primer — do not apply PVC solvent cement or primer to the polypropylene connection surfaces. Always verify the correct adapter part number against the appliance OEM manual before installation.

Technical Specifications

• Pipe Diameter: 3 inches
• Wall Type: Single Wall
• Pattern: Long
• Inlet Material: PVC
• Outlet Material: Polypropylene (PP)
• Certifications: Evaluated to UL1738 and ULC S636 by ICC

Standard Information

• Brand: CENTROTHERM
• Manufacturer Part Number: isaal0303-12