Toyotomi Direct-Vent Flue Pipe Installation Kit

The Toyotomi Flue Pipe Installation Kit (Part #20476440) is the standard venting kit for the Toyotomi OM-122DW and OM-128HH oil-fired water heaters. This direct/forced flue system uses outside air for combustion, creating a sealed and balanced system that maximizes fuel efficiency and prevents indoor air loss.

By drawing combustion air from outdoors, this kit maintains stable burner performance in tightly sealed homes and reduces drafts compared to chimney-based installations. It provides the highest efficiency configuration and is the most commonly used venting option for Toyotomi water heaters.

The kit includes the inner and outer flue assemblies, flexible exhaust components, intake hose, insulating cloth cover, flanges, gaskets, bands, and all necessary hardware for a safe and code-compliant through-the-wall installation. For thicker walls, use the Extension Flue Pipe (Part #20476486). When longer or offset venting runs are needed, add Extension Pipe Sets (Part #20476491) or #20476496, following Toyotomi’s limits of ≤ 10 ft total vent length and ≤ 3 bends.

• Factory-standard vent kit for Toyotomi OM-122DW and OM-128HH water heaters
• Uses outside air for combustion, providing maximum fuel efficiency and balanced indoor air pressure
• Most commonly used installation kit — ideal for new installations and high-efficiency setups
• Complete through-the-wall direct/forced flue venting solution
• Includes inner and outer flue pipes, flexible exhaust pipe, and flexible bent joint
• Supplied with intake hose, insulating cloth cover, flanges, gaskets, bands, and mounting hardware
• Designed for sealed combustion and safe exhaust discharge
• Supports standard wall thickness; use Extension Flue Pipe #20476486 for thicker walls
• Compatible with Extension Pipe Sets #20476491 and #20476496 for longer or offset vent runs
• Meets Toyotomi installation standards — total vent length ≤ 10 ft with ≤ 3 bends
• Note: This kit draws outside air for combustion; the alternate Chimney Adapter Kit uses inside air and may reduce efficiency

Always follow the heater manufacturer’s installation manual and venting requirements when installing direct-vent flue systems.