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The RAYPAK 009840 is an indoor stack kit designed for residential gas pool and spa heaters. It includes an inner adapter panel and a draft hood assembly that directs combustion exhaust vertically through an 8-inch stack configuration. This kit is intended for indoor installations where B-vent or vertical flue venting is required. Licensed pool heater technicians and HVAC service professionals install this component as part of proper venting setup to ensure safe exhaust removal and correct draft performance in enclosed equipment rooms.
This indoor stack kit applies to residential pool and spa heater installations where the heater is located indoors and requires a vertical flue outlet. The kit includes the stack top, draft hood, and inner adapter panel needed for a complete indoor venting assembly. It is sized for 8-inch stack applications and suited for installations in pump rooms, equipment enclosures, and indoor mechanical spaces. Compatible models include the 336A and 337A series heaters per RAYPAK documentation.
Designed for use with RAYPAK 336A and 337A residential gas pool and spa heaters in indoor installations requiring a vertical stack venting configuration.
Installation should be performed by a licensed HVAC technician or qualified pool heater service professional familiar with NFPA 54 and local gas appliance venting codes. Shut off gas supply and power to the heater before beginning any venting work. Verify that the stack and draft hood connections are fully seated and sealed per the heater manufacturer specifications before returning the unit to service. Do not operate the heater without the stack kit fully assembled and secured.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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