Harman 52i Updated Burn Pot: 1-00-574605-AMP

Harman Pellet Stove "Updated" Burn Pot for the 52i Pellet Insert.  There is an adjustable igniter cradle designed to be used with this burn pot (Sold Separately) 1-00-777907.

This is the most current revision (2019) for the Accentra 52i & 52i-TC.  This part is backward-compatible with all versions of the Harman 52i Pellet Insert dating back to 2013.

The new igniter cradle solves compatibility issues with previous burn pot designs. The original version of this burn pot includes the cradle, you need to purchase the updated cradle for this replacement version.

There are three specific periods of manufacture for the Accentra 52i.  Depending on when the unit was built, certain recommendations apply. Click on "Troubleshooting" below for more information. 

Fig.1.1 - 1-00-574605 Burnpot

Fig.1.2 - 3-20-677200 Igniter

Fig.1.3 - 1-00-777907 Adjustable Igniter Cradle

Fig.1.4/ 1.5 - 1-00-06623 Burnpot Cover with Wingscrews

Replacement For Part Numbers:

• 1-00-574605
• 1-00-574400

UPC: 652174864973

Instructional Documents:

• Install Instructions PDF for Harman 1-00-574605

To replace the burnpot:

1. Unplug your stove
2. The igniter is inside if the burnpot. From the rear of the stove, find the yellow and light blue colored wires that are coiled up and secured to the wiring harness. cut the zip ties that hold this collection of wire together. when the burn pot is removed, this is the length of wire that will pass through the stove body as the burn pot is pulled out. If the wires are not free to travel, the burnpot will only move about 4 inches.
3. Locate and remove the 4 1/2" nuts that secure the burnpot to the feeder weldment threaded rods. You may need a universal joint at the end of your socket wrench to make the connection at the top nuts.
4. Pull the burnpot assembly forward until the yellow and light blue wires are visible, then disconnect the igniter wires. Now the burn pot is free to come out of the stove
5. Remove the two 5/16" screws that hold the igniter in to the burnpot and then remove the igniter assembly
6. If you are replacing your igniter, do this now while the burnpot is free from the stove.
7. Make sure to run the wires for the igniter through the right-side opening at the rear of the burn pot
8. Replace your burnpot gasket, make sure your yellow and light blue wires are passing through the hole and through the center of the gasket.
9. Connect your igniter wires and pull the yellow and light blue wires from the back of the stove so that the disconnects pass backward through the opening. Try to take out as much slack in the igniter wires as possible so that they aren't pinch by the burnpot when it is fit into place. Note: for this part of the job, having another person around to pull the wires as you fit the burnpot in stove is key.
10. Replace your new burn pot over the threaded rods and tighten down all 4 1/2" hex nuts. You will feel the new gasket compress as you tighten the burnpot down, this is normal. DO NOT PINCH THE IGNITER WIRES WHEN DOING THIS PART
11. Replace the clean out cover and secure your wires in the rear of the stove.

-Problems with early Accentra52i burn pot designs include an overfiring condition that warps the flame guide and medallion. It may also burn a hotspot (gray etching) into the center of the door glass.

Based on the changes that have been made, there are three specific periods of manufacture for the Accentra 52i. Depending on when the unit was built, the following recommendations apply:

• Units built from the Launch of the Accentra52i [S/N 008254751] → 11/26/13 [S/N 008257173]: We recommend the combustion cover on all of these units is replaced with part, 1-10-574087A to prevent any issues with incorrect placement. We suggest that all combustion covers are proactively replaced on units manufactured in this time period to prevent any future issues. Additionally, if any ignition issues persist, we recommend replacing the burnpot with the new style P/N 1-00-574400 (part now obsolete, new part #,1-00-574605)

• Units built from 11/26/13 [S/N 008257173] → 1/7/14 [S/N 008257557]: The likelihood of these units igniting properly is high, but in the unlikely circumstance that a unit manufactured in this period has long ignition issues, we recommend replacement of the burnpot with the new style burnpot, P/N 1-00-574400.(part now obsolete, replace with this part, 1-00-574605).

• Units built from 1/7/14 [S/N 008257557] → 7/1/17: There should not be any issues with units built in this time period. - End of Accentra52i Production.

• Accentra52i-TC Introduced 7/1/17 → Current: This model underwent a full redesign to incorporate the "Easy-Touch" control system which included a burnpot revision of part 1-00-574400(obsolete), the new part number introduced, 1-00-574605. This burn pot is reverse-compatible with all prior versions of the 52i as a retrofit kit. It features an improved air-flow design to work with the newer-style combustion motors and still comply with 2020 EPA certifications. The igniter cradle, #3 in Fig.1, part 1-00-777907 is now adjustable within the burnpot so the ignition can always seat flush, compensating for any variances that may have occurred in manufacturing or over firing during use. Both could lead to long or faulty ignitions. 

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