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2.3.3 Return & Supply Air POP Rotation Procedure
For KUN model heaters the return air POP can ONLY be changed from the front side to back side. The supply air
POP can be changed from front to back or end of heater (refer to Diagram 3 page 12).
2.3.3.1 All KUN3, KUN4 & KUN5 Models Return Air POP Rotation Procedure
1. Remove screws securing the lid and remove the lid.
2. Remove the screws securing the POP panel, blanking panel, and remove panels.
3. Swap panels to opposite sides and fasten with the same screws.
4. Secure lid with original screws.
2.3.3.2 KUN315, KUN320 & KUN325 Supply Air POP Rotation Procedure
1. Remove the screws securing the outer POP plate and remove outer POP plate.
2. Remove the screws securing the nominated outer POP blanking plate and remove outer POP blanking plate.
3. Remove the screws securing the inner POP blanking plate and remove inner POP blanking plate.
4. Relocate and secure inner POP blanking plate in new location.
5. Relocate and secure outer POP plate and outer POP blanking plate in their new locations.
6. The pressure switch and mounting bracket will need to be swapped to the POP panel that is being exchanged.
2.3.3.3 KUN415, KUN420, KUN425, KUN430, KUN330 Supply Air POP Rotation Procedure
1. Remove screws securing the lid and remove the lid.
2. Remove the screws securing the POP panel, blanking panel, and remove panels.
3. Remove gas feed tube plate and secure to alternate panel.
4. Swap panels to nominated sides and fasten with the same screws.
5. Secure lid with original screws.
6. For the KUN330 ONLY the pressure switch and mounting bracket will need to be swapped to the POP panel
that is being exchanged.
2.3.3.4 KUN521 Supply Air POP Rotation Procedure
1. Remove the screws securing the outer POP plate and remove outer POP plate.
2. Remove the insulation that is beneath the outer POP plate.
3. Remove the screws securing the nominated outer POP blanking plate and remove outer POP blanking plate.
4. Remove the screws securing the inner POP blanking plate and remove inner POP blanking plate.
5. Relocate and secure inner POP blanking plate in new location.
6. Insert the outer POP insulation in new location.
7. Relocate and secure outer POP plate and outer POP blanking plate in their new locations.
2.3.3.5 KUN530 Supply Air POP Rotation Procedure
1. Remove screws securing the lid and remove the lid.
2. Remove the screws securing the POP panel, blanking panel, and remove panels.
3. Remove POP and blanking panel insulation.
4. Remove POP blanking panel and fasten in new location.
5. Insert POP and blanking insulation into their new locations.
6. Swap panels to nominated sides and fasten with the same screws.
7. Secure lid with original screws.
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