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10. With the coils to the heat exchanger now accessible, clean the coils with a non-steel brush
(preferably nylon). Vacuum out any large debris that is "knocked loose". ANY CLEANING OF
THE COILS WITH ACID OR ALKALI PRODUCTS IS PROHIBITED. However, Patterson-
Kelley recommends using a white vinegar solution to assist with the cleaning of the coils. BE
SURE NOT TO GET EITHER THE DOOR REFRACTORY, OR THE INNER EXCHANGER
REFRACTORY, WET.
11. Once the coils have been cleaned, rinse the coils with clean water. BE SURE NOT TO GET
EITHER THE DOOR REFRACTORY, OR THE INNER EXCHANGER REFRACTORY, WET.
12.
Use a pressurized water hose with control nozzle. Begin by spraying just a few seconds of
water into the combustion chamber and then close off the nozzle.
13.
Walk around to the rear of the boiler and ensure the wash water is draining into the temporary
drain hose off the condensate drain. Adjust the temporary drain hose if needed to help drain the
wash water from the boiler.
14. After inspecting the temporary drain hose, continue washing the internal combustion chamber
with pressurized water for several minutes. Spray as much of the internal surface area as
possible.
Be very careful when cleaning to avoid spraying any of the electrical or control components. Water
may cause a short circuit and damage circuitry.
Revised: December 8, 2021
Released: December 8, 2021
Patterson-Kelley 2021
All Rights Reserved.
TM
P-K Storm
Gas Fired Boiler
Technical Service 1.877.728.5351
2691000273 P-K Storm ST2500-ST6000
Installation and Owners Manual Rev C.docx
Page 70
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