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Water Side Heat Exchanger
These appliances MUST be installed by a properly licensed individual in the City and State in which the
unit is being installed. All start up adjustments and subsequent service work must be done by a similarly
licensed contractor or a factory trained service individual. Failure to comply could result in loss of warranty
and or severe personal injury, death and or substantial property damage.
ABH 79 - 599
Cleaning Procedure
ABH 299-599
300,000 BTU/hr
399,000 BTU/hr
630,000 BTU/hr
WARNING
ABH 79-199
80,000 BTU/hr
136,000 BTU/hr
180,000 BTU/hr
199,000 BTU/hr
V1.0
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Summary of Contents for Armstrong ABH
- Page 1 ABH 79 - 599 Water Side Heat Exchanger Cleaning Procedure ABH 79-199 ABH 299-599 80,000 BTU/hr 300,000 BTU/hr 136,000 BTU/hr 399,000 BTU/hr 180,000 BTU/hr 630,000 BTU/hr 199,000 BTU/hr WARNING These appliances MUST be installed by a properly licensed individual in the City and State in which the unit is being installed.
- Page 2 NOTE: If any of these noises are heard, the appliance should not be operated until the cause is identified and resolved. Chemical cleaning of the heat exchanger should only be done at the direction of Armstrong Hot Water, Inc. Failure to follow the prescribed cleaning procedure will result in voiding any warranty of the heat exchanger.
- Page 3 F. If, within 15-30 minutes of starting, the clean solution turns GREEN (an indication it’s cleaning power is exhausted), additional DS40 System Cleaner needs to be added. Armstrong Hot Water, Inc. recommends that chemical cleaning should be done for no longer than 4 hours, changing direction of the flow in the middle of operation. Timing will depend on the condition of the system and circulation rate.
- Page 4 13. Return heater to service. BE SURE APPLIANCE IS FILLED WITH WATER BEFORE TURNING POWER ON. Follow Start-Up Procedures covered in Part 6 of the Armstrong High Efficiency Water Heaters And Heating Boilers Installation & Operations Manual. NOTE: In the case of a completely plugged heat exchanger, chemical cleaning is almost impossible because of absence of flow. Appliance must be returned to Armstrong Hot Water, Inc.