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Summary of Contents for Aerco KN-COSMXTR-BCA
- Page 1 Instruction GF-125U AERCO INTERNATIONAL, Inc. Northvale, New Jersey, 07647 USA User’s Manual Esteem 399 Low NOx Gas Fired Boiler Visit www.aerco.com to View the Latest Product Manuals and Information. Printed in U.S.A. REVISED MAY 2010...
- Page 2 Telephone Support (800) 526-0288 Direct to AERCO Technical Support (8 to 5 pm EST, Monday through Friday) Please have the unit’s model number and the serial number from the rating label on the backside of the control panel when calling about service or troubleshooting. Model #_________________________ Serial #__________________________ The information contained in this document...
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Page 3: Table Of Contents
Contents—GF-125U Contents Warnings and Cautions Emergency Shutdown Prolonged Shutdown Boiler & System Water Chapter 1 Combustion Air Prevention of Contamination Potential Contaminating Products Areas likely to have these products Chapter 2 Maintenance Schedule For the Service Technician For the End User Chapter 3 Maintenance Procedures Daily Maintenance Monthly Maintenance... -
Page 4: Warnings And Cautions
Warnings and Cautions Installers and operating personnel AUTIONS MUST, at all times, observe all safety Must be observed to prevent damage or loss of operating effectiveness. regulations. OTICE The following general warnings and cautions Indicates special instructions on instal- must be given the same attention as specific lation, operation or maintenance, which precautions included in these instructions. -
Page 5: Emergency Shutdown
Emergency Shutdown CAUTION! Boiler & System Water • Have the boiler and system water chemis- DO NOT use this boiler if any part try checked at least annually by a qualified has been under water. Call a qualifi ed service technician. service technician to inspect and re- •... -
Page 6: Chapter 1 Combustion Air
Prevention of Contamination Chapter 1 Combustion Air Prevention of Contamination Potential Contaminating Products • Spray cans containing chloro/fluorocar- WARNING bons • Permanent wave solutions F THE STEEM COMBUSTION AIR INLET IS • Chlorinated wax LOCATED IN ANY AREA LIKELY TO CAUSE OR •... -
Page 7: Chapter 2 Maintenance Schedule
For the Service Technician Chapter 2 Maintenance Schedule For the Service Technician For the End User • Ongoing, as local conditions warrant. On an annual basis, or more frequently if • Check the area around the unit. conditions warrant, the following mainte- •... -
Page 8: Chapter 3 Maintenance Procedures
Daily Maintenance Chapter 3 Maintenance Procedures materials listed on page 2 of this manual. WARNING! If any of these products are in the room STEEM MUST BE INSPECTED AND from which the unit takes its combustion air, SERVICED ANNUALLY PREFERABLY AT THE they must be removed immediately or the START OF THE HEATING SEASON BY A QUALI... -
Page 9: Monthly Maintenance
Monthly Maintenance Monthly Maintenance Check Pressure Relief Valve • Visually inspect the primary pressure Check Vent Piping relief valve and the relief valve dis- • Visually inspect the flue gas vent pip- charge pipe for signs of weeping or ing for any signs of blockage, leakage leakage. -
Page 10: Every 6 Months Maintenance
Every 6 Months Maintenance • Ensure the condensate drain line is Every 6 Months Maintenance not blocked by pouring water through Check Water and Gas Piping the plug port on the condensate drain • Remove the boiler front jacket panel assembly. - Page 11 Every 6 Months Maintenance WARNING! • If water flows freely, release the lever and allow the valve to seat. Watch the O AVOID WATER DAMAGE OR SCALDING end of the relief valve discharge pipe FROM VALVE OPERATION A DISCHARGE LINE to ensure that the valve does not weep MUST BE CONNECTED TO THE RELIEF VALVE after the line has had time to drain.
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Page 12: Chapter 4 Operating Instructions
Safety Chapter 4 Operating Instructions Safety FOR YOUR SAFETY READ COMPLETE INSTRUCTIONS BEFORE PROCEEDING WARNING! F YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY A FIRE OR EXPLOSION MAY RE SULT CAUSING PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE IF YOU SMELL GAS •... -
Page 13: To Turn Off Gas To Appliance
Operation Operation STOP! Read all the safety information on the preceding page. This appliance is equipped with an ignition device which automatically lights the burner. DO NOT try to light the burner by hand. 1. Set room thermostat(s) to lowest setting. 2. -
Page 14: Standby Mode
Standby Mode Chapter 5 BOILER CONTROL DISPLAY Display Boiler function Standby Mode STANDBY, no demand for heat Fan prepurge (10 seconds) or post purge cycle StbY Ignition sequence Burner ON for space heating (CH) After the boiler is turned on, the control panel will display STANDBY mode as shown in the Burner ON for domestic water heating (DHW) figure above. -
Page 15: Setting Boiler Parameters
Setting Boiler Parameters Key: Display Setting Boiler Parameters Pressing MODE once Parameter Mode MODE To access PARAMETER mode when the system is in STANDBY mode, press the Key: Description of parameters Display MODE button once. Domestic Hot Water Setting (See Note 1) STEP To scroll through the list of parameters, sim- DHW Application Selection (See Note 2) -
Page 16: Accessing Boiler Information
Accessing Boiler Information Accessing Boiler Information OTICE The ignition counters and burner hours Information Mode are split into three two digit numbers. To switch from STANDBY mode to Example: Information mode, press MODE twice. J 12 ressin M on e ressin M t i e Write the numbers down from left to... -
Page 17: Error (Hard Lockout) Mode
Error (Hard Lockout) Mode Error (Hard Lockout) Mode If a system fault occurs while the boiler is Display Hard Lockout E 00 running, the system goes into lockout and Flame detected prior to burner startup the display starts to flash with the first digit Failed ignition after 5 attempts as an E and the next two digits represent the fault code. -
Page 18: Appendix A: Replacement Parts
Jacket Components Appendix A: Replacement Parts Jacket Components Figure 3: Jacket Components Item Description Part # Display Control Panel 38027 38028 (Left) Display Control Panel Extensions (Not Shown) 38029 (Right) 34028 Base Panel Front Jacket Panel 37051 Side Jacket Panel (Left and Right) 37052 Top Jacket Panel 37053... -
Page 19: Internal Components
Internal Components Internal Components Figure 4: Figure 4: Internal Components Item Description Part # Heat Exchanger Body 28191 Vent Outlet Adapter 38030 38031 Combustion Air Inlet Adapter Supply & Return NTC Sensor (NTC1, NTC2) 61022 61023 Flue NTC Sensor (NTC5) LWCO Pressure Device 60013 Condensate Drain Assembly... -
Page 20: Burner Components
Burner Components Burner Components Item Part # Description Combustion Chamber Insulation 83025 Burner Head with Gasket 24230 Burner Plate 36059 58026 Blower with Gasket 92078 Gas Valve Venturi Ignition Cable 63086 Igniter with Gasket 58027 Sight Glass Assembly (Glass, Gasket and Bracket) 58028 Propane Orifice - Not Shown Burner Plate Gasket - Not Shown... -
Page 21: Electronic Components
Electronic Components Electronic Components Figure 6: Figure 6: Electronic Components Item Part # Description Esteem Control Module 64061 Transformer with Surge Protection 64062 64063 Esteem Control Module Display GF-125U...
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