HTP EFT-55 Installation & Maintenance Manual

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User's information manual (8 pages)

Installation, start-up, maintenance, parts, warranty (76 pages)

Installation, start-up, maintenance, parts, warranty (74 pages)

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Page 1 Perform steps in the order given. Failure to comply could result in substantial property damage, severe personal injury, or death. NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature.
Page 2 IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER BOILER. WHAT TO DO IF YOU SMELL GAS ...
Page 3: For The Installer
In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmental official may be the AHJ. NOTE: HTP, Inc. reserves the right to modify product technical specifications and components without prior notice. FOR THE INSTALLER This manual must only be used by a qualified heating installer/service technician.
Page 4 COVERED BY WARRANTY. NOTICE In accordance with Section 325 (f) (3) of the Energy Policy and Conservation Act, HTP, Inc. has provided this boiler with multiple features designed to save energy by reducing the boiler water temperature as heating load decreases.
Page 5: Table Of Contents
TABLE OF CONTENTS PART 1 – GENERAL SAFETY INFORMATION .......................... 8 A. PRECAUTIONS ..................................8 B. IMPROPER COMBUSTION ............................... 8 C. GAS ......................................8 D. WHEN SERVICING THE BOILER.............................. 8 E. BOILER SYSTEM ..................................8 F. BOILER WATER CHEMISTRY ..............................9 G.
Page 6 L. GLYCOL ANTIFREEZE SOLUTIONS ............................33 M. ZONING WITH ZONE VALVES ............................... 33 N. ZONING WITH CIRCULATORS ............................... 33 O. MULTIPLE BOILERS ................................33 PART 6 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL ................34 A. GENERAL ....................................34 B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE ..................35 C.
Page 7 B. COMBUSTION CHAMBER COIL CLEANING INSTRUCTIONS FOR BOILER ............... 79 C. CLEANING WATER SIDE OF HEAT EXCHANGER ........................ 79 D. MAINTAINING THE CONDENSATE SYSTEM ........................80 BOILER START-UP REPORT ..............................86 MAINTENANCE REPORT ................................. 86 MAINTENANCE NOTES ....................................... 90 HTP CUSTOMER INSTALLATION RECORD FORM ............................91 LP-387 REV. 12.15.14...
Page 8: Part 1 - General Safety Information
Due to the low water content of the boiler, improper sizing of the boiler with regard to heating system load will result in excessive cycling and accelerated component failure. HTP DOES NOT warrant failures caused by improperly sized boiler applications. DO NOT oversize the boiler to the system.
Page 9: Boiler Water Chemistry
Consider boiler piping and installation when determining boiler location. NOTE: Damages resulting from incorrect installation or from use of products not approved by HTP, Inc. ARE NOT covered by warranty. PART 2 – BEFORE YOU START A.
Page 10: How Boiler Operates
 Installation Manual  Warranty  CSD-1 Form  H-2 Data Sheet  NAT to LP Conversion Kit (Included with NAT models) B. HOW BOILER OPERATES ® ELITE FT condensing technology intelligently delivers hydronic heating while maximizing efficiency. Outlined below are the features of the system and how they operate: Stainless Steel Heat Exchanger - The highly efficient stainless steel heat exchanger is designed to extract all available heat from the supply line before it is exhausted.
Page 11: Optional Equipment
The Vision II also controls the output temperature of the boiler to assure accurate temperature delivery to all connected zones. C. OPTIONAL EQUIPMENT Below is a list of optional equipment available from HTP. These additional options may be purchased through your HTP distributor:  System Sensor (Part # 7250P-324) ...
Page 12: Leveling
This boiler is certified for indoor installations only. Do not install the boiler outdoors. Failure to install this boiler indoors could result in substantial property damage, severe personal injury, or death. 2. Check for nearby connections to:  System water piping ...
Page 13 Figure 1 – Required Clearances Space must be provided with combustion/ventilation air openings correctly sized for all other boilers located in the same space as the boiler. The boiler cover must be securely fastened to prevent it from drawing air from the mechanical room. This is particularly important if the boiler is in a room with other boilers.
Page 14 SPECIFICATIONS AND DIMENSIONS Figure 2 – LP-387-K LP-387 REV. 12.15.14...
Page 15: Residential Garage, Closet, And Alcove Installations
D. RESIDENTIAL GARAGE, CLOSET, AND ALCOVE INSTALLATIONS Check with your local Authority Having Jurisdiction for requirements when installing boiler in a garage, closet, or alcove. Please read the entire manual before attempting installation. Failure to properly take factors such as boiler venting, piping, condensate removal, and wiring into account before installation could result in wasted time, money, and possible property damage and personal injury.
Page 16: Prevent Combustion Air Contamination
appliance is installed in areas where indoor air is contaminated (see Table 2) it is imperative that the appliance be installed as direct vent so that all combustion air is taken directly from the outdoors into the appliance intake connection. Unconfined space is space with volume greater than 50 cubic feet per 1,000 Btu/hour (4.8 cubic meters per kW) of the total input rating of all fuel-burning appliances installed in that space.
Page 17: Removing An Boiler From A Common Vent System
NOTE: DAMAGE TO THE BOILER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY WARRANTY. (Refer to the limited warranty for complete terms and conditions). G. REMOVING AN BOILER FROM A COMMON VENT SYSTEM Do not install the boiler into a common vent with any other boiler. This will cause flue gas spillage or boiler malfunction, resulting in possible substantial property damage, severe personal injury, or death.
Page 18: Wall Mounting Considerations
Ensure the wall that the boiler is intended to be mounted on is comprised of cement, brick, block, or wooden studs spaced 16” apart from center. Ensure the wall is capable of supporting at least 250 lbs (115 kg) for EFT-55 – 110 models, 300 lbs (136 kg) for EFT-155 –...
Page 19: Mounting To A Metal Frame
The provided mounting bracket must be mounted to the center of at least 2 studs using standard steel or stainless steel toggle bolts 3/16” diameter or larger, and at least 2” long for direct mounting on stud for EFT-55 – 110 models, and 3/8” diameter or larger, and at least 2”...
Page 20: General Piping Information
Plumbing of this product should only be done by a qualified, licensed plumber in accordance with all local plumbing codes. The boiler may be connected to a storage tank to supply domestic hot water. HTP offers 60/80/119/175 gallon size storage tanks in either stainless steel or glass-lined construction.
Page 21: Backflow Preventer
Expansion tanks must be sized according to total system volume. This includes all length of pipe, all fixtures, boilers, etc. Failure to properly size system expansion could result in wasted time, money, and possible property damage, personal injury, or death. ADDED VOLUME TO SYSTEM BY ELITE FT BOILER MODEL GALLONS EFT-55 / EFT-80 EFT-110 EFT-155 EFT-199 EFT-285...
Page 22: Hydronic Piping With Circulators, Zone Valves, And Multiple Boilers
On a boiler installed above radiation level, some states and local codes require a low water cut off device, which is an optional part available through HTP (Part # 7600P-104 for EFT-55 – 110 models, 7600P-990 for EFT-155 – 399 models). Check with local codes for additional requirements.
Page 23 Figure 7 – Near Boiler Piping* – NOTE: This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. *Top / Bottom Supply / Return Connections available on EFT-155, EFT-199, EFT-285, and EFT-399 Models ONLY NOTE: In piping applications utilizing a single zone, it is recommended that the installer use flow / check valves with weighted seats at or near the boiler to prevent gravity circulation.
Page 24 Figure 8 – Piping Symbol Legend LP-387 REV. 12.15.14...
Page 25 4. The minimum pipe size for connecting a SuperStor indirect water heater is 1” 5. The minimum pipe size for connecting an EFT-55 or 80 - 1”. 6. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with circulator flanges as an alternative.
Page 26 4. The minimum pipe size for connecting a SuperStor indirect water heater is 1” 5. The minimum pipe size for connecting an EFT-55 or 80 - 1”. 6. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with circulator flanges as an alternative.
Page 27 4. The minimum pipe size for connecting a SuperStor indirect water heater is 1” 5. The minimum pipe size for connecting an EFT-55/80/110 - 1”, EFT-155/199/285 – 1.25”, EFT-399 – 1.5”. 6. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with circulator flanges as an alternative.
Page 28 4. The minimum pipe size for connecting a SuperStor indirect water heater is 1” 5. The minimum pipe size for connecting an EFT-55/80/110 - 1”, EFT-155/199/285 – 1.25”, EFT-399 – 1.5”. 6. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with circulator flanges as an alternative.
Page 29 4. The minimum pipe size for connecting a SuperStor indirect water heater is 1” 5. The minimum pipe size for connecting an EFT-55/80/110 - 1”, EFT-155/199/285 – 1.25”, EFT-399 – 1.5”. 6. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used with circulator flanges as an alternative.
Page 30: Piping Installation
H. PIPING INSTALLATION This boiler should not be operated as a potable hot water heater. It should not be used as a direct hot water heating device. Basic steps are listed below that will guide you through the installation of the boiler. 1.
Page 31: Check/Control Water Chemistry
To size, simply add up the number of boilers and the required flow rates for the system design temperature. Example: (5) EFT-55 boilers with a design of 20°Δt degree temperature rise with each boiler having an individual flow rate of 5.3 GPM.
Page 32: Fill And Purge Heating System
Pressure relief valve: Factory supplied on Boiler. The pressure relief valve is sized to ASME specifications. Storage tank may require additional relief valves depending on local codes. MINIMUM PIPE SIZES 1” NPT or Copper EFT-55, EFT-80, EFT-110 1 ¼” NPT or Copper EFT-155, EFT-199, EFT-285 1 ½” NPT or Copper...
Page 33: Glycol Antifreeze Solutions
For installations that incorporate standing iron radiation and systems with manual vents at the high points, follow the previous section and, starting with the nearest manual air vent, open the vent until water flows out. Then close the vent. Repeat the procedure, working your way toward the furthest air vent.
Page 34: Part 6 - Venting, Combustion Air, And Condensate Removal
PART 6 – VENTING, COMBUSTION AIR, AND CONDENSATE REMOVAL The boiler must be vented as detailed in this Venting Section. Ensure exhaust vent and intake piping complies with these instructions regarding vent system. Inspect finished exhaust vent and intake piping thoroughly to ensure all joints are well secured, airtight, and comply with all applicable code requirements, as well as with the instructions provided in this manual.
Page 35: Approved Materials For Exhaust Vent And Intake Pipe
When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the boiler vent connection, and at the termination when using an HTP PVC termination kit. DO NOT mix AL-29-4C piping from different manufacturers unless using adapters specifically designed for the purpose by the manufacturer.
Page 36: Exhaust Vent And Intake Pipe Location
Cellular foam core piping may be used on air inlet piping only. You must not use “B” vent in an exhaust application. “B” vent is for intake applications ONLY. Using “B” vent in an exhaust application will result in serious injury or death. D.
Page 37 NOTE: Due to potential moisture build-up, sidewall venting may not be the preferred venting option. Carefully consider venting installation and location to save time and cost. You must insert the provided exhaust and intake screens at your vent termination to prevent blockage caused by debris or birds. The building owner is responsible for keeping the exhaust and intake terminations free of snow, ice, or other potential blockages, as well as scheduling routine maintenance.
Page 38 Condensate from the boiler is slightly acidic with a pH of 3.2 - 4.5. To avoid long term damage to the drainage system and to meet local code requirements, HTP recommends neutralizing the condensate with a Condensate Neutralizer Kit (Part # 7450P-212). The neutralizer kit connects to the drain system and contains limestone chips that neutralize the pH level of the water vapor.
Page 39 Figure 16 - Condensate Piping Suggestions NOTES: 1. Condensate line must be pitched at least 1/4" per foot to properly drain. If this cannot be done, or a very long length of condensate hose is used, you must increase the condensate line to a minimum of 1” ID and place a tee in the line after the condensate neutralizer to properly reduce vacuum lock in the drain line.
Page 40: Exhaust Vent And Intake Pipe Sizing
E. EXHAUST VENT AND INTAKE PIPE SIZING 1. The exhaust vent and intake pipes are 3” for EFT-55/80/110/155/199/285 models, and 4” for the EFT-399. 2. The total equivalent length of exhaust vent and intake pipe should not exceed 200 feet for all models EXCEPT the EFT-285. Total equivalent length for the EFT-285 should not exceed 150 feet.
Page 41: Longer Vent Runs
b. For example: If the 3” exhaust vent has two short 90 elbows and 10 feet of PVC pipe we will calculate: Exhaust Vent Equivalent Length = (2x5) + 10 = 20 feet. Further, if the 3” intake pipe has two short 90 elbows, one 45 elbow, and 10 feet of PVC pipe, the following calculation applies: Intake Pipe...
Page 42: Venting Drawings
14. A screened straight coupling is provided with the boiler for use as an outside exhaust termination. 15. A screened inlet air tee is provided with the boiler to be used as an outside intake termination. The following information on Table 13 lists optional exhaust/intake terminations available from HTP: DESCRIPTION STOCK CODE 3”...
Page 43 Figure 19 – Two Pipe Roof and Sidewall Venting with Tee (Intake) and Coupling (Exhaust) NOTE: Drawing is meant to demonstrate system venting ONLY. The installer is responsible for all equipment and detailing required by local codes. All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate.
Page 44 Figure 20 – Venting with Optional Kits (NOT INCLUDED WITH THE BOILER) NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for all equipment and detailing required by local codes. All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate.
Page 45 Figure 21 – Unbalanced Flue/Vertical Vent - NOTE: Drawing is meant to demonstrate system venting ONLY. All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the boiler to allow drainage of condensate.
Page 46: Venting Through An Existing System
Figure 22 – Horizontal Venting - NOTE: Drawing is meant to demonstrate system venting ONLY. NOTES: A. For every 1” of overhang, the exhaust vent must be located 1” vertical below overhang (overhang means top of building structure and not two adjacent walls [corner of building]).
Page 47 CONCENTRIC VENTING THROUGH AN EXISTING SYSTEM NOTE: The following instructions refer only to venting through an existing vent system, and not to venting with HTP’s optional concentric vent kits. Refer to Concentric Vent Kit installation manual (LP-166) for further information on venting with the optional concentric vent kits.
Page 48: Indoor Combustion Air Installation In Confined Or Unconfined Space
3. INDOOR COMBUSTION AIR INSTALLATION IN CONFINED OR UNCONFINED SPACE This boiler requires fresh, uncontaminated air for safe operation and must be installed in a mechanical room where there is adequate combustion and ventilating air. NOTE: To prevent combustion air contamination, see Table 2. Combustion air from the indoor space can be used if the space has adequate area or when air is provided through a duct or louver to supply sufficient combustion air based on the boiler input.
Page 49 Figure 25 – 1, 25 - 2 NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for all equipment and detailing required by local codes. LP-387 REV. 12.15.14...
Page 50: Part 7 - Gas Piping
PART 7 – GAS PIPING FAILURE TO FOLLOW ALL PRECAUTIONS IN THIS SECTION COULD RESULT IN FIRE, EXPLOSION, OR DEATH! A. GAS CONNECTION The gas supply shall have a maximum inlet pressure of less than 14" w.c. (3.5 kPa), and a minimum of 3.5" w.c. (.87 kPa). The entire piping system, gas meter and regulator must be sized properly to prevent pressure drop greater than 0.5"...
Page 51: Check Inlet Gas Pressure
4. It is important to support gas piping as the boiler is not designed to structurally support a large amount of weight. 5. Purge all gas lines thoroughly to avoid start up issues with air in the lines. 6. Sealing compound (pipe dope) must be used and approved for gas connections. Apply sparingly, and only to the male threads. Care must be taken when applying compound to prevent blockage or obstruction of gas flow which may affect the operation of the boiler.
Page 52: Boiler Gas Valve
Figure 27 – Gas Valve Detail Do not do a gas conversion on this boiler without an officially approved conversion kit and instructions supplied by HTP. Failure to use a conversion kit when converting the boiler to fire on Natural or LP gas will result in extremely dangerous burner operation, leading to fire, explosion, severe injury or death.
Page 53: Part 8 - Field Wiring
Strain on the gas valve and fittings may result in vibration, premature component failure and gas leakage, and result in fire, explosion, property damage, severe personal injury, or death. Adjustments to the throttle screw or offset may only be made by a qualified gas technician using a calibrated combustion analyzer capable of measuring CO and CO.
Page 54: Line Voltage Wiring For Standard Boiler
D. LINE VOLTAGE WIRING FOR STANDARD BOILER NOTE: A termination plug is included in the CAT 3 / CAT 5 Bus Connection Point, labeled J3 in Figure 29. DO NOT REMOVE THIS PLUG! Doing so will affect boiler operation and void warranty. 1.
Page 55: Outdoor Sensor
There is no connection required if an indirect water heater is not used in the installation. 1. The boiler will operate an indirect fired water heater with either a thermostat type aquastat installed in the indirect tank or an HTP 7250P-325 tank sensor.
Page 56: Optional Ul353 Low Water Cut-Off Interface Kit
Avoid running communication cables parallel and close to or against high voltage (120 volt or greater) wiring. HTP recommends that the maximum length of communication bus cables not exceed 200 feet. 4. Route the communication cables through one of the knockouts in the cabinet.
Page 57: Cascade Master Pump And Sensor Wiring
Figure 31 – Cascade Resistor Plug Installation Detail M. CASCADE MASTER PUMP AND SENSOR WIRING 1. Connect the system pump hot wire to the terminal marked 8. 2. Connect the system pump neutral to the 2 terminal and the pump ground wire to the 3 terminal. 3.
Page 58 Figure 32 – Cascade Master and Follower Wiring LP-387 REV. 12.15.14...
Page 59 Figure 33 – Internal Connection Diagram – LP-293-J LP-387 REV. 12.15.14...
Page 60: Part 9 - Start-Up Preparation
PART 9 – START-UP PREPARATION Thoroughly clean and flush any system that has used glycol before installing the boiler. Provide the customer with a material safety data sheet (MSDS) on the fluid used. A. CHECK / CONTROL WATER CHEMISTRY Chemical imbalance of your water can cause severe damage to your boiler and associated equipment, and may also affect efficiency. You may have to have your water quality professionally analyzed to determine whether you need to install a water softener.
Page 61: Check For Gas Leaks
2. Freeze protection fluid must be replaced periodically due to degradation of inhibitors over time. Follow all fluid manufacturer instructions. NOTE: BOILER FAILURE DUE TO IMPROPER WATER CHEMISTRY IS NOT COVERED BY WARRANTY. B. CHECK FOR GAS LEAKS Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Remove boiler front door and smell interior of boiler enclosure.
Page 62: Purge Air From Water System
E. PURGE AIR FROM WATER SYSTEM IMPORTANT! While commissioning the system, the air vent on top of the boiler must remain fully open to allow the boiler to properly fill. Failure to keep the air vent open could lead to improper boiler and system operation. To purge air from the system: a.
Page 63: Final Checks Before Starting Boiler
If the condensate outlet on the boiler is lower than the drain, you must use a condensate removal pump, available from HTP (554200). This pump is equipped with two leads that can be connected to an alarm or another type of warning device to alert the user of a condensate overflow, which, if not corrected, could cause property damage.
Page 64: Lockout Condition
J. LOCKOUT CONDITION If any boilers, including the master boiler in the cascade system, are in a lockout condition, the master control will recognize the lockout condition and skip over the boiler in the firing sequence. Each boiler in the cascade system is responsible for its own safety functions. So, if any individual boiler control senses an unsafe condition, it will extinguish the burner and, if necessary, go to a lockout condition.
Page 65: Operating Instructions
ENTER key to accept the code entered. If the code is correct, the readout will change to the appropriate screen. If the programming code is not accepted, the readout will continue to display as shown above. The ENTER key is also used to enable a function for editing. After the user navigates to the desired function, the user would hold down the ENTER key for one second.
Page 66: Programming The System Setting
Function: Adjusts the indirect tank set point. Default: 119 F (Range: 70 F to 185 DHW SET POINT Function: Adjusts the indirect tank differential set point. Default: 7 F (Range: 1 F to 30 DHW DIFF SET POINT Function: Adjusts the temperature measurement in F = Fahrenheit to C = Celsius (Default is Fahrenheit). TEMP DISPLAY C OR F Table 18 –...
Page 67 SCREEN DESCRIPTION Function 1 Factory Program Mode This screen indicates that the control is configured correctly. Do not change this setting. MODE INDIRECT Function 3 DHW Tank Max Temp This is the maximum temperature that can be selected for the DHW indirect tank set point in the boiler menu. Default: DHW TANK MAX TEMP F (Range: 95 F to 180...
Page 68: Resetting The Maintenance Schedule
Extra Boiler Mode EXTRA BOILER MODE Allows for a non HTP boiler to be controlled when the cascade output has risen above the percent of the cascade firing rate set in this parameter. Factory Default: Off (Range: 50% - 100%).
Page 69: Part 11 - Start-Up Procedures For Installer
Press ENTER on the display for 3 seconds. The Menu code will appear as 000. This does not change. Press ENTER again. SERVICE SCHEDULE RESET will be displayed. Using the right arrow key  scroll to the selection of year or hours. Select enter to reset the mode you are in.
Page 70 This screen displays the domestic hot water temperature set point on the top line. The actual temperature measured by the tank or return line sensor (HTP 7250P-325) is displayed on the bottom line. If a mechanical DHW SET aquastat is used in place of the recommended sensor, the second line will display ‘OFF’ in place of the temperature if the aquastat measures close to its set temperature, or ‘ON’...
Page 71: Cascade Menu
Press the ▼ key once. This screen displays the ninth oldest lockout fault that occurred in the boiler controller. The top line will alternate FAULT HISTORY between the words ‘FAULT HISTORY’ and the fault encountered. The bottom line displays the date and time the 08/28/2009 Fr 5:19A fault occurred.
Page 72: Part 12 - Shutdown
Carbon Dioxide (CO 8 - 10% 8 ½ - 10 ½% 8 ½ - 10 ½% 9 - 10 ½% 9 ½ - 11% Table 27 ELITE FT FAN SPEEDS MODEL IGNITION EFT-55 3800 1650 4050 EFT-80 3800 1850 5000 EFT-110 3800...
Page 73: Part 13 - Troubleshooting
PART 13 – TROUBLESHOOTING A. BOILER ERROR CODE If any of the sensors detect an abnormal condition, or an internal component fails during the operation of the boiler, the display may show an error message and error code. This message and code may be the result of a temporary condition, in which case the display will revert to its normal readout when the condition is corrected, or it may be a condition that the controller has evaluated as not safe to restart the boiler.
Page 74: User Interface Display
Fault Code LOU 1. Check line voltage. It must be between 100 and 128 volts. 2. If available, connect PC, and using HTP service software check the 24v supply This display indicates that display in the lower left corner of the screen. The number displayed here must be the 24 volt power supply on greater than 128 and should be no greater than 250.
Page 75 SCREEN DESCRIPTION POSSIBLE REMEDY Fault Code F01 1. If the boiler has a UL353 LWCO, check if the red LED on the This display indicates that the flue temperature LWCO control box is illuminated. If so, correct the low water con- limit switch of the boiler has tripped or that the dition and press the reset button on the LWCO control box to reset water level in the boiler is low (this will only occur...
Page 76 Fault Code F09 1. Watch the igniter through the observation window provided. 2. If there is no spark, check the spark electrode for the proper .156” (3.96 mm) gap (See Figure 34). 3. Remove any corrosion from the spark electrode and flame rectifier probe. 4.
Page 77 SCREEN DESCRIPTION POSSIBLE REMEDY Fault Code F20 The condensate trap is full. The red light will 1. Check condensate lines for obstructions. display and the word LOCKOUT will flash. This 2. Check wiring from condensate reservoir to 926 control. Verify the code indicates a serious safety issue.
Page 78: Part 14 - Maintenance
Table 30 PART 14 – MAINTENANCE A. MAINTENANCE PROCEDURES Periodic maintenance should be performed once a year by a qualified service technician to assure that all the equipment is operating safely and efficiently. The owner should make necessary arrangements with a qualified heating contractor for periodic maintenance of the boiler.
Page 79: Combustion Chamber Coil Cleaning Instructions For Boiler
The combustion chamber insulation in this product contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group 1).”...
Page 80: Maintaining The Condensate System
2. Close isolation valves on the return and supply connections to the boilers as shown in the piping diagrams within this manual. Slowly open the ball valves and release pressure into a bucket. Once pressure is released, connect a hose to the water line to flush the boiler. Scale removing solution may be used, but must be approved for use with stainless steel and FDA approved for use in a potable water system.
Page 81 Do not install the condensate assembly if a component is lost or missing. Replace the entire assembly. Failure to follow this warning could result in property damage, serious personal injury, or death. 6. Fill the condensate trap with fresh water prior to reassembly on the boiler. 7.
Page 82 EFT-55 / 80 / 110 PARTS BREAKDOWN Figure 36 - Replacement Parts - LP-387-J LP-387 REV. 12.15.14...
Page 83 EFT-55 / 80 / 110 PARTS BREAKDOWN Figure 37 – Replacement Parts - *#20 – Switch on the Left is the Blocked Flue Pressure Switch, Switch on the Right is the Blocked Condensate Pressure Switch – Both share same Part Number...
Page 84 EFT-155 / 199 / 285 / 399 PARTS BREAKDOWN Figure 38 - Replacement Parts - LP-387-KK LP-387 REV. 12.15.14...
Page 85 EFT-155 / 199 / 285 / 399 MODEL PARTS BREAKDOWN Figure 39 - Replacement Parts - LP-387-JJ – EFT-155 - 399 Models - *#15 – Switch on the Left is the Blocked Flue Pressure Switch, Switch on the Right is the Blocked Condensate Pressure Switch – Both share same Part Number LP-387 REV.
Page 86: Boiler Start-Up Report
BOILER START-UP REPORT LIGHT OFF ACTIVITIES DATE COMPLETED ________________ 1) Fill the Check all piping and gas connections, verify all heating are tight system Pressurize system (12 – 15 psi) ____ PSI Add water to prime condensate cup Percentage of glycol in system (0 – 50%) ____ % Verify near boiler piping is properly supported 2) Check gas...
Page 87 INSPECTION ACTIVITIES DATE LAST COMPLETED PIPING YEAR YEAR YEAR YEAR* Near boiler piping Check boiler and system piping for any sign of leakage. Continual fresh make-up water will reduce boiler life. Leaking pipes could cause property damage. Make sure all piping is properly supported.
Page 88 LP-387 REV. 12.15.14...
Page 89 LP-387 REV. 12.15.14...
Page 90: Maintenance Notes
MAINTENANCE NOTES LP-387 REV. 12.15.14...
Page 91: Htp Customer Installation Record Form
HTP CUSTOMER INSTALLATION RECORD FORM The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.

This manual is also suitable for:

Eft-110 Eft-155 Eft-199 Eft-80 Eft-285 Eft-399

HTP EFT-55 Installation & Maintenance Manual

Part 1 - General Safety Information

Part 2 - before You Start

Part 3 - Prepare Boiler Location

Part 4 - Prepare Boiler

Part 5 - Boiler Piping

Part 6 - Venting, Combustion Air, and Condensate Removal

Part 7 - Gas Piping

Part 8 - Field Wiring

Part 9 - Start-Up Preparation

Part 10 - Start-Up Procedure

Part 11 - Start-Up Procedures for Installer

Part 12 - Shutdown

Part 13 - Troubleshooting

Part 14 - Maintenance

Boiler Start-Up Report

Maintenance Report

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