HTP Elite FT Series Installation, Start-Up, Maintenance, Parts, Warranty
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HTP Elite FT Series Installation, Start-Up, Maintenance, Parts, Warranty

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Installation
Start-Up
Maintenance
Parts
Warranty
EFT-55 / 80 / 110 / 155 / 199 / 285 / 399*
Models with 5:1 Turndown Ratio
* "LP" Denotes Propane Gas Operation
"PU" Denotes Included Pump
This manual must only be used by a qualified installer / service technician. Read all instructions in this manual before installing. Perform
steps in the given order. Failure to do so could result in substantial property damage, severe personal injury, or death.
Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, severe
personal injury, or death.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other
reproductive harm.
The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for
typographical errors in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
272 Duchaine Blvd.
Commercial Models
New Bedford, MA 02745
Elite FT
Residential and
Heat Exchanger Bears the ASME "H" Stamp
www.htproducts.com
LP-387 Rev. 011 Rel. 005 Date 1.3.19

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  • Page 1 Elite FT Residential and Commercial Models Installation Start-Up Maintenance Parts Warranty EFT-55 / 80 / 110 / 155 / 199 / 285 / 399* Models with 5:1 Turndown Ratio * “LP” Denotes Propane Gas Operation “PU” Denotes Included Pump Heat Exchanger Bears the ASME “H” Stamp This manual must only be used by a qualified installer / service technician.
  • Page 2 WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. WHAT TO DO IF YOU SMELL GAS •...
  • Page 3 AHJ. DANGER indicates an imminently hazardous situation which, if NOTE: HTP reserves the right to modify product technical specifications not avoided, will result in serious personal injury or death. and components without prior notice.

  • Page 4: Table Of Contents

    In accordance with Section 325 (f) (3) of the Energy Policy and control. The control monitors the temperature difference between Conservation Act, HTP has provided this boiler with multiple the inlet and the outlet sensor, which is affected by boiler water features designed to save energy by reducing the boiler water flow.

  • Page 5: Part 1 - General Safety Information

    Act of God, and IS NOT covered under product warranty. B. Cascade Menu C. Boiler Test Mode Altering any HTP boiler with parts not manufactured by HTP WILL Part 12 - Troubleshooting INSTANTLY VOID the boiler warranty and could result in property A.

  • Page 6: Improper Combustion

    The high-efficiency heat exchanger can be damaged • NG to LP Conversion Kit (Included with NG Models) by build-up or corrosion due to sediment. HTP recommends a B. How the Boiler Operates suction strainer in this type of system.

  • Page 7: Optional Equipment

    The control can be set to monitor outdoor temperature through C. Optional Equipment an outdoor sensor to regulate boiler set point. The system can be Optional equipment available from HTP (and Part #): further enhanced by installing an indirect water heater to provide •...

  • Page 8: Locating The Boiler

    This boiler must be installed upright in the vertical position as described in this manual. DO NOT attempt to install this boiler in any other orientation. Doing so will result in improper boiler operation and property damage, and could result in serious personal injury or death.

  • Page 9: Clearances For Service Access

    Figure 3 - Recommended Service Clearances Minimum Clearances from Combustible Materials • Hot water pipes - at least 1” from combustible materials The space must be provided with combustion / ventilation air • Exhaust vent pipe - at least 1” from combustible materials openings correctly sized for all other appliances located in the same space as the boiler.

  • Page 10: Mounting To A Wood Studded Wall

    2. Mounting to a Metal Frame a. 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 55 –...

  • Page 11: Direct Vent Of Exhaust And Intake

    but not less than 100 square inches (645cm If the confined space is within a building of tight construction, air for Failure to vent the boiler properly will result in serious personal combustion must be obtained from the outdoors as outlined in the injury or death.

  • Page 12: Removing A Boiler From A Common Vent System

    Areas Likely Have Products to Avoid Contaminants Spray cans containing Dry cleaning / laundry areas fluorocarbons and establishments Permanent wave solutions Swimming pools Chlorinated waxes / cleaners Metal fabrication plants Chlorine-based swimming pool Beauty shops chemicals Calcium chloride used for thaw- Refrigeration repair shops Sodium chloride used for water Photo processing plants...
  • Page 13 • Hardness less than 7 grains (120 mg/L) (Water temperatures of 140 F and greater) • Hardness levels above the required amounts can lead to lime scale build-up throughout the system. Water below 5 grains/gallon (85 mg/L) may be over softened. •...

  • Page 14: Technical Specifications

    M. Technical Specifications Model Installation Indoor, Wall Hung, Fully Condensing 11,000 / 16,000 / 22,000 / 31,000 / 39,800 / 57,000 / 79,800 / Minimum / Maximum Input (Btu/Hr) 55,000 80,000 110,000 155,000 199,000 285,000 399,000 Heating Capacity (MBH) 367* Flue System Category IV, Sealed Combustion Direct Vent, Power Vent Minimum Combined Vent Run...
  • Page 15 Figure 6 - Boiler Dimensions - NOTE: All Dimensions Are Approximate LP-387 Rev. 011 Rel. 005 Date 1.3.19...

  • Page 16: Part 4 - Piping

    • Test T&P valve at least once annually to ensure the waterway water. HTP offers indirect water heaters in a wide range of gallon sizes is clear. If valve does not operate, turn the boiler “off” and in either stainless steel or glass-lined construction.

  • Page 17: Potable Expansion Tank

    Air must remain in the system and return to the tank to through HTP (Part # 7600P-104 for 55 – 110 models, 7600P-990 for 155 provide an air cushion. An automatic air vent would cause air to –...
  • Page 18 Figure 7 - Boiler Pressure Drop The chart below represents various system design temperature rise through the boiler along with respective flows and friction loss. This is provided to aid in circulator selection. System Temperature Rise Chart 20°Δt 25°Δt 30°Δt Model Friction Ft Flow Rate (GPM)

  • Page 19: Check / Control Water Chemistry

    through the installation of the boiler. H. Check / Control Water Chemistry 1. Connect the system return marked “Boiler Return”. NOTE: Boiler failure due to improper water chemistry is not 2. Connect the system supply marked “Boiler Supply”. covered by warranty. 3.

  • Page 20: Zoning With Zone Valves

    • Glycol in hydronic applications should include inhibitors that prevent the glycol from attacking metallic system components. Make certain that the system fluid is checked for the correct glycol concentration and inhibitor level. • The glycol solution should be tested at least once a year or as recommended by the glycol manufacturer.

  • Page 21: Applications

    O. Applications* Mixing valves are required for the protection of low temperature loops. Figure 8 - 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 155 / 199 / 285 / and 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 appliance to prevent gravity circulation.
  • Page 22 Figure 9 - Piping Symbol Legend LP-387 Rev. 011 Rel. 005 Date 1.3.19...
  • Page 23 Figure 10 - Standard Piping with Zone Valves and Indirect Priority NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3.
  • Page 24 Figure 11 - Standard Piping with Pumps and Indirect Priority NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3.
  • Page 25 Figure 12 - Primary / Secondary Piping with Zone Valves and Indirect Priority NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3.
  • Page 26 Figure 13 - Primary / Secondary Piping with Pumps and Indirect Priority NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameters center to center spacing. 3.
  • Page 27 If boiler supply temperature for DHW is set higher than central heating, the heating circuit must be protected by a thermostatic mixing thermostatic mixing valve. Figure 14 - Multiple Boilers - Primary / Secondary Piping with Pumps and Indirect Priority NOTES: 1.

  • Page 28: Part 5 - Venting

    Part 5 - Venting The boiler must be vented as detailed in this 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 the instructions provided in this manual.

  • Page 29: Approved Materials For Exhaust Vent And Intake Pipe

    B. Approved Materials for Exhaust Vent and Intake Pipe Standards for Installation In: Item Material United States Canada Pipe and Fittings Approved for Intake ONLY ABS* ANSI/ASTM D2661 NOT PERMITTED PVC Schedule 40/80 ANSI/ASTM D1785 PVC, CPVC, and PP Venting PVC-DWV Schedule 40/80 ANSI/ASTM D2665 Must be ULC-S636 Certified.

  • Page 30: Exhaust Vent And Intake Pipe Location

    D. Exhaust Vent and Intake Pipe Location INSIDE CORNER DETAIL FIXED OPERABLE CLOSED FIXED CLOSED OPERABLE LP-179-CC 03/28/17 Exhaust Vent Terminal Intake Pipe Terminal Area Where Intake Terminal Is Not Permitted Figure 15 - Exit Terminals for Direct Vent Systems - ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada DESCRIPTION CANADA Clearance above grade, veranda, porch, deck, or balcony...

  • Page 31: Exhaust Vent And Intake Pipe Sizing

    Standard Reducing E. Exhaust Vent and Intake Pipe Sizing Increased Vent Size Vent Connection Coupling 1. The exhaust vent and intake pipe size is 3” for 55 - 285 models and 4” for the 399 model. 3” 4” x 3” 4”...

  • Page 32: Applications

    The following table lists optional exhaust/intake terminations available for the installation of exhaust vent or air intake terminations. Snow from HTP: levels shall be determined as follows: Description Stock Code a. The installation location may, by ordinance, designate how snow 3”...
  • Page 33 Sidewall Venting with Kit Take extra precaution to adequately support the weight of vent EXTERIOR WALL pipes terminating through the roof. Failure to properly support roof VENT KIT terminated piping could result in property damage, serious injury, or death. TWO PIPE ROOF VENTING WITH TEE (INTAKE) EXHAUST AND COUPLING (EXHAUST) INSERT INLET/EXHAUST...

  • Page 34: Venting Through An Existing System

    EXHAUST Figure 20 - Unbalanced Venting - Roof Exhaust and Sidewall Intake AIR INTAKE NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for all equipment and detailing required by FRONT VIEW local codes. All vent pipes must be glued, properly supported, and the exhaust pitched a minimum of 1/4”...

  • Page 35: Power Venting, Indoor Combustion Air In Confined Or Unconfined Space

    NOTE: The following instructions refer only to venting through an Unconfined space is space with volume greater than 50 cubic feet existing vent system, and not to venting with HTP’s optional concentric per 1,000 Btu/hour (4.8 cubic meters per kW) of the total input vent kits.
  • Page 36 Indoor Combustion Air (Single Pipe) DO NOT INSTALL WATER HEATER, BOILER, OR APPLIANCE NEAR DRYER EXHAUST Outdoor Combustion Air (Single Pipe) LP-325-X Figure 22 - Do Not Place Appliance Near Dryer UPPER AIR DUCT Boiler, Water Heater, or Appliance LOWER AIR DUCT LP-325-T 8/5/2010...

  • Page 37: Part 6 - Condensate Removal

    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 condensate with a Condensate Neutralizer Kit (Part # 7450P-212 for 55 - 285 models, Part # 7350P-611 for the 399 model).
  • 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: Part 7 - Wiring

    Part 7 - Wiring Power to the optional condensate pump is continuous. When the boiler is powered off the condensate pump will remain on. It is important to remember to turn off the condensate pump when To avoid electrical shock, turn off all power to the boiler prior powering down the boiler.

  • Page 40: Line Voltage Wiring For Standard Boiler

    1. The boiler will operate an indirect fired water heater with either anticipator should be set to match the power requirements of the a thermostat type aquastat installed in the indirect tank or an HTP device(s). See the instruction manual of the connected device(s) for 7250P-325 tank sensor.

  • Page 41: Optional 0-10 Volt Building Control Signal

    Avoid running communication cables parallel and temperature of the boiler. The control interprets the 0-10 volt signal as close to or against high voltage (120 volt or greater) wiring. HTP follows; when the signal is between 0 and 1.5 volts, the boiler will be recommends that the maximum length of communication bus in standby mode, not firing.

  • Page 42: Cascade Master Pump And Sensor Wiring

    5. Connect the boilers in a daisy chain configuration as shown N. Cascade Follower Pump and Sensor Wiring below. It is best to wire the boilers using the shortest wire runs 1. Connect the boiler pump to the terminals labeled 1 (HOT), 2 (NEUT), rather than trying to wire them in the order that they are addressed.
  • Page 43 Figure 33 - Internal Connection Diagram LP-387 Rev. 011 Rel. 005 Date 1.3.19...

  • Page 44: Part 8 - Gas Connections

    Part 8 - Gas Connections Support gas supply piping with hangers, not by the boiler or its accessories. The boiler gas valve and blower will not support the weight of the piping. Make sure the gas piping is protected from Failure to follow all precautions could result in fire, explosion, severe physical damage and freezing, where required.

  • Page 45: Check Inlet Gas Pressure

    Do not do a gas conversion on this boiler without an officially The gas valve is equipped with an inlet gas pressure tap that can be approved conversion kit and instructions supplied by HTP. Failure to used to measure the gas pressure to the unit. To check gas pressure,...

  • Page 46: Boiler Gas Valve

    discontinue use of the appliance and contact an authorized technician C. Boiler Gas Valve or licensed professional. • Water pH between 6.5 and 8.5 • Hardness less than 7 grains (120 mg/L) (Water temperatures of 140 F and greater) • Chloride concentration less than 100 ppm (mg/L) •...

  • Page 47: Fill And Test Water System

    Apply power to the available from HTP (554200). This pump is equipped with two leads boiler. The display will show the temperature of the water in the that can be connected to an alarm or another type of warning device boiler.

  • Page 48: Setting Up A Single Boiler

    required temperature, the master boiler control will then tell the next 2. Verify the boiler and system are full of water and all system boiler in the firing sequence to begin its demand sequence. The master components are correctly set for operation. boiler control will then begin to ramp up the firing rate command of that boiler.

  • Page 49: Part 10 - Start-Up Procedure

    Example: In a 2 boiler system with an indirect connected to B. Navigation of the Display the follower, the follower address would be 2 (address 1 is not The display includes a two line backlit LCD readout to provide used). informative messages about the operation of the boiler.

  • Page 50: Programming The System Setting

    the boiler, such as the tank thermostat, is turned off, so the boiler CLOCK YEAR Adjusts the year setting. will remain idle to allow programming. 08/28/2009 Fr 10:01A Screen Description CLOCK MONTH Adjusts the month setting. 08/28/2009 Fr 10:01A To access the boiler setting program, press and hold ENTER for 4 seconds ENTER MENU CODE CLOCK DATE...
  • Page 51 Screen Description Function 18 Step Modulation Mode Function 7 Warm Weather Shutoff Allows the user to turn ON the step modulation, which regulates burner When used with an outdoor sensor, output in six steps at one minute warm weather shut down will disable STEP MODULATE MODE WARM WEATHER OFF intervals.

  • Page 52: Resetting The Maintenance Schedule

    10000’s 000000 MOD). before next service reminder. Function 30 Extra Boiler Mode Function 35 Allows for a non HTP boiler to be SERVICE SCHEDULE Sets the day of next service reminder. controlled when the cascade output DAY 00/00/2000 EXTRA BOILER MODE...

  • Page 53: Part 11 - Start-Up Procedures For The Installer

    Displays the current tank temperature set point on the top line. The actual temperature measured by the tank or return sensor (HTP 7250P-325) is displayed on the bottom line. If a DHW SET mechanical aquastat is used in place of the recommended sensor, the second line will display ‘OFF’...
  • Page 54 The top line displays the voltage on This screen displays the fourth oldest 0-10 V 0.0V the optional input. This voltage is only boiler control lockout fault. The top BOILER relevant if an external 0-10 volt signal line will alternate between the words FAULT HISTORY is being used to control the boiler.

  • Page 55: Cascade Menu

    This screen displays overall cascade B. Cascade Menu power output. The range of this value is This menu is accessed by pressing < at the default menu or > at the the number of boilers communicating status menu. with the Master x 100. For example, CASCADE PWR 100% Screen...

  • Page 56: Part 12 - Troubleshooting

    3. Press RESET to clear the fault and resume operation. Be sure to Combustion Settings on All Models observe the operation of the unit for a period of time to assure Natural Gas (NG) Propane (LP) correct operation and no reoccurrence of fault message. Fan Speed Low Ignition High...

  • Page 57: User Interface Display

    D. User Interface Display Cascade Control Fault Codes Screen Description Possible Remedy Disconnect the system sensor from the wiring and measure it’s resistance. Compare the measured resistance E03 indicates a problem with the system to the table in this manual to see if it corresponds to the sensor circuit.
  • Page 58 1. Check line voltage. It must be between 100 and 128 volts. 2. If available, connect a PC and use HTP service software to check the 24v supply display in the lower left corner of the screen. The number displayed here must be greater than 128 and should be no greater than 250.
  • Page 59 F03 indicates the return temperature sensor of the boiler has failed. The boiler will not 1. Check circulator pump operation. restart until a technician replaces the sensor 2. Ensure adequate flow through the boiler by accessing RETURN SENSOR F03 and pushes RESET on the display. This is the status menu and determining there is less than a 50 PUMP ON a serious safety issue as indicated by the...
  • Page 60 1. Watch the igniter through the observation window. 2. If there is no spark, check the spark electrode for the proper .156” (3.96 mm) gap. See below. 3. Remove any corrosion from the spark electrode and flame rectifier probe. 4. If there is a spark but no flame, check the gas supply to the boiler.
  • Page 61 The fan is not running at the speed 1. Check the combustion fan wiring. determined by the control. Fan speed has 2. Measure DC voltage from the red fan wire to ground been more than 30% faster or slower than while it is connected to the fan.

  • Page 62: Part 13 - Maintenance

    b. Connect the thermostat wires to the field connection board, Part 13 - Maintenance or turn up thermostat to fire the combustion system. Check for leaks in the combustion system. Observe operation for 5 to 10 A. Procedures minutes. Periodic maintenance should be performed once a year by a qualified If boiler is operating properly, condensate is flowing normally, and service technician to assure that all the equipment is operating safely no gas leaks are detected, combustion coil cleaning is complete.

  • Page 63: Cleaning Water Side Of Heat Exchanger

    C. Cleaning Water Side of Heat Exchanger 1. Make sure power is turned off to the boiler. Run water through the hot water system to ensure it is below room temperature. 2. Close isolation valves on the return and supply connections to the boilers as shown in the piping diagrams in this manual.

  • Page 64: Part 14 - Shutdown

    D. Important Notice Do not operate the boiler without the clear hose attached from the hose barb to the pressure switch. Failure to follow this warning could It is extremely important that whenever work is performed on the result in property damage, serious personal injury, or death. plumbing system that either: 10.

  • Page 65: Part 15 - Installation Checklist

    Part 15 - Installation Checklist Light Off Activities Date Completed: Check all piping and gas connections. Verify all are tight. Pressurize system. (12 - 15 psi) 1. Fill the Heating System Add water to prime condensate cup. Percentage of glycol in system (0 - 50%) Verify near boiler piping is properly supported.
  • Page 66 Inspection Activities Date Last Completed Piping 1st Year 2nd Year 3rd Year 4th Year* Check boiler and system piping for any sign of leakage; make sure Near boiler piping pipes are properly supported. Check condition of all vent pipes and joints. Ensure the vent piping Vent terminations are free of obstructions and blockages.

  • Page 67: Part 17 - Replacement Parts

    Part 17 - Replacement Parts Figure 37 - Combustion System Replacement Parts - 55 - 110kBTU Models LP-387 Rev. 011 Rel. 005 Date 1.3.19...
  • Page 68 Figure 38 - Replacement Parts - 55 - 110kBTU Models - *#20 - Switch on the Left is the Blocked Flue Pressure Switch on the Right is the Blocked Condensate Pressure Switch - Both share same Part Number LP-387 Rev. 011 Rel. 005 Date 1.3.19...
  • Page 69 ITEM DESCRIPTION 7500P-031 7350P-159 COMBUSTION BLOWER 7500P-075 GASKET - COMBUSTION BLOWER 7600P-908 7600P-909 AIR CHANNEL (w/GASKET, SCREWS) 7600P-105 7600P-106 GASKET - BURNER 7600P-155 7600P-114 7600P-115 BURNER (w/GASKET) FLAME RECTIFICATION PROBE 7600P-087 (w/GASKET, SCREWS) 7350P-021 IGNITOR (w/GASKET, SCREWS) 7600P-910 7600P-911 BURNER DOOR 7600P-112 7600P-113 GASKET - BURNER DOOR 7600P-110...
  • Page 70 7600P-007 7600P-007* WATER PRESSURE SWITCH 7450P-030 7600P-150 3"/4" INTAKE ADAPTER 7600P-499 7600P-119 3"/4" EXHAUST ASSEMBLY " 4 . S . 7250P-059 7250P-667* THERMISTOR (w/O-RING) 7600P-904 7600P-905 LOW VOLTAGE WIRING HARNESS (not shown) 7600P-906 7600P-907 120V WIRING HARNESS (not shown) 7600P-906** 7600P-916** 7600P-917** 120V WIRING HARNESS (not shown) 7600P-128 7600P-228 FRONT COVER ASSEMBLY...

  • Page 71: Limited Warranty

    This limited warranty is only available to the original consumer the manufacturer’s installation instructions. purchaser (herinafter “Owner”) of this boiler, and is non-transferable. H. It is expressly agreed between HTP and the Owner that repair, replacement, or refund are the exclusive remedies of the Owner. COVERAGE...
  • Page 72 During the claims process a product that must be replaced will be given a 14. Failure or performance problems caused by improper sizing of the designation of either a) field scrap, or b) return to HTP. If the product must boiler, expansion device, piping, or the gas supply line, the venting...

  • Page 73: Maintenance Notes

    Maintenance Notes LP-387 Rev. 011 Rel. 005 Date 1.3.19...
  • Page 74 Customer Installation Record Form The following form should be completed by the qualified installer / service technician 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. Customer’s Name Date of Installation Installation Address...

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