Table of Contents
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Installation
Start-Up
Maintenance
Parts
Warranty
EFT-285 / EFT-399*
Models Manufactured On or After 10/30/17
with 10:1 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-657 Rev. 001 Rel. 000 Date 12.10.18
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Table of Contents
Related Manuals for HTP Elite FT EFT-285
Summary of Contents for HTP Elite FT EFT-285
- Page 1 Elite FT Residential and Commercial Models Installation Start-Up Maintenance Parts Warranty EFT-285 / EFT-399* Models Manufactured On or After 10/30/17 with 10:1 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.
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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. C. Boiler Test Mode Part 12 - Troubleshooting Altering any HTP boiler with parts not manufactured by HTP WILL A. Boiler Error and Fault Codes INSTANTLY VOID the boiler warranty and could result in property B. -
Page 6: Improper Combustion
(without boiler connected) to remove B. How the Boiler Operates sediment. The high-efficiency heat exchanger can be damaged by build-up or corrosion due to sediment. HTP recommends a Elite FT® condensing technology intelligently delivers hydronic heating while maximizing efficiency. Outlined below are the features suction strainer in this type of system. -
Page 7: Optional Equipment
C. Optional Equipment domestic hot water. Optional equipment available from HTP (and Part #): The control can regulate the output of multiple boilers through • System Sensor (7250P-324) its cascade system function. The cascade system is capable of •... -
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 at least 18 gauge studs. -
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. •...
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Page 14: Technical Specifications
M. Technical Specifications Model Installation Indoor, Wall Hung, Fully Condensing Minimum / Maximum Input (Btu/Hr) 28,500 / 285,000 39,900 / 399,000 Heating Capacity (MBH) 367* Flue System Category IV, Sealed Combustion Direct Vent, Power Vent Minimum Combined Vent Run 16 feet Maximum Combined Vent Run 3”... -
Page 15: Part 4 - Piping
The boiler may be connected to an indirect water heater to supply domestic hot water. HTP offers indirect water heaters in a wide range of gallon sizes in either stainless steel or glass-lined construction. -
Page 16: Relief Valve
B. Relief Valve D. Potable Expansion Tank Expansion Tank and Make-Up Water Connect discharge piping to a safe disposal location following the 1. Ensure that the expansion tank is sized to correctly handle boiler guidelines below. and system water volume and temperature. To avoid water damage or scalding due to relief valve operation: Expansion tanks must be sized according to total system volume. -
Page 17: Circulator Sizing
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-990). Check with local codes for additional requirements. If the boiler supplies hot water to heating... - 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)
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Page 19: Check / Control Water Chemistry
1. Connect the system return marked “Boiler Return”. H. Check / Control Water Chemistry 2. Connect the system supply marked “Boiler Supply”. NOTE: Boiler failure due to improper water chemistry is not 3. Install a purge and balance valve or shut off valve and drain on the covered by warranty. -
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. 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-657 Rev. 001 Rel. 000 Date 12.10.18...
- Page 23 Figure 10 - 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 24 Figure 11 - 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 25 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 12 - Multiple Boilers - Primary / Secondary Piping with Pumps and Indirect Priority NOTES: 1.
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Page 26: 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 27: 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 ABS* ANSI/ASTM D2661 NOT PERMITTED for Intake ONLY PVC Schedule 40/80 ANSI/ASTM D1785 PVC, CPVC, and PP Venting Must PVC-DWV Schedule 40/80 ANSI/ASTM D2665 be ULC-S636 Certified. -
Page 28: 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 13 - 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 29: Exhaust Vent And Intake Pipe Sizing
Standard Reducing E. Exhaust Vent and Intake Pipe Sizing Increased Vent Size Vent Connection Coupling Model Vent Size Maximum Total Equivalent Vent Length 3” 4” x 3” 4” 3” 150 Feet 4” 6” x 4” 6” 4” 200 Feet 6” 8”... -
Page 30: Applications
The following table lists optional exhaust/intake terminations available 17. Maximum Snow Level Determination: These installation from HTP: instructions reference snow levels in establishing a minimum height Description Stock Code for the installation of exhaust vent or air intake terminations. Snow 3”... - Page 31 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...
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Page 32: Venting Through An Existing System
EXHAUST Figure 18 - 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 33: 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 34 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 20 - Do Not Place Appliance Near Dryer UPPER AIR DUCT Boiler, Water Heater, or Appliance LOWER AIR DUCT LP-325-T 8/5/2010...
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Page 35: 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 the 285 model, Part # 7350P-611 for the 399 model). - Page 36 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.
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Page 37: 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 38: 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 39: Optional 0-10 Volt Building Control Signal
0-10 or damaged. Avoid running communication cables parallel and volt signal as follows; when close to or against high voltage (120 volt or greater) wiring. HTP the signal is between 0 and recommends that the maximum length of communication bus 1.5 volts, the boiler will be... -
Page 40: 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 41 Figure 31 - Internal Connection Diagram lp-657 Rev. 001 Rel. 000 Date 12.10.18...
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Page 42: Part 8 - Gas Connections
Part 8 - Gas Connections Do not use Teflon tape on gas line pipe thread. Use a pipe Failure to follow all precautions could result in fire, explosion, severe compound rated for use with natural and propane gases. Apply injury, or death. sparingly on male pipe ends, leaving the two end threads bare It is very important that you are connected to the type of gas noted and flow unobstructed. -
Page 43: Check Inlet Gas Pressure
(static) mode and while in operating (dynamic) mode. If an in-line regulator is used, it must be a minimum of 10 feet from the Use two wrenches when tightening gas piping at the boiler: One boiler. It is very important that the gas line is properly purged by the to prevent the boiler gas line from turning. -
Page 44: 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 45: 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 46: 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 47: 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 48: 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, ENTER MENU CODE press and hold ENTER for 4 seconds CLOCK DATE... - Page 49 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.
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Page 50: 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 51: 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 52 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.
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Page 53: 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 54: Part 12 - Troubleshooting
Combustion Settings on All Models Natural Gas (NG) Propane (LP) When servicing or replacing components that are in direct contact Fan Speed Ignition High Ignition High with boiler water, be certain that: • There is no pressure in the boiler. (Pull the release on the relief Carbon valve. -
Page 55: 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 56 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 57 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 58 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 59 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.
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Page 60: 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 61: 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 62: 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 It is extremely important that whenever work is performed on the could result in property damage, serious personal injury, or death. plumbing system that either: 10. -
Page 63: 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 64 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.
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Page 65: Part 17 - Replacement Parts
Part 17 - Replacement Parts 7100P-330 COMBUSTION BLOWER (w/GASKET 7500P-075 GASKET - COMBUSTION BLOWER 7600P-908 7600P-909 AIR CHANNEL (w/GASKET, SCREWS) 7600P-105 7600P-106 GASKET - BURNER 7600P-114 7600P-115 BURNER (w/GASKET) 7600P-087 FLAME RECTIFICATION PROBE (w/GASKET, SCREWS) 7350P-021 IGNITOR (w/GASKET, SCREWS) 7600P-910 7600P-911 BURNER DOOR 7600P-112 7600P-113 GASKET - BURNER DOOR 7600P-110 7600P-111 REFRACTORY - BURNER DOOR 7250P-005... - Page 66 Figure 36 - Cabinet Replacement Parts lp-657 Rev. 001 Rel. 000 Date 12.10.18...
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Page 67: 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 68 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...
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Page 69: Maintenance Notes
Maintenance Notes lp-657 Rev. 001 Rel. 000 Date 12.10.18... -
Page 70: Customer Installation Record Form
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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