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HTP Elite Ultra ELU-150WBN Installation Start-Up Maintenance

High efficiency condensing wall-hung gas boilers
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Installation
Start-Up
Maintenance
ELU-150WBN / ELU-199WBN / ELU-199WCN Models
DANGER
!
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.
WARNING
!
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.
272 Duchaine Blvd.
Elite Ultra
High Efficiency Condensing
Wall-Hung Gas Boilers
The manufacturer reserves the right to make product
changes or updates without notice and will not be held
liable for typographical errors in literature.
The surfaces of these products contacted by potable
(consumable) water contain less than 0.25% lead by weight
as required by the Safe Drinking Water Act, Section 1417.
PLEASE KEEP ALL INSTRUCTIONS
New Bedford, MA 02745
Heat Exchanger Bears the ASME "H" Stamp
NOTICE
NOTE TO CONSUMER:
FOR FUTURE REFERENCE.
www.htproducts.com
420011303900 Revision Date 2.28.22
TM

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Do you have a question about the Elite Ultra ELU-150WBN and is the answer not in the manual?

Questions and answers

Josh Knuth
April 30, 2025

How would you hook up a Tekmar 561 WiFi thermostat to the boiler?

User image 6812896f70759
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1 comments:
Mr. Anderson
May 16, 2025

To connect a Tekmar 561 WiFi thermostat to an HTP ELU-150WBN boiler:

1. Power Off: Turn off power to the boiler at the breaker.

2. Access Low Voltage Terminal: Open the boiler’s front cover and access the low voltage wiring connections as described.

3. Room Thermostat Wiring:
- Use the low voltage terminals labeled for thermostat connection.
- Connect the Tekmar 561 thermostat wiring to the appropriate terminals, following the thermostat’s wiring diagram and matching it to the boiler’s control terminals (e.g., R and W terminals).

4. Clamp Cable: Secure the thermostat cable with the clamp provided.

5. Restore Power: Close the boiler cover and restore power.

Important Notes:
- Do not connect 120V to any control wiring terminal.
- The Tekmar 561 connects through dry contact outputs, not through WiFi to the boiler.
- Only the Master boiler in a cascade setup can be connected to WiFi.

Ensure proper wiring to avoid damage or malfunction.

This answer is automatically generated

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Summary of Contents for HTP Elite Ultra ELU-150WBN

  • Page 1 Elite Ultra High Efficiency Condensing Wall-Hung Gas Boilers Installation Start-Up Maintenance ELU-150WBN / ELU-199WBN / ELU-199WCN Models Heat Exchanger Bears the ASME “H” Stamp DANGER NOTICE The manufacturer reserves the right to make product This manual must only be used by a qualified installer / changes or updates without notice and will not be held service technician.
  • Page 2 WARNING 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 Installation should be made in accordance with the regulations of SPECIAL ATTENTION BOXES the Authority Having Jurisdiction, local code authorities, and utility The following defined terms are used throughout this manual to companies which pertain to this type of water heating equipment. bring attention to the presence of hazards of various risk levels or to Authority Having Jurisdiction (AHJ) –...

  • Page 4: Table Of Contents

    In accordance with Section 325 (f) (3) of the Energy Policy and work to shutoff the fuel supply when the system water temperature Conservation Act, HTP has provided this boiler with multiple reaches the preset operating temperature; and they cause a safety...
  • Page 5 PART 5 - VENTING PART 13 - TROUBLESHOOTING A. General A. Boiler Protection Devices B. Approved Materials for Exhaust Vent and Intake Pipe 1. Blocking Error C. Additional Requirements for Installation in Canada 2. Lockout Error D. Exhaust Vent and Intake Pipe Location 3.

  • Page 6: Part 1 - General Safety Information

    PART 1 - GENERAL SAFETY INFORMATION This boiler is approved for indoor installations only and is not intended WARNING for use as a pool heater. Clearance to combustible materials: 0” top, bottom, sides, and back. Boiler must have room for service: 18” front, This boiler must be installed by a qualified service technician.

  • Page 7: Improper Combustion

    DO NOT alter or modify the appliance or appliance controls. Altering any HTP boiler with parts not manufactured by HTP WILL • To avoid electric shock, disconnect electrical supply before INSTANTLY VOID the boiler warranty and could result in property performing maintenance.

  • Page 8: Freeze Protection

    (40 CFR Part 143.3). If the water contains CH applications. contaminants higher than outlined by the EPA, water treatment is NOTE: HTP DOES NOT WARRANT THE BOILER AGAINST FREEZE- recommended and additional, more frequent maintenance may be RELATED DAMAGE.

  • Page 9: Water Temperature Adjustment And Scalding

    NOTICE Approximate Time / Temperature Relationships in Scalds More than 5 minutes The use of glycol may reduce the usable BTU output of the boiler, 1 1/2 to 2 minutes requiring the unit to be “down-fired” by limiting the maximum About 30 seconds operating capacity and/or water temperature.

  • Page 10: Part 2 - Before You Start

    PART 2 - BEFORE YOU START How the Boiler Operates NOTICE ELU condensing technology intelligently delivers hydronic heating while maximizing efficiency. Outlined below are system features and UNCRATING THE BOILER - Any claims for damage or shortage in operation: shipment must be filed immediately against the transportation Stainless Steel Heat Exchanger company by the consignee.

  • Page 11: Optional Equipment

    Failure of boiler or components due to incorrect operating B. Optional Equipment conditions IS NOT covered by product warranty. Optional equipment available from HTP (and Part #): This boiler must be installed upright in the vertical position as •...

  • Page 12: Leveling

    NOTE: When installing in a zero clearance location, it may not be CAUTION possible to read or view some product labeling. It is recommended to make note of the boiler model and serial number. The service life of the boiler’s exposed metallic surfaces, such as NOTE: A combustible door or removable panel is acceptable front the casing, as well as internal surfaces, such as the heat exchanger, clearance.

  • Page 13: Wall Mounting Considerations

    C. Clearances for Service Access Alcove Installations Alcove installations have the same minimum dimensions as closet NOTE: If you do not provide the minimum clearances shown in Figure installations, except the installation must be completely open to the 4 and Table 6 it might not be possible to service the boiler without room at a distance no greater than 18 in.

  • Page 14: Mounting To A Wood Studded Wall

    WARNING This wall mounting system is not seismic rated and should not be applied as such. Failure to comply with the above and properly mount the boiler could result in substantial property damage, severe personal injury, or death. Use extreme care not to drop the boiler or cause bodily injury while lifting or mounting the boiler onto the wall mount bracket.

  • Page 15: Carbon Monoxide Detectors

    WARNING CAUTION Vents must be properly supported. Boiler exhaust and intake When drawing combustion air from the outside into the mechanical connections are not designed to carry heavy weight. Vent support room, care must be taken to provide adequate freeze protection. brackets must be within 1’...

  • Page 16: Prevent Combustion Air Contamination

    I. Prevent Combustion Air Contamination J. Removing a Boiler from a Common Vent System Install intake air piping for the boiler as described in the Venting WARNING Section, this manual. Do not terminate exhaust in locations that can allow contamination of intake air. Do not install the boiler into a common vent with any other WARNING appliance.

  • Page 17: Technical Specifications

    K. Technical Specifications Model ELU-150WBN ELU-199WBN ELU-199WCN Boiler Combi Type Indoor, Wall Hung, Fully Condensing Installation 19,700 / 197,000 19,700 / 197,000 15,000 / 150,000 Minimum / Maximum Input (Btu/Hr) 19,200 / 192,000 19,200 / 192,000 DOE AFUE 1, 2 Heating Capacity (MBH) Net AHRI Rating, Water (MBH)
  • Page 18 4 " 4 " 4 " 8 " 8 " 8 " 4 " B C D 2 " 4 " 4 " 3" 8 " 8 " 4 " 3" 2 " Figure 8 - Boiler Dimensions - NOTE: All Dimensions Are Approximate Model Boiler Models Model...
  • Page 19 Model Components Pressure relief valve Circulation Pump Air purge valve DHW Flow Sensor (Combi Models Only) Boiler outlet temperature sensor Water pressure switch Air pressure switch Modulating Fan Flue gas temperature sensor Boiler inlet temperature sensor Main heat exchanger Frame Flame detection electrode Ignition electrode Silencer...
  • Page 20 Combi Models Boiler Models Pressure relief valve Air purge valve Boiler outlet temperature sensor DHW Temperature Sensor Flue gas temperature sensor Main heat exchanger Flame detection electrode Silencer DHW heat exchanger (Combi Models Only) Condensate trap Gas valve Circulation Pump DHW Flow Sensor (Combi Models Only) Water pressure switch Modulating Fan...

  • Page 21: Part 4 - Water 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 Undersized expansion tanks cause system water to be lost from the either stainless steel or glass-lined construction.

  • Page 22: Piping The Boiler

    DHW inlet is recommended for ease of water. service. HTP offers threaded 3/4” DHW tankless isolation valves with a DHW pressure relief valve for ease of installation and future service. Use at least the MINIMUM pipe size for all appliance loop piping.

  • Page 23: Internal Circulation Pump

    E. Internal Circulation Pump DHW Loop (Combi Models) The DHW piping must be provided with a DHW pressure relief valve that To calculate the size of the heating installation refer to the graph below. complies with local codes, but not less than valves certified as meeting the requirements of Relief Valves for Hot Water Supply Systems, ANSI Graph Representing the Available Circulation Pump Head Z21.22 / CSA4.4 by a nationally recognized lab that maintains periodic...

  • Page 24: Air Elimination Device

    WARNING RE-INSPECTION OF RELIEF VALVES: Relief valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and replaced if necessary, by a licensed plumbing contractor or qualified service technician to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally.
  • Page 25 Cap this fitting when not in use Primary/Secondary Piping Shown - See Note 2 Figure 15 - Boiler with Single Central Heating Circulator NOTE: In piping applications utilizing a single zone, it is recommended NOTES: that the installer use flow / check valves with weighted seats at or near 1.
  • Page 26 WARNING direct (not primary secondary) piping applications, the expansion vessel must be placed on the return side of the boiler as illustrated. Placement of flow resticting devices, such as check valves, is prohibited between the boiler return and the expansion vessel. Failure to place the expansion vessel as instructed, may result in the release of the pressure...
  • Page 27 Cap this fitting when not in use Primary/Secondary Piping Shown - See Note 2 Figure 17 - Boiler with Multiple Central Heating Circulators NOTE: In piping applications utilizing a single zone, it is recommended NOTES: that the installer use flow / check valves with weighted seats at or near 1.
  • Page 28 Primary/Secondary Piping Shown - See Note 2 Figure 18 - Combi Boiler with Single Central Heating Circulator NOTE: In piping applications utilizing a single zone, it is recommended NOTES: that the installer use flow / check valves with weighted seats at or near 1.
  • Page 29 WARNING For direct (not primary / secondary) piping applications, the expansion vessel must be placed on the return side of the boiler as illustrated. Placement of flow resticting devices, such as check valves, is prohibited between the boiler return and the expansion vessel. Failure to place the expansion vessel as instructed, may result in the release of the pressure relief valve, property damage, severe personal injury, or death.
  • Page 30 CAUTION In mixed temperature applications, a mixing valve is required for the protection of low temperature loops. Primary/Secondary Piping Shown - See Note 2 Figure 20 - ELUWCN with Multiple Central Heating Circulators NOTE: In piping applications utilizing a single zone, it is recommended NOTES: that the installer use flow / check valves with weighted seats at or near 1.
  • Page 31 Figure 21 - ELUWCN with Recirculation NOTES: WARNING 1. This drawing is meant to show piping concept only. Installer is responsible for all equipment and detailing required by local codes. The piping will not support the weight of the circulators. Refer to 2.

  • Page 32: Floor Drying Function

    J. Floor Drying Function The Floor Drying Function is a special function that allows the installer, through a dedicated heating cycle, to use the boiler for drying a freshly poured radiant floor during a floor system installation. The installer can set parameter 2.7.4 (Floor Drying Cycle) and choose the cycle‘s operation (Functional Heating, Curing Heating, a combination of Functional and Curing Heating, or Manual Heating).

  • Page 33: Part 5 - Venting

    PART 5 - VENTING DANGER 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 34: 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 ABS* ANSI/ASTM D2661 ANSI/ASTM D2661 Pipe and Fittings Approved for Intake ONLY PVC Schedule 40/80 UL-1738 or ANSI/ASTM D1785 PVC-DWV Schedule 40/80 UL-1738 or ANSI/ASTM D2665 UL-1738 or ULC-S636 Pipe Approved for...

  • Page 35: 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 22 - 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 36: Exhaust Vent And Intake Pipe Sizing

    E. Exhaust Vent and Intake Pipe Sizing F. Tightening Boiler Collar to Exhaust Vent and Intake Pipe 1. All models ship with 3” diameter vent pipe exhaust vent and intake air pipe connections. Follow the steps to install exhaust vent pipe into the boiler vent a.

  • Page 37: Exhaust Vent And Intake Pipe Installation

    14. In vacant chimney applications, install and seal a rain cap over The following table lists optional exhaust/intake terminations available existing chimney openings. from HTP: 15. All piping must be fully supported. Use pipe hangers at a minimum of 4 foot intervals to prevent sagging of the pipe where...

  • Page 38: Applications

    Vent Option Availability Vent Supplier Vent Material Description Figure Size Part Number Compatibility Roof Wall 2” 196984 26, 30 IPEX (or Equivalent) Low Profile (Wall) 3” 196985 26, 30 2” 196125 27, 31, 38, 42 PVC/CPVC IPEX (or Equivalent) Concentric 196116 27, 31, 38, 42 4, 5, 6, 7...
  • Page 39 Sidewall Venting Options - Direct Vent Installation Low Profile Termination Two Pipe Termination WARNING WARNING Exhaust must terminate a minimum of 18” above the air intake 3” IPEX Low Profile Termination illustrated. See Figure 30 for more termination. See Figure 29 for more details. details.
  • Page 40 Sidewall Venting Options - Direct Vent Installation Low Profile Termination Two Pipe Termination WARNING 4 in min. Refer to documentation included with termination kit for complete installation instructions. Gas Vent Directly Gas Vent Below Keep Free of Directly Obstructions Below Keep Free of Obstructions Figure 30 - Low Profile Sidewall Termination (with Optional IPEX Kit)
  • Page 41 Snorkel Venting (Two Pipe Sidewall Venting Terminations Venting Below Grade Beneath an Overhang) For installations that exit the wall below grade: 1. Excavate the site to a point where the pipes are to exit as shown in Figure 34. 2. Ensure the wall is fully sealed where the pipes penetrate. 3.
  • Page 42 Roof Venting Options - Direct Vent Installation Two Pipe Termination Unbalanced Termination (Roof Exhaust / Sidewall Intake) WARNING WARNING Exhaust Exhaust must terminate Exhaust must terminate minimum 18” a minimum of 12” above snow level. See Figure 41 above the air intake Exhaust termination.
  • Page 43 Roof Venting Options - Direct Vent Installation Unbalanced Venting - Roof Exhaust Termination Two Pipe Termination WARNING Figure illustrates two options for exhaust termination only. Neither vent pipe illustrated is intended for combustion air intake. 4 in min. Figure 40 - Two Pipe Roof Venting Detail Figure 41 - Unbalanced Venting - Roof Exhaust Termination Options Concentric Termination WARNING...

  • Page 44: Venting Through An Existing System

    NOTE: The following instructions refer only to venting through an resulting in substantial property damage, serious personal injury, existing vent system, and not to venting with HTP’s optional concentric or death. vent kits. Refer to Concentric Vent Kit installation manual (LP-166) for further information on venting with the optional concentric vent kits.

  • Page 45: Power Venting, Indoor Combustion Air In Confined Or Unconfined Space

    3. Power Venting, Indoor Combustion Air 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 7.

  • Page 46: Part 6 - Installing The Condensate Drain

    If the boiler condensate outlet is lower than the drain, you must 2. The condensate line should be as short as possible and must be use a condensate removal pump (kit p/n 554200 available from HTP). pitched at least ¼” per foot to properly drain. If this cannot be done, NOTE: If a nearby laundry tub is used as a disposal for waste water increase the condensate line to a minimum of 1”...

  • Page 47: Part 7 - Connecting Electrical Service

    PART 7 - CONNECTING ELECTRICAL SERVICE NOTE: For additional electrical protection, the use of a whole house WARNING surge protector is recommended. Damage caused by power surges IS NOT covered by the warranty. Install wiring and electrically ground boiler in accordance with the 1.

  • Page 48: Room Thermostat Wiring Connections

    7. Open the control panel cover to have access to the main PCB. See 3. Room Thermostat Wiring Connections Figure 51. To connect a room thermostat: Access the low voltage wiring connections by following the directions in Item 2, Low Voltage Wiring Connections. Loosen the cable clamp using a screwdriver and insert the wires leading from the room thermostat.

  • Page 49: Internal Wiring Details

    B. Internal Wiring Details POWER-IN DHW PUMP FUSE 5AT FUSE 5A CN16 CN22 CN26 CN19 CN12 CN20 Figure 54 - Electrical Wiring Diagram PART 7 420011303900 - Revision Date 2.28.22...
  • Page 50 Figure 55 - Ladder Diagram PART 7 420011303900 - Revision Date 2.28.22...
  • Page 51 Connector Description HT Selv No. of Location 120 VAC LIVE INPUT POWER SUPPLY 120 VAC NEUTRAL INPUT HT (120V~) AC PROTECTIVE EARTH 120 VAC EXT. PUMP2 INPUT / 120VAC LINE DIV1 EXTERNAL PUMP 2 / 120 VAC NEUTRAL Hi-V DIVERTER VALVE (DHW) 120 VAC EXT.
  • Page 52 Connector Description HT Selv No. of Location +24V ROOM THERMOSTAT SELV (24V) ROOM THERMOSTAT 1 SIGNAL NTC SYSTEM CASCADE NTC SENSOR SIGNAL NTC TANK SELV (5V) BOILER NTC SENSOR SIGNAL CN24 OUTDOOR SENSOR OUTDOOR NTC SENSOR SIGNAL +24V ROOM THERMOSTAT 2 SELV (24V) ROOM THERMOSTAT 2 SIGNAL EBUS2 SIGNAL...

  • Page 53: Part 8 - Gas Connections

    PART 8 - GAS CONNECTIONS WARNING WARNING FIRE AND/OR EXPLOSION HAZARD Ensure the gas on which the boiler will operate is the same type specified on the rating plate (natural gas or LP gas). This boiler To avoid serious injury or death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional.

  • Page 54: Additional Precaution For Excess Flow Valve (Efv)

    To check inlet gas pressure: C. Additional Precaution for Excess Flow Valve (EFV) 1. Remove yellow cap from line pressure test point. See Figure 58. If an excess flow valve (EFV) is in the gas line, check the manufacturer’s 2. Unscrew “P in” screw. minimum and maximum flow capacity ratings.

  • Page 55: Part 9 - Controls

    PART 9 - CONTROLS A. Control and Display Overview AUTO COMFORT ON OFF MENU PAR CODE Display Icon Description Digits Indicating: • Boiler Status Figure 60 - Control and Display Overview • Temperature ( F) with bar level • Error Codes (ERROR) •...

  • Page 56: Ignition Procedure

    B. Ignition Procedure NOTE: When set to AUTO - Automatic Temperature Control (e.g., Outdoor Reset), the CH Temperature Setpoint is calculated in accordance with the type of automatic temperature control selected. The resulting setpoint Press the ON/OFF button on the control panel to power on the can be offset/shifted up or down by pressing the CH +/- buttons from boiler.

  • Page 57: Automatic Ch Temperature Control (Auto)

    2.2.4 = 1 via the technical menu. NOTICE In order for the boiler to detect changes in room temperature it is necessary to install an HTP Room Sensor. Other thermostats (not HTP) can only switch the boiler ON and OFF. -13 °F...

  • Page 58: Type Of Temperature Control

    4 = Indoor and Outdoor Temp. Reset - The boiler target temperature automatically adjusts between the Min and Max Temperature Settings (4.2.6 and 4.2.5), based upon the input temperatures provided by an optional HTP Room Sensor AND the included Outdoor Sensor (or Inter- net Weather via WiFi connection), in accordance with the following formula: Boiler Target Temp = Min Temp (4.2.6) + Slope of Outdoor Reset Curve (4.2.2) X {Room Sensor Influence (4.2.4) X [Room Setpoint - Room Temp] +...

  • Page 59: Parallel Shift Of Reset Curve

    H. Parallel Shift of Reset Curve 179 °F (e.g. Parameter 4.2.3 for Zone 1) When the Reset Curve results in a boiler target +25°F Increase parallel shift temperature that is too high or too low (i.e., heats the building too quickly or slowly), Parallel Shift can be used 0 °F Default Decrease parallel shift...

  • Page 60: Technical Menu - Access And Navigation

    J. Technical Menu - Access and Navigation To access advanced setup and troubleshooting parameters, it is necessary to enter the Technical Menu. The Technical Menu includes a number of Quick Access Menus which allow easy access to commonly used parameters. See K. Technical Menu - Menu Structure. The Quick Access Menu option, “MENU”, provides access to all parameters.

  • Page 61: Technical Menu - Menu Structure

    Only applicable with 0-10V / 4-20mA Free parameters Clip-In Board installed Reset Factory Settings Other - 1 Other - 2 11 HTP Zone Controller Parameters 0 General 1 Diagnostics 25 Cascade Manager Parameters 0 General 1 System Settings 2 Domestic Hot Water...

  • Page 62: Technical Menu - Complete Menu

    L. Technical Menu - Complete Menu Description Value ACCESS the Complete Menu Simultaneously press the “+” and “-” buttons for 5 seconds. T he display shows 222. 2. Press the “+” button to select 234 , the service code. 3. Press the OK button. The display shows the first “quick setting”...

  • Page 63: Domestic Hot Water

    Description Value 3 BOILER CH PARAMETERS - 1 Limited by the absolute values defined by parameters 2.3.3 and 1 Adjustable max CH power percentage 0 - 100 2.3.4, i.e., 0 = min power and 100 = max power. Absolute Max DHW power percentage 0 - 100 CANNOT BE MODIFIED RESERVED FOR TECHNICAL...

  • Page 64: Test & Utilities

    Description Value ELU WBN = Activated when the boiler is connected to a tank by an 8 Antilegionella frequency 24 - 720 (Hours), or 30 days 30 days NTC sensor. (Parameter 228 = 1) Only to test components 6 BOILER MANUAL SETTINGS 0 Manual mode activation 0 = OFF, 1 = ON 1 Boiler pump control...

  • Page 65: Zone1 Parameters

    2.10.7 = 1. 4 ZONE 1 PARAMETERS 0 ZONE 1 TEMPERATURE SETTINGS 0 Temperature Day 50 - 86 °F Only applicable when using an HTP room sensor 1 Temperature Night 32 - 86 °F 68 - 179 °F Parameter 4.2.0 = 1 2 Zone Fixed Temperature 68 - 179 °F...
  • Page 66 Adjusts the influence of room temperature on target boiler temperature - a higher setting causes a greater increase to the boiler target temperature as the indoor temperature drops below room setpoint. Only applicable when using an optional HTP Room Sensor and when 4.2.1 = 2 or 4.

  • Page 67: Setpoint

    Adjusts the influence of room temperature on target boiler temperature - a higher setting causes a greater increase to the boiler target temperature as the indoor temperature drops below room setpoint. Only applicable when using an optional HTP Room Sensor and when 5.2.1 = 2 or 4.

  • Page 68: Z3 Diagnostics

    Adjusts the influence of room temperature on target boiler temperature - a higher setting causes a greater increase to the boiler target temperature as the indoor temperature drops below room setpoint. Only applicable when using an optional HTP Room Sensor and when 6.2.1 = 2 or 4.

  • Page 69: Service

    Description Value 5 Outdoor Temperature (in °F) Only with outdoor sensor connected 4 DHW TANK TEMPERATURE (ONLY ACTIVE WITH CONNECTED NTC TANK SENSOR) - Read Only Only with NTC tank sensor 0 Displays current tank temperature (in °F) connected 5 SERVICE Months to next maintenance 0 - 60 (months) If enabled (8.5.1 = 1), a notification is made on the display (and via the Tele-diagnostic Service, if applicable), warning that it is...

  • Page 70: Part 10 - Start-Up Preparation

    PART 10 - START-UP PREPARATION B. Check for Gas Leaks WARNING WARNING Thoroughly clean and flush any system that has used glycol before installing the boiler. Provide the customer with a material safety Before starting the boiler, and during initial operation, smell near data sheet (MSDS) on the fluid used.

  • Page 71: System Water Fill, Purge, And Test

    If the condensate outlet on the boiler is lower than the drain, you WARNING 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 Ensure the boiler is full of water before firing the burner.

  • Page 72: Part 11 - Start-Up

    PART 11 - START-UP WARNING d. The purge function can be accessed at any time by pressing AUTO for five (5) seconds. Press AUTO twice to exit. NOTE: It is recommended to run through the full initial purge FOR YOUR OWN SAFETY READ BEFORE OPERATING cycle at install.
  • Page 73 WARNING Make sure the calibrated combustion analyzer is set to the appropriate gas type. Failure to do so could result in serious personal injury or death. It is required to use a calibrated combustion analyzer to verify final adjustment according to the combustion chart (Table 29). Failure to do so could result in serious personal injury or death.

  • Page 74: Checking Combustion Parameters

    D. Converting the Appliance from Natural Gas to Propane Operation HTP boilers are factory set to operate on Natural Gas. BEFORE OPERATING ON PROPANE the boiler must be converted to Propane using the included conversion kit specific to the boiler model.

  • Page 75: Part 12 - Installation Checklist

    PART 12 - INSTALLATION CHECKLIST Before Installing Note Is there enough space to ensure proper installation? Does installation location allow for proper service clearances? Are water and gas lines properly sized and set at proper pressures for the installation? Is boiler location as near the exhaust vent / intake pipe terminations as possible? Have combustible materials been cleared from the installation location? Is there a drain close to the boiler? Water Piping...

  • Page 76: Part 13 - Troubleshooting

    Wiring Note Has the power and control been wired per boiler wiring diagram, this manual? Is the main electrical connection polarity within boiler requirements? Does the power supply voltage agree with the boiler rating plate? 120V AC? Start-Up, Adjust, and Test Note Has the boiler been started? If necessary, has the boiler gas valve been adjusted?

  • Page 77: Boiler Error Codes

    B. Boiler Error Codes Display Possible cause Error Error Error Description Possible Remedies based on priority Type code CH Circuit Reset the error by tapping the reset button Air in the system Ensure boiler is free of air and pressurized to at least 20PSI Return filter plugged Ensure return filter in the boiler (if equipped) is clear Failed internal circulator/...
  • Page 78 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Reset the error by tapping the reset button. Air in the system Ensure boiler is free of air and pressurized to at least 20PSI. If the problem occurs during heating and hot water demands, Failed internal circulator/ ensure return filter is clear, and the internal pump is operating internal circulator not...
  • Page 79 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Blocking Control versions prior to Reset the error by tapping the reset button. Check menu 8.5.5. if Controller Software problem (Manual 1 07 00.85.00 the software version is 00.44.03 or 00.44.01 replace the PCB. Reset) Raise the system pressure, with the boiler and heating circulators Water Pressure too low...
  • Page 80 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code If not using a floor sensor set parameter 223 is set to 0. Incorrect setting If parameter 223 is set to 1 and a floor safety thermostat is present reduce the CH set-point.
  • Page 81 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Blocking DHW In probe open circuit Perform a factory reset using menu 2.8.0. (Auto 2 05 Reset) Inspect wiring from the tank sensor to the boiler for water dama- Tank sensor wiring damaged ge shorts or physical damage.
  • Page 82 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Normal operation Reset Turn the power off and on then tap the reset button reset the Too many (> 5) resets in 15 button pushed more that 5 Blocking error.

  • Page 83: Other

    Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Detected accessory wired to Restore the factory default menu 2.8.0. If the error persist replace Warning 4 30 BUS connection the PCB. Detected accessory wired to Restore the factory default menu 2.8.0.
  • Page 84 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Verify the gas pressure to the appliance while in operation. Ensure pressure is between 3.5 and 10.5” WC (Natural Gas), or Improper gas pressure between 8 and 13” WC for boilers converted to Propane (LP) operation.
  • Page 85 Display Possible cause Error Error Error Description Possible Remedies based on priority Type code Inspect the wires from the exhaust sensor to the boiler con- Faulty wiring trol. Disconnect and reconnect each connection. Dry or clean "Exhaust Temperature Blocking any wet or corroded wires. sensor circuit open or (Auto 6 05...
  • Page 86 General Possible cause Symptoms Possible Remedies symptoms based on priority "The gas pressure is excessively high or low. Test the static gas pressure it must be between 4""-9"" for natural gas and 8""-12"" for propane. Improper Gas pressure Test the gas pressure during burner operation. If the pressure dips below the minimum or goes above the maximum check the gas regulator.
  • Page 87 General Possible cause Symptoms Possible Remedies symptoms based on priority Verify that the boiler call for heat is enabled, and indicated on No thermostat demand the screen of the boiler, the call for heat should be connected to TT1, and or TT2 on the low voltage terminal strip Boiler is in error or lockout, see troubleshooting for the Error/ lockout specific error.
  • Page 88 Repeated Lockout Error conditions could indicate a serious error with the boiler or installation. Failure to contact a qualified service technician to troubleshoot the error could result in substantial property damage, serious personal injury, or death. *Error is resettable remotely via HTP Tele-Diagnostic Service, HTP Remote Contractor. PART 13...

  • Page 89: Part 14 - Maintenance

    PART 14 - MAINTENANCE Check Exhaust Vent and Intake Pipe Terminations DANGER Verify that the boiler exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the exhaust The boiler must be inspected and serviced annually, preferably at vent or intake pipe openings.

  • Page 90: Maintenance Only To Be Performed By A Qualified Service Technician

    C. Maintenance Only to be Performed by a Check Water and Gas Piping 1. Remove the boiler cover and perform a gas leak inspection Qualified Service Technician following Operating Instructions on page 2 of this manual. If Removing the Cabinet Cover and Inspecting the Boiler gas odor or leak is detected, follow procedures on page 2.

  • Page 91: Other

    2. Unscrew the two (2) nuts and remove the gas pipe. WARNING Water drained from the boiler could be scalding hot. Wait for the boiler to cool before draining water, and take precautions when draining water. Failure to do so could result in property damage, personal injury, or death.
  • Page 92 WARNING Protect the back wall insulation from water before performing any cleaning. Failure to do so could result in damage to the insulation, improper boiler operation, personal injury, or death. Do not use solvents to clean any of the boiler components. The components could be damaged, resulting in unreliable or unsafe boiler operation, substantial property damage, severe personal injury, or death.

  • Page 93: Replacing Components

    5. Clean the filter with a toothbrush and clean running water. WARNING 6. Reinstall the DHW inlet filter. 7. Refill the DHW circuit following the filling and purging instructions Do not install the condensate assembly if a component is lost or in this manual.
  • Page 94 Replacing the Fan Replacing the Main Heat Exchanger 1. Remove the silencer and gas line as described in Cleaning the Heat 1. Drain the boiler and remove the combustion assembly as described Exchanger Combustion Chamber. in Cleaning the Heat Exchanger Combustion Chamber. 2.

  • Page 95: After Maintenance Is Complete

    8. Remove the six (6) fixing screws from the heat exchanger. If 4. Remove the gas valve. accessing the screws on the left part of the heat exchanger is 5. Reinstall the new gas valve in reverse order. difficult remove the lateral panel. 6.

  • Page 96: Part 15 - Maintenance Report

    PART 15 - MAINTENANCE REPORT The boiler requires minimal periodic maintenance under normal CAUTION conditions. However, in unusually dirty or dusty conditions, periodic vacuuming of the cover to maintain visibility of the display and In unusually dirty or dusty conditions, care must be taken to keep indicators is recommended.
  • Page 97 INSPECTION ACTIVITIES DATE LAST COMPLETED 1 st YEAR 2 nd YEAR 4 th YEAR* 3 rd YEAR PIPING Near boiler piping Check boiler and system piping for any sign of leakage. Leaking pipes could cause property damage. Make sure all piping is properly supported. See User’s Information manual for instructions.

  • Page 98: Part 16 - Shutdown

    PART 16 - SHUTDOWN A. Shutdown Procedure Supply/Return Temperature Sensors Turn the boiler off at the on/off power switch. Wait for the combustion Outdoor Sensor Indirect Sensor blower to stop, so all latent combustion gases are purged from the DHW Outlet Sensor system.

  • Page 99: Maintenance Notes

    Maintenance Notes 420011303900 - Revision Date 2.28.22...
  • Page 100 Maintenance Notes 420011303900 - Revision Date 2.28.22...

  • Page 102: 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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