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HTP Elite XL ELX-400 Series Installation, Start-Up, Maintenance, Parts, Warranty

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Installation
Start-Up
Maintenance
Parts
Warranty
ELX-400 / 500 / 650 / 800 / 1000 / 1500 / 2000
Models*
*"VWH" Denotes Volume Water Heater Models,
"N" Denotes Natural Gas, "LP" Denotes Propane,
and "F" Denotes Floor Mount Models
Example Model: ELX-1000FVWHN
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.
HTP 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.
Volume Water Heaters
DANGER
!
WARNING
!
NOTICE
New Bedford, MA 02745
Elite XL®
Heat Exchanger Bears the ASME "H"
Stamp
lp-701 Rev. 000 Rel. 003 Date 6.29.20
www.htproducts.com

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Summary of Contents for HTP Elite XL ELX-400 Series

  • Page 1 California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. NOTICE HTP 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.
  • 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: Notice

    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

    Part 5 - Venting NOTICE A. General B. Approved Materials for Exhaust Vent and Intake Pipe The CSD-1 ASME Code, Section CW-400 requires that hot water C. Additional Requirements for Installation in Canada heating and supply boilers have a) a UL 353 temperature control D.
  • Page 5 Failure to follow this information could result in property damage, A. Blocking severe personal injury, or death. B. Fault (Lockout) Altering any HTP VWH with parts not manufactured by HTP WILL C. User Interface Display INSTANTLY VOID the VWH warranty and could result in property Part 14 - Maintenance damage, personal injury, or death.

  • Page 6: Water Temperature Adjustment

    WARNING NEVER use any toxic chemical, including automotive, standard glycol antifreeze, or ethylene glycol made for hydronic (non-potable) systems. These chemicals can attack gaskets and seals in water systems, are poisonous if consumed, and can cause personal injury or death. F.

  • Page 7: Part 2 - Before You Start

    Failure to connect the VWH to a storage tank will result in property damage and/or premature VWH failure. Damages resulting from incorrect installation or from use of products not approved by HTP ARE NOT covered by warranty. Contact HTP for Available Storage Tanks...

  • Page 8: What's In The Box

    NOTE: First Hour Rating can be increased by using an external mixing valve and increasing tank setpoint temperature. Example: If installation requires 120 F from mixing valve, set the tank at 140 F to increase First Hour Rating. First Hour Rating (FHR) = __Total Input Rate X Thermal Efficiency _ + .75 X Total Storage (VWH Outlet Temp - Inlet Temp) X 8.31 Example: 2 500VWHs = Total Output = 1,000,000 BTU...

  • Page 9: Optional Equipment

    HTP Link to properly take factors such as VWH venting, piping, condensate HTP Link allows the installer to connect the VWH to WiFi, providing removal, and wiring into account before installation could result in the user / installer with tools to remotely monitor the system, wasted time, money, and possible property damage and personal optimize efficiency, and aid in troubleshooting.

  • Page 10: Flooring

    4. Gas control system components must be protected from dripping WARNING water during operation and service. This VWH must be installed upright in the vertical position as 5. If the VWH is to replace an existing VWH, check for and correct any described in this manual.

  • Page 11: Clearances For Service Access

    D. Clearances for Service Access WARNING The space must be provided with combustion / ventilation air openings correctly sized for all other appliances located in the same space as the VWH. The VWH cover must be securely fastened to prevent the VWH from drawing air from the VWH room. This is particularly important if the VWH is in a room with other appliances.

  • Page 12: Residential Garage And Closet Installations

    Be sure to locate the VWH such that the exhaust vent and intake E. Residential Garage and Closet Installations piping can be routed through the building and properly terminated. CAUTION Different vent terminals can be used to simplify and eliminate multiple penetrations in the building structure (see Optional Check with your local Authority Having Jurisdiction for requirements Equipment in Venting Section).

  • Page 13: Carbon Monoxide Detectors

    G. Carbon Monoxide Detectors In the Commonwealth of Massachusetts and As Required by State and Local Codes: Installation of Carbon Monoxide Detectors: At the time of installation or replacement of the vented gas fueled appliance, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas appliance is installed, unless the appliance is located in a detached, uninhabitable structure separate from the...

  • Page 14: Removing An Appliance From A Common Vent System

    4. Place in operation the appliance being inspected. Follow the WARNING lighting instructions. Adjust the thermostat so the appliance will operate continuously. Ensure that the intake air will not contain any of the contaminants in 5. Test for spillage at the draft hood relief opening after 5 minutes of Table 1.
  • Page 15 Closed loop water must be free of corrosive chemicals, sand, dirt, and other contaminates. It is up to the installer to ensure the water does not contain corrosive chemicals or elements that can damage the heat exchanger. If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed professional.
  • Page 16 ELX-400-1000 WATER SUPPLY WATER RETURN AIR INTAKE EXHAUST CONDENSATE 2" CLEANOUT ELX-1500-2000 WATER SUPPLY WATER RETURN AIR INTAKE EXHAUST CONDENSATE 2" CLEANOUT LP-666-P 04/06/20 MODEL # ELX400-500 40.7 41.0 26.0 17.9 35.0 10.1 10.5 12.6 16.1 20.5 22.0 25.8 35.0 2.8* ELX650-1000 56.5...

  • Page 17: Technical Specifications

    K. Technical Specifications Model 1000 1500 2000 Installation Indoor, Floor Standing, Fully Condensing 100,000 / 150,000 / 200,000 / Minimum / Maximum Input (Btu/Hr) 39,900 / 399,000 50,000 / 500,000 65,000 / 650,000 80,000 / 800,000 1,000,000 1,500,000 2,000,000 Heating Capacity (MBH) 1,470 1,960 Flue System...

  • Page 18: Part 4 - Piping

    HTP offers 60/80/119/175 gallon storage tanks in either stainless removed and inspected. Do not attempt to conduct an steel or glass-lined construction.

  • Page 19: Backflow Preventer

    C. Backflow Preventer F. Scalding Use a backflow preventer specifically designed for hot water heater This deliver installations. This valve should be installed on the cold water fill scalding water at any faucet supply line per local codes. in the system. Be careful whenever using hot water D.
  • Page 20 Model Ft / Hd Ft / Hd Ft / Hd 12.0 11.4 11.5 1000 14.0 1500 2000 11.5 Table 10 - Pressure Drop at Various Temperature Rises The VWH heat exchanger does have a pressure drop which must be considered in system design. ELX-400 ELX-500 ELX-650...

  • Page 21: Check / Control Water Chemistry

    H. Check / Control Water Chemistry Chemical imbalance of the water supply may affect efficiency and Maximum Maximum cause severe damage to the appliance and associated equipment. Contaminant Allowable Contaminant Allowable Water quality must be professionally analyzed to determine Level Level whether it is necessary to treat the water.

  • Page 22: Applications

    J. Applications Figure 11 - Piping Legend Figure 12 - VWH with Storage Tank FIGURE NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. 2. VWH circulator must be rated for open loop application.
  • Page 23 Figure 14 - Two VWHs with Storage Tank Figure 15 - Three VWHs with Two Storage Tanks FIGURE NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. 2.

  • Page 24: Part 5 - Venting

    Part 5 - Venting DANGER The VWH 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 25: 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 ANSI/ASTM D2661 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 26: 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 Intake Pipe Terminal Exhaust Vent Terminal Area Where Intake Terminal Is Not Permitted Figure 16 - 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 27: Exhaust Vent And Intake Pipe Sizing

    primed, and cemented. Use only cement and primer approved for use E. Exhaust Vent and Intake Pipe Sizing with the pipe material. Cement must conform to ASTM D2564 for PVC 1. The exhaust vent and intake pipe size is 4”, 6”, or 8”, depending on and ASTM F493 for CPVC pipe.

  • Page 28: Applications

    10. Due to potential moisture build-up, sidewall venting may not be d. The labels shall be black lettering that: the preferred venting option. To save time and cost, carefully consider i. Indicates that the piping is used for ventilation, make-up, venting installation and location.
  • Page 29 Two Pipe Sidewall Venting EXTERIOR WALL with Intake (Elbow) and Coupling (Exhaust) 1" MIN. 400 - 1000 Models ONLY 12" MIN. EXHAUST Insert Intake/Exhaust Screen into Coupling MAINTAIN 12" MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE, WHICHEVER IS GREATER (TYP) INTAKE LP-505-A...

  • Page 30: Power Venting, Room And Indoor Combustion Ventilation Requirements

    2. Power Venting, Room and Indoor Combustion Ventilation Combustion air supply must be completely free of any flammable Requirements vapors that may ignite, or chemical fumes which may be corrosive to the VWH. See Table 1 for a list of combustion air contaminants. These When using an indoor combustion air installation, the mechanical chemicals, when burned, form acids which quickly attack the stainless room MUST be provided with properly sized openings, and/or be...

  • Page 31: Part 6 - Condensate Removal

    Condensate from the VWH 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 # 7350P-611). The neutralizer kit connects to the drain system and contains limestone chips that neutralize the pH level of the condensate.

  • Page 32: Part 7 - Wiring - 400 - 1500 Models

    CONDENSATE NEUTRALIZER CONDENSATE NEUTRALIZER WITHOUT PUMP WITH PUMP PIPE HANGER PIPE HANGER ASSEMBLIES ASSEMBLIES FOR SUPPORT FOR SUPPORT SWEAT PVC TEE OPEN TO ATMOSPHERE (TO PREVENT VACUUM) SWEAT PVC TEE OPEN TO FLOOR DRAIN ATMOSPHERE (TO PREVENT VACUUM) CONDENSATE CONDENSATE PUMP NEUTRALIZER HORIZONTAL LINES...

  • Page 33: Line Voltage Wiring For Standard Vwh

    1. A Cascade Bus Termination Plug has been installed on the operation and the circuit between the common and ALARM NO is open during normal operation. HTP offers an Alarm System Kit (part customer connection board # 7350P-602). of this VWH. The purpose of this plug is to stabilize E.

  • Page 34: Cascade Master Pump And Sensor Wiring

    either one or both in any order to connect the cable. 4. Connect the Neutral of the externally provided 120VAC to the If you have connected the VWHs to each other properly, there will be NEUTRAL input of the pump. no open communication connection ports.
  • Page 35 GREEN (GROUND) 400-1500 HIGH VOLTAGE CUSTOMER CONNECTION BOARD POWER WHITE (NEUTRAL) SWITCH VWH SINGLE, CASCADE MASTER BLACK (HOT) AND FOLLOWER BLOWER LINE VOLTAGE IN 120VAC BLK/BLU BLACK SWITCH 120V LINE 120V NEUT 120V GND PUMP 5V DC (USB) PUMP RELAY PUMP POWER WIFI POWER...
  • Page 36 ELX-400-1500 WIRING DIAGRAM 120 VAC LINE J7-3 NEUTRAL P1-1 J7-2 P1-2 POWER SWITCH HMI DISPLAY P1-3 DUAL FLUE SENSOR X11-1 X11-4 X11-2 X5-15 PROTECTED BY X5-16 AN INTERNAL 6.3 AMP FUSE X6-6 X6-10 +24V X6-7 LWCO DUAL SUPPLY SENSOR PROBE HALL X7-3 X6-15...

  • Page 37: Part 8 - Wiring - 2000 Models

    ALARM COM The control used in the VWH is capable of directly controlling and NO is open during normal operation. HTP offers an Alarm System 2 pumps in standard mode and 3 pumps when configured as a Kit (part # 7350P-602).

  • Page 38: System / Pipe Sensor

    Avoid running communication cables parallel and Failure to use the correct sensor may result in tank temperature close to or against high voltage (120 volt or greater) wiring. HTP being either above or below set point, and could result in decreased...

  • Page 39: Variable Speed Pumping

    alarm contacts are rated 5 amps at 120 VAC. point temperature or firing rate depending on the setting of Function To connect an alarm device that should be powered on during a 17 in the Installer Menu. See this manual for details on the setting of VWH lockout condition, connect the power for the device to the Functions 16 and 17 for this option.
  • Page 40 2000 MODEL HIGH VOLTAGE CUSTOMER CONNECTION BOARD PUMP SINGLE VWH, CASCADE MASTER LINE IN AND FOLLOWER EXTERNAL RELAY LINE IN BLUE (HOT) LINE RED (HOT) VOLTAGE IN 208VAC 3 PH BLACK (HOT) WHITE (NEUT) GREEN (GRND) ALARM LP-701-F 08/16/19 Figure 34 - Cascade Master and Single VWH High Voltage Wiring - 2000 Model Notes for Dry Contact Wiring: •...
  • Page 41 Figure 36 - Cascade Termination Plug Detail ELX 400-2.0 LOW VOLTAGE ELX 400-2.0 LOW VOLTAGE CUSTOMER CONNECTION BOARD CUSTOMER CONNECTION BOARD VWH SINGLE AND CASCADE MASTER VWH CASCADE FOLLOWER CASCADE BUS CASCADE BUS CASCADE BUS CASCADE BUS TERMINATION PLUG TERMINATION PLUG INSTALLED HERE INSTALLED HERE IN FINAL CASCADED BOILER...
  • Page 42 Figure 39 - Internal Connection Diagram - 2000 Models lp-701 Rev. 000 Rel. 003 Date 6.29.20...

  • Page 43: Part 9 - Gas Connections

    WARNING Part 9 - Gas Connections WARNING Do not use Teflon tape on gas line pipe thread. Use a pipe compound rated for use with natural gases. Apply sparingly on male pipe ends, leaving the two end threads bare and flow unobstructed. Failure to Failure to follow all precautions could result in fire, explosion, follow these instructions could result in gas leakage or blockage, and severe injury, or death.

  • Page 44: Check Inlet Gas Pressure

    Natural Gas Supply Piping Capacity Chart - Schedule 40 metallic pipe size in nominal inches (0.6 Specific gravity gas; 0.5” WC pressure drop) Capacity in Cubic Ft. Hr. by Length of Pipe in Straight Feet Pipe Size (Inches) 1 1/4 1390 1 1/2 2090...

  • Page 45: Vwh Gas Valve

    Do not do a gas conversion on this VWH without an officially Adjustments to the throttle screw or offset may only be made by approved conversion kit and instructions supplied by HTP. Failure a qualified gas technician using a calibrated combustion analyzer to use a conversion kit when converting the VWH to fire on Natural capable of measuring CO2 and CO.

  • Page 46: Part 10 - Start-Up Preparation

    (40 CFR Part 143.3) as shown in the table below. HTP (554200). This pump is equipped with two leads that can be If the water contains contaminants higher than outlined by the EPA,...

  • Page 47: Final Checks Before Starting Vwh

    system design and not require any adjustment at all. E. Final Checks Before Starting VWH 1. Read Startup Procedures within this manual for proper steps to start VWH. (See Startup Report to record steps for future reference.) 2. Verify the VWH and system are full of water and all system components are correctly set for operation.

  • Page 48: Navigation Of The Touch Screen Display

    HTP Logo and Home Tapping the HTP Logo or Home will return the installer / user to the Home Screen. The Home Screen allows the installer / user quick access to appliance internal operating temperatures, external temperature sensor readings, current CH and DHW setpoints and actual temperatures, appliance modulation percentage, operation details, and a Reset key.

  • Page 49: Single Vwh Initial Start-Up And Operation

    sensor is equal to the set point temperature. The master VWH control C. Single VWH Initial Start-Up and Operation will extinguish all VWHs that may be lit. If the demand decreases, the When power is applied to the VWH, the control first completes a firing rate command and amount of VWHs lit will decrease exactly power-up systems check and boots up the display.

  • Page 50: Operating Instructions

    This establishes the VWH as a follower in a cascaded system and enables data to be transferred as needed for the system to function at full capability. e. Ensure Installer #23, Cascade Mode, is set to the number of VWHs in the system (ex: 0 for OFF, 6 for a 6 VWH system). f.
  • Page 51 Setting Description Input 1 Allows the user to set the date. See below for setting the date. Date Settings Input 2 Allows the user to set the time. See below for setting the time. Time Settings Input 3 Toggle the switch near the F or C to switch temperature measurement from Fahrenheit to Celsius (Default is Temperature Display...

  • Page 52: Programming Installer Settings

    I. Programming Installer Settings Installer Setting Program Access NOTE: Programming the VWH control is not possible when the VWH is firing. Make sure any input which can create a demand on the VWH, such as the tank thermostat, is turned off, so the VWH will remain idle to allow programming. NOTE: To change Installer Settings enter Access Code 925 when prompted.
  • Page 53 Allows the user to set freeze protection on the VWH. Factory Default: ON (Range: ON / OFF). DHW Modulation Mode Not applicable on this product. Allows for a non HTP VWH to be controlled when the cascade output has risen above the percent Extra Boiler Mode of the cascade firing rate set in this parameter.
  • Page 54 Detail The Modbus speed (communication speed) can be set on the control display to either 9600 or 19200 baud. All HTP appliances, as well as any other device on the same bus and the Modbus/ Modbus Speed BACnet master, must have the same baud rate setting. Select the highest baud rate that offers the most reliable communication performance over the bus.

  • Page 55: Resetting The Maintenance Schedule

    J. Resetting the Maintenance Schedule It is highly recommended to call for service when the Home Screen center pane turns yellow on the display. After service is performed, reset the schedule for the next required service by using the following steps. Press Installer.

  • Page 56: Part 12 - Vwh Monitoring

    Part 12 - VWH Monitoring A. Status Screens The VWH control has the ability to review system status. To access the Status screens, tap Status in the display Navigation Bar. Tap NEXT or PREVIOUS to swap between the screens. Tap Home in the display Navigation Bar to exit the Status screens. Status Screen 1 Status Fan Speed Settings...
  • Page 57 F1 / F2 Flue B). Displays the actual temperature measured by the tank or return sensor (HTP 7250P-325). If a mechanical Indirect aquastat is used in place of the recommended sensor, it will display “N/C” if the aquastat is open because the DHW tank is satisfied.
  • Page 58 Status Inp uts & Outputs Status Screen 2 Inputs Internal External Room Thermostat CH Enable Ch Boost Outdoor Temperature Lock: 205 F 0-10V In 33 F 90 F Safeties Water Closed Supply Temperature Closed Block Vent 112 F Closed Block3 Lock: 210 F Wat / Flue Closed/Closed...

  • Page 59: History Screens

    Outputs Table Display Description Gas Valve Displays whether the gas valve is on or off. Spark Displays whether the spark is on or off. Ionization Displays the current flame ionization current. Pump CH Displays whether the CH Pump is on or off. Pump DHW Displays whether the DHW Pump is on or off.
  • Page 60 Appliance History Table Display Description Control Displays control details, including the Comfort and Safety firmware revisions programmed into the control. Parameters Displays the programmed appliance model number parameter set. Serial Number Displays the appliance serial number. Production Date Displays the appliance production date. Programming Date Displays when the appliance was last programmed.

  • Page 61: Graphics Screen

    C. Graphics Screen Tap Graphics in the display Navigation Bar to open the Graphics function. The Graphics function allows the installer / user to select, record, and view real time system analytics. This function helps the installer / user fine tune system operation and aids in troubleshooting. Graphics Graphics Screen Supply...
  • Page 62 Sensor code are shown here. The Cascade Mode rotation hours are shown here. The operating percentages of connected appliances is shown towards the bottom of the screen, along with whether the SYS, DHW, or CH pumps are enabled and whether the system is meeting a CH or DHW demand.

  • Page 63: Part 13 - Troubleshooting

    Part 13 - Troubleshooting Unresponsive Screen - Ensure the screen is not installed too tightly into the housing, as the screen may be recording a continuous touch at the edges. Turn the VWH power off at the main power supply and loosen the screen slightly by backing out the nuts behind the housing. If the problem persists calibrate the screen.
  • Page 64 Code Message Description Possible Remedy Disconnect the system sensor from the wiring and measure its E03 indicates a problem with the system sensor resistance. Compare the measured resistance to the table in this circuit. The circuit could be open or shorted. manual to see if it corresponds to the temperature of the sensor.
  • Page 65 Code Message Description Possible Remedy F05 indicates the VWH supply temperature is excessive. When accompanied by the red center pane of the Home screen and the displayed phrase Lockout: F05 Supply Maximum, this Blocking: code indicates the supply sensor temperature Supply has exceeded 210 F and a serious safety issue...
  • Page 66 Code Message Description Possible Remedy 1. Look into window. If there is flame, turn the gas off to the unit at the service valve and replace the gas valve. There is flame during a call for heat, but prior 2. If the flame signal on the status menu is greater than 1.2uA to the ignition sequence.
  • Page 67 Code Message Description Possible Remedy 1. If an indicator light is illuminated, investigate the source of the code for that particular switch. The following switches are optional equipment 2. With VWH in service mode, measure the gas pressure in the supply that may be installed on VWH.
  • Page 68 Code Message Description Possible Remedy TT indicates there is a demand for heat on the VWH, the pump is powered on, and the supply Blocking: sensor temperature is too high for the VWH to This message will stay present until the water temperature measured Supply ignite.

  • Page 69: Part 14 - Maintenance

    Indirect Sensor Flue Temp. Sensor Outdoor Sensor (7250P-319) Return Sensor (7100P-004) Supply Sensor (7700P-073) (7350P-325) (7550P-147) Temperature ( Resistance (ohms) Temperature ( Resistance (ohms) 171800 32624 129800 25381 98930 19897 76020 15711 58880 12493 45950 10000 36130 8056 28600 6530 22800 5324 18300...
  • Page 70 WARNING Do not use solvents to clean any of the burner components. The components could be damaged, resulting in unreliable or unsafe VWH operation, substantial property damage, severe personal injury, or death. 2. Spray the coils liberally with the FDA approved liquid lime scale remover.

  • Page 71: Part 15 - Shutdown

    0.31” Part 15 - Shutdown 400 - 1000 Model Igniter Detail (Gap from Burner Wall) A. Shutdown Procedure If the burner is not operating, disconnect the electrical supply. If the burner is operating, lower the set point value to 70 F and wait for the burner to shut off.

  • Page 72: Part 16 - Replacement Parts

    Part 16 - Replacement Parts ELX-400, 500 ONLY ITEM# PART# DESCRIPTION ITEM# PART# DESCRIPTION 7550P-447 GASKET - DISPLAY - 7" 7550P-215 COMBUSTION BLOWER w/GASKET, SCREWS (400) 7550P-209 COMBUSTION BLOWER w/GASKET, SCREWS (500) 7550P-060 TOUCH SCREEN BRACKET 7550P-210 COMBUSTION BLOWER w/GASKET, SCREWS (650-1000) 7500P-087 POWER SWITCH 7250P-478 SCREWS (400/500)- COMBUSTION BLOWER...
  • Page 73 LP-701-G 12/09/19 ITEM# PART# DESCRIPTION 7550P-278 PRESSURE RELIEF VALVE - 150 PSI 7250P-499 TEMPERATURE/PRESSURE GAUGE 6070P-009 DRAIN VALVE 7550P-147 FLUE TEMPERATURE SENSOR 7550P-148 RUBBER GROMMETT 7550P-226 CONDENSATE ASSEMBLY 7550P-222 HOSE - CONDENSATE 7250P-210 HOSE CLAMP (2) 7350P-063 SCREWS - #10 X 1/2" SELF TAPPING 7550P-225 GAS PIPING ASSY - 1"...
  • Page 74 ITEM# PART# DESCRIPTION 7550P-372 CLAMP - VENT ADAPTER 4" 7550P-373 CLAMP - VENT ADAPTER 6" 7550P-374 GASKET - VENT ADAPTER 4" 7550P-375 GASKET - VENT ADAPTER 6" 7550P-376 CERAMIC REFRACTORY (w/CLIP, SCREW) BACK OF MODULE 7550P-377 CERAMIC REFRACTORY KIT, BURNER DOOR (w/SCREW & CLIP) 7550P-378 BURNER DOOR (w/SCREWS, WASHERS, GASKET) 7550P-379...
  • Page 75 7550P-337 BOARD (1500) 7550P-442 AIR/GAS MIXER (2000) 7550P-309 AIR/GAS MIXER (1500) 7550P-998 HTP LINK WI-FI DONGLE KIT 6300P-072 GASKET - FLANGE TO VENTURI 7550P-140 SCREW- HEX HEAD M8X16, 6 PER (2000) 7550P-554 SCREW- HEX HEAD M8X14, 6 PER (1500) 7550P-162...
  • Page 76 LP-666-U 12/17/19 ITEM# PART# DESCRIPTION 7550P-531 8" INTAKE ADAPTER 7550P-137 SCREW - 10-32 X 1/2" LONG 7550P-072 VENT ADAPTER 7550P-052 HIGH VOLTAGE BOARD 1 8800P-108 CONTACTOR 7550P-119 COVER - HIGH VOLTAGE BOX 7550P-216 EXTERNAL SPARK TRANSFORMER 7550P-541 SPARK LEAD (NOT SHOWN) 7550P-085 BACK PANEL 7550P-150...
  • Page 77 LP-701-G 12/17/19 ITEM# ITEM# PART# PART# DESCRIPTION DESCRIPTION 7550P-192 GAS PIPE ASSEMBLY 7550P-192 GAS PIPE ASSEMBLY 7550P-073 7550P-073 WATER SUPPLY ASSEMBLY, S.S. (2000) WATER SUPPLY ASSEMBLY, S.S. (2000) 7550P-551 7550P-551 WATER SUPPLY ASSEMBLY, S.S. (1500) WATER SUPPLY ASSEMBLY, S.S. (1500) 7550P-074 WATER RETURN ASSEMBLY, S.S.
  • Page 78 ITEM# PART # DESCRIPTION 7550P-410 GASKET - VENT ADAPTER 7550P-411 CERAMIC REFRACTORY - BACK OF MODULE 7550P-412 CERAMIC REFRACTORY KIT - BURNER DOOR 7550P-413 SIGHT GLASS (w/SCREWS) 7550P-414 BURNER DOOR (w/SCREWS, WASHERS) 7550P-415 SCREWS, WASHERS - BURNER DOOR 7550P-416 SPARK ELECTRODE (w/SCREWS, GASKET) 7550P-417 FLAME RECTIFICATION PROBE (w/SCREWS, GASKET) 7550P-580...

  • Page 79: Part 17 - Installation Checklist

    Part 17 - 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. Verify near VWH piping is properly supported. Percentage of glycol in system (0 - 50%) Leak test using locally approved methods (con- sult jurisdictional code book).
  • Page 80 Inspection Activities Date Last Completed Piping 1st Year 2nd Year 3rd Year 4th Year* Check VWH and system piping for any sign of leakage; make sure pipes Near VWH piping are properly supported. Check condition of all vent pipes and joints. Ensure the vent piping Vent terminations are free of obstructions and blockages.

  • Page 81: Vwh Limited Warranty

    Five year warranty to assure your complete satisfaction. and keep it running at optimum efficiency. 4. Maintain all related system components in good operating HTP warrants each VWH and its parts to be free from defects in materials condition. and workmanship according to the following terms, conditions, 5.
  • Page 82 HTP Warranty Supervisor approval. During the claims process a product that must be replaced will be given a designation of either a) field scrap, or b) return to HTP. If the product must be returned to HTP, the returned product must arrive at HTP within thirty (30) days of the date of our request to return the product.

  • Page 83: Maintenance Notes

    Maintenance Notes lp-701 Rev. 000 Rel. 003 Date 6.29.20...

  • Page 84: 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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