HTP Elite Premier EP-220 VWH Manual

HTP Elite Premier EP-220 VWH Manual

Volume water heaters
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Table of Contents

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Installation
Start-Up
Maintenance
Parts
Warranty
EP-220 / 299 / 301 / 399 VWH Models*
* "N" Denotes Natural Gas Operation
"LP" Denotes Propane Gas Operation
"VWH" Denotes Hot Water Supply Boiler
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.
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.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
272 Duchaine Blvd.
Elite Premier
Volume Water Heaters
New Bedford, MA 02745
Heat Exchanger Bears the ASME "H" Stamp
www.htproducts.com
LP-551 Rev. 000 Rel. 021 Date 4.2.21

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Summary of Contents for HTP Elite Premier EP-220 VWH

  • 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. HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature.
  • Page 2 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. NOTE: HTP reserves the right to modify product technical specifications WARNING indicates a potentially hazardous situation which, if not and components without prior notice.
  • Page 4: Table Of Contents

    Part 5 - Venting 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: Part 1 - General Safety Information

    Part 14 - Installation Checklist WARNING Part 15 - Maintenance Report Part 16 - Replacement Parts This VWH must be installed by a licensed plumber, licensed gas fitter, Limited Warranty and/or professional service technician. Improper installation and/ Maintenance Notes or operation can cause a potentially hazardous situation, which, if Customer Installation Record Form not avoided, could result in serious injury or death, and will void the warranty.
  • Page 6: Improper Combustion

    E. Water Chemistry Requirements* DO NOT alter or modify the appliance or appliance controls. Altering any HTP VWH with parts not manufactured by HTP WILL INSTANTLY VOID the VWH warranty and could result in property damage, Chemical imbalance of the water supply may affect efficiency and personal injury, or death.
  • Page 7: Water Temperature Adjustment

    2001 ft 3000 ft 4000 ft 4500 ft 5000 ft Elevations NOTE: HTP DOES NOT WARRANT THE APPLIANCE AGAINST FREEZE- (610 m) (914 m) (1219 m) (1372 m) (1524 m) RELATED DAMAGE. In Canada...
  • Page 8: Part 2 - Before You Start

    (80 gallons for these VWH models) 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.
  • Page 9: What's In The Box

    Spark Ignition The burner is ignited by applying high voltage through the system spark electrode. The spark from the electrode ignites mixed gas off UNCRATING THE VWH - Any claims for damage or shortage in of the burner. shipment must be filed immediately against the transportation Dual Supply Water Temperature Sensor / High Limit Water ECO company by the consignee.
  • Page 10: Optional Equipment

    C. Optional Equipment This VWH is heavy. Take precautions when moving the VWH into Optional equipment available from HTP (and Part #): its installation location to avoid tipping, bumping, or dropping it. • Wall Mount Bracket (7450P-211) Failure to take such precautions may result in property damage, •...
  • Page 11: Flooring

    Always take future maintenance into consideration when locating Do not mount the VWH to a hollow wall. Mount to the studs only. the VWH. If the VWH is located in an installation location with Use extreme care not to drop the VWH or cause bodily injury while limited clearances, it may be necessary to remove the VWH lifting or mounting the VWH onto the optional wall mount bracket.
  • Page 12: Clearances For Service Access

    D. Clearances for Service Access E. Residential Garage and Closet Installations Check with your local Authority Having Jurisdiction for requirements when installing the VWH in a garage or closet. Please read the entire manual before attempting installation. Failure to properly take factors such as venting, piping, condensate removal, and wiring into account before installation could result in wasted time, money, and possible property damage and personal injury.
  • Page 13: Power Venting, Indoor Combustion Air In Confined Or Unconfined Space

    Be sure to locate the VWH such that the exhaust vent and intake In addition, the installing plumber or gas fitter shall observe that a hard piping can be routed through the building and properly terminated. wired carbon monoxide detector with an alarm and battery back-up is Different vent terminals can be used to simplify and eliminate installed on each additional level of the dwelling, building, or structure multiple penetrations in the building structure (see Optional...
  • Page 14 6. After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined, return doors, windows, exhaust fans, fireplace dampers, and any other gas burning appliances to their previous condition of use. 7.
  • Page 15: Technical Specifications

    K. Technical Specifications Model Installation Indoor, Floor Standing or Wall Mount (with Optional Kit), Fully Condensing Minimum / Maximum Input (Btu/Hr) 22,000 / 220,000 30,000 / 299,000 30,000 / 301,000 40,000 / 399,000 Heating Capacity (MBH) Flue System Category IV, Sealed Combustion Direct Vent, Power Vent Minimum Combined Vent Run 16 feet Maximum Combined Vent Run...
  • Page 16 Figure 4 - VWH Dimensions - NOTE: All Dimensions Are Approximate - VWH in Model Number Denotes Volume Water Heater Model LP-551 Rev. 000 Rel. 021 Date 4.2.21...
  • Page 17 Figure 5 - VWH Dimensions - NOTE: All Dimensions Are Approximate - VWH in Model Number Denotes Volume Water Heater Model LP-551 Rev. 000 Rel. 021 Date 4.2.21...
  • Page 18: Part 4 - Piping

    HTP offers 60/80/119/175 gallon size storage tanks in either stainless steel or glass-lined construction. These storage tanks will be directly connected to the VWH supply and return connection.
  • Page 19: Flow Switch Installation

    6. Thread temperature and pressure gauge into outlet combination fitting using pipe dope. Water temperature above 140 F requires the circulator to run continuously. Water hardness must be between 5 and 7 grains. Hardness above 7 grains will damage the heat exchanger and shorten the service life of the VWH.
  • Page 20: Scalding

    Approximate Time / Temperature Relationships in Scalds More than 5 minutes Do not thread a cap or plug into the relief valve or relief valve line under any circumstances! Explosion and property damage, serious 1 1/2 to 2 minutes injury, or death may result. About 30 seconds RE-INSPECTION OF T&P RELIEF VALVES: T&P valves should be About 10 seconds...
  • Page 21 Heat Exchanger Pressure Drop Flow Rate in GPM and Corresponding Pressure Drop in Feet (Δ P’) Model 8’ 10’ 11.5’ 13’ 15’ 16.5’ 17’ 19’ 299 / 301 13’ 14’ 15’ Model 21’ 23’ 24’ 299 / 301 16.5’ 18’ 20’...
  • Page 22: Check / Control Water Chemistry

    J. Plumbing I. Check / Control Water Chemistry Piping Components Water Heating System Piping System piping MUST be sized per technical pipe requirements listed Chemical imbalance of the water supply may affect efficiency and in Tables 11 - 14. Reducing pipe size can restrict flow rate through cause severe damage to the appliance and associated equipment.
  • Page 23: Applications

    K. Applications Figure 7 - VWH with Storage Tank Figure 8 - Two VWHs with Storage Tank 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 Figure 10 - VWH with Two Storage Tanks Figure 9 - Three VHWs with Two Storage Tanks 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 25: Part 5 - Venting

    Due to the extreme flammability of most glues, cements, solvents, without an approved HTP Backflow Valve (7100P-340) and and primers used to join plastic exhaust vent and intake pipes, Condensate Assembly (7100P-341). One (1) Backflow Valve must explosive solvent vapors must be cleared from all vent piping before be installed per each heater installed in the common vent system.
  • Page 26: 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 27: 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 11 - 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 28: Exhaust Vent And Intake Pipe Sizing

    Standard E. Exhaust Vent and Intake Pipe Sizing Increased Vent Size Vent Connection and Reducing 1. The exhaust vent and intake pipe size is 3” for 220 models and 4” for and Maximum Total Maximum Total Coupling 299 - 399 models. Equivalent Length Equivalent Length 2.
  • Page 29: Applications

    The following table lists optional exhaust/intake terminations available 15. All piping must be fully supported. Use pipe hangers at a from HTP: minimum of 4 foot intervals to prevent sagging of the pipe where Description Stock Code condensate may form.
  • Page 30 Sidewall Venting with Kit EXTERIOR Take extra precaution to adequately support the weight of vent WALL pipes terminating through the roof. Failure to properly support roof VENT KIT terminated piping could result in property damage, serious injury, or death. TWO PIPE ROOF VENTING WITH TEE (INTAKE) EXHAUST AND COUPLING (EXHAUST) INSERT INLET/EXHAUST...
  • Page 31 Venting Below Grade Snorkel Venting (Two Pipe Sidewall Venting Termina- For installations that exit the wall below grade: tions Beneath an Overhang) Excavate the site to a point where the pipes are to exit as shown in Figure 16. Ensure the wall is fully sealed where the pipes penetrate. The exhaust vent / air intake piping MUST be secured to the side of the building above grade, as shown, to provide rigidity.
  • Page 32 Unbalanced Flue / Vertical Vent Figure 18 - Unbalanced Venting - Roof Exhaust and Sidewall Intake NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for all equipment and detailing required by local codes. All vent pipes must be glued, properly supported, and the exhaust pitched a minimum of 1/4”...
  • Page 33: Venting Through An Existing System

    NOTE: The following instructions refer only to venting through an combustion air source. Two methods have been approved for existing vent system, and not to venting with HTP’s optional concentric such venting: Concentric Venting Through an Existing System and vent kits. Refer to Concentric Vent Kit installation manual (LP-166) for Venting as a Chase.
  • Page 34: Power Venting, Indoor Combustion Air In Confined Or Unconfined Space

    3. Power Venting, Indoor Combustion Air in Confined or Unconfined Space This VWH 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 5. Combustion air from the indoor space can be used if the space has adequate area or when air is provided through a duct or louver to supply sufficient combustion air based on the VWH input.
  • Page 35: Part 6 -Condensate Removal

    If the appliance condensate outlet is lower than the drain, you must use a condensate removal pump (kit p/n 554200 available from HTP). NOTE: If a nearby laundry tub is used as a disposal for waste water from the washing machine, draining the condensate into this tub allows the soapy water discharge to neutralize the acidic condensate.
  • Page 36: Part 7 - Wiring

    Part 7 - Wiring The electrical junction box has separate, clearly marked terminal strips for line voltage and low voltage wiring. Special jacks are provided for trouble-free cascade system wiring using standard Install wiring and electrically ground VWH in accordance with the CAT3 or CAT5 patch cables.
  • Page 37: System / Pipe Sensor

    Avoid running communication cables parallel and close to pump must be wired to or against high voltage (120 volt or greater) wiring. HTP recommends operate continuously; that the maximum length of communication bus cables not exceed otherwise the VWH will 200 feet.
  • Page 38: Cascade Master Pump And Sensor Wiring

    L. Cascade Master Pump and Sensor Wiring 1. Connect the system pump hot wire to the terminal marked 7 (SYS PUMP). 2. Connect the system pump neutral to the 8 (SYS NEUT) terminal and the pump ground wire to the 9 (SYS GND) terminal. 3.
  • Page 39 Figure 25 - Cascade Termination Plug Detail Figure 26 - Cascade Master and Follower Wiring LP-551 Rev. 000 Rel. 021 Date 4.2.21...
  • Page 40 CONTROL BOARD WIRING DIAGRAM VWH MODELS ONLY 120 VAC NEUTRAL J6-3 J2 - NEUT LINE J2-120 J6-2 POWER SWITCH DISPLAY BOARD ASSEMBLY J6-1 DUAL FLUE SENSOR X11-1 X11-4 X11-2 X-13 X5-15 X5-16 PROTECTED BY AN INTERNAL X6-10 J6-8 6.3 AMP FUSE J1-1 CH PUMP X6-11...
  • Page 41: Part 8 - Gas Connections

    A. Gas Piping Part 8 - Gas Connections 1. Run the gas supply line in accordance with all applicable codes. 2. Locate and install manual shutoff valves in accordance with state and local requirements. FIRE AND/OR EXPLOSION HAZARD 3. In Canada, the Manual Shutoff must be identified by the installing contractor.
  • Page 42: Gas Table

    B. Gas Table Refer to Table 23 to size the supply piping to minimize pressure drop between the meter or regulator and unit. Maximum capacity of pipe in cubic feet of gas per hour cannot have a pressure drop greater than .5 w.c. NOTE: For greater capacities, see NFPA 54, The National Fuel Gas Code.
  • Page 43: Vwh Gas Valve

    Do not do a gas conversion on this VWH without an officially Strain on the gas valve and fittings may result in vibration, premature approved conversion kit and instructions supplied by HTP. Failure component failure and gas leakage, and result in fire, explosion, to use a conversion kit when converting the VWH to fire on property damage, severe personal injury, or death.
  • Page 44: Part 9 - Start-Up Preparation

    IS NOT covered by the warranty. available from HTP (554200). This pump is equipped with two leads The water must be potable, free of corrosive chemicals, sand, dirt, and that can be connected to an alarm or another type of warning device other contaminates.
  • Page 45: Setting Up A Single Vwh

    5. Inspect exhaust vent and intake piping for signs of deterioration control will then tell the next VWH in the firing sequence to begin its from corrosion, physical damage or sagging. Verify exhaust vent and demand sequence. The master VWH control will then begin to ramp up intake piping are intact and correctly installed per Venting Section the firing rate command of that VWH.
  • Page 46 b. Apply power to the follower VWH you are working on. c. Enter system settings following instructions in Part 10 of this manual d. Set cascade address parameter 15 to 1 for the first follower, 2 for the second follower, etc. depending on which VWH you are programming based on the above notes.
  • Page 47: Part 10 - Start-Up Procedure

    value. Repeat until the correct code is entered. Press the ENTER key Part 10 - Start-Up Procedure to accept the code entered. If the code is correct, the readout will change to the appropriate screen. If the programming code is not accepted, the readout will continue to display as shown above.
  • Page 48: Programming The System Setting

    When done, press ENTER. The setting will stop blinking and the user Screen Description can move on to next setting. Press RESET to exit programming and To access the VWH setting program, press store settings. Listed below are the settings that can be programmed ENTER MENU CODE and hold ENTER for 4 seconds until the into the control.
  • Page 49 VWH). Function 30 Extra Boiler Mode Function 18 Step Modulation Mode Allows for a non HTP VWH to be STEP MODULATE MODE Not applicable on this product. controlled when the cascade output EXTRA BOILER MODE has risen above the percent of...
  • Page 50: Resetting The Maintenance Schedule

    Function 60 CH dT Setting Enables Modbus Mode appliance. Factory Default: This parameter is only available (Range: OFF, ON, AUTO). NOTE: when PUMP dT is selected in Turning Modbus Mode “ON” will open CH dT SETTING Function 56. Determines the desired a number of additional parameters temperature difference between the to customize Modbus installation.
  • Page 51: Part 11 - Start-Up Procedures For The Installer

    The actual VWH control lockout fault. The temperature measured by the tank top line will alternate between the or return sensor (HTP 7250P-325) FAULT HISTORY words ‘FAULT HISTORY’ and the fault is displayed on the bottom line. If a...
  • Page 52 Screen Description The fourth oldest VWH control lockout fault. The top line will This screen displays the most recent alternate between words VWH control blocking error. The FAULT HISTORY BLOCKING HISTORY ‘FAULT HISTORY’ and the actual fault top line will alternate between the 08/28/2009 Fr 5:19A 08/28/2009...
  • Page 53: Cascade Menu

    The tenth oldest VWH control This screen displays information blocking error. The top line will about cascade status. The VWH BLOCKING HISTORY alternate between words in the center of the top line 08/28/2009 Fr 5:19A ‘BLOCKING HISTORY’ shows that cascade demand is blocking code encountered.
  • Page 54: Part 12 - Troubleshooting

    Press v once. Part 12 - Troubleshooting BOILER 8 This screen is not applicable. A. VWH Error and Fault Codes BOILER 9 If any of the sensors detect an abnormal condition, or an internal Press v once. component fails during the operation of the VWH, the display may BOILER A10 show an error message and error code.
  • Page 55: User Interface Display

    Label all wires prior to disconnecting them when servicing the VWH. Wiring errors can cause improper and dangerous operation. Failure to follow these instructions may result in property damage or personal injury. NOTE: If system return temperatures are maintained below the dew point, condensation will form on the inside of the VWH cabinet and cause some internal sheet metal components to rust.
  • Page 56 F05 indicates the VWH supply temperature is excessive. When accompanied by the red FAULT light and LOCKOUT flashing on the display, this code indicates the supply sensor temperature has exceeded 210 F and a 1. Check circulator pump operation. serious safety issue exists. The VWH will not 2.
  • Page 57 1. Look into window. If there is flame, turn the gas off to the unit at the service valve and replace the gas valve. 2. If the flame signal on the status menu is greater than There is flame when the control is not telling 2.5uA when the burner is not lit, replace the spark ignitor.
  • Page 58 IF EXT LWCO is installed: 1. Check VWH feed water system. Ensure it is supplying make-up water to the VWH system. 2. Be sure all air is bled from the system. This error is generated when the External 3. Check for leaks in the VWH and system piping and Low Water Cut Off is installed and the water repair as necessary.
  • Page 59 The temperature of either the flue or supply Ensure the connections to the flue and supply sensors sensors has risen nine degrees in 100 are intact. If wires are intact, check sensor resistance. If AD SAFT FAULT milliseconds and not returned to normal the problem persists or the sensors are out of normal within 1 second.
  • Page 60: Part 13 - Maintenance

    E19 indicates the line voltage frequency is Inspect power wiring to the VWH and repair as necessary. out of range. This could happen if the VWH If connected to line voltage, notify the power company. LINE VOLTAGE is being powered from a small gasoline If connected to an alternate power source such as PUMP OFF powered generator that is overloaded or not...
  • Page 61: Cleaning Water Side Of Heat Exchanger

    c. Replace and tighten the six (6) 10MM nuts to the burner plate using staggered tightening sequence. (See detail.) When servicing is complete, make sure the condensate collector d. Reconnect all wiring connections e. Inspect the gas valve. Ensure the O-ring is in place. cap is replaced securely.
  • Page 62 Figure 32 - Condensate Detail LP-551 Rev. 000 Rel. 021 Date 4.2.21...
  • Page 63: Part 14 - Installation Checklist

    Part 14 - Installation Checklist Light Off Activities Date Completed: Check all piping and gas connections. Verify all are tight. Pressurize system. 1. Fill the Heating System Add water to prime condensate cup. Verify near VWH piping is properly supported. Leak test using locally approved methods (consult jurisdictional code book).
  • Page 64 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 Near VWH piping pipes are properly supported. Check condition of all vent pipes and joints. Ensure the vent piping Vent terminations are free of obstructions and blockages.
  • Page 65: Part 16 - Replacement Parts

    Part 16 - Replacement Parts ITEM # EP-220 Description 7450P-004 BOILER MODULE 7250P-160 CERAMIC TARGET WALL 7500P-109 M4 FLAT WASHER 7250P-704 M4 X 8 FLAT HEAD SCREW 7450P-300 BURNER DOOR 7450P-005 BURNER DOOR INSULATION 7450P-012 BURNER 7500P-074 GASKET - BURNER 7450P-007 AIR CHANNEL 7250P-206...
  • Page 66 ITEM# DESCRIPTION ITEM# 8600P-044 GASKET - FLARE X BSP FITTING 7450P-014 7450P-015 BOILER MODULE 7450P-407 FLARE X BSP FITTING 7250P-160 CERAMIC TARGET WALL 7450P-140 FLEXIBLE GAS LINE 7500P-109 WASHER, FLAT M4 - TARGET WALL 7450P-143 FLARE X NPT FITTING 7250P-704 SCREWS M4 X 8 FLAT HEAD - TARGET WALL 9500P-0030 CLOSE NIPPLE - 1/2"...
  • Page 67 Figure 35 - Replacement Parts - All Models LP-551 Rev. 000 Rel. 021 Date 4.2.21...
  • Page 68 LP-550-V LP-550-V 12/19/18 12/19/18 e t i 7450P-354 7450P-356 7450P-358 120V WIRING HARNESS (NOT SHOWN) 7450P-355 7450P-357 7450P-359 LOW VOLTAGE WIRING HARNESS (NOT SHOWN) Figure 36 - Cabinet Replacement Parts - All Models Control Board Part Numbers Model 220,000 BTU VWH 7450P-2109 7450P-2107 299,000 BTU / 301,000 BTU VWH...
  • Page 69: Limited Warranty

    5. Use the VWH in an open system, or in a closed system with a HTP warrants each VWH and its parts to be free from defects in properly sized and installed thermal expansion tank. materials and workmanship according to the following terms, 6.
  • Page 70 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 71: Maintenance Notes

    Maintenance Notes LP-551 Rev. 000 Rel. 021 Date 4.2.21...
  • Page 72: 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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