HTP EP-220 VWH Installation, Start-Up, Maintenance, Parts, Warranty
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HTP EP-220 VWH Installation, Start-Up, Maintenance, Parts, Warranty

Elite premier volume water heaters
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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.
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. 3.9.16

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Summary of Contents for HTP EP-220 VWH

  • Page 1 Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property damage, severe personal injury, or death. 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 IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE 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. levels or to important product information. NOTE: HTP, Inc. reserves the right to modify product technical specifications and components without prior notice. DANGER indicates an imminently hazardous situation...

  • Page 4: Table Of Contents

    J. Applications Part 5 - Venting and Condensate Removal The CSD-1 ASME Code, Section CW-400 requires that hot A. General water heating and supply boilers have a) a UL 353 temperature B. Approved Materials for Exhaust Vent and Intake Pipe control device, b) at least one (1) temperature-actuated control C.

  • Page 5: A. Improper Combustion

    NOTE: Consider piping and installation when determining boiler rated assembly. location. Altering any HTP, Inc. boiler with parts not manufactured by HTP, Inc. WILL INSTANTLY VOID the boiler warranty and could result in property damage, personal injury, or death. LP-551 Rev. 3.9.16...

  • Page 6: Water Temperature Adjustment

    HTP, Inc. ARE NOT covered by warranty. Spark Ignition The burner is ignited by applying high voltage through the Remove all sides of the shipping crate of the boiler.

  • Page 7: Optional Equipment

    Failure to do so could result in property damage, serious C. Optional Equipment personal injury, or death. Failure of boiler or components due Optional equipment available from HTP (and Part #): to incorrect operating conditions IS NOT covered by product • Wall Mount Bracket (7450P-211) warranty.

  • Page 8: Flooring

    2. Check for nearby connections to: • System water piping Do not mount the boiler to a hollow wall. Mount to the studs • Venting connections only. • Gas supply piping Use extreme care not to drop the boiler or cause bodily injury while lifting or mounting the boiler onto the optional wall •...

  • Page 9: Clearances For Service Access

    likely to form condensate in the vent) and requires a special vent D. Clearances for Service Access system designed for pressurized venting. NOTE: The venting options described here (and further detailed in the Venting section, this manual) are the lone venting options approved for this boiler.

  • Page 10: Indoor Combustion Air In Confined Or Unconfined Space

    all comply with the methods and limits given in the Venting Section, this manual. Ensure that the intake air will not contain any of the When installing a combustion air intake from outdoors, care contaminants in Table 2. Contaminated air will damage the must be taken to utilize uncontaminated combustion air.

  • Page 11: Water Chemistry Requirements

    Chemical imbalance of the water supply may affect efficiency and cause severe damage to the boiler and associated equipment. HTP recommends having water quality professionally analyzed to determine whether it is necessary to install a water softener. It is important that the water...
  • Page 12 Figure 4 - Boiler Dimensions - NOTE: All Dimensions Are Approximate - VWH in Model Number Denotes Volume Water Heater Model LP-551 Rev. 3.9.16...
  • Page 13 Figure 5 - Boiler Dimensions - NOTE: All Dimensions Are Approximate - VWH in Model Number Denotes Volume Water Heater Model LP-551 Rev. 3.9.16...

  • Page 14: Part 4 - Piping

    The boiler is designed to be connected to a storage tank to rated relief valve. supply domestic hot water. HTP offers 60/80/119/175 gallon size • Test T&P valve at least once annually to ensure the storage tanks in either stainless steel or glass-lined construction.

  • Page 15: Circulators

    Some local codes require back flow preventers on all incoming F. Flow Switch Installation water supplies. The hot water expansion tank must be listed 1. Choosing the correct flow paddle. for potable water use. The expansion tank should be located The boiler comes with a flow switch and four flow paddles.

  • Page 16: Scalding

    7. Connect red wire from flow switch to boiler wire harness. Approximate Time / Temperature Relationships in Scalds More than 5 minutes 1 1/2 to 2 minutes About 30 seconds About 10 seconds Less than 5 seconds Less than 3 seconds 8.
  • Page 17 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 18: Plumbing

    Minimum VWH Pipe Sizes 1” NPT Water temperature above 140 F requires the circulator pump to run continuously and must have a water hardness of between 299 / 301 1 1/4” NPT 5 and 7 grains. Hardness above 7 grains will damage the heat 1 1/2”...

  • Page 19: Applications

    J. Applications Figure 7 - VWH with Storage Tank Figure 8 - Two VWH Boilers 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 20 Figure 10 - VWH Boiler with Two Storage Tanks Figure 9 - Three VHW Boilers 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 21: Part 5 - Venting And Condensate Removal

    Part 5 - Venting and Condensate Removal 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 22: 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 PVC Schedule 40/80 ANSI / ASTM D1785 PVC, CPVC, and PP Venting Must PVC-DWV* ANSI / ASTM D2665 be ULC-S636 Certified. IPEX is Exhaust Vent or Intake an approved manufacturer in CPVC Schedule 40/80...

  • Page 23: Exhaust Vent And Intake Pipe Location

    D. Exhaust Vent and Intake Pipe Location Area Where Terminal Is Not Permitted Exhaust Vent Terminal Intake Pipe Terminal Figure 11 - Exit Terminals for Direct Vent Systems - ANSI Z223.1 / NFPA 54 for US and CAN/CSA B149.1 for Canada DETERMINE EXHAUST VENT AND INTAKE PIPE LOCATION –...

  • Page 24: Exhaust Vent And Intake Pipe Sizing

    E. Exhaust Vent and Intake Pipe Sizing 1. The exhaust vent and intake pipe size is 3” for 220 models and 4” for 299 - 399 models. 2. The maximum total equivalent length of exhaust vent and in- take pipe should not exceed 200 feet. a.

  • Page 25: Applications

    16. Ensure the outdoor intake pipe termination is screened to prevent blockage caused by debris or birds. The following table lists optional exhaust/intake terminations 6/23/15 available from HTP: TWO PIPE SIDEWALL VENTING WITH TEE (INTAKE) Description Stock Code AND COUPLING (EXHAUST) 3”...

  • Page 26: Sidewall Venting

    Sidewall Venting with Kit Sidewall Venting with Concentric Vent SIDE VIEW FRONT VIEW Roof Venting with Concentric Vent FRONT VIEW Figure 14 - Venting with Optional Kits (NOT INCLUDED WITH THE BOILER) NOTE: These drawings are meant to demonstrate system LP-325-PP 03/03/11 venting only.

  • Page 27: Venting Through An Existing System

    Concentric Venting Through an Existing System NOTE: The following instructions refer only to venting through an existing vent system, and not to venting with HTP’s optional concentric vent kits. Refer to Concentric Vent Kit installation manual (LP-166) for further information on venting with the optional concentric vent kits.

  • Page 28: Indoor Combustion Air In Confined Or Unconfined Space28

    Concentric Venting Through an Existing System Concentric Venting Through an Existing System Chase Venting Through an Existing System INTAKE EXISTING VENT AIR INTAKE W/ SCREEN AIR INTAKE W/ SCREEN Figure 17 - 1, 2 - Concentric Venting Through an Existing System, 3, Chase Venting Through an Existing System NOTE: These drawings are meant to demonstrate system venting only.

  • Page 29: Condensate Removal System

    Condensate from the boiler is slightly acidic with a pH of 3.2 - 4.5. To avoid long term damage to the drainage system and to meet local code requirements, HTP recommends neutralizing condensate with a Condensate Neutralizer Kit (Part # 7450P- 212 for 80/110/150/220/299/301 models, Part # 7350P-611 for the 399 model).

  • Page 30: Part 6 - Wiring

    3. A frozen condensate line could result in a blocked vent condition. It is very important to protect the condensate line from It is of extreme importance that this unit be properly freezing temperatures or any type of blockage. In installations grounded.

  • Page 31: Line Voltage Wiring For Standard Boiler

    between ALARM COM and NO is open during normal operation. D. Line Voltage Wiring for Standard Boiler The connections depicted in Figure 22 show two 120 volt lights NOTE: A termination plug is included in the CAT 3 / CAT 5 Bus connected to the alarm terminals.

  • Page 32: Optional 0-10 Volt Building Control Signal

    (120 volt or greater) wiring. metal conduit. If using shielded cable, the shielding should be HTP recommends that the maximum length of communication connected to the common ground of the boiler. bus cables not exceed 200 feet.
  • Page 33 Figure 24 - Cascade Master and Follower Wiring LP-551 Rev. 3.9.16...
  • Page 34 Figure 25 - Internal Connection Diagram LP-551 Rev. 3.9.16...

  • Page 35: Part 7 - Gas Connections

    Care must be taken when applying compound to prevent Part 7 - Gas Connections blockage or obstruction of gas flow which may affect the operation of the unit. Failure to follow all precautions could result in fire, explosion, Support gas supply piping with hangers, not by the boiler or its severe injury, or death.

  • Page 36: Check Inlet Gas Pressure

    Never use an open flame (match or lighter) to check for gas Ensure the pressure tap screw is properly tightened to prevent leaks. Use a soapy solution to test connection. Failure to use gas leaks. Failure to do so could cause substantial property a soapy solution test or check gas connection for leaks can damage, severe personal injury, or death.

  • Page 37: Boiler Gas Valve

    Do not do a gas conversion on this boiler without an officially Strain on the gas valve and fittings may result in vibration, approved conversion kit and instructions supplied by HTP. premature component failure and gas leakage, and result in fire, Failure to use a conversion kit when converting the boiler explosion, property damage, severe personal injury, or death.

  • Page 38: Part 8 - Start-Up Preparation

    HTP (554200). This 2. If the pH differs from above, consult local water treatment pump is equipped with two leads that can be connected to an company for treatment needed.

  • Page 39: Setting Up A Single Boiler

    sends that boiler a command to begin a demand sequence. That E. Setting Up a Single Boiler boiler will then begin a demand sequence as described above. When power is applied to the boiler, the control first Once the boiler ignites, the master boiler control will increase completes a power-up systems check.

  • Page 40: Part 9 - Start-Up Procedure

    makes the master boiler address 0. NOTE: The Master Part 9 - Start-Up Procedure Boiler MUST be addressed as 0. e. Change Cascade Mode function 23 to 926 Boilrs. This makes it the master boiler. FOR YOUR OWN SAFETY READ BEFORE OPERATING f.

  • Page 41: Operating Instructions

    – Resets any lockout error code D. Programming Boiler Settings – Returns the user to the default display screen. Boiler Setting Program Access ENTER – The ENTER key is used to access parameter Note: Programming the boiler control is not possible when the programming mode.

  • Page 42: Programming The System Setting

    Screen Description Screen Description CLOCK MINUTE Function 4 Burner Off Differential Adjusts the minute setting. 08/28/2009 Fr 10:01A This is the amount of degrees CLOCK DAY OF WEEK above tank set point that the Adjusts the day of the week. 08/28/2009 Fr 10:01A BURNER OFF DIFF...
  • Page 43 NORMAL MOD STEP MODULATE MODE Function 30 Extra Boiler Mode Not applicable on this product. Allows for a non HTP boiler to Function 19 Boiler DHW Temp be controlled when the cascade EXTRA BOILER MODE output has risen above the percent BOILER SUPPLY DHW Not applicable on this product.

  • Page 44: Resetting The Maintenance Schedule

    Maximum Firing Rate of all Connected Boilers Screen Description FAN SPEED - Output is proportional to boiler fan speed. 0V Function 33 Year = Fan is Off, 1.5V = Minimum Fan Speed, 10V = Maximum Fan SERVICE SCHEDULE Allows the user to set the year of the Speed YEAR 00/00/2000 next service reminder.
  • Page 45 > Press once at any status The actual temperature measured screen. by the tank or return sensor (HTP TEMPERATURE CONTROL Displays 0-10V status when 0-10V is 7250P-325) is displayed on the ANALOG SIG 0.2 V connected.
  • Page 46 This screen displays the fourth Screen Description oldest boiler control lockout fault. This screen displays the most recent The top line will alternate between boiler control blocking error. The FAULT HISTORY BLOCKING HISTORY the words ‘FAULT HISTORY’ and top line will alternate between the 08/28/2009 Fr 5:19A 08/28/2009...

  • Page 47: Cascade Menu

    Press v once. This screen displays information about cascade status. The VWH in This screen displays the tenth oldest the center of the top line shows that boiler control blocking error. The BLOCKING HISTORY cascade demand is coming from top line will alternate between the 08/28/2009 Fr 5:19A the tank sensor or thermostat.

  • Page 48: Boiler Test Mode

    Press v once. Part 11 - Troubleshooting BOILER 8 This screen is not applicable. A. Boiler Error and Fault Codes BOILER 9 If any of the sensors detect an abnormal condition, or an Press v once. internal component fails during the operation of the boiler, BOILER A10 This screen is not applicable.

  • Page 49: User Interface Display

    Label all wires prior to disconnecting them when servicing DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN the boiler. Wiring errors can cause improper and dangerous SUBMERGED IN WATER. Immediately call a qualified service operation. Failure to follow these instructions may result in technician.
  • Page 50 The dual flue sensor contains two sensing elements within single body. 1. Inspect the dual flue sensor for physical damage, indicates that one or both halves of the blockage, or corrosion and replace it if necessary. flue temperature sensor has failed OR the 2.
  • Page 51 1. Monitor gas pressure to the unit while in operation. 2. Assure the flame is stable when lit. 3. Check if the display readout changes from “GAS VALVE The flame was lost 3 times while the boiler ON” to “RUN” within a few seconds of boiler ignition. was firing during 1 demand call.
  • Page 52 1. Check boiler feed water system to be sure it is supplying make-up water to the boiler system. 2. Ensure all air is bled from the system. 3. Check for leaks in the boiler and system piping and LOW WATER BOILER Water level in the boiler is low.
  • Page 53 The control has been programmed by a CONTROL PROGRAMED PP technician or the factory. After programming, Press RESET for at least 1 second to use the control. the control is left in a locked out mode. 1. Check outdoor sensor connections and wiring. Ensure the sensor and wiring are intact and that the sensor is There is an issue with the outdoor sensor.

  • Page 54: Part 12 - Maintenance

    Supply Dual Flue Indirect Return Temperature Temperature Sensor Sensor Sensor Sensor The combustion chamber insulation in this product contains (7250P-325) (7250P-667) (7700P-073) (7450P-176) ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The Temperature ( Resistance (ohms) International Agency for Research on Cancer (IARC) has 32624...

  • Page 55: Cleaning Water Side Of Heat Exchanger

    to the area being cleaned. Flush the combustion chamber with system. 3. Thoroughly flush the heat exchanger before commissioning fresh water until it runs clear from the condensate reservoir. At this point, the boiler should be ready to be reassembled. the unit back in service.
  • Page 56 It is very important that the condensate piping be no smaller than ¾”. To prevent sagging and maintain pitch, condensate piping should be supported with pipe supports, and pitched ¼” per foot to allow for proper drainage. Failure to maintain proper pipe size and pitch could result in condensate leakage and potential water damage to property.
  • Page 57 Figure 30 - Combustion System Replacement Parts - 220kBTU Model LP-551 Rev. 3.9.16...
  • Page 58 Figure 31 - Combustion System Replacement Parts - 299 - 399kBTU Models LP-551 Rev. 3.9.16...
  • Page 59 Figure 32 - Replacement Parts - All Models LP-551 Rev. 3.9.16...
  • Page 60 LP-550-V LP-550-V 02/18/16 02/18/16 ITEM# EL-80 EL-110 EL-150 EL-220 EL-299/301 EL-399 DESCRIPTION 7450P-282 7450P-157 CLAMP ALL - EXHAUST VENT ADAPTER 7450P-201 7450P-202 EXHAUST ADAPTER 7450P-176 DUAL FLUE SENSOR 7450P-030 7450P-031 AIR INLET ADAPTER 7450P-032 7450P-033 AIR INLET CONNECTOR NUT 7450P-028 DISPLAY BOARD 7450P-021 MEMBRANE TOUCHPAD...

  • Page 61: Part 13 - Installation Checklist

    Part 13 - 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 boiler piping is properly supported. Leak test using locally approved methods (consult jurisdictional code book).
  • Page 62 Inspection Activities Date Last Completed Piping 1st Year 2nd Year 3rd Year 4th Year* Check boiler and system piping for any sign of leakage; make sure Near boiler piping pipes are properly supported. Check condition of all vent pipes and joints. Ensure the vent piping Vent terminations are free of obstructions and blockages.
  • Page 63 ADDITIONAL INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS In the Commonwealth of Massachusetts, the installer or service agent shall be a plumber or gas fitter licensed by the Commonwealth. When installed in the Commonwealth of Massachusetts or where applicable state codes may apply;...
  • Page 64 3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment.

  • Page 65: Limited Warranty

    13. Any damages, malfunctions, or failures resulting from the use D. If HTP is unable to repair or replace a VWH so as to conform to of dielectric unions. this warranty after a reasonable number of attempts, HTP will then 14.
  • Page 66 NOTE: Any parts or VWHs returned to HTP for warranty analysis will become the property of HTP and will not be returned, even if credit is denied. If all warranty conditions are satisfied, HTP will provide replacement parts to the retailer.

  • Page 67: Maintenance Notes

    Maintenance Notes LP-551 Rev. 3.9.16...

  • Page 68: Customer Installation Record Form

    Customer Installation Record Form The following form should be completed by the installer 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...

This manual is also suitable for:

Ep-299 vwhEp-399 vwhEp-301 vwh

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