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HTP RGH-150 Installation Manual

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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.
The surfaces of these products contacted by consumable water contain less than 0.25% lead by weight, as required by the Safe
Drinking Water Act, Section 1417.
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 WATER HEATER.
Do not try to light any water heater.
Do not touch any electrical switch.
Do not use any phone in your building.
Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department. Installation and service must be provided by a qualified installer,
service agency, or the gas supplier.
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.
WHAT TO DO IF YOU SMELL GAS
New Bedford, MA 02745
Crossover
Water Heater
INSTALLATION
START-UP
MAINTENANCE
PARTS
RGH-150 / 199 Models*
*"LP" denotes propane gas
www.htproducts.com
LP-590 REV. 3.23.17

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  • Page 1 RGH-150 / 199 Models* *“LP” denotes propane gas 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 The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels, or to important product information. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
  • Page 3 In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmental official may be the AHJ. NOTE: HTP, Inc. reserves the right to modify product technical specifications and components without prior notice. FOR THE INSTALLER This manual must only be used by a qualified heating installer/service technician.

  • Page 4: Table Of Contents

    The latest version of the National Fuel Gas Code, ANSI Z223.1, from American Gas Association Laboratories, 8501 East Pleasant Valley Road, Cleveland, OH 44131. In Canada – CGA No. B149 (latest version), from Canadian Gas Association Laboratories, 55 Scarsdale Road, Don Mills, Ontario, Canada M3B 2R3.
  • Page 5 2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................24 3. Screen Installation ..................................24 4. Power Venting, Indoor Combustion Air Installation in Confined or Unconfined Space ............25 PART 6 – INSTALL THE CONDENSATE DRAIN ........................27 PART 7 – GAS PIPING ................................27 A.

  • Page 6: Part 1 - Items Shipped With The Water Heater

    PART 12 – TROUBLESHOOTING ............................65 PART 13 – MAINTENANCE PROCEDURES ..........................66 REPLACEMENT PARTS ................................69 Limited Warranty for RGH-150 / 199 Water Heaters ........................74 MAINTENANCE REPORT ................................76 MAINTENANCE NOTES ................................. 78 CUSTOMER INSTALLATION RECORD FORM ..........................79 PART 1 –...

  • Page 7: Part 2 - Safety Regulations

    HTP, Inc. cannot anticipate every circumstance that might involve a potential hazard. Each installation has its own specialized characteristics, requirements, and possible hazards. Therefore, all possible incidents are not included in these warnings. Proper and safe installation, operation, and service are the responsibility of the professional service technician.

  • Page 8: Improper Combustion

    Certain local codes require additional temperature limits. In addition, certain types of systems may operate at temperatures below the minimum set point of the limit provided with the water heater. Contact HTP, Inc. for additional overheat controls.

  • Page 9: Freeze Protection

    Consider water heater piping and installation when determining water heater location. NOTE: Damages resulting from incorrect installation or from use of products not approved by HTP, Inc. ARE NOT covered by warranty. The water heater control is equipped with freeze protection that activates based on internal water temperature. See the table below for details on freeze protection operation.

  • Page 10: High Elevation Installations

    H. HIGH ELEVATION INSTALLATIONS Natural gas at high elevation might contain less heating value than typical 1,000 BTU/cu ft and therefore can cause improper air / gas mix leading to improper combustion. For natural gas installations above 3,000 ft, call your gas provider to determine the heating value of the supplied natural gas.
  • Page 11 Figure 1 – 150 Model Specifications and Dimensions Figure 2 – 199 Model Specifications and Dimensions DESCRIPTION DIAMETER 3” Air Intake Adapter Exhaust Outlet Adapter 3” ¾” Gas Inlet Adapter ½” Condensate Adapter ¾” DHW Outlet Adapter ¾” DHW Inlet Adapter ¾”...
  • Page 12 Figure 3 – Components NUMBER COMPONENT DESCRIPTION NUMBER COMPONENT DESCRIPTION Air Intake Adapter Cold Water Thermistor Flue Air Pressure Sensor Recirculation Return Adapter Air Inlet Orifice Recirculation Pump Air Inlet Pipe Flow Control Valve Gas Outlet Pipe Water Mixing Valve Burner High Limit Switch Terminal Strip Gas Valve...

  • Page 13: Part 4 - Prepare Water Heater Location

    The water heater should be located near a floor drain, or installed in proximity to an adequately drained drain pan. HTP WILL NOT be held liable for leakage damages. To conserve water and energy, insulate all water piping, especially the hot and recirculation water lines.

  • Page 14: Leveling

     Location that could cause the system and water heater to freeze and leak.  Incorrectly-sized expansion tank Do not connect the water heater to any heating systems or components that have been previously used for non-potable applications. Do not introduce toxic chemicals, such as antifreeze or water heater treatments, into the water heater or any piping meant for potable water purposes.

  • Page 15: Residential Garage And Closet Installations

    D. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS Check with your local Authority Having Jurisdiction for requirements when installing water heater 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 16: Removing A Water Heater From A Common Vent System

    Ensure that the intake air will not contain any of the contaminants below. For example, do not pipe intake near a swimming pool. Avoid areas subject to exhaust fumes from laundry facilities. These areas always contain contaminants. Contaminated air will damage the water heater, resulting in possible substantial property damage, severe personal injury, or death.

  • Page 17: Uncrating The Water Heater

    I. UNCRATING THE WATER HEATER UNCRATING WATER HEATER – Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee. Cold weather handling – If water heater has been stored in a very cold location (below 0 F) before installation, handle with care until the plastic components come to room temperature.

  • Page 18: Part 5 - Venting

    PART 5 – VENTING Vent this water heater in accordance with these instructions. Failure to do so will result in property damage, severe personal injury, or death. DO NOT mix vent systems or materials unless specifically told to do so in this manual. DO NOT thermally insulate the exhaust vent or intake pipes.
  • Page 19  Remove all burrs and debris from joints and fittings.  When using PVC or CPVC pipe, all joints must be properly cleaned, primed, and cemented. Use only cement and primer approved for use with the pipe material. Cement must conform to ASTM D2564 for PVC and ASTM F493 for CPVC pipe. NOTE: DO NOT CEMENT POLYPROPYLENE PIPE.

  • Page 20: Approved Vent Materials

    Figure 7 – Vent Termination Detail DESCRIPTION CANADA Clearance above grade, veranda, porch, deck, or balcony 1 foot 1 foot Clearance to window or door that may be opened 1 foot 3 feet Clearance to permanently closed window Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2 feet from the center line of the terminal Clearance to unventilated soffit...

  • Page 21: Allowed Combined Vent Lengths

    When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the water heater vent connection, and at the termination when using an HTP PVC termination kit. DO NOT mix AL29-4C piping from different manufacturers unless using adapters specifically designed for the purpose by the manufacturer.

  • Page 22: Tightening Water Heater Collar To Exhaust Vent And Intake Pipe

     For 2” diameter installations, install a reducing coupling in a vertical section of pipe ABOVE the pipe clamp installed on the water heater. See Figure 8. b. For example: If the 2” exhaust vent has two 90 elbows and 10 feet of PVC pipe we will calculate: Exhaust Vent Equivalent Length = (2x8) + 10 = 26 feet.

  • Page 23: Vent Termination

    E. VENT TERMINATION 1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations Figure 10 – Direct Vent, Roof and Sidewall Vent Terminations All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the appliance to allow drainage of condensate.

  • Page 24: Direct Vent, Optional Horizontal And Vertical Vent Kits

    2. Direct Vent, Optional Horizontal and Vertical Vent Kits Figure 11 – Direct Vent, Vent Terminations (With Optional Kits) All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the appliance to allow drainage of condensate.

  • Page 25: Power Venting, Indoor Combustion Air Installation In Confined Or Unconfined Space

    4. Power Venting, Indoor Combustion Air Installation in Confined or Unconfined Space This heater 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 9.
  • Page 26 Figure 14 – NOTE: These drawings are meant to demonstrate system venting only. The installer is responsible for all equipment and detailing required by local codes. LP-590 REV. 3.23.17...

  • Page 27: Part 6 - Install The Condensate Drain

    PART 6 – INSTALL THE CONDENSATE DRAIN 1. Due to its efficient design, the water heater produces condensate (water) as a normal by-product. This condensate is acidic, with a pH level between 3 and 4. This condensate must be drained away from the water heater and disposed in accordance with all local regulations.

  • Page 28: Lp (Liquid Propane) Gas Pipe Sizing

    Maximum Natural Gas Delivery Capacity – Length of Black Iron Pipe (Sch. 40 Metallic) in Feet Cubic Feet per Hour (0.60 Specific Gravity, 0.5 WC Pressure Drop) Pipe Size ½” ¾” 1” 1 ¼” 1390 1 ½” 2090 1430 1150 2”...
  • Page 29 Figure 16 – Gas Line With Shut-Off Valve Detail 6. Test the gas pressure to make sure it meets the minimum standards and does not exceed the maximum standards of the water heater. 7. Leak test the gas line pipe before placing the water heater in operation. Only use approved leak detector liquid solutions to check for leaks.

  • Page 30: Additional Precaution For Excess Flow Valve (Efv)

    C. ADDITIONAL PRECAUTION FOR EXCESS FLOW VALVE (EFV) If an excess flow valve (EFV) is in the gas line, check the manufacturer’s minimum and maximum flow capacity ratings. An improperly sized EFV will not allow for a full flow of gas to the water heater and will cause the water heater to malfunction.

  • Page 31: Part 8 - Water Piping

     The size of the hot water pipe should be ¾” diameter.  Isolation (shutoff valves) should be used to ease future servicing. HTP offers isolation valves (Part #7850P-090). These optional parts may be purchased separately.  All water piping should be insulated.

  • Page 32: Install A Backflow Preventer

    External Recirculation Mode – This mode keeps an external recirculation loop warm to make hot water production more efficient and also aid in freeze protection. An external recirculation line must be installed in order to recirculate water externally. The installer may program specific recirculation functions by day and time to circulate and heat water when the user most needs hot water.
  • Page 33 Figure 24 – DHW Piping, Single Water Heater – NOTE: There is a Built-In Flow Check in the Internal Pump Loop NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold water inlet.
  • Page 34 Figure 25 – Piping with Recirculation – NOTE: There is a Built-In Flow Check in the Internal Recirculation Pump Loop NOTE: For installations where internal pump is not adequate for the recirculation loop, an additional pump can be installed and powered by the appliance (2A Max).
  • Page 35 Figure 26 – Water Heater with Storage Tank – NOTE: There is a Built-In Flow Check in the Internal Pump Loop NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold water inlet.
  • Page 36 Figure 27 – Water Heater with Storage Tank and Recirculation – NOTE: There is a Built-In Flow Check in the Internal Recirculation Pump Loop NOTES: 1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required. 2.
  • Page 37 Figure 28 – Water Heater with Air Handler without Internal or External Recirculation – NOTE: There is a Built-In Flow Check in the Internal Recirculation Pump Loop NOTE: If Preheat, Internal, or External Recirculation is active when using Air Handler, a solenoid valve must be used to isolate air handler loop when central heating is not needed.
  • Page 38 Figure 29 – Water Heater with Air Handler and Recirculation – NOTE: There is a Built-In Flow Check in the Internal Recirculation Pump Loop NOTE: If Preheat, Internal, or External Recirculation is active when using Air Handler, a solenoid valve must be used to isolate air handler loop when central heating is not needed.
  • Page 39 Figure 30 – Water Heater with Thermal Bypass Valve – NOTE: There is a Built-In Flow Check in the Internal Recirculation Pump Loop – LP-569-L Using the Optional Crossover (Thermal Bypass) Valve In piping applications where a dedicated recirculation line is not available or too costly to install, the water heater can use a crossover (thermal bypass) valve as a method of recirculation.
  • Page 40 Figure 31 – Water Heater Installed with Combi Appliance – NOTE: There is a Built-In Flow Check in the Internal Recirculation Pump Loop – LP-569-M NOTE: The solenoid valve is powered by the water heater. The solenoid valve must be normally closed, energize when the water heater is over 90% of capacity, and deactivate when water heater is less than 50% of capacity.

  • Page 41: Circulator Sizing

    E. CIRCULATOR SIZING Figure 32 – This chart represents the internal recirculation pump performance curve taking into account valves and heat exchanger pressure losses. Figure 33 – This chart represents pressure drop through the heat exchanger and internal valves. NOTE: When using external recirculation mode with the built-in pump, observe the following maximum recirculation pipe lengths including fittings: ...

  • Page 42: Pressure Relief Valve

    F. PRESSURE RELIEF VALVE An external pressure relief valve must be installed on this water heater. When installing, observe the following guidelines. Failure to comply with these guidelines can result in substantial property damage, personal injury, or death. This water heater must be provided with an approved 150 psi, ¾”...

  • Page 43: Wiring Information

    A. WIRING INFORMATION 1. This water heater must be properly grounded. Ensure the electrical receptacle that the water heater will be plugged into is properly grounded. 2. Do not attach the ground wire to either the gas or water piping. Figure 35 –...
  • Page 44 SYSTEM CONTROL SETTINGS MAXIMUM FLAME DETECTING VOLTAGE 2.4V PRE-PURGE TIME (Tp) 5 seconds SAFETY TIME (IGNITING TIME) (Ts) 1 second IGNITING INTERVAL TIME <10 seconds POST-PURGE TIME (Tip) 3 minutes OVER-HEATING 1,2,3 PROTECTION DETECTION TIME <2 seconds TEMPERATURE SENSOR FAULT DETECTION TIME <3 seconds # OF IGNITION ATTEMPTS (Ntl) F –...
  • Page 45 Figure 38 – Electrical Wiring Diagram LP-590 REV. 3.23.17...
  • Page 46 Figure 39 – Ladder Diagram LP-590 REV. 3.23.17...
  • Page 47 CONNECTOR DESCRIPTION HT SELV NO. OF LOCATION BOARD SILK CASE GROUND Power Supply Line Internal Pump Ignitor HEAT/CP2 External Pump 65001WS-12 Gas Valve HT (120V~) EARTH GROUND Power Supply Neutral 9-12 AC Power COM Line Solenoid Valve Power Supply (Live) CP2/3WAY LW6A4-03 Solenoid Valve Power Supply (Neutral)
  • Page 48 CONNECTOR DESCRIPTION HT SELV NO. OF LOCATION BOARD SILK Flame Sensor OP.S Operating Water Temperature Sensor DH.S DHW Temperature Sensor Inlet Water Temperature Sensor SELV (5V) LWD1140-14 BG.S Exhaust Temperature Sensor ST.S Return Water Temperature Sensor SP.S Overheat Temperature Sensor IWM Stepper Motor Coil / Y Phase IWM Stepper Motor Coil / X Phase CN10...

  • Page 49: Part 10 - Operating System Instructions

    PART 10 – OPERATING SYSTEM INSTRUCTIONS A. CONTROL PANEL Figure 40 – Water Heater Control Panel Detail B. LCD DISPLAY DESCRIPTIONS Figure 41 – LCD Display Detail LCD also features a backlit lamp that will illuminate:  When a user action is detected (a button is pressed) ...

  • Page 50: Changing The Dhw Set-Point

    Time for Display Remarks All segments “ON” 1 Sec LCD Test All segments “OFF” 0.5 Sec 1 Sec Category: RGH-150 / 199 1 Sec 0061 1 Sec Software Version for Front Panel 1 Sec 00.XX 1 Sec Software Version for Water Heater 1 Sec XX.XX...

  • Page 51: Changing The Time

    Turn the dial counterclockwise to lower and clockwise to raise the DHW set-point. After changing the temperature, press the button to save the set-point. To change the DHW Set-Point above 121 F (49.5 C), press, then press and hold the button when the display panel is powered ON.

  • Page 52: Installer Mode

    Display Display Detail Description (Main Menu) (Sub Menu) A: GA or A:LI Flow Unit Current Flow Unit (Li: Liters/min, GA: Gallons/min) b: dH DHW outlet water temperature Current DHW outlet water temperature C: In DHW inlet water temperature Current DHW inlet water temperature d: Rt Recirculation return water temperature Current recirculation return water temperature...
  • Page 53 Display Default Detail Description : Recirculation Pump is not used. (Recirculation and Preheat Modes are OFF.) : Preheat Mode is used. The water heater automatically turns on and 0: RC Recirculation Pump Operation meets the DHW setpoint temperature when the internal temperature falls below the differential setting (15: So).

  • Page 54: Using Recirculation Modes - Step 1

    Delay time from DHW Mode to Range: 0 – 2 minutes 19: dt Recirculation or Air Handler Modes Display Default Detail Description Cd – Comfort Mode. When this mode is active the solenoid valve energizes when the water heater is over 90% of the capacity, and deactivate when water heater is less than 50% of the capacity.

  • Page 55: Recirculation Functions - Using Recirculation Modes - Step 2

    program specific recirculation functions by day and time to circulate and heat water when the user most needs hot water. See Recirculation Functions, this manual, for details. To set Recirculation Modes: 1. Installer Mode will activate when is pressed and held for five seconds while the water heater display is powered Off. .

  • Page 56: Smart Auto-Learn Recirculation Function

    Figure 49 – Recirculation Programming Screen Setting Detail Description When set in Smart Auto-Learn, the pump will run in the Pulse Function for the first Smart Auto-Learn seven (7) days. During this period the water heater will monitor and record hot water (Default Internal / External Recirculation usage patterns.

  • Page 57: Error Mode

    Figure 51 – A – Selecting a Recirculation Function, B – Entering Day Setting e. The default day is displayed when the program function is selected. Press the button to remove a day. Turn the dial to select other days. See Figure 51 A. f.
  • Page 58 Figure 54 – A - Error Screen, B – Resetting an Error Code Error Code Error Code Description Possible Remedies Press the Power button to clear the Error Code. If Error happens again: 1. Monitor the gas pressure to the water heater while in operation. Ensure pressure is between 3.5 and 14”...
  • Page 59 Error Code Error Code Description Possible Remedies This Error Code will go away when outlet water temperature decreases. If Error happens again: Water Outlet Sensor Er:32 1. Check DHW outlet temperature sensor. Ensure connections are secure. Open or Short 2. Check sensor resistance. If resistance is zero, replace the sensor. 3.
  • Page 60 Error Code Error Code Description Possible Remedies Press the Power button to clear the Error Code. Flow Control Valve Er:64 If Error happens again: Operation Fault 1. Turn power OFF and ON at the main power switch internal to the water heater. 2.

  • Page 61: Error Tree Analysis

    K. ERROR TREE ANALYSIS 1. FLAME DETECTION Figure 55 – Flame Detection Error Analysis Tree 2. GAS DETECTION Figure 56 – Gas Detection Error Analysis Tree LP-590 REV. 3.23.17...

  • Page 62: Air Pressure Switch

    3. AIR PRESSURE SWITCH Figure 57 – Air Pressure Switch Analysis Tree 4. Recirculation / Inlet / DHW / Operating Temperature / Exhaust SENSORS Figure 58 – Inlet / DHW / Operating Temperature Sensors Error Analysis Tree LP-590 REV. 3.23.17...

  • Page 63: Part 11 - Final Installation Checklist

    PART 11 – FINAL INSTALLATION CHECKLIST Is there enough space to ensure proper installation? Does installation location allow for proper service clearances? BEFORE Are water and gas lines properly sized and set at proper pressures for the installation? INSTALLING Is water heater 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 water heater? Does water heater loop piping meet the minimum sizing requirements listed?
  • Page 64 Figure 59 – Flame Sight Glass DHW Inlet Temperature Sensor DHW Outlet Temperature Sensor (7850P-015) (7850P-019) Exhaust Temperature Sensor HX (OP) Temperature Sensor (7850P-070) (7850P-081) Temperature (◦F) Resistance (Ω) Temperature (◦F) Resistance (Ω) 62162 28409 48440 22152 38045 17408 30107 13782 23998 10990...

  • Page 65: Part 12 - Troubleshooting

    PART 12 – TROUBLESHOOTING TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSES POSSIBLE REMEDIES 1. Is the plug on the power supply cord unplugged 1. Reset the plug. from the electrical outlet? 2. Reset the circuit breaker. No electrical power 2. Is electrical panel’s 10 Amp circuit breaker tripped? 3.

  • Page 66: Part 13 - Maintenance Procedures

    Display Condition Diagnostic Possible Corrective Actions Ensure service switch and/or circuit Turn on service switch or circuit breaker to breaker to water heater is turned ON power water heater Troubleshoot and correct the power supply Is there 120V at the service switch to the manual switch Nothing appears on the display...
  • Page 67 Check the Status of the Control Panel Observe the Control Panel to ensure the water heater is powered on, and to check for any error codes. Clear any debris from the panel. Check Exhaust Vent and Intake Pipe Terminations Verify that the water heater exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the exhaust vent or intake pipe openings.
  • Page 68  If relief valve seats properly, restore power to the water heater. Observe operation for five minutes and ensure it operates properly. Check the Burner Clean the exterior of the burner. Cleaning the Cold Water Inlet Filter (Draining the Water Heater) 1.

  • Page 69: Replacement Parts

    5. Open service valves (V3 and V4) on the hot water outlet and cold water inlet lines. 6. Turn on the circulation pump. Operate the pump and allow the cleaning solution to circulate through the water heater for at least 1 hour at a rate of 4 gallons per minute.
  • Page 70 7850P-272 Exhaust Duct Inner Adapter 7855P-004 Display Panel Cover 7850P-023 Combustion Analyzer Port Plug 7855P-335 Condensate Trap Assy 7855P-605 RGH-150 Control Board 7855P-407 Air Intake Cap Assy 7855P-411 RGH-199 Control Board 7855P-406 Air Intake Cap 7855P-337 Control Board Bracket 7850P-269...
  • Page 71 Figure 63 – Heat Exchanger Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Ceramic Fiber Burner – 150 Exhaust Temperature Sensor 7855P-349 7855P-635 Clip Model 27-4 Ceramic Fiber Burner – 199 Exhaust Temperature Sensor 7855P-092 7855P-420 Model Exhaust Pipe Assy – 150 Model 7855P-630 27-5 Ignition Rod...
  • Page 72 Figure 64 – Combustion System Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Gas Pipe (to Mixer) – 150 Model Burner Inlet Channel 7855P-424 7855P-638 Air Damper – 150 Model Gas Pipe (to Mixer) – 199 Model 7855P-637 7855P-650 NG Gas Orifice (7.2 mm) –...
  • Page 73 Figure 65 – Water Side Replacement Parts NUMBER DESCRIPTION PART NUMBER NUMBER DESCRIPTION PART NUMBER Heat Exchanger Temperature 7850P-081 Mixing Block 7855P-603 Sensor (OP) ¾” Pipe Gasket 7855P-073 DHW Outlet Adapter 7855P-225 Overheat Switch (Heat 7850P-051 DHW Temperature Sensor 7855P-094 Exchanger) Water Outlet Pipe –...

  • Page 74: Limited Warranty For Rgh-150 / 199 Water Heaters

    COVERAGE A. During the first year after the original date of installation, HTP warrants that it will repair or replace, at its option, any defective or malfunctioning component of the water heater with a component of equivalent size and current model. Replacement components will be warranted for ninety (90) days.
  • Page 75 NO OTHER WARRANTIES This HTP Warranty gives you specific legal rights, and you may also have other rights that vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages so this limitation or exclusion may not apply to you.

  • Page 76: Maintenance Report

    MAINTENANCE REPORT In unusually dirty or dusty conditions, care must be taken to keep water heater cabinet door in place at all times. Failure to do so VOIDS WARRANTY! Allowing the water heater to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by the installation location could result in water heater failure, property damage, personal injury, or death.
  • Page 77 FINAL INSPECTION Check list Verify that you have completed entire check list. WARNING: FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OR DEATH. Homeowner Review what you have done with the homeowner. TECH SIGN OFF Table 39 - *Continue annual maintenance beyond the 4 year as required.

  • Page 78: Maintenance Notes

    MAINTENANCE NOTES LP-590 REV. 3.23.17...

  • Page 79: 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: Installation Address: Date of Installation:...

This manual is also suitable for:

Rgh-199

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