Munchkin Contender Wall Mounting Installation Template WARNING This heater is heavy and awkward to lift. It is recommended and safer to install the heater with two people. Use caution as to not drop this heater which could cause personal injury. Verify that the heater is securely mounted before leaving the heater unsupervised.
Installation Manual • • • • Installation Startup Maintenance Parts MH18082 WARNING This manual must only be used by a qualified heating installer/service technician. Read all instructions in this manual before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage.
GAS-FIRED HEATER Installation Manual WARNING 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 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 • Do not try to light any appliance. • Do not touch any electrical switch: do not use any phone in your building.
GAS-FIRED HEATER Installation Manual CONTENTS Part 1 – Product and Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5 Part 2 – How The Heater Operates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 Part 3 – Prepare Heater Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11 A. B. C. D. E. F. G.
GAS-FIRED HEATER Installation Manual CONTENTS (CONT’D) F. G. H. I. Exhaust Vent and Intake Air Pipe Installation. Heater Removal from a Common Vent System Condensate Removal System Diagrams for Side Wall Venting Part 8 – Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45,46 A. B. C. D. Gas Connection Gas Piping Gas Table Dungs Gas Valve Part 9 – Field Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS-FIRED HEATER Installation Manual PART 1: PRODUCT AND SAFETY INFORMATION SPECIAL ATTENTION BOXES The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the product. DEFINITIONS DANGER DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
GAS-FIRED HEATER Installation Manual PART 1: PRODUCT AND SAFETY INFORMATION (CONT’D) supply to circulator. Instead, shut off the gas supply at a location external to the appliance. WARNING Installer — Read all instructions in this manual, and Munchkin Contender Venting section, before installing. Perform steps in the order given. User — This manual is for use only by a qualified heating installer/service technician. Refer to User’s Information Manual for your reference.
GAS-FIRED HEATER Installation Manual PART 1: PRODUCT AND SAFETY INFORMATION (CONT’D can cause internal corrosion in system components. Leaks in heater or piping must be repaired at once to prevent make-up water. WINTERIZING THE MUNCHKIN CONTENDER To winterize the Munchkin Contender, drain the entire system, then apply air pressure to the drain valve and allow air and water to escape from the purge valve (see piping instructions).
GAS-FIRED HEATER Installation Manual PART 2: HOW THE MUNCHKIN CONTENDER OPERATES (CONT’D) powered and combustion air is flowing. 4. Swirl Plate System The Swirl Plate on the gas valve controls the air and gas flow into the burner, which will assure better mixing for improved combustion. 5. Supply water temperature sensor This sensor monitors heater output water temperature (system supply). The control module adjusts the heater firing rate so the outlet temperature is correct. 6.
Installation Manual GAS-FIRED HEATER PART 2: HOW THE MUNCHKIN CONTENDER OPERATES (CONT’D) Super Stor Ultra Indirect Water Heater to get a fast recovery by prioritizing the flow at a higher temperature than may be needed for the central heating circuits (this will require two separate circulators). You must follow the piping, wiring and programming instructions located in the Vision One section of this manual.
GAS-FIRED HEATER Installation Manual PART 3: PREPARE MUNCHKIN CONTENDER LOCATION (CONTINUED) NOTICE The Munchkin Contender Heater gas manifold and controls met safe lighting and other performance criteria when heater underwent tests specified in ANSI Z21.10.3 — latest edition. BEFORE LOCATING THE MUNCHKIN CONTENDER 1. Check for nearby connection to: • System water piping • Venting connections • Gas supply piping • Electrical power 24" FRONT CLEARANCE 2. Check area around heater.
GAS-FIRED HEATER Installation Manual PART 3: PREPARE MUNCHKIN CONTENDER LOCATION (CONTINUED) WARNING The space must be provided with combustion/ventilation air openings correctly sized for all other appliances located in the same space as the Munchkin Contender heater. The heater cover must be securely fastened to the heater to prevent heater from drawing air from inside the heater room. This is particularly important if the heater is located in the same room as other appliances.
GAS-FIRED HEATER Installation Manual PART 3: PREPARE MUNCHKIN CONTENDER LOCATION (CONTINUED) in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers. G.
GAS-FIRED HEATER Installation Manual PART 4: PREPARE MUNCHKIN CONTENDER (CONTINUED) WARNING The wall must be capable of carrying the weight of the heater and its related components. The weights of the heater are approximately: MC-50- 71 lbs. MC-80- 74 lbs. MC-9984 lbs. MC-120Failure to comply with above could result in severe personal injury, death or substantial property damage. ] C. MUNCHKIN CONTENDER WALL MOUNTING INSTRUCTIONS WARNING This heater is heavy and awkward to lift.
GAS-FIRED HEATER Installation Manual PART 5: MUNCHKIN CONTENDER PIPING A. RELIEF VALVE Connect discharge piping to safe disposal location, following guidelines in the WARNING below. WARNING To avoid water damage or scalding due to relief valve operation: • Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a manner that will prevent possibility of severe burns or property damage should the valve discharge.
GAS-FIRED HEATER Installation Manual PART 5: MUNCHKIN CONTENDER PIPING (CONTINUED) CAUTION Undersized expansion tanks cause system water to be lost from relief valve and makeup water to be added through fill valve. Eventual failure can result due to excessive make-up water addition. 2. Expansion tank must be located as shown in Piping Part 5, or following recognized design methods. See tank manufacturer ’s instructions for details. 3.
GAS-FIRED HEATER Installation Manual PART 5: MUNCHKIN CONTENDER PIPING (CONTINUED) concentration and inhibitor level. The system should be tested at least once a year and as recommend by the producer of the glycol solution. Allowance should be made for the expansion of the glycol solution in the system piping. Example 50% by volume solution expands 4.8% in volume for the temperature increase from 32 F to 180 F, while water expands 3% with the same temperature rise. 6.
GAS-FIRED HEATER Installation Manual PART 5: MUNCHKIN CONTENDER PIPING (CONTINUED) The chart below represents the various system temperatures and their respective flows and friction loss through the Munchkin Contender which will aid circulator selection. SYSTEM TEMPERATURE RISE CHART Model MC-50 MC-80 MC-99 MC-120 20˚ǻt Friction Flow Feet GPM 6.5' 5 7.8' 8 9' 10 10' 12 25˚ǻt Friction Flow Feet GPM 4.5' 4 4.7' 6.4 6' 9 7' 9.6 30˚ǻt Friction Flow Feet GPM 3' 3.3 2.9' 5.3 5' 7.
GAS-FIRED HEATER Installation Manual MUNCHKIN CONTENDER PIPING (CONTINUED) CAUTION It is highly recommended that you carefully follow the glycol manufacturer’s recommended concentrations, expansion requirements and maintenance recommendations (pH additive breakdown, inhibitor reduction, etc.). You must carefully figure the additional friction loss in the system as well as the reduction in heat transfer co-efficients. J. ZONING WITH ZONE VALVES 1.
Installation Manual GAS-FIRED HEATER M. CONTENDER PIPING DETAILS Piping symbol legend circulator (w/ isolation flanges) circulator (w/ integral check valve) gate valve pressure reducing valve globe valve diff.
Installation Manual GAS-FIRED HEATER Standard Munchkin Contender ! Heater (zoning with valves) Space heating mode Drawing 1A zone valves see note 6 make-up water P2 closely spaced tees differential pressure bypass valve purge purging valves OFF anti-scald mixing valve Munchkin Contender Heater T/P Super Stor Ultra indirect DHW 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.
Installation Manual GAS-FIRED HEATER Standard Munchkin Contender Heater (zoning with valves) Domestic water heating mode Drawing 1B OFF OFF make-up water OFF OFF zone valves see note 6 P2 closely spaced tees differential pressure bypass valve purging valves anti-scald mixing valve Munchkin Contender Heater T/P Super Stor Ultra indirect DHW 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.
Installation Manual GAS-FIRED HEATER Standard Munchkin Contender Heater Preferred piping (zoning with circulators) Space heating mode Drawing 1C space heating zone circuit see note 6 zone circulators make-up water closely spaced tees purging valves anti-scald mixing valve Munchkin Contender Heater T/P Super Stor Ultra indirect DHW 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.
Installation Manual GAS-FIRED HEATER Standard Munchkin Contender Heater (zoning with circulators) Domestic water heating mode Drawing 1D space heating zone circuit see note 6 zone circulators make-up water closely spaced tees see note 6 purging valves anti-scald mixing valve Munchkin Contender Heater T/P Super Stor Ultra indirect DHW 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.
Installation Manual GAS-FIRED HEATER Multiple Munchkin Contender Heaters Preferred piping (zoning with circulators) Space heating mode Drawing 1E space heating zone circuit see note 6 zone circulators make-up water purging valves closely spaced tees purging valves anti-scald mixing valve cold water Munchkin Contender Heaters T/P T/P P2 outdoor temperature sensor Super Stor Ultra indirect DHW Tank NOTES: 1. This drawing is meant to show system piping concept only.
GAS-FIRED HEATER Installation Manual Multiple Munchkin Contender Heaters Preferred piping (zoning with circulators) Domestic water heating mode Drawing 1F space heating zone circuit zone circulators make-up water purging valves closely spaced tees purging valves anti-scald mixing valve see note 6 cold water Munchkin Contender Heaters T/P T/P Super Stor Ultra indirect DHW Tank NOTES: 1. This drawing is meant to show system piping concept only.
GAS-FIRED HEATER Installation Manual PART 6. MUNCHKIN CONTENDER PIPING WITH OPTIONAL VISION I SYSTEM (DHW PRIORITY WITH OUTDOOR RESET) A. VISION I SYSTEM PIPING It is important that the system piping is done correctly when using the Vision 1 System. Follow the piping diagrams 2A through 3G when piping your Munchkin Contender with Vision I. All general piping practices should still be maintained. B. ZONING WITH ZONE VALVES USING VISION I 1.
Installation Manual GAS-FIRED HEATER D.
Installation Manual optional high limit safety see note 6 OFF OFF Munchkin Contender Heater with optional VISION 1 system (zoning with valves) Domestic water heating mode Drawing 2B OFF GAS-FIRED HEATER zone valves make-up water purge purge OFF see note 6 Munchkin Contender Heater differential pressure bypass valve anti-scald mixing valve P1 DHW temperature sensor (Vision 1 system) OFF T/P P2 outdoor temperature sensor (Vision 1 system) purge Super Stor Ultra! Indirect DHW Tank therma
Installation Manual GAS-FIRED HEATER Munchkin Contender Heater with optional VISION 1 system (zoning with valves) Space heating mode (w/ submixing) Drawing 2C 3-way (manually-set) mixing valve vent low temperature manifold station air handler optional high limit safety see note 6 purge purge make-up water balancing valve see note 6 anti-scald mixing valve differential pressure bypass valve Munchkin Contender Heater cold water DHW temperature sensor (Vision 1 system) P1 OFF T/P outdoor temp
Installation Manual GAS-FIRED HEATER Munchkin Contender Heater with optional VISION 1 system (zoning with circulators) Space heating mode Drawing 3A make-up water zone circulators high limit safety purge closely spaced tees purge see note 6 anti-scald mixing valve Munchkin Contender Heater DHW temperature sensor (Vision 1 system) P1 OFF T/P outdoor temperature sensor (Vision 1 system) P2 purge Super Stor Ultra Indirect DHW Tank thermal trap (w/ drain plug) NOTES: 1.
Installation Manual GAS-FIRED HEATER Munchkin Contender Heater with optional VISION 1 system (zoning with circulators) Domestic water heating mode Drawing 3B make-up water zone circulators high limit safety purge purge closely spaced tees Munchkin Contender Heater anti-scald mixing valve OFF DHW temperature sensor (Vision 1 system) P1 T/P outdoor temperature sensor (Vision 1 system) P2 see note 6 purge Super Stor Ultra Indirect DHW Tank thermal trap (w/ drain plug) NOTES: 1.
Installation Manual GAS-FIRED HEATER Munchkin Contender Heater with optional VISION 1 system (zoning with circulators) Space heating mode (w/ submixing) Drawing 3C 3-way (manually-set) mixing valve vent air handler low temperature manifold station optional high limit safety make-up water purge balancing valve purge see note 6 anti-scald mixing valve Munchkin Contender Heater DHW temperature sensor (Vision 1 system) P1 OFF T/P outdoor temperature sensor (Vision 1 system) P2 purge Super Stor U
GAS-FIRED HEATER Installation Manual Munchkin Contender Heater with optional VISION 1 system (zoning with circulators) Space heating mode (3 fully reset supply temperatures) Drawing 3D medium temperature manifold station vent air handler (higher temp.) vent optional high limit safety low temperature manifold station balancing valves purge make-up water purge see note 6 3-way (manually-set) mixing valve anti-scald mixing valve Munchkin Contender Heater DHW temp.
Installation Manual GAS-FIRED HEATER Drawing 3E Munchkin Contender Heater with optional VISION 1 system (zoning with circulators) Space heating mode (3 different supply temperatures) 3-way manually-set mixing valve vent air handler (higher temp.
Installation Manual GAS-FIRED HEATER Munchkin Contender Heater with optional VISION 1 system Drawing 3F Multiple high temperature priority loads controlled with zone valves high temperature loads low temperature loads OFF make-up water OFF OFF air handler zone circulators optional high limit safety air handler purge closely spaced tees purge multi-zone relay center Munchkin Contender Heater anti-scald mixing valve DHW tank aquastat OFF P1 P2 T/P outdoor temperature sensor (Vision 1 syst
Installation Manual GAS-FIRED HEATER Munchkin Contender Heater with optional VISION 1 system Multiple high temperature priority loads controlled with zone circulators Multiple low temperature load controls with zone circulators high temperature loads Drawing 3G low temperature loads OFF make-up water OFF OFF air handler zone circulators optional high limit safety air handler purge multi-zone relay center purge closely spaced tees Munchkin Contender Heater anti-scald mixing valve DHW tank a
GAS-FIRED HEATER Installation Manual PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL DANGER Munchkin Contender Heater must be vented as detailed in Venting section Part 7. Ensure the exhaust and intake piping comply with these instructions regarding vent system. Inspect finished combustion air intake and exhaust piping thoroughly to ensure all joints are well secured and airtight and comply with all applicable code requirements, as well as with the instructions provided in this manual.
Installation Manual GAS-FIRED HEATER PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED) f. Provide 4 feet horizontal clearance from electrical meters, gas meters, gas regulators, exhaust fans and inlets, relief equipment. In no case shall the exit terminal be above or below the aforementioned equipment unless the 4 foot horizontal distance is maintained. g. Do not locate the exhaust over public walkways where condensate could drip and/or freeze and create a nuisance or hazard. h.
GAS-FIRED HEATER Installation Manual EXHAUST PIPING AROUND OBSTRUCTIONS (SUGGESTED SETUP FOR PIPING AROUND BEAMS IN ORDER TO ELIMINATE CONDENSATION) BUILDING STRUCTURE THE INTAKE VENT CAN BE ROTATED INTO ANY POSITION PIPING LENGTH DETERMINED BY DISTANCE NEEDED TO CLEAR BEAM 1/4" NPT X 1/2" HOSE BARB TUBING MUST FORM A LOOP 6" IN DIAMETER TOP VIEW 1/2" ID CLEAR FLEXIBLE TUBING (LENGTH DETERMINED BY DISTANCE TO CONDENSATE LINE) 1/4" NPT X 1/2" HOSE BARB TO DRAIN LP-171-S Rev.
GAS-FIRED HEATER Installation Manual Location of exit terminals of mechanical draft and direct-vent venting systems. (Reference: National Fuel Gas Code ANSI Z223.1/NFPA 54 2002). Fig. 7-1 Fig. 7-2 Multiple Vent Spacing* *Note: Exhaust must extend out 1 foot Figure 7-4: Multiple Heater Installations Fig.
GAS-FIRED HEATER Installation Manual PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED) minimum difference in equivalent length between the intake air vent pipe and the exhaust vent. E. EXHAUST VENT AND INTAKE AIR VENT SIZING 1. The exhaust vent and intake air vent pipes should be 2" or greater, Schedule 40 or 80. 3. The minimum combined equivalent length is 16 equivalent feet. 2.
GAS-FIRED HEATER Installation Manual PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED) 2. Use only solid PVC, CPVC, or ABS schedule 40 or 80 pipe. FOAM CORE PIPING IS NOT APPROVED. 3. Remove all burrs and debris from joints and fittings. 4. 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 or CPVC pipe and ASTM D2235 for ABS pipe.
Installation Manual GAS-FIRED HEATER PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED) H. CONDENSATE REMOVAL SYSTEM This is a condensing high efficiency appliance, therefore this unit has a condensate removal system. Condensate is nothing more than water vapor, derived from the combustion products, similar to an automobile when it is initially started.
Installation Manual GAS-FIRED HEATER I. DIAGRAMS FOR SIDEWALL VENTING SIDEWALL VENTING WITH KIT 1" MIN. INTAKE (TEE) VENT KIT INTAKE 12" MIN. EXHAUST TOP VIEW EXHAUST (STRAIGHT COUPLING) EXTERIOR WALL TOP VIEW VENT KIT NOTE: EXTENDED VENT RUNS WHEN TRANSITIONING TO A LARGER DIAMETER MUST ALWAYS TAKE PLACE IN A VERTICAL POSITION TO PREVENT CONDENSATE BLOCKAGE. EXTERIOR WALL EXHAUST SUPPORT BRACKETS MUST BE USED ON ALL HORIZONTAL AND VERTICAL PIPING 1" MIN. 12" MIN.
GAS-FIRED HEATER EXHAUST (STRAIGHT COUPLING) 10'-0" MIN. Installation Manual 24" MIN. 10'-0" MIN. 12" OVER MAXIMUM SNOW LEVEL OR 24" WHICHEVER IS GREATER 12" OVER MAXIMUM SNOW LEVEL OR 24" WHICHEVER IS GREATER INTAKE (TEE) SUPPORT BRACKETS MUST BE USED ON ALL HORIZONTAL AND VERTICAL PIPING SUPPORT BRACKETS MUST BE USED ON ALL HORIZONTAL AND VERTICAL PIPING RIGHT SIDE VIEW LP-171-W Rev. 9/20/06 Fig. 7-12 2" roof vent with tee (intake) & coupling (exhaust) RIGHT SIDE VIEW LP-171-X Rev.
Installation Manual GAS-FIRED HEATER PART 8: GAS PIPING WARNING B. GAS PIPING Failure to follow all precautions could result in fire, explosion or death! 1. Run the gas supply line in accordance with all applicable codes. A. GAS CONNECTION 2. Locate and install manual shutoff valves in accordance with state and local requirements. The gas supply shall have a maximum inlet pressure of less than 14" water column (350 mm), ½ pound pressure (3.5 kPa), and a minimum of 3.5" water column. Fig.
Installation Manual GAS-FIRED HEATER PART 8: GAS PIPING (CONTINUED) Contender. It is very important that the gas line is properly purged by the gas supplier or utility. Failure to properly purge the lines or improper line sizing, will result in ignition failure. This problem is especially noticeable in NEW LP installations and also in empty tank situations. This can also occur when a utility company shuts off service to an area to provide maintenance to their lines.
GAS-FIRED HEATER Installation Manual PART 9: FIELD WIRING WARNING ELECTRICAL SHOCK HAZARD — For your safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death. NOTICE Wiring must be N.E.C. Class 1. If original wiring as supplied with heater must be replaced, use only TEW 105 °C wire or equivalent.
GAS-FIRED HEATER Installation Manual PART 9: FIELD WIRING (CONTINUED) Fig. 9-1 LP-171-Q1 Rev. 12/4/07 Fig. 9-2 LP-171-Q2 Rev. 12/4/07 Fig. 9-3 LP-171-Q3 Rev. 12/4/07 Fig. 9-4 LP-171-Q4 Rev.
GAS-FIRED HEATER PART 9: FIELD WIRING (CONTINUED) Fig.
GAS-FIRED HEATER Installation Manual PART 10: FIELD WIRING – VISION 1 OPTION Outdoor Sensor Function The user can program the desired supply temperature based on the heat transmitter (Baseboard, Radiant Floor, Air Handler) that will be used in the installation. Once the outdoor sensor (Light Green Wires) is connected to the control board, the water temperature of the heater will adjust to run the heater more efficiently and provide greater comfort to the living space.
GAS-FIRED HEATER Installation Manual PART 11. START-UP PREPARATION A. CHECK/CONTROL WATER CHEMISTRY WARNING Do not use petroleum-based cleaning or sealing compounds in heater system. Damage to elastomer seals and gaskets in system could occur, resulting in substantial property damage. Water pH between 6.0 and 8.0 1. Maintain heater water pH between 6.0 and 8.0. Check with litmus paper or have chemically analyzed by water treatment company. 2.
GAS-FIRED HEATER Installation Manual PART 11. START-UP PREPARATION (CONTINUED) WARNING Eliminate all system leaks. Continual fresh make-up water will reduce heater life. Minerals can build up in the heat exchanger, reducing heat transfer, overheating heat exchanger, and causing heat exchanger failure. 5. The system may have residual substances that could affect water chemistry. After the system has been filled and leak tested, verify water pH and chlorine concentrations are acceptable.
GAS-FIRED HEATER Installation Manual PART 11. START-UP PREPARATION (CONTINUED) G. CONDENSATE REMOVAL 1. The Munchkin Contender is a high efficiency condensing heater, there, the unit has a condensation drain. Condensate is nothing more than water vapor, derived from combustion products, similar to an automobile when it is initially started. The condensation is slightly acidic (typically with pH of 3 to 5) and must be piped with the correct materials.
GAS-FIRED HEATER Installation Manual PART 12. START-UP PROCEDURE (CONTINUED) A. OPERATING INSTRUCTIONS Remove Munchkin Contender Heater cover. If you smell gas, STOP. Follow listed safety instructions. If you do not smell gas, follow the next steps. 1. Turn on all electric power to appliance. 2. Adjust the temperature setpoint of the Munchkin Contender Heater if desired. The factory default setting is 180°. If changes are ncessary follow “Adjusting The Munchkin Setpoint” in this section. 3.
Installation Manual GAS-FIRED HEATER PART 12. START-UP PROCEDURE (CONTINUED) Function Value d4 — Not used d5 — Actual Temperature from the outdoor sensor. (Vision option.) d6 — Actual Fan speed multiplied by 10 (Example: If fan speed displayed is |410| RPM x 10 = 4100 actual fan speed) d7 — Actual Ionization current read from Flame Rectification probe d8 — Actual Status of the Central Heating Circulator Off = |0|, On = |1|. (Vision option.
GAS-FIRED HEATER Installation Manual PART 13: START-UP PROCEDURES WITH THE VISION 1 OPTION (CONTINUED) B. VISION 1 PROGRAM ACCESS To start, press down and hold the {S/3} and {S/4} simultaneously for three seconds. You will notice that the display will change to |000|. Then, with your {S1/-} key on the display press down until you see |925|. This is the pass code. To confirm that the pass code is correct, you will need to press and hold the {S3/Program} for 1 second to confirm.
GAS-FIRED HEATER Installation Manual PART 13: START-UP PROCEDURES WITH THE VISION 1 OPTION (CONTINUED) Default Function Function Value Description 14 30 Min. Allows the installer to set the Maximum run time for the Indirect Fired Water Heater and the Minimum run time for Central Heating. Range 0 to 60 Minutes 15 0 Bus address (0=zone master 1–8 — cascade slave) (Not currently used.
Installation Manual GAS-FIRED HEATER PART 13: START-UP PROCEDURES WITH THE VISION 1 OPTION (CONTINUED) CENTRAL HEATING CURVE Factory Default 201˚ CENTRAL HEATING CURVE Plot your Curve 212 212 203 203 194 194 185 185 FUNCTION 9 176 176 DEFAULT RESET CURVE 149 131 122 113 104 95 FUNCTION 11 77 FUNCTION 10 86 68 59 50 SUPPLY OUTLET TEMPERATURE (F) 167 158 FUNCTION 8 SUPPLY OUTLET TEMPERATURE (F) 167 158 149 131 122 113 104 95 86 77 68 59 50 41 41 32 32 -59 -41 -24 -9 0 9 2
GAS-FIRED HEATER Installation Manual PART 14: TROUBLESHOOTING A. MUNCHKIN ERROR CODE WARNING An error code may occur in the installation of the Munchkin Contender. This condition may lead to a lock out condition of the controller, which will need to be manually reset through the S4/Reset button. These temporary codes will help the installer correct the problem before going into a lock out condition, which will require a manual reset.
Installation Manual GAS-FIRED HEATER PART 14: TROUBLESHOOTING (CONTINUED) Table 14-2: 925 Control Board FAULT Codes Code Description F00 High Limit Exceeded. F01 Vent Temperature Limit Switch Exceeded. F02 F03 Interrupted or Shorted Supply (Outlet) Thermister. Interrupted or Shorted Return (Inlet) Thermister. F05 Supply (Outlet) Temperature exceeds 230°F. F06 Return (Inlet) Temperature Exceeded 230°F.
GAS-FIRED HEATER Installation Manual PART 14: TROUBLESHOOTING (CONTINUED) Resistance Tables Outdoor Sensor (7250P-319) Heater Sensor (7250P-059) Outside Temperature (°F) Resistance (ohms) Indirect Sensor (7250P-320) Heater and Indirect Temperature (°F) Resistance (ohms) –22 171800 32 32550 –13 129800 41 25340 –4 98930 50 19870 5 76020 59 15700 14 58880 68 12490 23 45950 77 10000 32 36130 86 8059 41 28600 95 6535 50 22800 104 5330 59 18300 113 4372 68 14770 1
GAS-FIRED HEATER Installation Manual PART 15: MAINTENANCE (CONTINUED) WARNING The combustion chamber insulation in this product contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group1).”: Avoid breathing dust and contact with skin and eyes.
Installation Manual GAS-FIRED HEATER PART 15: MAINTENANCE (CONTINUED) 1 2 5 4 HEATER LIMIT FUSE CONNECTION 3 6 8 7 9 11 10 16 13 12 21 10 14 18 15 17 22 19 20 23 24 Item Description # 1 Composite Module Part # 7500P-010 (MC50) REPLACEMENT PARTS Item Description # 14 Gasket (Air Channel to Combustion Blower) 7500P-012 (MC80) 15 Combustion Blower (w/Screws) 7500P-031 7500P-014 (MC99/MC120) 16 Screws M5 x 14MM (Combustion Blower) 7250P-254 7250P-644 2 Ceramic Target Wall 7250P-16
Installation Manual GAS-FIRED HEATER PART 15: MAINTENANCE (CONTINUED) 1 2 6 8 10 7 3 9 4 11 5 12 13 REPLACEMENT PARTS Description Item # 14 15 16 17 18 19 Part # 1 2 3 4 Concentric Flue Outlet (w/Gasket) Gasket (Concentric Flue Outlet) PVC Pipe (2" Sch. 40 - 12" Long) Flue Adapter 7500P-025 7500P-008 7500P-097 7500P-007 5 6 Flue ECO O-Ring (S.S. Barbed Fitting) 7500P-002 7250P-152 7 S.S.
Installation Manual GAS-FIRED HEATER PART 15: MAINTENANCE (CONTINUED) 1 2 21 3 5 9 6 10 4 7 8 11 12 11 13 14 16 17 15 20 18 19 REPLACEMENT PARTS Item Description # Item Description # 1 Cover Filler Plate(w/Screws) 2 Blocked Vent Pressure Switch 3 Screws 8-32x3/8 (Blocked Vent Pressure Switch) 7500P-047 4 Control Board (w/Screws) 7250P-317 15 Lip Style Grommet - 1" 7500P-050 5 5 Pin Wiring Harness (location) 7500P-055 16 Lip Style Grommet - 1/2" 7500P-049 6 9 Pin Wiring Harnes
Notes: If necessary convert the heater to the proper type of gas (always use proper kit) 8) Convert the heater ____ppm CO Verify Combustion settings after gas conversion, Carbon Monoxide Mail in the conversion registration ____% CO2 ____de ____*8 ____ µA Verify Combustion settings after gas conversion, Carbon Dioxide Locate the stickers in the appropriate locations on the heater Verify safety and operation of the Super-Stor Indirect water heater, record setttings Record heating curve (with optio
67 Check condition of all vent pipe and joints Check gas piping, test for gas leaks and signs of aging, make sure all pipes are supported properly.
Disconnect condensate cup, clean out dirt, fill with water to level of outlet and re-install ( Note: you must verify the flow of condensate, making sure that the cup is connected properly during final inspection.) Condensate Cup Check piping for leaks, and verify they are all properly supported Check gas pipe for leaks Check operation , check for signs of leakage, replace if corroded Check wiring, verify through ohms reading (see chart part 14 Fig.
MAINTENANCE NOTES 69
MAINTENANCE NOTES 70
© 2007, 2006 Heat Transfer Products, Inc. LP-171 REV.
Munchkin Contender Wall Mounting Installation Template WARNING This heater is heavy and awkward to lift. It is recommended and safer to install the heater with two people. Use caution as to not drop this heater which could cause personal injury. Verify that the heater is securely mounted before leaving the heater unsupervised.
