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EI onex Installation And Maintenance Manual

Gas-fired condensing hot water boiler
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OXIOM-3
Installation and maintenance
instructions for gas-fi red condensing
hot water boiler
ASME
certifi ed
INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE BOILER.

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Summary of Contents for EI onex

  • Page 1 OXIOM-3 Installation and maintenance instructions for gas-fi red condensing hot water boiler ASME certifi ed INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE BOILER.

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS WARNING: If the information in these AVERTISSMENT: Assurez vous de bien instructions is not followed exactly, a fi re suivre les instructions données dans or explosion may result causing property cette notice pour réduire au minimum damage, personal injury or death. le risque d’incendie ou d’explosion ou pour éviter tout dommage matériel, toute blessure ou la mort...
  • Page 3 62403535.R00 SAFETY INSTRUCTIONS...
  • Page 4 SAFETY INSTRUCTIONS  WARNING!!! These instructions must be read In the event of a breakdown and/or malfunction prior to installation. If the information in these of the boiler, turn off the unit and do not make any instructions is not followed exactly, a fi re or attempt to repair it.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS SAFETY INSTRUCTIONS ..................................2 TABLE OF CONTENTS ..................................5 1 - INSTALLATION - CODE REQUIREMENTS ............................. 7 1.1 - National installation legislation ..............................7 2 - GENERAL INFORMATION ................................7 2.1 - Key to symbols used ................................7 2.2 - Description of models: ................................
  • Page 6 TABLE OF CONTENTS 11.2 - General warnings concerning gas supply ..........................38 11.3 - Confi rming the boiler’s gas type ............................38 11.4 - Gas type conversion ................................38 11.5 - Start-up ....................................38 11.6 - Ignition control testing ................................39 11.7 - Gas supply pressure checking and adjustment ........................

  • Page 7: Installation - Code Requirements

    1 - INSTALLATION - CODE REQUIREMENTS - Where required by the authority 1.1 - National having jurisdiction, the installation installation must conform to the Standard for Controls and Safety Devices for legislation Automatically Fired Boilers, ANSI/ ASME CSD-1 - The installation must conform to the requirements of the authority having jurisdiction or, in the absence of such requirements, to the latest edition of...

  • Page 8: Main Components

    3 - MAIN COMPONENTS 1 - P/N 61206001 - Automatic air vent 2 - P/N 61405160 - Air intake and fl ue gas discharge fi tting (venting system) 3 - P/N 62111015 - U7 fl ue gas temp. sensor and fl ue safety switch 12 - Cold water connection (not present on 160B and 160OB models) 4 - P/N 62201005 - Expansion tank 13 - Heating return connection...
  • Page 9 3 - MAIN COMPONENTS 22 - Combustion analysis tap (For P/N see Section 15) 23 - P/N 62111016 - U1 supply temperature sensor 24 - Burner window (For P/N see Section 15) 25 - Air/gas manifold (For P/N see Section 15) 26 - P/N 62111017 - U6 high temperature limit sensor 27 - Flue gases back fl...

  • Page 10: Function Overview

    4 - FUNCTION OVERVIEW Key to fi gure 2: 1 = boiler model 160C or 160OC 2 = automatic air vent 3 = air intake 4 = fl ue gases discharge 5 = sealed combustion chamber 6 = expansion tank 7 = burner 8 = fan 9 = gas valve...
  • Page 11 4 - FUNCTION OVERVIEW Key to fi gure 3: 1 = boiler model 160B and 160OB 2 = automatic air vent 3 = air intake 4 = fl ue gases discharge 5 = sealed combustion chamber 7 = burner 8 = fan 9 = gas valve 10 = condensate discharge trap 14 = pressure gauge...

  • Page 12: Intended Use And Functions Of The Boiler

    4 - FUNCTION OVERVIEW  4.1 - Intended use - 160OC. This boiler is equal to the Refer to fi gure 8 for minimum 160C model, but is intended for clearance distances for installation and functions of outdoor installation. and future maintenance. ...

  • Page 13: Effi Ciency Up To 98

    4 - FUNCTION OVERVIEW 4.3 - Effi ciency up to 98% When the outdoor reset is activated (an outside sensor is connected), this boiler is designed to always work at the maximum effi ciency. It will automatically change the supply temperature in relation with the outdoor temperature (Outdoor reset).

  • Page 14: Characteristic Curves Of Heating System's Residual Head

    4 - FUNCTION OVERVIEW 4.4 - Characteristic curves of heating system’s residual head 160C and 160OC boilers are fi tted with a Grundfos circulator pump. The head available to supply fl ow through the heating system at the boiler connections is shown in graph form in fi...

  • Page 15: Installation - Mounting & Gas And Water Connections

    5 - INSTALLATION - Mounting & gas and water connections 5.1 - Clearances for installation and servicing for models Figure 8 shows the clearances required for installation and servicing. NOTE: Service clearances are not mandatory, but are recommended to ensure ease of service should it be required.

  • Page 16: Mounting The Boiler

    5 - INSTALLATION - Mounting & gas and water connections 5.4 - Mounting the boiler Refer to fi gure 10: 1. place the cardboard template, provided with the boiler, against the wall; 2. ensure that the template is plumb and the screw holes line up with the wall studs;...

  • Page 17: Condensate Disposal

    5 - INSTALLATION - Mounting & gas and water connections  5.6 - Condensate be connected to the domestic waste disposal system by means disposal CAUTION!!! The condensate of an appropriate trap capable of drainage system is designed to preventing the pressurization of the empty all the condensate produced WARNING! The condensate trap condensate system and the return...

  • Page 18: Supply And Return Piping

    5 - INSTALLATION - Mounting & gas and water connections  5.8 - Supply and 5.10 - Use of Install a metallic mesh fi lter on the return pipe to prevent any residue return piping glycol and other from the system returning to the boiler.

  • Page 19: Gas Supply Piping

    5 - INSTALLATION - Mounting & gas and water connections  5.12 - Gas supply Before installation a thorough internal cleaning of the gas supply piping line should be performed. Figure 11 shows the positioning of the gas connection on the heater. WARNING!!! Check that the type ...

  • Page 20: Suggested Piping And Wiring Connections For The 160C And 160Oc Versions Boiler

    5 - INSTALLATION - Mounting & gas and water connections 5.14 - Suggested piping and wiring connections for the 160C and 160OC versions Boiler Figure 15 shows the suggested piping and wiring connection for boiler models 160C and 160OC. All component listed below, except the fl...

  • Page 21: Suggested Piping And Wiring Connections For The 160B And 160Ob Versions Boiler

    5 - INSTALLATION - Mounting & gas and water connections 5.15 - Suggested piping and wiring connections for the 160B and 160OB versions Boiler Figure 16 shows the suggested piping and wiring connections for boiler models 160B and 160OB. All components listed below, except the fl...

  • Page 22: Installation - Electrical Connections

    6 - INSTALLATION - Electrical connections 6.1 - Electrical connections: overview WARNING!!! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation! ATTENTION!!! Au moment de l’entretien des commandes, étiquetez tous les fi ls avant de les débrancher.

  • Page 23: Connecting The Power Supply Cable

    6 - INSTALLATION - Electrical connections Indirect water heater sensor Outdoor sensor Room thermostat 120Vac Line central heating Neutral 120Vac Line domestic hot water 120Vac LINE (HOT) External three way NEUTRAL valve for indirect GROUND water heater Figure 18 - Electrical connections 6.2 - Connecting 6.4 - Thermostat 10.

  • Page 24: Installing The Outdoor Temperature Sensor (Optional)

    6 - INSTALLATION - Electrical connections NOTICE! the maximum room 2. use a two conductor cable with 3. using the keys, thermostat cable length permitted a minimum cross section of # 18 change the parameter value from is 65 ft (20 m). For longer lengths, AWG.

  • Page 25: Installation - Indirect Storage Tank Connections

    7 - INSTALLATION - Indirect storage tank connections 7.1 - Connecting the boiler to an indirect storage tank All boilers listed in this manual, can be connected to an indirect storage tank as follows (the water and electrical connections must be made per fi...
  • Page 26 7 - INSTALLATION - Indirect storage tank connections A = Front cover of the electrical box B = Plastic spring to open the electrical box C = Direction to open the electrical box D = Switches for the functional setting of the boiler Figure 21 - Control board and junction box board details...

  • Page 27: Installation - Vent & Combustion Air

    8 - INSTALLATION - Vent & combustion air 8.1 - Removing (d) Place in operation the appliance (c) Dans la mesure du possible, being inspected. Follow the lighting fermer toutes les portes et les of a boiler from a instructions. Adjust thermostat so fenêtres du bâtiment et toutes appliance will operate continuously.

  • Page 28: Venting Systems

    8 - INSTALLATION - Vent & combustion air   8.2 - Venting The vent system shall be installed The minimum clearance so as to prevent the accumulation measurement between two vent systems of condensate. When horizontal end terminations of this kind of vent runs exceed 5 ft (1.5m), they boilers shall be not less than 18"...

  • Page 29: Flue Terminal Location In Compliance With Can/Csa B149

    8 - INSTALLATION - Vent & combustion air 8.4 - Flue terminal location in compliance with CAN/CSA B149 Vent Termination Minimum Clearances A = 12” clearances above grade, veranda, porch, deck or balcony B = 12” clearances to window or door that may be opened D = 18”...

  • Page 30: Installation - Split Venting System

    9 - INSTALLATION - Split venting system 9.1 - Split system (polypropylene) or AL29-4C (UL 1738/UL C 636) system NOTE:This vent system is not available for 160OC and 160OB models The boiler is not supplied with the fi ttings needed for separate vent and combustion air systems.
  • Page 31 9 - INSTALLATION - Split venting system  Horizontal vent systems should be as short and straight as possible. The vent system must be both gas tight and watertight. All seams and joints must be joined and sealed in accordance with the vent system manufacturer’s instructions.

  • Page 32: Split System Components

    9 - INSTALLATION - Split venting system 9.2 - Split system components Some of the most commonly used components for installing the Split polypropylene vent and combustion air systems are listed below: 62617286 - No. 1 - Split adaptor 80/80 PP 62617236 - No.

  • Page 33: Split System Components

    9 - INSTALLATION - Split venting system 9.3 - Split system Heatfab Pro Tech Z FLex Terminal Type Saf T Vent FasNSeal Part Number components Part Number Part Number Elbow Termination w/ Screen 9314TERM 2SVSTEX0390 Some of the most commonly used components for installing the Split Tee Termination w/ Screen 9330TEE...

  • Page 34: Installation - Coaxial Venting System

    10 - INSTALLATION - Coaxial venting system 10.1 - Coaxial system The boiler is not supplied with the fi ttings needed for connecting a coaxial vent/combustion air system. A special kit must be ordered to connect the boiler with the Coaxial polypropylene vent.

  • Page 35: Coaxial System Components

    10 - INSTALLATION - Coaxial venting system 10.2 - Coaxial system components The following coaxial polypropylene vent and combustion air system components are available, on request, for installing the Coaxial system 62617234 - No. 1 - In line 90° PP coaxial M/F elbow 62617252 - No.

  • Page 36: Coaxial System Components

    10 - INSTALLATION - Coaxial venting system 10.3 - Coaxial Heatfab Pro Tech Z FLex Terminal Type Saf T Vent FasNSeal Part Number system Part Number Part Number Elbow Termination w/ Screen 9314TERM 2SVSTEX0390 components Tee Termination w/ Screen 9390TEE FSTT3 2SVSTTF-3 Some of the most commonly used...

  • Page 37: Operating

    11 - OPERATING 11.1 - Operating 11.1.2 - Filling the 11.1.3 - Filling the condensate trap heating system Before starting the boiler, the following must be done. The condensate trap is positioned WARNING!!! Never use non- inside the boiler as shown in fi gure 1, 11.1.1 - User approved additives or toxic boiler item “46”.

  • Page 38: Filling The Domestic Hot Water Heat Exchanger (160C And 160Oc Models Only)

    11 - OPERATING  11.1.4 - Filling the are available for this purpose. The That the gas supply system is instruction inside the conversion kit provided with all the safety devices domestic hot water must be followed. and controls required under current national and local codes.

  • Page 39: Ignition Control Testing

    11 - OPERATING 11.6 - Ignition 6. after 40 seconds, the display must 7. turn the power switch to on and show L01; generate a heat demand by turning control testing knob “33” shown in fi gure 1 to its 7.

  • Page 40: Check The Combustion Air Pressure

    11 - OPERATING 11.8 - Check the combustion air pressure The boiler has a factory-set air/gas ratio. The pressure of the gas at the burner is indirectly controlled by the blower. The combustion air pressure must be checked as follows while refering to fi gures 36 and 37: 1.

  • Page 41: Checking And Adjusting Co2 Levels

    11 - OPERATING 11.9 - Checking Now check and, if necessary, 3. press the keys adjust high fi re CO2: for more and adjusting CO2 6. press the than 10 seconds, until the the display will levels display shows show a blinking if a call for Section 14 lists the correct CO2 heat has been...

  • Page 42: Checking And Adjusting Co2 Levels Without Co2 Meter

    11 - OPERATING 11.9.1 - Checking To do so, follow section 11.9 and 11.11 - Domestic instead of comparing the CO2 value, and adjusting CO2 hot water fl ow rate compare the right side of the display (ionisation current value) with the levels without CO2 adjustment (160C corrisponding “ionisation current”...

  • Page 43: Use

    12 - USE 1 - Display of the parameters 2 - Display of the paramenters value. 3 - Light indicates the burner state: Light-on = Burner ON; Blinking = Burner OFF. 4 - Light indicating DHW service: Light-on = DHW service ON; Light-off = DHW service OFF.

  • Page 44: Start-Up Procedure

    12 - USE 12.4 - Start-up 12.5 - Summer 12.7 - Adjusting the procedure mode domestic hot water temperature 1. Open the manual shutoff gas valve; To disable the heating functions for 2. switch on electric power to the a prolonged period, leaving only the The domestic hot water temperature boiler;...

  • Page 45: Heating System Type Selection

    12 - USE 12.10.1 - Outdoor 12.10.2 - Outdoor reset applications reset adjustment CAUTION!!! If the boiler is installed in a low temperature precautions Outdoor reset is a sophisticated system follow the settings way to maximize comfort and boiler specifi ed in section 5.9 or the When making adjustments to change effi...

  • Page 46: Outdoor Reset: Setting Parameters

    12 - USE 12.10.3 - Outdoor 12.10.4 - Outdoor 12.10.6 – Outdoor reset: setting reset: zone reset with room parameters adjustments compensation Refer to section 12.16 and set: The default values previously While in the “Installers’ Menu” suggested are for boilers using an (Section 12.17) set the = “The angle of the curve”, outdoor temperature sensor installed...
  • Page 47 12 - USE OA = Slope of the line Ob = Minimum heating temperature Oc = Maximum heating temperature Outside temperature (°C) br = “Fix point” of the angle Outside temperature (°F) fulcrum of the line b = parallel shift of the line (adjusted by the heating knob, item “7”...

  • Page 48: Boiler Switch Settings

    12 - USE 12.11 - Boiler switch settings CAUTION!!! Improper setting of these switches could cause the The control board shown in fi gure boiler to malfunction resulting in 1, item “14”, and fi gure 22, contains improper system performance. a series of switches that allow the Only a qualifi...

  • Page 49: Users' Menu

    12 - USE 12.16 - “Users’ NOTE: If no key is pressed for 3. use the keys, to more than 60 seconds, the menu” change the value of the selected control automatically exits the parameter. “Users’ menu”. Any parameter When entering the “Users’ menu”, the change not saved using the 4.

  • Page 50: Installer's Menu

    12 - USE When the last parameter has 12.17 - “Installer’s 1. press the button down been reached and the for 12 seconds until the menu” button pressed, the parameter is displayed; display will stop blinking indicating an exit from the menu. 2.
  • Page 51 12 - USE Continued PARAMETER DESCRIPTION INFORMATION ON DISPLAY ITEM “2” of fi gure 40 BTU input for heating service Adjustable according to the instructions of section 11.10 Heating service funtioning mode Can be changed: 00 = thermostatic adjustment (sse section 12.8); 01 = outdoor reset (see section 12.10);...

  • Page 52: Diagnostics

    12 - USE 12.18 - Diagnostics During the normal operation of the boiler, the display, of fi gure 40, continually shows the operating status of the boiler as shown below (see also section 16): PARAMETER PARAMETER REFERENCE DISPLAY READ OUT (ITEM “2”, FIGURE 40) DISPLAY (ITEM “1”, FIGURE 40) Boiler in stand-by mode or pause (no request for heating...

  • Page 53: Diagnostics: "L" Lock-Outs

    12 - USE 12.18.1 - Diagnostics: “L” lock-outs Lock-out “L” Checks to make Solutions description Code No fl ame detected after Check: a-If the gas supply pressure is incorrect, it must be adjusted to three ignition attempts. a-correct gas supply pressure (see the correct pressure;...
  • Page 54 12 - USE 12.18.1 - Diagnostics: “L” lock-outs (continued) Lock-out “L” Solutions Controls description Code Program error Replace the power control board Flame sensed for 10 Call technical service seconds, after the closure of the gas valve Flame sensed before Call technical service opening of the gas valve.

  • Page 55: Diagnostics: "E" Blocking Errors

    12 - USE 12.18.2 - Diagnostics: “E” blocking errors Blocking “E” Checks to make Solutions description Code If the sensor resistance does not correspond, it must be U1 boiler temperature Check that the electrical resistance of replaced; sensor circuit interrupted. the sensor corresponds with the graph in if the electrical circuit is damaged, it must be repaired;...
  • Page 56 12 - USE 12.18.2 - Diagnostics: “E” blocking errors (continued) Blocking “E” Checks to make Solutions description Code If the sensor resistance does not correspond, it must be U8 return temperature Check that the electrical resistance of replaced; sensor short-circuited the sensor corresponds with the graph in if the electrical circuit is damaged, it must be repaired;...

  • Page 57: Maintenance

    13 - MAINTENANCE 13.1 - General 13.2 - Removing the precaution casing In order to remove the casing, follow WARNING!!! Never store combusti- the steps below while refering to ble materials, gasoline or any fi gure 43: product containing fl ammable 1.

  • Page 58: Cleaning The Burner And Primary Heat Exchanger, Fl Ue Gas Side

    13 - MAINTENANCE 13.3 - Cleaning the 9. use a vacuum cleaner to remove 11. using only water, wash the inside any unburned residue from the of the combustion chamber, detail burner and primary combustion chamber, detail “H” in “H” in fi gure 44. The water, will drain fi...

  • Page 59: Correct Positioning Of The Ignition And Fl Ame Detection Electrodes

    13 - MAINTENANCE 13.4 - Correct positioning of the ignition and fl ame detection electrodes For the boiler to work properly the electrodes must be positioned as shown in fi gure 45:  the distance between the ignition electrodes “A” and “B”, must be between 0.08 in (2 mm), and 0.10 in (2.5 mm);...

  • Page 60: Condensate Trap Cleaning

    13 - MAINTENANCE 13.6 - Condensate trap cleaning The condensate trap must be cleaned every year. Follow the steps below to properly clean the condensate trap and its associated components while refering to fi gure 46: 1. run the fan as described in section 13.12.2, to minimize the amount of liquid present in the trap, item “A”;...

  • Page 61: Circulator Pump Motor Replacement (Only For 160C And 160Oc Models)

    13 - MAINTENANCE 13.7 - Circulator pump motor replacement (only for 160C and 160OC models) To replace the circulator pump follow the steps below while, refering to fi gure 47: 1. follow the steps in section 13.10 to isolate and drain the water from the boiler;...

  • Page 62: 3-Way Valve Removal (Only For 160C And 160Oc Models)

    13 - MAINTENANCE 13.9 - 3-way valve removal (only for 160-C and 160OC models) The 3-way valve, details “M” and “Q” in fi gures 48 and 49, directs hot water produced by the primary heat exchanger to the heating circuit or to the secondary heat exchanger for the production of D.H.W.

  • Page 63: Draining The Heating Side Of The Boiler

    13 - MAINTENANCE 13.10 - Draining the 13.11 - Draining the 13.12.3 – Minimum heating side of the domestic hot water and maximum boiler side of the boiler output To drain the heating side of the boiler To drain the domestic hot water side The boiler can be run at its minimum follow the steps below: of the boiler follow the steps below:...

  • Page 64: Minimum And Maximum Output

    13 - MAINTENANCE 13.13 - Water and 13.14 - Outdoor 13.12.4 – Checking fl ue temperature temperature sensor the fl ame current sensor (optional) While running at the minimum and maximum output described in section The boiler has a number of sensors An outdoor temperature sensor 13.12.3, the display will show the letter that measure temperature.

  • Page 65: Water And Fl Ue Temperature Sensor

    13 - MAINTENANCE 13.15 - Functional LEGEND: ALA - Alarm output U2 - Domestic hot water temperature wiring diagram CM - Power control board sensor U3 - Domestic cold water temperature CR - Remote command (only for 160OB WARNING!!! Label all wires prior sensor and 160OC models) to disconnection when servicing...

  • Page 66: Functional Wiring Diagram

    13 - MAINTENANCE 13.16 - Multiwire LEGEND: ALA - Alarm output U2 - Domestic hot water temperature wiring diagram CM - Power control board sensor U3 - Domestic cold water temperature CR - Remote command (only for 160OB WARNING!!! Label all wires prior sensor and 160OC models) to disconnection when servicing...

  • Page 67: Technical Data

    14 - TECHNICAL DATA MODEL GC-160-B; GC-160-C, OX-160-B; OX-160-C SS-160-C; Country of destination USA and Canada Type of boiler Direct Vent boiler Category of discharge chimney CSA certifi cate N° 2045300 (114696) Maximum Heat input Btu/hr 160,000 Minimum heat input Btu/hr 30,000 Effi...
  • Page 68 15 - SPARE PARTS 1 - 60504206 CABLE UL IGNITOR CONN 90° L155 19 - 60801043 SCREW SELFTAPPING 3.9 X 9.5 CROSS HEAD 2 - 60802005 NUT ZINC COATED 6MA 20 - 62630136 SIPHON 3 - 60320001 SILICONE PIPE D 4X8 21 - 60801100 SCREW SELFTAPPING 2.9 X 6.5 CROSS HEAD 4 - 61405036 TEE FOR DRY WATER CONDENSATION 22 - 60806020 SPRING 28,7...

  • Page 69: Spare Parts

    15 - SPARE PARTS 37 - 61206001 AUTOMATIC AIR VENT 68 - 60702056 O-RING 165 NBR 3,53 X 61,91 38 - 60101119 3/8G MALE to 1/8NPT FEMALE BUSHING 69 - 61901029 FAN 45 KW USA 39 - 60703033 GASKET EPDM D38 F20 SP6 70 - 61405174 BACK FLUE-GASES PREVENTER 40 - 60411085 45xx WALL MOUNTING BRACKET 71 - 60702051 O-RING 3825 SIL 2,62 X 209,22...
  • Page 70 15 - SPARE PARTS 98 - 62102009 PRESSURE GAUGE DIAM.38 - 1/4” PSI 99 - 60506019 GAS VALVE SERVICE SWITCH 100 - 61405184 BASE ELECTRICAL BOX 101 - 61405186 FAIRLEAD SX 102 - 61405188 FAIRLEAD DX 103 - 62110076 POWER CONTROL BOARD PHC 120V 104 - 60801138 SCREW 4X8 ZINC TC-CR DIN4042...
  • Page 71 15 - SPARE PARTS Bottom side of the 160-B model 147 - 60101225 CONNECTION BRASS 1/2P TO 1P 148 - 60802018 3/4" NUT 149 - 60801135 SCREW 6X8 ZINC TC-CR DIN7985 150 - 60310002 COPPER PIPE 1"GAS TO 3/4" 151 - 62623248 SUPPLY PIPE FOR ONLY HEATING 152 - 61408008 HYDRONIC SUPPLY GROUP ONLY HEATING 153 - 60101124 1/2P CAP 154 - 60101193 1/2"-1/4"...
  • Page 72 15 - SPARE PARTS External jacket for 160OB and 160OC models...

  • Page 73: Read Out Flow Chart

    16 - READ OUT FLOW CHART Push and hold the RESET Push and hold together the + and - key for a time, in seconds, keys, for a time, in seconds, indicated indicated by the number by the number Push and release the - key Push and release the RESET Push and release the + key Overrides menu (see section 13.13)

  • Page 74: Read Out Flow Chart

    16 - READ OUT FLOW CHART To enter this menu you must: 1. turn the main electrical supply Off; 2. move the switch No. 7 (see fi gure CAUTION!!! Changing 22, item “D”) to the ON position; these parameters could cause the 3.

  • Page 76: Warranty

    17 - LIMITED CONDENSING WATER HEATER WARRANTY WHAT DOES THIS LIMITED WARRANTY d. Any failed component of the water heater system not manufactured as part of the water heater. COVER? e. Any water heater altered without prior written approval This limited warranty covers the Heat Exchanger for leakage, from the manufacturer.

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