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599 Hill Street West
Fergus, ON Canada N1M 2X1
www.johnwoodwaterheaters.com
1-888-479-8324
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
•
Do not try to light any appliance.
•
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
performed by a
service agency or the gas supplier.
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
PRINTED 0614
COMMERCIAL GAS WATER HEATERS
and
service
must
qualified
installer,
(A)JWSH100150 THRU (A)JWSH100250
be
Instruction Manual
SERIES 200 & 201
INSTALLATION - OPERATION - SERVICE
- MAINTENANCE - LIMITED WARRANTY
CANADIAN MANUAL
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
MODELS
327739-000
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Summary of Contents for John Wood (A)JWSH100150
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Page 1: Instruction Manual
Instruction Manual COMMERCIAL GAS WATER HEATERS MODELS (A)JWSH100150 THRU (A)JWSH100250 SERIES 200 & 201 599 Hill Street West INSTALLATION - OPERATION - SERVICE Fergus, ON Canada N1M 2X1 - MAINTENANCE - LIMITED WARRANTY www.johnwoodwaterheaters.com CANADIAN MANUAL 1-888-479-8324 WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. -
Page 2: Table Of Contents
TABLE OF CONTENTS SAFE INSTALLATION, USE AND SERVICE.......... 3 Sidewall Termination Installation............26 APPROVALS ..................3 Polypropylene Installations .............. 27 AL29-4C ® Vent Installations ............28 GENERAL SAFETY INFORMATION ............4 Precautions ..................4 Concentric Termination Installation ..........29 Grounding Instructions ..............4 Low Profile Vent installation ............. -
Page 3: Safe Installation, Use And Service
SAFE INSTALLATION, USE AND SERVICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. -
Page 4: General Safety Information
GENERAL SAFETY INFORMATION PRECAUTIONS HYDROGEN GAS FLAMMABLE DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN EXPOSED TO FLOODING OR WATER DAMAGE. Immediately call a qualified service agency to inspect the water heater and to make a determination on what steps Explosion Hazard should be taken next. - Page 5 GENERAL SAFETY INFORMATION Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and For continued protection against liquids in the vicinity of this or any other appliance. risk of fire: Do not install water heater on Avoid all ignition sources if you smell gas.
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Page 6: Introduction
INTRODUCTION Thank You for purchasing this water heater. Properly installed See the Installation Checklist and Troubleshooting on page and maintained, it should give you years of trouble free service. 56. By using this checklist the user may be able to make minor operational adjustments and avoid unnecessary service ABBREVIATIONS USED calls. -
Page 7: Features And Components
FEATURES AND COMPONENTS BASIC OPERATION MODULATION The water heaters covered in this manual have a helical coil The water heaters covered by this manual are capable of shaped heat exchanger that is submerged in the storage tank. modulating their firing rate. The CCB monitors the water The water heater’s Main Burner is a radial design burner, it temperature in the tank and regulates the firing rate to achieve is mounted on the top and fires downward through the heat... -
Page 8: Top View
TOP VIEW FRONT TOP VIEW OF ALL MODELS Figure 3 COMPONENTS (All Models) system monitors this switch and will disable heating operation if its contacts are open during a heating cycle. See Gas IMPORTANT. The Enable/Disable switch listed in this manual is Pressure Requirements and Table 3 on page 11. -
Page 9: Side Views
LEFT SIDE RIGHT SIDE Figure 4 9. Temperature-Pressure Relief Valve discharge pipe - see T&P SIDE VIEWS Valve Discharge Pipe Requirements: on page 15. 1. Cleanout access panel, covers water heater cleanout 10. Lower Temperature Probe, 1 of 2 temperature probes. The opening. -
Page 10: Installation Considerations
INSTALLATION CONSIDERATIONS ROUGH IN DIMENSIONS SUPPLY GAS CONNECTION INTAKE AIR CONNECTION 3 INCH PVC WATER OUTLET HEIGHT T & P VALVE FRONT BACK 3/4” NPT RECIRCULATION RETURN LOWER VENT TEMPERATURE CONNECTION PROBE 3 INCH PVC (exhaust elbow) 1 1/2” NPT WATER INLET CLEANOUT... -
Page 11: Locating The Water Heater
GAS LINE CONNECTION SIZE STORAGE CAPACITIES TABLE 1 TABLE 2 † MODEL SERIES NATURAL GAS PROPANE GAS MODEL U. S. GALLONS LITERS (A)JWSH100150 200/201 3/4 "NPT 3/4 "NPT (A)JWSH100150 (A)JWSH100199 200/201 3/4 "NPT 3/4 "NPT (A)JWSH100199 (A)JWSH100250 200/201 3/4 "NPT 3/4 "NPT (A)JWSH100250 †... -
Page 12: Extended Vent Terminations
There is a risk in using fuel burning appliances such as gas Contact your local distributor or call the parts department phone water heaters in rooms, garages or other areas where gasoline, number listed on the back cover of this manual to order 4 inch other flammable liquids or engine driven equipment or vehicles termination(s). -
Page 13: Installation Requirements
• DO NOT apply insulation to the top of the water heater, as • DO obtain new warning and instruction labels from the this will interfere with safe operation of the blower assembly. manufacturer for placement on the blanket directly over the existing labels. -
Page 14: Mixing Valves
MIXING VALVES HOT WATER OUTLET Water temperature over 125°F (52°C) can cause severe burns instantly 12” TO 15” resulting in severe injury or death. (30-38 cm) Children, the elderly and the TEMPERED WATER physically or mentally disabled are at OUTLET highest risk for scald injury. -
Page 15: Temperature-Pressure Relief Valve
TEMPERATURE-PRESSURE RELIEF VALVE water in adequate quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water flow may cause property damage. CAUTION Explosion Hazard Water Damage Hazard Temperature-Pressure Relief Valve must comply with ANSI Z21.22- •... -
Page 16: Condensate Drain
CONDENSATE DRAIN line, such as copper, to the water heater for this reason. See Condensate Drain Installation on page 38. The water heaters covered in this manual are condensing appliances and require a building drain to be located in close COMBUSTIBLE MATERIAL STORAGE proximity to allow the condensate to drain safely. -
Page 17: Air Requirements
AIR REQUIREMENTS UNUSUALLY TIGHT CONSTRUCTION In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier, etc.) additional air must be provided using the methods Breathing Hazard - Carbon Monoxide Gas described in the Confined Space section that follows. -
Page 18: Fresh Air Openings For Confined Spaces
FRESH AIR OPENINGS FOR CONFINED SPACES Alternatively a single permanent opening, commencing within 12 inches (300 mm) of the top of the enclosure, shall be provided. The following instructions shall be used to calculate the size, See Figure 10. The water heater shall have clearances of at number and placement of openings providing fresh air for least 1 inch (25 mm) from the sides and back and 6 inches (l50 combustion, ventilation and dilution in confined spaces. -
Page 19: Outdoor Air Through Two Vertical Ducts
OUTDOOR AIR THROUGH TWO VERTICAL DUCTS When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The illustrations shown in this section of the manual are a The minimum dimension of rectangular air ducts shall be not less reference for the openings that provide fresh air into confined than 3 inches (7.62 cm). -
Page 20: Venting Installation
VENTING INSTALLATION discharge all flue gases to the outdoor atmosphere through a sealed vent (exhaust) pipe. Direct Vent configurations have two pipes connected to the water heater, one vent pipe and one intake air pipe. Direct Vent configurations can be terminated in Breathing Hazard - Carbon Monoxide Gas one of seven different arrangements. -
Page 21: Intake Air Connection
18. Stress levels in pipe/fittings can be significantly increased by The intake air Tee fitting is factory installed with the 1/2 inch improper installation. If rigid pipe clamps are used to hold branch and hose barb angled to the right at approximately 130° the pipe in place, or if the pipe cannot move freely through a when viewed from the end, see Figure 15. -
Page 22: Venting Installation Sequence
NOTE: Refer to Tables 9 and 10 on page 29 for the equivalent FACTORY SUPPLIED FITTINGS linear pipe length of AL29-4C® 45° and 90° elbows. The water heater ships with two (2) factory supplied 3 inch terminations (PVC 45° elbows with debris screen). Factory supplied PRIMER AND CEMENT vent and intake air terminations, concentric, or low profile terminations Tetrahydrofuran (THF) primer should be used to prepare the surfaces... -
Page 23: Direct Vent Installation
If the vent piping will terminate vertically, through a roof, see If a concentric termination(s) will be used see Concentric Vertical Termination Installation on page 24. Termination Installation on page 29. If the vent piping will terminate horizontally, through a If a low-profile termination will be used see Low Profile Vent sidewall, see Sidewall Termination Installation on page 26. -
Page 24: Vertical Termination Installation
VERTICAL TERMINATION INSTALLATION INTAKE AIR SCREEN 1. Determine the location for the termination(s). 2. If installing only the vent (exhaust) piping in a Power Vent configuration vertically through the roof; ensure that all exterior vertical clearance requirements shown in Figure 22 and Figure 23 on page 25 are being maintained. - Page 25 8. Suspend the pipe(s) through center of hole using field IF LESS THAN supplied metal strapping or equivalent support materials as 10 FEET (3 m) shown in Figure 22 on page 25. 9. Slide a roof boot or equivalent flashing over the pipe and secure roof boot or equivalent flashing to roof and seal around the flashing as shown in Figure 22, Figure 23 and 24 INCHES (60 cm)
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Page 26: Sidewall Termination Installation
SIDEWALL TERMINATION INSTALLATION 18. Cut a 4 inch (10 cm) diameter hole for 3 inch pipe or 5 inch (13 cm) diameter hole for 4 inch pipe where the pipe(s) will 12. Determine the location for the termination(s). pass through the wall. 13. -
Page 27: Polypropylene Installations
POLYPROPYLENE INSTALLATIONS Polypropylene vent systems do not use cement to connect the pipe and elbow sections but use a push together gasket The water heater has been approved to be installed with seal method. Do not attempt to connect Polypropylene with Polypropylene vent material as shown in Tables 7 and 8. -
Page 28: Al29-4C ® Vent Installations
AL29-4C VENT INSTALLATIONS ® The water heaters covered by this manual are approved to be installed using the approved vent terminations shown (AL29-4C® is a registered trademark of Allegheny Technologies, Inc.) in this manual. This means that, the installer must use the The water heaters covered by this manual are approved adapter listed in Tables 9 and 10 and a short piece of PVC to be installed with AL29-4C®... -
Page 29: Concentric Termination Installation
CONCENTRIC TERMINATION INSTALLATION NOTE: If this required 10 foot (3 m) distance to a parapet, vertical wall or structure cannot be maintained, standard 1. Concentric terminations must be ordered separately. (A) terminations must be used. See Vertical Termination JWSH100150 thru (A)JWSH100250 models must use the Installation on page 24. - Page 30 4 INCH CONCENTRIC TERMINATION INSTALLATION When installing 4 inch intake air and vent pipe - connect the piping to the concentric termination using field supplied 4" x 3" reducer couplings and short sections of 3 inch pipe (18 INTAKE AIR CONNECTION INTAKE AIR PIPE 3 INCH PVC inches or less) pipe.
- Page 31 MULTIPLE CONCENTRIC TERMINATION CLEARANCES Four Concentric Terminations When installing multiple concentric terminations vertically through 1. When installing four concentric terminations through a roof or a roof or horizontally through a sidewall ensure the required through a sidewall in close proximity they may be arranged clearances (separation) between terminations are maintained.
- Page 32 MULTIPLE CONCENTRIC TERMINATION ARRANGEMENTS SIDEWALL The illustrations on this page show some of the installation arrangements for multiple concentric terminations that are allowed. See Multiple Concentric Termination Clearances on page 31 for detailed information on clearances and additional arrangement options. NOTE: When multiple concentric terminations are installed through a roof in the same location all termination caps must be at the same height measured from the ground.
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Page 33: Low Profile Vent Installation
LOW PROFILE VENT INSTALLATION To Heater Intake Air Connection This water heater is certified for sidewall direct venting with IPEX System 636 Low Profile Vent Kit. Follow instructions below for From Heater Vent proper installations. Pipe Connection All termination kits must be located and installed in accordance 12”... -
Page 34: Venting Arrangements
VENTING ARRANGEMENTS Power Vent Vertical Power Vent Horizontal Direct Vent Vertical Figure 42 Figure 43 Figure 44 Direct Vent Horizontal Direct Vent Vertical Vent Direct Vent Horizontal Vent Horizontal Intake Vertical Intake Figure 45 Figure 46 Figure 47... - Page 35 VENTING ARRANGEMENTS Direct Vent Horizontal Low Profile Direct Vent Vertical Concentric Direct Vent Horizontal Concentric Figure 50 Figure 48 Figure 49...
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Page 36: Termination Clearances Sidewall Power Vent
TERMINATION CLEARANCES SIDEWALL POWER VENT POWER VENT (using room air for combustion) EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION F IX E D C L O S E D O P E R A B L F IX E D C L O S E D O P E R A B L VENT TERMINAL AIR SUPPLY INLET... -
Page 37: Termination Clearances Sidewall Direct Vent
TERMINATION CLEARANCES SIDEWALL DIRECT VENT DIRECT VENT (using outdoor air for combustion) EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION F IX E D C L O S E D O P E R A B L F IX E D C L O S E D O P E R A B L VENT TERMINAL AIR SUPPLY INLET... -
Page 38: Water Heater Installation
WATER HEATER INSTALLATION CONDENSATE DRAIN INSTALLATION 3. Terminate the condensate drain piping with an elbow above the drain. Ensure that any discharge will exit the condensate Installation must conform with these instructions and local drain line no more than 6 inches (15.2 cm) above a suitable building codes. -
Page 39: Supply Gas Line Installation
SUPPLY GAS LINE INSTALLATION GAS LINE SIZING Depending on the developed equivalent length and/or the number Contact your local gas utility company to ensure that adequate of appliances connected to a common main, the size of supply gas gas service is available and to review applicable installation lines may have to be increased. -
Page 40: Gas Line Leak Testing
GAS LINE LEAK TESTING GAS LINE CONNECTION 1. The water heaters covered by this manual are shipped from the factory with 3/4 inch supply gas connections. The supply gas line must not be smaller than 3/4 inch. Connect the supply gas line to the water heater's 24 Volt Gas Valve in accordance Fire and Explosion Hazard with all applicable local and national code requirements. -
Page 41: Enable / Disable Circuit (For Building Management Systems)
POWER SUPPLY CONNECTIONS heating operation during periods when the building is unoccupied or there is no demand for hotwater. Read the requirements for the Power Supply on page 13 before connecting power. To use the enable/disable circuit it must first be activated by selecting the “Use External Enable”... -
Page 42: Water Line Connections
WATER LINE CONNECTIONS T&P VALVE DISCHARGE PIPE The water piping installation must conform to these instructions and to all local and national code authority having jurisdiction. Good practice requires that all heavy piping be supported. Read and observe all requirements in the following sections Explosion Hazard before installation of the water piping begins: 1. -
Page 43: Temperature Regulation
TEMPERATURE REGULATION HIGH TEMPERATURE LIMIT CONTROL (ECO) TABLE 13 Time for Permanent Burns This water heater is equipped with an ECO (energy cut out) non Water Temperature Time for 1st Degree Burn 2nd & 3rd Degree °F (°C) (Less Severe Burns) adjustable high temperature limit switch. -
Page 44: Control System Operation
CONTROL SYSTEM OPERATION OVERVIEW user input buttons; an up, down and three (3) multi functional operational buttons below the LCD, see Figure 59. The water heaters covered in this manual are equipped with an User Input Buttons electronic control system that regulates water temperature inside the storage tank. - Page 45 STATUS ICONS The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information. The icons are described in the table below. See Figure 59 on page 44 and the Sequence Of Operation on page 56. TABLE 14 Icon Description Water temperature in the tank has fallen.
- Page 46 OPERATING STATES The current operational state of the water heater is displayed on the Desktop screen as the "Status." The common operational states are described in the table below. See Figure 59 on page 44 and the Sequence Of Operation on page 56. TABLE 15 State Description...
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Page 47: User Settings & Control System Menus
USER SETTINGS & CONTROL SYSTEM MENUS TEMPERATURES MENU Operating Set Point And Differential Adjustment The Operating Set Point is adjustable from 90°F (42°C) to 180°F (82°C). The factory setting is 120°F (49°C). The Differential is adjustable from 2° to 20°. The factory setting is 8°. These user settings are accessed from the Temperatures menu. The following instructions will explain how to adjust these settings and navigate the control system menus. - Page 48 TEMPERATURES MENU (CONT) DESCRIPTION/ACTION DISPLAY • Differential - Adjustable user setting that changes the tank temperature differential with a range of 2° to 20°F. The Temperatures factory setting is 8°F. Operating Set Point 140°F • Tank Temperature - non adjustable - control system Differential 8°F sensed temperature (averaged from upper and lower...
- Page 49 DISPLAY SETTINGS DESCRIPTION/ACTION DISPLAY Select Display Settings from the Main Menu and press the Display Settings Operational Button under "SELECT" to enter this menu. This Temperature Units °F menu contains adjustable display options for viewing information on the UIM’s LCD screen. Use the Up & Down Buttons to Backlight Delay navigate the menu.
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Page 50: Blocked Exhaust
CURRENT FAULT DESCRIPTION/ACTION DISPLAY Select Current Fault from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains non adjustable operational information. Use the Blocked Exhaust Up & Down Buttons to navigate the menu. Fault occurred 2 mins ago This menu contains the current Fault or Alert error message. - Page 51 SERVICE CONTACT INFORMATION The control system has a discrete menu that Installing contractors and/or service agents can access to enter contact information for their customers. This contact information will be displayed with all Fault and Alert messages. DESCRIPTION/ACTION DISPLAY From the Desktop Screen (see Figure 59 on page 44) press Service Contact Information and hold down the middle (unmarked) Operational Button for 30 seconds and then release it.
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Page 52: Start Up
START UP PRIOR TO START UP port one full turn only; turn the needle valve screw counter- clockwise to open the valve. Slide the manometer sensing Installation and start up of this water heater requires abilities tube over the top of the test port, see Figure 60 and Figure and skills equivalent to that of a licensed tradesman in the field involved, see Qualifications on page 6. -
Page 53: Lighting & Operation Labels
LIGHTING THE WATER HEATER LIGHTING & OPERATION LABELS The instruction label below is affixed to the water heater's covered by this manual at the factory and must be followed when lighting and operating the water heater. FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury... - Page 54 SUPPLY GAS PRESSURE ADJUSTMENT with other gas fired appliances; the supply gas pressures shall be measured at each water heater with all gas fired appliances connected to a common main firing at full capacity. On multiple water heater installations the supply gas line Fire and Explosion Hazard regulators shall be adjusted to provide gas pressure to each water heater within the minimum and maximum supply pressure...
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Page 55: Checking The Firing Rate
CHECKING THE FIRING RATE HIGH ALTITUDE INSTALLATIONS If firing rate adjustment is required follow these instructions to determine the actual firing rate of the water heater: NOTE: The heaters covered by this manual are capable of Fire and Explosion Hazard modulating their firing rate. -
Page 56: Troubleshooting
TROUBLESHOOTING SEQUENCE OF OPERATION INSTALLATION CHECKLIST Read the Sequence of Operation below before attempting to The list below represents some of the most critical correct any operational problems. Refer to the Features And installation requirements that, when overlooked, often result Components section beginning on page 7 for the location in operational problems, down time and needless parts of various water heater components described below. -
Page 57: Sequence Of Operation Flow Chart
SEQUENCE OF OPERATION FLOW CHART Sequence is shown with Enable/Disable Switch in the Enable position If tank temperature drops below Operating Set Point minus Differential setting a heating cycle is activated Control System performs diagnostic checks Normal State of all pressure switches and ECO are checked Control System Locks Out Blower Prover pressure switch verified open Displays Fault Msg... -
Page 58: Operational Problems
OPERATIONAL PROBLEMS • Vent (exhaust) gas recirculation at the vent and intake air pipe terminations on Direct Vent installations - see Direct Vent Installation on page 23. • Excessive equivalent lengths of intake air and/or vent (exhaust) piping installed - see Venting Requirements on Read and understand this instruction page 21. -
Page 59: Fault And Alert Conditions
• Sediment or lime scale accumulation may be affecting mark. The water heater will continue to operate during an Alert water heater operation. See Maintenance on page 62 for condition but the water heater must be serviced by a qualified sediment and lime scale removal procedures. -
Page 60: Ignition Failure
FAULT AND ALERT MESSAGES Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area. POSSIBLE CAUSES - CHECK/REPAIR DISPLAYED FAULT/ALERT MESSAGE • Using a manometer, ensure that gas supply pressure is above Ignition Failure minimum requirement listed on heater’s data plate and does not drop more than 1.5”... -
Page 61: Blower Prover Open
FAULT AND ALERT MESSAGES (CONT) Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area. POSSIBLE CAUSES - CHECK/REPAIR DISPLAYED FAULT/ALERT MESSAGE • Ensure excessive wind is not pressurizing the intake air or Blower Operation Error exhaust pipe. -
Page 62: Maintenance
MAINTENANCE GENERAL MAINTENANCE SCHEDULE Do not have any combustible materials (such as gasoline, TABLE 17 flammable liquids or flammable vapors) within the water heater COMPONENT OPERATION INTERVAL REQUIRED area. See Locating The Water Heater on page 11. Sediment Tank Semi Annually Flushing Removal Water heater maintenance includes periodic tank flushing and... -
Page 63: Filling The Water Heater
5. Ensure the drain hose is secured before and during the entire flushing procedure. Flushing is performed with system water CLEANOUT pressure applied to the water heater. TANK ACCESS PANEL 6. Open the water heater drain valve to flush the storage tank. CLEANOUT CLEANOUT OPENING... -
Page 64: Powered Anode Rods
TABLE 18 TEMPERATURE-PRESSURE UN-LIME® PROFESSIONAL DELIMER RELIEF VALVE Part Number Description 9005416105 4 - 1 gallon (case) 9005417105 1 - 5 gallon POWERED ANODE RODS To insure a long, trouble-free operating life, the water heaters DISCHARGE PIPE covered in this manual are factory equipped with a powered anode system. -
Page 65: Diagrams
DIAGRAMS CCB - CENTRAL CONTROL BOARD LAYOUT Figure 66... -
Page 66: Wiring Diagram
WIRING DIAGRAM Blower 24Vureg 1 White / Brown Speed f-back Spark 2 White / Orange Module 24Vureg 1 White/Brown 4 White / Blue PWM Signal Neutral PWM Signal Brown Neutral 2 White/Blue 5 White / Green Dgnd Neutral 1 Red Speed f-back 120 to Spark 2 Black... -
Page 67: Circulation Pump Wiring Diagrams
CIRCULATION PUMP WIRING DIAGRAMS CIRCULATING PUMP WIRING DIAGRAM STORAGE TANK OR BUILDING RECIRCULATION FIELD SUPPLIED TEMPERATURE CONTROL INSTALLED IN THE STORAGE TANK OR CIRCULATING LOOP RETURN LINE NOTE: USE SEPARATE 120 VAC POWER SUPPLY FOR PUMP CIRCUIT. DO NOT SHARE POWER WITH WATER HEATER AS THIS MAY CAUSE ELECTRICAL LINE NOISE AND LEAD TO ERRATIC CONTROL SYSTEM OPERATION. -
Page 75: Notes
COMMERCIAL WATER HEATER LIMITED WARRANTY EFFECTIVE WHAT'S NOT COVERED For 3 Years, in the event of a tank leak, we will repair or, at our • Problems caused by improper: gas supply line sizing, gas type, discretion, replace the defective water heater. venting, connections, combustion air, voltage, wiring, or fusing For 1 Year, •... - Page 76 599 Hill Street West Fergus, ON Canada N1M 2X1 Should you have any questions please Email us at techsupport@gsw-wh.com or Visit our website: www.johnwoodwaterheaters.com or Call our Technical Support line at 1-888-GSW-TECH (479-8324) Copyright © 2014 John Wood Water Heaters, All rights reserved.
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