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MODELS (A)JWSH100150 THRU (A)JWSH100250
COMMERCIAL GAS WATER HEATER
• INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY
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 and service must be
performed by a qualified installer,
service agency or the gas supplier.
TEXT PRINTED OR UNDERLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE
READ THOROUGHLY BEFORE INSTALLING AND USING
THIS APPLIANCE.
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND
NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
PRINTED 0809
SERIES 100 AND 101
GAS-FIRED POWER BURNER
FOR DOMESTIC HOT WATER
CAUTION
599 Hill Street West
Fergus, ON Canada N1M 2X1
1
316792-000
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Related Manuals for John Wood JWSH100150
Summary of Contents for John Wood JWSH100150
- Page 1 MODELS (A)JWSH100150 THRU (A)JWSH100250 SERIES 100 AND 101 COMMERCIAL GAS WATER HEATER GAS-FIRED POWER BURNER FOR DOMESTIC HOT WATER • INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
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Page 2: Rough-In Dimensions
MODELS (A)JWSH100150 THRU (A)JWSH100250 ROUGH-IN-DIMENSIONS GAS VALVE PIPING (A)JWSH100150, (A)JWSH100199, & 3/4" NPT (A)JWSH100250 Table 1. RECOVERY CAPACITIES - NATURAL GAS / L.P. TEMPERATURE RISE - DEGREES F - GALLONS PER HOUR Approx. Input Model Gallon BTU/Hr. Usage Capacity (A)JWSH100150 150,000 nat/lp (A)JWSH100199... -
Page 3: Table Of Contents
TABLE OF CONTENTS PAGE PAGE ROUGH-IN DIMENSIONS ..............Thermometers ................FOREWORD ..................Relief Valve ................... FEATURES ..................Water Line Connections ............... Water Temperature Control ............Heater Wiring ................High Limit Switch (E.C.O.) ............USING THE ELECTRONIC CONTROLLER ........Dishwashing Machine Requirement ..........Overview .................. -
Page 4: High Limit Switch (E.c.o.)
temperature be set for the lowest temperature which satisfies your hot water DISHWASHING MACHINE REQUIREMENT needs. This will also provide the most energy efficient operation of the water All dishwashing machines meeting the National Sanitation Foundation heater and minimize scale formation. requirements are designed to operate with water flow pressures between SETTING THE WATER HEATER TEMPERATURE AT 120°F/49°C WILL 15 and 25 pounds per square inch (103 Kpa and 173 Kpa). -
Page 5: Locating The Heater
LOCATING THE HEATER WARNING WARNING THIS WATER HEATER IS A CONDENSING UNIT AND REQUIRES A DRAIN TO BE LOCATED IN CLOSE PROXIMITY TO ALLOW THE CONDENSATE THERE IS A RISK IN USING FUEL BURNING APPLIANCES SUCH AS TO DRAIN SAFELY. THE CONDENSATE DRAINS FROM THE UNIT AT GAS WATER HEATERS IN ROOMS, GARAGES OR OTHER AREAS WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR ENGINE THE EXHAUST ELBOW LOCATED AT THE BOTTOM OF THE UNIT. -
Page 6: Hard Water
HARD WATER If the confined space is within a building of tight construction, air for combustion and ventilation must be obtained from outdoors. When directly communicating with the outdoors through vertical ducts, two permanent openings, located Where hard water conditions exist, water softening or the threshold type of in the above manner, shall be provided. - Page 7 CAUTION TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MAXIMUM PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS RECOMMENDED. CANADIAN POWER VENT FIGURE 5. CANADIAN DIRECT VENT FIGURE 6.
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Page 8: Direct Venting
IMPORTANT NOTE: TO PREVENT EXHAUSTING PRODUCTS FROM CIRCULATING TO THE AIR INTAKE IN WINDY/COLD AREAS, THE MA XIMUM The vent system must terminate so that proper clearances are maintained PRACTICAL DISTANCE BETWEEN THESE TWO TERMINALS IS as cited in local codes or the current editions of the National Fuel Gas Code, RECOMMENDED. -
Page 9: Vertical Vent Terminal Installation
VERTICAL VENT TERMINAL INSTALLATION 5. Glue the intake vent terminal to the section of the pipe. 6. Slide the wall plate over the pipe to stop against intake vent terminal. IMPORTANT 7. Place a bead of caulking (not supplied) around the gap between the pipe WHEN TERMINATING THROUGH A ROOF, THE FOLLOWING and the wall. -
Page 10: Installation Of Vent System
INSTALLATION OF VENT SYSTEM NOTE: for Water Heaters in locations with high ambient temperatures (above 100°F or 38°C) and/or insufficient dilution air, it is recommended that CPVC pipe and fittings marked ULC S636 compliant (MUST USE SUPPLIED VENT WARNING TERMINAL) be used. THE OPTIONAL INTAKE VENTING ARRANGEMENT AND THE 4. -
Page 11: Control And Switches
CONTROLS AND SWITCHES LOW GAS PRESSURE SWITCH (SEE FIGURE 12) All models are provided with four pressure switches. These switches are The Low Gas Switch (LGS) is a single-pole, normally open pressure switch essential to the safe and proper operation of the unit. All switches are wired that will close its contacts when a rising pressure of 5.0 in. -
Page 12: Connection Of Gas Pipe
WARNING THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER THAN 10.5" (2.59 KPa) WATER COLUMN SUPPLY GAS PRESSURE. HIGHER GAS SUPPLY PRESSURES REQUIRE SUPPLEMENTAL REDUCING SERVICE REGULATION. EXPOSURE TO HIGHER GAS SUPPLY PRESSURE MAY CAUSE DAMAGE TO THE GAS CONTROLS WHICH COULD RESULT IN FIRE OR EXPLOSION. -
Page 13: Purging
RELIEF VALVE DISCONNECT THE APPLIANCE AND ITS MANUAL GAS SHUTOFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1/2 PSIG (3.45Kpa). GAS This heater is equipped with an approved temperature and pressure relief SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTED FROM THE valve. -
Page 14: Heater Wiring
3. This unit may never be connected to any existing heating system or THE CONTROLLER TO MALFUNCTION. A HIGH QUALITY POWER component(s) previously used with non-potable water heating CONDITIONER MUST BE INSTALLED IF THE ABOVE CONDITIONS EXIST. MALFUNCTIONS CAUSED BY A POOR ELECTRICAL SUPPLY ARE NOT appliance. -
Page 15: Using The Electronic Controller
USING THE ELECTRONIC CONTROLLER 1. Overview Interaction with the water heater controller is done through an up, a down, and three operation buttons. These buttons are illustrated to the right. Operation of the three lower buttons is defined immediately above them on the screen. The [UP] and [DN] buttons are used to navigate through the menus and make adjustments to the water heater. -
Page 16: Operating States
2. Operating States In the main desktop screen, there are some specific Operating States that are indicated on the status line. These are summarized below: 3. Adjusting the Operating Set Point ACTION: Press Change then use the UP and DOWN buttons to change the Set The Operating Set Point of this water heater determines the regulated Point. -
Page 17: Changing The Display Units
4. Changing the Display Units There are two types of conditions that can occur during operation. These are Warnings and Faults: The display interface to the heater has the option of selecting between de- grees Fahrenheit and degrees Celsius for temperature displays. This can be •... -
Page 18: Viewing The Fault History
7. Viewing the Fault History ACTION: To get to the current fault information screen, press Menu. The controller for this water heater will store a history of ten of the last Fault and Warning conditions that occurred. This is stored in the Fault History. DISPLAY: Along with all the information about the fault, including a estimate time of when the fault occurred, information regarding the advanced diagnostics for... -
Page 19: Operating Instructions
OPERATING INSTRUCTIONS 5. Check the vent system seams and joints and ensure that there is no discharge of flue products into the room. IMPORTANT 6. Check the input rate. IT IS RECOMMENDED THAT A QUALIFIED SERVICE TECHNICIAN PERFORM THE INITIAL FIRING OF THE HEATER. AT THIS TIME THE For appliance installation locations with elevations above 6500 feet USER SHOULD ASK THE TECHNICIAN ANY QUESTIONS IN REGARD (1982 meters) refer to HIGH ALTITUDE INSTALLATIONS section of this... -
Page 20: Cathodic Protection
HIGH ALTITUDE INSTALLATIONS WARNING UNDER NO CIRCUMSTANCES SHOULD THE INPUT EXCEED THE RATE WARNING SHOWN ON THE HEATER RATING PLATE. OVER FIRING COULD RESULT IN DAMAGE OR SOOTING OF THE HEATER. THE (A)JWSH100199 AND (A)JWSH100250 HEATERS ARE CERTIFIED FOR USE WITHOUT MODIFICATION FOR ALTITUDES UP TO 10,100 ft. - Page 21 FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. OPERATING INSTRUCTIONS TURN OFF GAS TO APPLIANCE (A)JWSH100150 ONLY.
- Page 22 FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. OPERATING INSTRUCTIONS OPERATING INSTRUCTIONS TURN OFF GAS TO APPLIANCE TURN OFF GAS TO APPLIANCE (A)JWSH100199 &...
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Page 23: Flushing
FLUSHING 1. Turn off the heater electrical disconnect switch. 2. Open a hot water faucet until the water runs cool and then close the hot water faucet. 3. Open the drain valve and allow water to flow until it runs clean. 4. -
Page 24: Drain Valve And Access Panels
DRAIN VALVE AND ACCESS PANELS to build until the relief valve actuation pressure is equaled. Then, the relief valve will open, allowing some water to escape, slightly lowering The heaters are equipped with a 3/4" drain valve. the pressure. An access panel covers the cleanout opening in the tank which is sealed by Contact your water supplier or local plumbing inspector on how to control a gasket and cover, figure 25. -
Page 25: Installation Diagrams
INSTALLATION DIAGRAMS ONE TEMPERATURE - ONE HEATER VERTICAL STORAGE TANK FORCED CIRCULATION WITH OR WITHOUT BUILDING RECIRCULATION CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACK- FLOW PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED NOTE: CONNECT RETURN... - Page 26 TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE WITH OR WITHOUT BUILDING RECIRCULATION PIPE RELIEF VALVE TO OPEN DRAIN. DANGER N O T E : TEMPERATURE SETTING SHOULD NOT EXCEED I F T E M P E R E D W AT E R I S RECIRCULATED, RETURN LINE SHOULD SAFE TEMPERATURE AT FIXTURES.
- Page 27 TWO TEMPERATURE - TWO HEATERS HIGH TEMPERATURE WITH OR WITHOUT BUILDING RECIRCULATION CAUTION: IF THE PLUMBING REQUIRES THE USE OF PIPES WITH DISSIMILAR MATERIAL (FOR EXAMPLE, STEEL AND COPPER), USE DIELECTRIC UNIONS TO PREVENT AN ELECTRO-GALVANIC ACTION BETWEEN THE PIPING COMPONENTS WITH DISSIMILAR MATERIALS.
- Page 28 TWO TEMPERATURE - TWO HEATERS (ONE PRE-HEATER/ONE BOOSTER HEATER) WITH OR WITHOUT BUILDING RECIRCULATION * PIPE RELIEF VALVE TO OPEN DRAIN DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE ** 140°F (60°C) TO 150°F (66°C) SHOULD BE MAXIMUM WATER AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON TEMPERATURE MAINTAINED IN THE PRE-HEATERS.
- Page 29 TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE WITH RECIRCULATION OF SANITIZING LOOP CAUTION: IF THE PLUMBING REQUIRES THE USE OF PIPES WITH DISSIMILAR MATERIAL (FOR EXAMPLE, STEEL AND COPPER), USE DIELECTRIC UNIONS TO PREVENT AN ELECTRO-GALVANIC ACTION BETWEEN THE PIPING COMPONENTS WITH DISSIMILAR MATERIALS.
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Page 30: Manifold Kits
MANIFOLD KITS Precision cut type “L” all copper manifold kits assure water flow balance of all units. Without this balance, the full water heating and storage potential of the system cannot be achieved. Plus, the units with the higher water flow may have a shortened life. Dimensions shown are for minimum space occupied by the water heaters assemblies. -
Page 31: Checklist And Service Information
CHECKLIST AND SERVICE INFORMATION 2. Some of the electrical components of the water heater make sounds which are normal. IMPORTANT • Contacts click or snap as the heater starts and stops. The installer may be able to observe and correct certain problems which •... -
Page 32: Replacement Parts
MOTOR WILL NOT RUN MOTOR RUNS, BURNER LIGHTS MOMENTARILY, THEN LOCKS OUT 1. Confirm 120V AC to the controller. Also, to verify correct polarity, check for 120 V AC between hot supply and ground. 1. Reset the appliance two more times to ensure that all of the air has been purged from the gas line. -
Page 33: Limited Warranty
MODELS (A)JWSH100150 thru (A)JWSH100250 LIMITED WARRANTY GSW Water Heating, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater. 1. THE TANK If the glass-lined tank in this water heater shall prove to the satisfaction of the warrantor to have leaked due to natural corrosion from potable water therein, during the first THREE years after initial installation, the warrantor will supply a complete new John Wood water heater of equivalent size and current model. - Page 34 NOTES:...
- Page 35 NOTES:...
- Page 36 599 Hill Street West Fergus, ON Canada N1M 2X1...
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