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599 Hill Street West
Fergus, ON Canada N1M 2X1
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 0412
commercial gas water heaters
ANSI/NSF-5
and
service
must
qualified
installer,
models ajwsh130 300 series 100, 101
ajwsh130 400 series 104, 101
be
instruction manual
installation - operation - serVice
- maintenance - limited warranty
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.
320674-002
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Table of Contents
Related Manuals for John Wood 101 Series
Summary of Contents for John Wood 101 Series
- Page 1 instruction manual commercial gas water heaters models ajwsh130 300 series 100, 101 ajwsh130 400 series 104, 101 installation - operation - serVice - maintenance - limited warranty 599 Hill Street West Fergus, ON Canada N1M 2X1 ANSI/NSF-5 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: Table Of Contents
table of contents SAFE INSTALLATION, uSE AND SErVICE......3 Sidewall Termination Installation ........25 APPRoVAlS ................3 Concentric Termination Installation ........26 gENErAL SAFETy INFOrMATION ......... 4 4 Inch Concentric Termination Installation ......27 Precautions ................4 6 Inch Concentric Termination Installation ......28 grounding Instructions ............ -
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 uNDEr WATEr. Immediately call a qualified service agency to inspect the water heater and to make a Explosion Hazard determination on what steps should be taken next. If the unit is exposed to the following, do not operate heater Flammable hydrogen gases until all corrective steps have been made by a qualified... - 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: Avoid all ignition sources if you smell gas. Do not install water heater on Do not expose water heater controls to excessive gas carpeted floor.
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Page 6: Introduction
introduction Thank you for purchasing this water heater. Properly installed Particular attention should be given to the installation and maintained, it should give you years of trouble free service. of thermometers at the locations indicated in the piping diagrams as these are necessary for checking the operation abbreViations used of the water heater. -
Page 7: Features And Components
2.0 AC amps for AJWSH130 300 100/101 and AJWSH130 400 HELICAL 101 series only, and 3.1 AC amps for AJWSH130 400 104 series. COIL See the Sequence Of Operation on page 54. -
Page 8: Top View
top View FRONT figure 3 top View components blower is operating properly. The control system monitors this switch and will disable heating operation if its contacts 1. Water Heater’s 120 VAC on/off switch. are closed before the Combustion blower is energized or 2. -
Page 9: Side Views
side Views circuit board, the control system’s LCD display and operational buttons. used to adjust various user settings and 1. Cleanout access panel, covers water heater cleanout view operational information. See Control System Operation opening. on page 41. 2. CCb enclosure - see Figure 3 on page 8 for description. 11. -
Page 10: Installation Considerations
installation considerations rough in dimensions 4” PVC 35° 1 1/4” SUPPLY GAS INTAKE AIR CONNECTION CONNECTION 20° 70° 69” BACK FRONT (175.3 cm) T & P WATER OUTLET 69” HEIGHT 33.12” (84.1 cm) (175.3 cm) 63 INCHES OUTSIDE (160 cm) 75.50”... -
Page 11: Locating The Water Heater
locating the water heater Carefully choose a location for the new water heater. The Fire or Explosion Hazard placement is a very important consideration for the safety of the occupants in the building and for the most economical use Do not store or use gasoline or other flammable vapors and of the water heater. -
Page 12: Extended Vent Terminations
extended Vent terminations Electrical Code, CSA C22.1. All-bronze circulators are recommended for used with commercial The water heaters covered by this manual can be installed using water heaters. 4 inch pipe for the intake air and/or vent piping up to a maximum Some circulating pumps are manufactured with sealed bearings of 70 equivalent feet (21.3 m). -
Page 13: Installation Requirements
installation reQuirements gas pressure reQuirements table 3 *MANIFOLD PrESSurE †MINIMuM SuPPLy PrESSurE ‡MAXIMuM SuPPLy PrESSurE MODEL NATurAL gAS PRoPANE GAS NATurAL gAS PRoPANE GAS NATurAL gAS PRoPANE GAS AJWSH130300 4” W. C. (1.0 kPa) 10” W. C. (2.49 kPa) 5.2” W. C. (1.29 kPa) 11”... -
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- CSA 4.4 and ASME code. -
Page 16: Condensate Drain
condensate drain combustible material storage The water heaters covered in this manual are condensing appliances and require a building drain to be located in close proximity to allow the condensate to drain safely. Fire or Explosion Hazard Condensate drains from the water heater at the exhaust elbow located at the bottom. -
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 11. 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 air from other indoor spaces The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only. do not refer to these illustrations for the purpose of vent installation. -
Page 20: Venting Installation
Venting installation requirements on page 17. If the installation space does not provide an adequate supply of fresh air the water heater must be installed in a Direct Vent configuration. 2. If the water heater is to be installed in a beauty shop, Breathing Hazard - Carbon Monoxide Gas barber shop, cleaning establishment, a laundry with dry •... -
Page 21: Venting Requirements
Venting reQuirements intake air and Vent pipe clearances The minimum clearance from combustible materials for the vent approVed materials (exhaust) and intake air piping shall be 0 inches. Vent or intake Approved vent and intake air pipe materials that may be used in air piping passing through a combustible wall or ceiling must be the united States: a continuous run (no joints). -
Page 22: Venting Installation Sequence
Venting installation seQuence exhaust elbow on the water heater. 11. If installing 6 inch pipe transition to 4 inch pipe at the exhaust 1. read the general Venting Instructions on page 20 and elbow as shown in Figure 15. The field installed 4” pipe Venting requirements on page 21 before proceeding. -
Page 23: Vertical Termination Installation
14. If installing 4 inch intake air pipe connect the intake air pipe to INSTALL TEE FITTING AS CLOSE TO WATER HEATER the intake air connection on the water heater. INTAKE INTAKE AIR CONNECTION AS POSSIBLE FACTORY 15. If installing 6” intake air pipe transition to 4” pipe at the intake PIPING INTAKE AIR CONNECTION... - Page 24 between the field supplied 90° elbow and the factory supplied The intake air and vent terminations must be oriented facing termination must not be excessive in length. The exposed downward and in the same direction as shown in Figure 21 on page 24.
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Page 25: Sidewall Termination Installation
sidewall termination installation (18 cm) diameter hole for 6 inch pipe where the pipe(s) will pass through the wall. 1. Determine the location for the termination(s). note: beware of concealed wiring and piping when cutting 2. If installing only vent (exhaust) piping in a Power Vent through the wall. -
Page 26: Concentric Termination Installation
concentric termination installation termination. use only Schedule 40 PVC to extend the 6 inch concentric termination. 1. Determine which concentric termination will be installed. When shortening the length of the termination carefully AJWSH130300 models installed using 4 inch vent/ measure and cut the larger (intake air) pipe first. Cut the intake air piping use the 4 inch concentric termination. -
Page 27: Inch Concentric Termination Installation
4 inch concentric termination installation 8. Connect the intake air and vent piping from the water heater to the 4 inch concentric termination using field supplied 4” x 3” reducer couplings as needed. INTAKE AIR CONNECTION INTAKE AIR PIPE 3 INCH PVC 9. -
Page 28: Inch Concentric Termination Installation
6 inch concentric termination installation 11. Push the vent cap/vent pipe assembly into the intake air y fitting assembly until the vent cap seats properly on the large diameter intake air pipe. Ensure the vent pipe is cemented 6” x 4” STANDARD INTAKE AIR CONNECTION REDUCER BUSHING 6”... - Page 29 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 30 multiple concentric termination arrangements four concentric terminations The illustrations on this page show some of the installation Four concentric terminations may be installed in close proximity arrangements for multiple concentric terminations that are as shown in Figure 38. See Figure 34 and Figure 35 on page 29 for allowed.
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Page 31: Venting Arrangements
Venting arrangements power Vent Vertical power Vent horizontal figure 40 figure 41 direct Vent Vertical direct Vent horizontal figure 42 figure 43... - Page 32 Venting arrangements direct Vent Vertical Vent horizontal intake direct Vent horizontal Vent Vertical intake figure 44 figure 45 direct Vent Vertical concentric direct Vent horizontal concentric figure 46 figure 47...
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Page 33: 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 34: 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 35: Water Heater Installation
water heater installation condensate drain installation 2. The field installed condensate drain line must not be less than 1/2 inch PVC in size. Installation must conform with these instructions and local 3. do not remove, modify or alter the factory condensate trap. building codes. -
Page 36: Supply Gas Line Installation
supply gas line installation the local gas utility company. gas line siZing Contact your local gas utility company to ensure that adequate do not use flexible gas piping. gas service is available and to review applicable installation codes for your area. Minimum required supply gas line sizes are shown in Table 4 on page 13. - Page 37 gas line connection 6. To prevent damage, care must be taken not to apply too much torque when connecting the supply gas line to the 1. The water heaters covered by this manual are shipped from water heater. the factory with a 1 1/4” supply gas connection, see Table 1 on page 10.
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Page 38: Electrical Wiring
electrical wiring (IE: relay coil) to this circuit. This will damage the CCb circuit board and is not covered under the limited warranty. All electrical work must be installed in accordance with the connecting an external supervisory control National Electrical Code, ANSI/NFPA 70 or the Canadian The enable/disable circuit is accessed from the CCb’s J6 plug Electrical Code, CSA C22.1 and local requirements. -
Page 39: 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. Explosion Hazard read and observe all requirements in the following sections before installation of the water piping begins: Temperature-Pressure Relief Valve 1. -
Page 40: Temperature Regulation
temperature regulation high temperature limit control (eco) Setting the Operating Set Point at 120°F (49°C) will reduce the risk of scalds. Some States require settings at specific lower This water heater is equipped with an ECO (energy cut off) non temperatures. -
Page 41: Control System Operation
control system operation oVerView multifunctional, their current function is defined by the text that appears directly above each button on the LCD screen. The water heaters covered in this manual are equipped with an the desktop screen electronic control system that regulates water temperature inside the storage tank. - Page 42 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 55 on page 41 and the Sequence Of Operation on page 54. table 10 icon description Water temperature in the tank has fallen.
- Page 43 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 55 on page 41 and the Sequence Of Operation on page 54. table 11 state description...
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Page 44: 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 45 temperatures menu (cont) description/action display • tank temperature - non adjustable - control system Top of Menu sensed temperature (averaged from upper and lower Temperatures temperature probes). Operating Set Point 140°F • upper temperature - non adjustable - control system Differential 8°F sensed temperature from the upper Temperature Probe.
- Page 46 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.
- Page 47 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 48 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 55 on page 41) press and Service Contact Information hold down the middle (unmarked) Operational button for 30 seconds and then release it.
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Page 49: Start Up
start up prior to start up 3. When all air has been purged from the supply gas line, tighten all supply gas line connections. Installation and start up of this water heater requires abilities 4. Check for gas leaks, see gas Line Leak Testing on page 37, and skills equivalent to that of a licensed tradesman in the field and repair any leaks found. - Page 50 6. Compare the actual manifold gas pressure reading recorded note: A pressure drop of more than 1.5” W. C. (0.37 kPa) when above to the required minimum/maximum values given the Main burner ignites is an indication of an inadequate supply in Table 3 on page 13.
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Page 51: Checking The Firing Rate
to turn off gas 1. Change the Operating Set Point to the lowest temperature setting, see Operating Set Point And Differential Adjustment on page 44. 2. When the water heater has completed its shut down sequence and enters the standby mode, turn the water heater’s on/off switch to the “off”... -
Page 52: Lighting The Water Heater
lighting the water heater lighting & operation label - ajwsh130 300 100/101 and ajwsh130 400 101 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 OPERATING IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY A FIRE OR EXPLOSION WARNING... -
Page 53: Lighting & Operation Label - Ajwsh130 400 104
lighting & operation label - ajwsh130 400 104 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. -
Page 54: Troubleshooting
2.0 AC amps for AJWSH130 300 7. Ensure all exterior clearances for the intake air, vent and 100/101 Series and AJWSH130 400 101 series only, and concentric terminations are maintained. See Vertical 3.1 AC amps for AJWSH130 400 104 series. -
Page 55: Sequence Of Operation Flow Chart
seQuence of operation flow chart 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 All other pressure switches and ECO are verified closed... -
Page 56: Operational Problems
operational problems • Excessive manifold gas pressure - see Table 3 on page 13 and Manifold gas Pressure Adjustment on page 50. • Vent (exhaust) gas recirculation at the vent and intake air pipe terminations on Direct Vent installations - see Direct Vent Installation on page 22. -
Page 57: Fault And Alert Conditions
• Colder incoming water temperature lengthening the time alert conditions required to heat water to desired temperature. When the control system declares an Alert condition it will display • Hot water piping leaks, open faucets, water heater drain an Alert message on the control system's LCD with a question "?" valve leaking or open. - Page 58 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 • The water heater’s control system is polarity sensitive and will lock AC Reversed out and disable heating operation if the polarity of the power supply is reversed.
- Page 59 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 • The control system has detected the blower Prover Switch Blower Prover Failure contacts are closed when they should be open at the beginning of a heating cycle - see the Sequence Of Operation on page 59.
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Page 60: Maintenance
maintenance general maintenance schedule keep water heater area clear and free from combustible table 13 materials, gasoline and other flammable vapors and liquids. See component operation interVal reQuired Locating The Water Heater on page 11. Tank Sediment Semi Annually Flushing Water heater maintenance includes periodic tank flushing and removal cleaning, and removal of lime scale. -
Page 61: Filling The Water Heater
to flush the tank perform the following steps: 1. Turn off the electrical supply to the water heater. CLEANOUT TANK ACCESS PANEL 2. Ensure the cold water inlet valve is open. CLEANOUT CLEANOUT 3. Open a nearby hot water faucet and let the water run until OPENING GASKET the water is no longer hot. -
Page 62: Powered Anode Rods
table 14 TEMPERATURE-PRESSURE un-lime® professional delimer RELIEF VALVE part number description 9005416105 4 - 1 gallon (case) 9005417105 1 - 5 gallon powered anode rods DISCHARGE PIPE To insure a long, trouble-free operating life, the water heaters Figure 60 covered in this manual are factory equipped with a powered If the Temperature-Pressure relief Valve on the water heater anode system. -
Page 63: Diagrams
diagrams ccb - central control board layout CCB (CENTRAL CONTROL BOARD) 1 Retry Retries Input Type Tstat Vent Spare Spare S1 DIPSWITCH S1 DIPSWITCH DETAIL 1 Retry Retries Input Type Tstat Vent Spare Spare Dipswitch Operation: Along one side of the dipswitch array there are numbers, 1-4. On the other side of the dipswitch is the word “OPEN.”... -
Page 64: Ajwsh130300 Wiring Diagram
ajwsh130300 wiring diagram LOW GAS 24 VAC BLOCKED BLOCKED BLOWER PRESSURE SWITCH GAS VALVE AIR INTAKE PROVER EXHAUST ENABLE/DISABLE CIRCUIT JUMPER WIRE BETWEEN PINS 8 AND 11 ON J6 PLUG HOT SURFACE IGNITER 1 BLACK 2 WHITE FLAME SENSOR 1 RED (ECO) 2 BLACK 3 BLACK UPPER TEMPERATURE PROBE... -
Page 65: Ajwsh130400 Wiring Diagram
ajwsh130400 wiring diagram LOW GAS 24 VAC BLOCKED BLOWER BLOCKED PRESSURE SWITCH GAS VALVE INTAKE AIR EXHAUST PROVER ENABLE/DISABLE CIRCUIT JUMPER WIRE BETWEEN PINS 8 AND 11 ON J6 PLUG HOT SURFACE IGNITER 1 BLACK 2 WHITE FLAME SENSOR 1 RED (ECO) 2 BLACK 3 BLACK UPPER TEMPERATURE PROBE... -
Page 66: 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 APPLIANCE AS THIS MAY CAUSE ELECTRICAL LINE NOISE AND LEAD TO ERRATIC CONTROL SYSTEM OPERATION. - Page 69 AMERICAN STORAGE TANK...
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Page 74: Notes
notes... -
Page 75: Limited Warranty
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 76 599 Hill Street West Fergus, ON Canada N1M 2X1...
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