John Wood Commercial Atmospheric Vent - AJWSM - Manual (Page 3)

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TABLE OF CONTENTS
ROUGH-IN-DIMENSIONS .................................................2-3
TABLE OF CONTENTS .........................................................4
FOREWORD .........................................................................4
GENERAL SAFETY INFORMATION .....................................5
Chemical Vapor Corrosion .....................................................5
Improper Combustion ............................................................5
Liquid Petroleum Models .......................................................5
Extended Non-Use Periods ...................................................5
Insulation Blankets .............................................................5-6
High Altitude Installation ........................................................6
FEATURES ............................................................................6
The Eliminator (Self-Cleaning System) .................................6
High Limit Switch (E.C.O.) ..................................................6-7
Electronic Ignition Control......................................................7
Automatic Flue Damper Device .............................................7
Circulating Pump ...................................................................7
Dishwashing Machine Requirement ...................................7-8
INSTALLATION INSTRUCTIONS .........................................8
Uncrating ...............................................................................8
Locating The Heater ..............................................................8
Levelling ................................................................................8
Clearances .........................................................................8-9
Installation on Combustible Flooring .....................................9
Hard Water ............................................................................9
Air Requirements ..............................................................9-10
Unconfined Space ...............................................................9
Confined Space .................................................................10
Vent Reducer .......................................................................10
Venting.................................................................................10
Multiple Heater Manifold ......................................................10
Water Line Connections ......................................................10
Technical Data Venting ...................................................11-12
Water (Potable) Heating and Space Heating ......................13
Thermometers (Not Supplied) .............................................13
Relief Valve ..........................................................................13
Gas Piping ......................................................................13-14
Gas piping and Dirt Leg Installation................................14-15
Gas Pressure Regulator ......................................................15
Grounding Instructions ........................................................15
Heater Wiring.......................................................................15
INSTALLATION DIAGRAMS ..........................................15-21
MANIFOLDS ........................................................................22
MECHANICAL VENTING ....................................................23
Single Unit Installation .........................................................23
Vent Installation ...................................................................23
Multiple Unit Installation.......................................................23
OPERATION ........................................................................24
General ................................................................................24
Filling ...................................................................................24
Purging ................................................................................24
Lighting and Operating Labels........................................25-26
Water Temperature Control .................................................27
Testing Damper Control .......................................................27
Checking Venting............................................................27-28
PREVENTIVE MAINTENANCE ...........................................28
Check The Pilot ...................................................................28
Pilot Burner ..........................................................................28
Main Burner ....................................................................28-29
Gas Valves ..........................................................................29
Checking The Input .............................................................29
Venting System....................................................................30
Remote Storage Tank Temperature Control ........................30
Relief Valve ..........................................................................30
Hot Water Odor ...................................................................30
Anode Rod Inspection .........................................................30
Recommended Procedure For Periodic Removal
of Lime Deposits From Tank Type Commercial
Water Heaters ................................................................30-31
Deliming Solvents ................................................................31
Tank Cleanout Procedures .............................................31-32
Troubleshooting Ignition Module System ............................32
SERVICE .............................................................................32
Electrical Servicing ..............................................................32
Replacement Parts ..............................................................32
Effikal Flue Damper Troubleshooting Guide ........................33
Operational Checklist ..........................................................34
Limited Warranty .................................................................35
Page Page
FOREWORD
These designs comply with ANSI Z21.10.3/CSA 4.3 as an automatic
circulating or automatic storage tank type water heater.
Heaters having an input of 305,000 (89 Kwh), 365,000 (107 Kwh),
390,000 (114 Kwh) and 500,000 (147 Kwh) Btuh with a recovery
rating of 277.3 gph (1049 Lph) or more also comply with ANSI
Z21.10.3 as an automatic instantaneous type heater.
Detailed installation diagrams are found in this manual. These
diagrams will serve to provide the installer with a reference for the
materials and methods of piping necessary. It is highly essential that
all water, gas piping and wiring be installed as shown on the
diagrams.
Particular attention should be given to the installation of
thermometers at the locations indicated on the diagrams as these
are necessary for checking the proper functioning of the heater.
This model water heater is designed and manufactured in both
natural gas and propane versions. MAKE SURE the gas on which
the heater will operate is the same as that specified on the heater
model and rating plate.
These heaters may be installed on combustible floors.
In addition to these instructions, the equipment shall be installed
in accordance with those installation regulations in force in the
local area where the installation is to be made. These shall be
carefully followed in all cases. Authorities having jurisdiction should
be consulted before installations are made.
In the absence of local codes, the installation must comply with
the current editions of the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 and the National Electrical Code, NFPA 70 or CAN/
CSA-B149.1, the Natural Gas and Propane Installation Code
and CSA C22.1, the Canadian Electrical Code. All documents are
available from the Canadian Standards Association, 8501 East
Pleasant Valley Road, Cleveland, OH 44131. NFPA documents
are also available from the National Fire Protection Association,
1 Batterymarch Park, Quincy, MA 02269.
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