Install Instructions

5
FOREWORD
This design complies with the current edition of the ANSI Standard
Z21.10.3 for gas water heaters Vol. III Storage Water Heaters
with input ratings above 75,000 BTU per hour Circulating and
Instantaneous.
Detailed installation instructions are in this manual. These
instructions will serve to provide the installer with a reference for
the materials and method of piping suggested. IT IS ESSENTIAL
THAT ALL WATER AND GAS PIPING AND THE ELECTRICAL
WIRING BE INSTALLED AND CONNECTED AS SHOWN IN
THE DIAGRAMS.
You should thoroughly read and understand this manual before
installation and operation of this unit.
CHECK THE DIAGRAMS THOROUGHLY BEFORE STARTING
INSTALLATION TO AVOID POSSIBLE ERRORS AND TO
MINIMIZE TIME AND MATERIALS COST.
Particular attention should be given to the installation of
thermometers at the locations indicated in the diagrams as these
are necessary for checking the operation of the heater.
MAKE SURE THE GAS ON WHICH THE HEATER WILL
OPERATE IS THE SAME AS THAT SPECIFIED ON THE HEATER
MODEL AND RATING PLATE.
The factory warranty will be void if the unit(s) have been improperly
installed or operated.
In addition to these instructions, the water heater(s) 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.
To comply with NSF Standard 5 installation requirements the
bottom of the water heater must be sealed to the oor with a
silicone based sealant or elevated 6 inches above the oor.
In absence of local codes, the installation must comply with the
latest editions.
In the United States:
The National Fuel Gas Code, ANSI Z223.1 and the National
Electric Code, NFPA 70.
In Canada:
The Installation Code CAN/CGA B149.1 and .2 (latest edition) and
the Canadian Electric Code, CSA C22.1.
These are available from the Canadian Standards Association,
8501 East Pleasant Valley Road, Cleveland, OH 44131, USA, or,
Canadian Gas Association Laboratories, 55 Scarsdale Road, Don
Mills, Ontario M3B 2R3, Canada.
TABLE OF CONTENTS
GENERAL SAFETY INFORMATION .................................................... 2
ROUGH-IN DIMENSIONS .................................................................... 4
FOREWORD ........................................................................................ 5
Precautions ..................................................................................... 5-6
Grounding Instructions .................................................................... 6
Chemical Vapor Corrosion .............................................................. 6
Propane Gas Models ....................................................................... 6
High Altitude Installations ................................................................ 6
FEATURES ........................................................................................... 7
Automatic Gas Shutoff Control ........................................................ 7
Protector Switch (Coil High Limit) .................................................... 7
Thermal Balancer ............................................................................ 7
Intermittent Ignition Control Module ................................................ 7-8
Circulating Pump ............................................................................. 8
Tank Temperature Control (Not Supplied) ....................................... 8
Safety Flow Switch (Not Supplied) .................................................. 8-9
Drain Valve (Not Supplied) .............................................................. 9
Thermometers (Not Supplied) ......................................................... 9
INSTALLATION INSTRUCTIONS ........................................................ 10
Important ......................................................................................... 10
Required Ability ............................................................................... 10
Location ........................................................................................... 10
Installation Clearances .................................................................... 10
Levelling .......................................................................................... 10
Air Requirements ............................................................................. 10-11
Venting ............................................................................................ 11
Relief Valve ..................................................................................... 11-12
Hard Water ...................................................................................... 12
Closed Water Systems .................................................................... 12
Thermal Expansion ......................................................................... 12
Water Line Connections .................................................................. 12
Water (Potable) Heating .................................................................. 12
PIPING DIAGRAMS ............................................................................. 13
Gas Connections ............................................................................. 16-17
Electrical Information ....................................................................... 17-18
OPERATION ......................................................................................... 19
Important ......................................................................................... 19
General ............................................................................................ 19
Filling ............................................................................................... 19
Gas Line Leak Testing ..................................................................... 19
Purging ............................................................................................ 19
Operating Instructions For I.I.D Models. .......................................... 20
Checking And Adjusting The Input .................................................. 21
SERVICE INFORMATION .................................................................... 22
Pilot And Main Burner Maintenance ................................................ 22
I.I.D. Pilot Burner ............................................................................. 22
Protector Switch (Coil High Limit-All Heaters) ................................. 23
Tank Temperature Control ............................................................... 23
Automatic Gas Shutoff Control ........................................................ 23
Thermal Balancer ............................................................................ 23
Inspecting The Heat Exchanger And Venting System ..................... 23
Gas Pressure Regulator .................................................................. 22
Relief Valve ..................................................................................... 24
Circulating Pump ............................................................................. 24
Electrical Service ............................................................................. 24
Replacement Parts .......................................................................... 24
PREVENTIVE MAINTENANCE ............................................................ 24
Recommended Procedure For Periodic Removal Of Lime
Deposits From Coil Type Commercial Water Heaters ..................... 24-25
Deliming Solvents ............................................................................ 25
Removing Light Deposits ................................................................ 25
Heavy Lime Deposits ...................................................................... 25-26
CHECKOUT ......................................................................................... 26
LIMITED WARRANTY .......................................................................... 35
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GENERAL SAFETY INFORMATION
PRECAUTIONS
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN
UNDER WATER. Immediately call a qualied service agent to
inspect the water heater and to replace any part of the control
system and any gas control which has been under water.
IF THE UNIT IS EXPOSED TO THE FOLLOWING, DO NOT
OPERATE HEATER UNTIL ALL CORRECTIVE STEPS HAVE
BEEN MADE BY A QUALIFIED SERVICE AGENT.
1. EXTERNAL FIRE.
2. DAMAGE.
3. FIRING WITHOUT WATER.
4. SOOTING
KEEP THE HEATER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS. AREA AROUND HEATER
MUST NOT CONTAIN OBSTRUCTING MATERIAL TO THE FLOW
OF COMBUSTION AND VENTILATING AIR.