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TABLE OF CONTENTS
ROUGH-IN-DIMENSIONS -------------------------------- 2
FOREWORD ------------------------------------------------- 3
GENERAL SAFETY INFORMATION ------------------- 4
Precautions --------------------------------------------------- 4
Grounding Instructions ------------------------------------- 4
Chemical Vapor Corrosion -------------------------------- 4
Improper Combustion -------------------------------------- 4
Extended non-use Periods -------------------------------- 4
Insulation Blankets ------------------------------------------ 4
High Altitude Installation ----------------------------------- 5
FEATURES --------------------------------------------------- 5
High Limit Switch -------------------------------------------- 5
Electronic Ignition Control --------------------------------- 5
Exhaust Inducer (Blower Assy.)-------------------------- 5-6
Circulating Pump -------------------------------------------- 6
Dishwashing Machine Requirement -------------------- 6
INSTALLATION INSTRUCTIONS ----------------------- 6
Required Ability ---------------------------------------------- 6
Uncrating ------------------------------------------------------ 6
Locating The Heater ---------------------------------------- 6-7
Levelling ------------------------------------------------------- 7
Clearances ---------------------------------------------------- 7
Hard Water ---------------------------------------------------- 7
Air Requirements -------------------------------------------- 7-8
Venting --------------------------------------------------------- 8
Multiple Heater Manifold ----------------------------------- 8
Technical Data Venting------------------------------------- 9
Water Line Connections ----------------------------------- 10
Water (Potable) Heating and Space Heating -------- 10
Thermometers (Not Supplied) --------------------------- 10
Relief Valve --------------------------------------------------- 10
INSTALLATION DIAGRAMS-TOP
INLET/OUTLET USAGE ----------------------------------- 11
General -------------------------------------------------------- 11
Code Restrictions ------------------------------------------- 11
INSTALLATION DIAGRAMS ------------------------------ 12-17
Heater Wiring ------------------------------------------------- 18
Gas Piping ---------------------------------------------------- 19
Purging --------------------------------------------------------- 19
Gas Pressure Regulator ----------------------------------- 19-20
OPERATION -------------------------------------------------- 20
General -------------------------------------------------------- 20
Filling ----------------------------------------------------------- 20
SEQUENCE OF OPERATION --------------------------- 21
Lighting and Operation------------------------------------- 22
Water Temperature Control ------------------------------- 23
Checking Venting-------------------------------------------- 23
PREVENTIVE MAINTENANCE -------------------------- 23
Check The Ignitor Assembly------------------------------ 23
Ignitor Assembly --------------------------------------------- 23-24
Main Burner --------------------------------------------------- 24
Gas Valves ---------------------------------------------------- 24
Checking The Input ----------------------------------------- 24
Venting System ---------------------------------------------- 25
Remote Storage Tank Temperature Control ---------- 25
Relief Valve --------------------------------------------------- 25
Hot Water Odor ---------------------------------------------- 25
Anode Rod Inspection ------------------------------------- 25
Flushing -------------------------------------------------------- 25
Draining -------------------------------------------------------- 25
Recommended Procedure For Periodic
Removal of Lime Deposits From Tank Type
Commercial Water Heaters------------------------------- 26
Tank Cleanout Procedures-------------------------------- 26-27
Ignition Module System ------------------------------------ 27
System Diagnostics----------------------------------------- 27
SERVICE ------------------------------------------------------ 27
Electrical Servicing------------------------------------------ 27
Sequence of Operation Flow Chart --------------------- 28
Operational Checklist -------------------------------------- 29
NOTES --------------------------------------------------------- 30
Limited Warranty -------------------------------------------- 31
Page Page
FOREWORD
These designs comply with ANSI Z21.10.3 as an automatic
circulating or automatic storage tank type water heater.
Heater model having an input of 390,000 Btuh also complies 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.
The heater is designed to operate on natural gas only. If you
have obtained this heater for use on propane-STOP. Do not install
this water heater. Immediately call your supplier to correct the
situation.
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.
The installation must conform to these instructions and the local
code authority having jurisdiction. 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, documents are available
from the National Fire Protection Association, 1 Batterymarch
Park, Quincy, MA 02269.