Assessments - 1, GPA: 5
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8 Air Requirements ........................................................................... 8-9 Venting ........................................................................................... 9 Relief Valve .................................................................................... 9-10 Hard Water ..................................................................................... 10 Closed Water System .................................................................... 10 Water Line Connections ................................................................ 10 Water (Potable) Heating ................................................................ 10 GENERAL SAFETY INFORMATION PRECAUTIONS If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified serviceman: 1. FLOODING TO LEVEL OF BURNER OR CONTROLS OR HIGHER. 2. EXPOSURE TO FIRE. The factory warranty will be void if the unit(s) have been improperly installed or operated. In addition to these instructions, the boiler(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. 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. PAGE PIPING DIAGRAMS ............................................................................ 11-13 Gas Connections ........................................................................... 14-15 Electrical Information ..................................................................... 15-16 OPERATION ........................................................................................ 17 Important ....................................................................................... 17 General ........................................................................................... 17 Filling .............................................................................................. 17 Purging Of Gas Line ...................................................................... 17 Operating Instructions For I.I.D Models. ....................................... 18 Checking And Adjusting The Input ................................................. 19 SERVICE INFORMATION .................................................................. 20 Pilot And Main Burner Maintenance ............................................... 20 I.I.D. Pilot Burner ........................................................................... 20-21 Protector Switch (Coil High Limit-All Heaters) ............................... 21 Tank Temperature Control .............................................................. 21 Automatic Gas Shutoff Control ..................................................... 21 Thermal Balancer ........................................................................... 21 Inspecting The Heat Exchanger And Venting System .................. 21-22 Gas Pressure Regulator ................................................................ 22 Relief Valve ................................................................................... 22 Circulating Pump ............................................................................ 22 Electrical Service ........................................................................... 22 Replacement Parts ........................................................................ 22 PREVENTIVE MAINTENANCE ........................................................... 22 Recommended Procedure For Periodic Removal Of Lime Deposits From Coil Type Commercial Water Heaters ................. 22-23 Deliming Solvents .......................................................................... 23 Removing Light Deposits .............................................................. 23 Heavy Lime Deposits ................................................................... 23-24 CHECKOUT ........................................................................................ 24-27 LIMITED WARRANTY ........................................................................ 28 3. IF DAMAGED. 4. FIRING WITHOUT WATER. 5. SOOTING. KEEP THE HEATER AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS. AREAAROUND HEATER MUST NOT CONTAIN OBSTRUCTING MATERIAL TO THE FLOW OF COMBUSTION AND VENTILATING AIR. 3 SHOULD OVERHEATING OCCUR OR TH...
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