Raypak NH, 0133-4001 WH manual General Safety Precautions

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!General Safety Precautions

Be sure to read and understand the entire Instruction Manual before attempting to install or operate this water heater. Pay particular attention to the following general Safety Precautions. Failure to follow these warnings could result in a fire or explosion, causing property damage, bodily injury or death. Should you have any problems understanding the instructions in this manual, STOP, and get help from a qualified installer or service technician or the gas supplier.

!WARNING

Gasoline, as well as other flammable materials and liquids (adhesives, solvents, etc.), and the vapors they produce, are extremely dangerous. DO NOT handle, use or store gasoline or other flammable or combustible materials anywhere near or in the vicinity of a water heater. Be sure to read and follow the warning label pictured below and other labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in property damage, bodily injury, or death.

!DANGER

Failure to install the drafthood and properly vent the water heater to the outdoors as outlined in the Venting Section of this manual can result in unsafe operation of the water heater. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, never operate this water heater unless it is properly vented and has an adequate air supply for proper operation. Be sure to inspect the vent system for proper installation at initial start-up; and at least annually thereafter. Refer to the Venting section of this manual (pg. 11) for more information regarding vent system inspections.

!DANGER

!DANGER

PROPANE MODELS – Propane must be used with great caution.

It is heavier than air and will collect first in lower areas making it hard to detect at nose level.

Make sure to look and smell for propane leaks before attempting to light appliance. Use a soapy solution to check all gas fittings and connections. Bubbling at a connection indicates a leak that must be corrected. When smelling to detect a propane leak, be sure to sniff near the floor too.

Gas detectors are recommended in propane applications and their installation should be in accordance with the manufacturer's recommendations and/or local laws, rules, regulations or customs.

It is recommended that more than one method be used to detect leaks in propane applications.

IF PROPANE IS PRESENT OR SUSPECTED:

DO NOT attempt to find the cause yourself;

DO NOT try to light any appliance;

DO NOT touch any electrical switch;

DO NOT use any phone in your building.

Leave the building immediately and make sure that every- one else leaves also.

Leave the doors open for ventilation and contact the gas supplier, a qualified service agency or the fire department.

Keep the area clear until the service call has been made, the leak is corrected, and a qualified agency has determined the area to be safe.

!WARNING

Vapors from flammable liquids will explode and catch fire causing death or severe burns.

Do not use or store flammable products such as gasoline sol- vents or adhesives in the same room or area near the water heater.

Keep flammable products:

1.Far away from heater,

2.In approved containers,

3.Tightly closed and

4.Out of children's reach.

Water heater has a main burner and pilot flame.

The pilot flame:

1.Is on all the time or intermit- tently (IID).

2.Will ignite flammable va- pors.

Vapors:

1.Cannot be seen,

2.Are heavier than air,

3.Go a long way on the floor,

4.Can be carried from other rooms to the pilot flame by air currents.

Both propane and natural gas have an odorant added to help detection. Some people may not physically be able to smell or recognize this odorant. If unsure or unfamiliar about the smell associated with propane or natural gas, ask the gas supplier. Other conditions, such as "Odorant Fade", which causes the odorant to "fade", or diminish in intensity can also hide or camouflage a gas leak.

!DANGER

Water heaters utilizing propane are different from natural gas models. A natural gas heater will not function safely on propane and vice versa. Conversion from natural gas to propane (or vice versa) must be done by a qualified service technician. To avoid possible equipment damage, personal injury or fire: DO NOT connect this water heater to a fuel type not in accordance with unit data plate. Use propane for propane units, natural gas for natural gas units. These units are not certified for any other type fuel.

Installation:

Do not install water heater where flammable products will be stored or used unless the main burner and pilot flames are at least 18" above the floor. This will reduce, but not eliminate, the

risk of vapors being ignited by the main burner or pilot flame.

Read and follow water heater warnings and instructions. If

owners manual is missing, contact the retailer or manufacturer.

!WARNING

Propane appliances should not be installed below-grade (for example, in a basement) if such installation is prohibited by federal, state and/or local laws, rules, regulations or customs.

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Contents Installation Operating Instructions For Your SafetyTable of Contents General Specifications Receiving Equipment ALL Models ApprovedModel Identification HOT Water Supply HeatersGeneral Safety Precautions Installation Instructions Installation CodesClearances Specifications and Dimensions ModelModels Models Outdoor Water Heaters High Wind Conditions Outdoor Units OnlyOutdoor Installations VentingIndoor Installations Before After Installation DrafthoodVent TERMINAL/INDOOR Stack Installation Vent Piping Fig. #7043.1Vent Damper Installation Models 133 Through 261 Where Required LocationVent Damper General PlumbingGAS Supply Connections GAS Pressure Regulator Venting of Diaphragm GAS ComponentsFlow Rates General Specifications UNI-TEMP 80 HOT Water Supply Systems Piping Domestic HOT Water Supply HeatersPiping Diagrams Type WH Unitemp 80 System Type NH Instantaneous Minimum Input Adjustment Type NH Dual ModelsControls General Relief ValveElectronic Ignition Economaster ControlFlow Switch 100% Pilot SafetyHigh and LOW GAS Pressure Switches Optional Limit Controls High LimitComponent Identification SINGLE-STAGE Tankstat Electrical ConnectionsON/OFF Units 400 WH1, WH2, WH3 LOW NOx WH1 Location of ControlsFig. #9334 START-UP Procedures Before START-UP Initial START-UP Pump and MotorTIME/TEMPERATURE Relationships in Scalds ScaldingFor Your Safety Read Before Operating Operating InstructionsTo Turn OFF GAS to Appliance For Models with Manual GAS ValvesInspection Procedures Burners After START-UPControls For Models with Automatic GAS ValvesInspection Procedures Burner Adjustment High GAS Pressure SwitchSTART-UP Procedures Visual InspectionBurner Tray Removal Pilot RemovalGAS Valve Removal Main Burner and Orifice RemovalTroubleshooting Electrical Honeywell S8600Wiring Diagrams Wiring Diagram WH2 182/260 Wiring Diagram WH2 330/400 Wiring Diagram WH2 514/624 Wiring Diagram WH2 Wiring Diagram WH2 Wiring Diagram WH2 Wiring Diagram WH2 Wiring Diagram WH1 181/261 LOW NOx Wiring Diagram WH1 331/401 LOW NOx Troubleshooting Mechanical Problem Possible Cause Corrective ActionService and Maintenance Procedures Troubleshooting PumpsTube Cleaning Pilot Removal and Cleaning High Limit or Tankstat RemovalHeat Exchanger Removal Typical Burner Tray IllustratedControl Well Replacement Heat Exchanger RE-ASSEMBLYTube Replacement Replacement Parts Cleaning Flue GAS PassagewaysCatalog Model Number Warranty Scope