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Boiler, Heating Appliance, and VWH* Models

The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for 

typographical errors in literature.

NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.

272 Duchaine Blvd.

New Bedford, MA 02745

www.htproducts.com 

LP-447 Rev. 7.7.17

*VWH Models: The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by 

weight as required by the Safe Drinking Water Act, Section 1417.

Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property 

damage, severe personal injury, or death.

IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING 

PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR OTHER FLAMMABLE VAPORS 

AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

WHAT TO DO IF YOU SMELL GAS

•  Do not try to light any appliance.

•  Do not touch any electrical switch.

•  Do not use any phone in your building.

•  Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•  If you cannot reach your gas supplier, call the fire department. Installation and service must be provided by a qualified 

installer, service agency, or the gas supplier.

User’s Information 

Manual

The following defined terms are used throughout this manual to 

bring attention to the presence of hazards of various risk levels or 

to important product information.

DANGER 

indicates an imminently hazardous situation which, if not 

avoided, will result in serious personal injury or death.

WARNING 

indicates a potentially hazardous situation which, if not 

avoided, could result in personal injury or death.

CAUTION 

indicates a potentially hazardous situation which, if not 

avoided, may result in moderate or minor personal injury.

CAUTION used without the safety alert symbol 

indicates a 

potentially hazardous situation which, if not avoided, may result in 

property damage.

NOTICE 

is used to address practices not related to personal injury.

Summary of Contents for VWH Series

Page 1: ...SMELL GAS Do not try to light any appliance Do not touch any electrical switch Do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be provided by a qualified installer service agency or the gas supplier User s Information M...

Page 2: ... 5 Part 2 Combustion Air Contamination Prevention 5 Part 3 Maintenance Schedule 5 A Service Technician 5 B Owner Maintenance 6 Part 4 Maintenance Procedures 6 A Daily Maintenance 6 B Monthly Maintenance 7 C 6 Month Maintenance 7 D Annual Maintenance To be performed by a Qualified Service Technician 8 Part 5 Troubleshooting 9 Maintenance Notes 10 ...

Page 3: ...r block the flow in or out of the vent system All safety devices must be tested after the appliance is installed Always verify proper appliance operation after servicing If an Error or Fault Code is displayed on the appliance contact a qualified service technician The gas ignition system components must be protected from water dripping spraying rain etc during appliance operation and service circu...

Page 4: ...ing in flue gas spillage and or water leakage possible substantial property damage severe personal injury or death If the appliance combustion air intake is located in any area likely to cause or contain contamination or if products which would contaminate the air cannot be removed the intake must be re piped and terminated to another location DO NOT re pipe ventilation system on your own Call a q...

Page 5: ...g is undamaged and in good condition Check the pressure relief valve Check the condensate drain system If applicable check the condensate neutralizer and ensure it is full of condensate neutralizing marble chips Every 6 Months Check appliance piping and gas supply piping for corrosion or signs of potential leakage Part 4 Maintenance Procedures The appliance must be inspected and serviced annually ...

Page 6: ...low the appliance to operate correctly contact your qualified service technician to inspect the appliance and the vent system C 6 Month Maintenance Check Primary and Gas Piping Remove the appliance cover and perform a gas leak inspection following Operating Instructions page 2 this manual If gas odor or leak is detected follow procedures on page 2 Call a qualified service technician Visually inspe...

Page 7: ... weep contact a qualified service technician to inspect the valve and system If water does not flow from the valve when you completely lift the lever the valve or discharge line may be blocked Immediately shut the appliance down per instructions on page 2 and call a qualified service technician to inspect the valve and system D Annual Maintenance To be performed by a Qualified Service Technician C...

Page 8: ...eater Make sure any filters in the cold water supply line are not clogged with debris Make sure the appliance is connected to the correct gas supply Hot Water Temperature Fluctuates VWH Models Make sure any filters in the cold water supply line are not clogged with debris Make sure the appliance is connected to the correct gas supply Make sure the supply gas pressure is sufficient Blower Continues...

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