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Operating Instructions
PrecisionTemp – RV-500
The RV-500 is certified as a direct vent automatic instantaneous water heater designed to be
installed in recreational vehicles or mobile homes. This appliance must be installed in accor-
dance with local codes or in the absence of local codes the following applies:
Manufactured Home: Standard, Title 24 CFR, Part 3280
Recreational Vehicle: Standard ANSI A119.2/NFPA 501C-1987
Every water heater is inspected and tested before it leaves the factory. In order for this unit
to operate safely and effectively, all installation instructions must be followed. Failure to
comply with all installation and operating instructions will void the warranty. PrecisionTemp,
Inc. will not be responsible for anything that is a result of non-compliance
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
• Extinguish any open flame.
• Shut off the gas supply at the gas
container or source
• Do not touch any electrical switch
or use any phone or radio in the
vehicle.
• Do not start the vehicle's engine
or electrical generator.
• Contact the nearest gas supplier
or qualified service technician for
repairs.
• If you can not reach a gas sup-
plier
or
technician, contact the nearest fire
department.
• Do not turn on the gas supply until
the gas leak(s) has been repaired.
Keep this book with the water heater at all times. It contains instructions regarding installa-
tion, operation and maintenance of your water heater.
contact your dealer, your nearest service center or PrecisionTemp Inc.
Rev. 4/07
Instantaneous Gas Water Heater
Installation and Operating Instructions
qualified
service
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE
OR OTHER FLAMMABLE VAPORS
AND LIQUIDS IN THE VICINITY OF
THIS OR ANY OTHER APPLIANCE.
WARNING!
Improper installation, adjustment, altera-
tion, service or maintenance can cause
property damage, personal injury or loss
of life. Refer to the installation instruc-
tions
and/or
operating
provided with this appliance. A qualified
installer service agency or the gas sup-
plier must perform installation and
service.
If you need further information,
instructions
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Summary of Contents for PrecisionTemp RV-500
- Page 1 Instantaneous Gas Water Heater Installation and Operating Instructions The RV-500 is certified as a direct vent automatic instantaneous water heater designed to be installed in recreational vehicles or mobile homes. This appliance must be installed in accor- dance with local codes or in the absence of local codes the following applies: Manufactured Home: Standard, Title 24 CFR, Part 3280 Recreational Vehicle: Standard ANSI A119.2/NFPA 501C-1987...
- Page 2 Installing Heater In The Side Wall Of A Coach The RV-500 can be installed as a flush mount or a surface mount. The model RV-500 refers to the heater ordered with the flush mount door kit. The model RV-500-1 refers to the heater ordered with the surface mount door.
- Page 3 3/4” Thick Spacer 3/4” Place the bottom of the back of the RV-500-1 on the bottom frame of the opening. Tilt the water heater back and feed the gas line through the gas line grommet. (Note: If there is no access from the inside of the coach to the back of the water heater compartment the water lines and electrical must be connected at this stage.
- Page 4 Refer to those sections of this manual). • Push the RV-500 into the opening. Center the heater in the opening and start a screw in the top center hole. •...
- Page 5 • Remove the door and tighten the top center screw • Apply silicone or other appropriate sealant under the RV-500 flange. Push unit into open- ing to bed into the sealant. • Now screw in the other three center screws. Apply silicone or other appropriate sealant heavily in the corners and completely around the flange.
- Page 6 Note: There is no need for a bypass kit when installing the RV-500. It is recommended any bypass kit be removed. If a bypass kit is installed the valve must be in the off position or the heater will not operate properly.
- Page 7 The RV-500 is designed to give a continuous flow of hot water as long as required and main- tain the approximate set temperature through all flow rates within the capacity of the heater (85°F temperature rise per GPM).
- Page 8 Routine Maintenance All faucet aerators and showerhead screens should be cleaned regularly. It is recommended that the RV-500 be inspected by a qualified service technician at least once a year. Particular attention should be paid to the following: 1. Be sure that the air inlet openings and flue area are clear of any debris or obstructions, (leaves, bug nests, spider webs, etc.)
- Page 9 2. Recommendations of your coach manufacturer should be followed. Since the RV-500 has no storage tank, there is no need for a water heater bypass kit. It holds less than one pint of anti-freeze.
- Page 10 Troubleshooting The RV-500 is equipped with self-diagnostics. In the event the red LED is flashing please re- fer to the Service Codes section. Most problems are easily remedied by consulting the trouble-shooting guide. If problems still persist, contact PrecisionTemp or an authorized service center. Only a qualified technician should do any work involving the gas system.
- Page 11 To secure the window, line up the guides, firmly push to seat and turn clockwise. 5. Check flame site hole to see if igniter is sparking from the probe to the burner. Bend ig- nition wire to adjust to proper gap or contact PrecisionTemp or your nearest authorized service representative.
- Page 12 These should be cleaned and the any showerhead flow restrictor re- moved as defined in “Recommendations for Water System Installation” 3. The VariFlame gas modulating valve is out of calibration. Consult PrecisionTemp. Heater Does Not Ignite When Water Is Turned On The gas flow may be too low due to an improper gas line diameter (under 3/8 inch outside di- ameter).
- Page 13 This will keep the heater from functioning properly. If any problem persists, contact an authorized service center or PrecisionTemp. PrecisionTemp...
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