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AP15419 (11/09)

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FOR YOUR SAFETY!

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 Do not store or use gasoline or other 
flammable vapors or liquids or other 
combustible materials in the vicinity of 
this or any other appliance. To do so may 
result in an explosion or fire.

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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.

 

 

Do not return to your home until authorized 

by the gas supplier or fire department.

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Improper installation, adjustment, 
alteration, service or maintenance can cause 
property damage, personal injury or death. 
Refer to this manual. Installation and service 
must be performed by a qualified installer, 
service agency or the gas supplier.

 

WARNING:  If the information in these instructions is not followed exactly, 
a fire or explosion may result, causing property damage, personal injury or death.

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The purpose of this manual is twofold: one, to provide the installer with 
the basic directions and recommendations for the proper installation 
and adjustment of the water heater; and two, to the owner–operator, 
to explain the features, operation, safety precautions, maintenance and 
troubleshooting of the water heater. This manual also includes a parts 
list.

It is very important that all persons who are expected to install, operate 
or adjust this water heater read the instructions carefully so they may 
understand how to perform these operations. If you don’t understand 
these instructions or any terms within it, seek professional advice.

Any questions regarding the operation, maintenance, service or warranty 
of this water heater should be directed to the seller from whom it was 
purchased. If additional information is required, refer to the section on 
If You Need Service.

Do not destroy this manual. Please read carefully and keep in a safe 
place for future reference.

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Recognize this symbol as an indication of Important Safety 
Information!

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California Proposition 65 Warning:

 

This product contains 

chemicals known to the State of California to cause cancer, birth 
defects or other reproductive harm.

Use & Care Manual

With Installation Instructions for the Installer

Tankless 

Water Heater

DESIGN

CERTIFIED

®

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Warning: This water heater is not suitable 

for use in manufactured (mobile) homes!

Direct Vent Gas

CERTIFIED

R

31-93681-00

R

Models
PH2-20R DVSN (Natural Gas); PH2-20R DVSP (L.P. Gas)
PH2-25R DVSN (Natural Gas); PH2-25R DVSP (L.P. Gas)
PH2-28R DVSN (Natural Gas); PH2-28R DVSP (L.P. Gas)

Summary of Contents for PH2-20R DVSN

Page 1: ...wo to the owner operator to explain the features operation safety precautions maintenance and troubleshooting of the water heater This manual also includes a parts list It is very important that all p...

Page 2: ...y over the life of your water heater You ll find many answers to common problems in the Troubleshooting Guide If you review the chart of Troubleshooting Tips first you may not need to call for service...

Page 3: ...terials and liquids which include but are not limited to adhesives solvents paint thinners etc and the vapors they produce are extremely dangerous DO NOT handle use or store gasoline or other flammabl...

Page 4: ...achieved with the Bath USC 117 or USC2 117 remote control Only qualified service personnel should perform this adjustment Only factory authorized remote control s should be used Notice When this water...

Page 5: ...e or LP gas 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 Before attempting to light the water heater make sure to...

Page 6: ...ntial water heaters of a capacity greater than 52 gallons or tankless style consult the local building jurisdiction code for acceptable bracing procedures Have the installer show you the location of t...

Page 7: ...be installed as close as practical to the vent termination to minimize vent length and the number of elbows required for venting The water heater should be installed with the proper venting materials...

Page 8: ...horized by the gas supplier or fire department Improper installation adjustment alteration service or maintenance can cause property damage personal injury or death Refer to this manual Installation a...

Page 9: ...liance vent adapter and properly vent the water heater to the outdoors as outlined in the Venting section of this manual will result in unsafe operation of the water heater causing death serious injur...

Page 10: ...n hose to the drain fitting and plumb the hose to a sanitary sewer drain See Examples A and B on pages 13 and 14 for DOWNWARD and UPWARD slope for horizontally vented water heaters When a water heater...

Page 11: ...or other appliance 6 inches 15 cm for appliances 10 000 Btuh 3 kW 12 inches 30 cm for appliances 10 000 Btuh 3kW and 100 000 Btuh 30kW 36 inches 91 cm for appliances 100 000 Btuh 30kW 6 inches 15 cm...

Page 12: ...ainst accidental contact with people and pets Indoor Water Heater 12 WARNING Moisture in the flue gas will condense as it leaves the vent terminal In cold weather this condensate can freeze on the ext...

Page 13: ...nd center mark this location If the heater is below the vent exit remove it from the wall and place it in a safe area while the vent opening is made Create a 6 diameter hole to allow the vent to pass...

Page 14: ...rance to Combustibles Firestop Firestop Support Plate Adjustable Roof Flashing Concentric Vent Pipe has 0 Clearance Requirment Storm Collar Support Clamp 1 4 per foot upward slope on horizontal run Ve...

Page 15: ...should be followed Operation of the water heater requires the minimum water pressure of 14 psi 97 kPa and a minimum water flow rate of 0 66 gpm 2 5 lpm A water pressure of 40 psi 276 kPa is required t...

Page 16: ...heck Valve between the water heater and the water shutoff valve if either a thermal expansion tank or a backflow prevention device is not installed The following should be addressed in regards to the...

Page 17: ...be installed in the discharge line Notice Local codes govern the installation of relief valves If local codes require that a temperature and pressure relief valve should be installed the manufacturer...

Page 18: ...d at the bottom of the gas line Do not use excessive force over 31 5 ft lbs 42 7 Nm in tightening the pipe particularly if teflon pipe compound is used as the unit may be damaged The inlet gas pressur...

Page 19: ...Field wiring connections and electrical grounding must comply with local codes or in the absence of local codes with the latest edition of the National Electrical Code ANSI NFPA 70 or in Canada Canadi...

Page 20: ...ote control over the base plate Ensure the projections in the base plate fit into the housings in the remote control Fix the control to the base plate at the bottom of the remote control using the scr...

Page 21: ...T JAUNE G Y GREEN YELLOW AC 120V O ORANGE ORANGE CODE DE COULEUR COLOR CODE MIN BUTTON BOUTON MIN G YorG W BOUTON MAX BL BL BL LED G G MAX BUTTON ADJUSTER BUTTON BL BOUTON DE R GLAGE BL 1 2 3 4 5 A FO...

Page 22: ...Line Shut off V alve Union Cap Condensate Drain Line to Suitable Drain NOTICE The National Fuel Gas Code NFGC and B149 mandates a manual gas shut off valve See NFGC B149 for complete instructions Loca...

Page 23: ...storage tank heaters This water heater does not store water making an insulation blanket unnecessary The manufacturer s warranty does not cover any damage or defect caused by installation attachment...

Page 24: ...rating plate Gas supply pressure is sufficient for the water heater Gas line equipped with shut off valve union and sediment trap Approved pipe joint compound used Soap and water solution used to che...

Page 25: ...s label 2 Turn off all electric power to the appliance 3 Do not attempt to light the burner by hand 4 Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the OFF position 5 Wait...

Page 26: ...s to the water heater If there is any difficulty in understanding or following the Operating Instructions or the Care and Cleaning section it is recommended that a qualified person or serviceman perfo...

Page 27: ...member that hotter water increases the risk of scald injury Always supervise young children or others who are incapacitated The water heater is equipped with a device that will shut off the gas supply...

Page 28: ...the hot water heater discharges periodically this may be due to a problem in the water system Contact the water supplier or your plumbing contractor on how to correct this DO NOT plug the relief valve...

Page 29: ...the left for location of sight glass If any unusual burner operation is noted the water heater should be shut off until qualified service assistance can be obtained CAUTION For your safety burner ins...

Page 30: ...s can occur from down draft of venting system or from installation in areas exposed to cold air The water heater is equipped with a Freeze Protection Electric Heater As long as electricity is supplied...

Page 31: ...Valve Malfunctions if applicable Check and replace if necessary Error code displayed on remote control See instructions for Error Code and if required contact a dealer for service Not enough water de...

Page 32: ...r safety devices Refer repairs to qualified service personnel CAUTION Make certain power to water heater is OFF before removing protective cover FOR ANY REASON CAUTION Label all wires prior to disconn...

Page 33: ...ical wiring gas piping burners vent connectors or other safety devices Refer repairs to qualified service personnel WARNING For your safety DO NOT attempt to disassemble this unit for any reason Front...

Page 34: ...38 C or 85 F 29 C Press and hold the Down button on the remote control for more than 5 seconds Number on the display of the remote control will begin to blink While the number is blinking push the Do...

Page 35: ...ay not function properly NOTICE If the water heater is installed less than 3 280 feet 1 000m no action is required How to adjust the DIP switch on the PCB for high altitude installation Check the alti...

Page 36: ...ttic the hard wired carbon monoxide detector with alarm and battery back up may be installed on the next adjacent floor level b In the event that the requirements of this subdivision can not be met at...

Page 37: ...line without the use of a temperature sensor timer or a continuously operating pump All Applicable Warranty Periods will be limited to one 1 year from the Effective Date if the water heater is instal...

Page 38: ...ter heater or component part s Paloma will not reimburse any party for these or any other fees not specifically covered in this Limited Warranty document HOW TO OBTAIN WARRANTY CLAIM ASSISTANCE Any cl...

Page 39: ...ich the defective part was removed or the date of purchase of the part If it was purchased separately to establish the In warranty status of the defective component part If Paloma determines that the...

Page 40: ...Paloma Industries Inc 2151 Eastman Avenue Oxnard CA 93030 PRINTED IN USA PII 1109...

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