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FOR YOUR SAFETY!

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.

WHAT TO DO IF YOU SMELL GAS

l

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.

— 

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.

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 assistance.

Any questions regarding the operation, maintenance, service or
warranty of this water heater should be directed to the seller from whom
it was purchased, local distributor or Paloma.

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

Recognize this symbol as an indication of Important Safety
Information!

California Proposition 65 Warning: This product contains
chemicals known to the State of California to cause cancer, birth
defects or other reproductive harm.

Installation and Operating Instruction Manual

With Installation Instructions for the Installer

Tankless 

Water Heater

Warning: This water heater is not suitable

for use in manufactured (mobile) homes!

Direct Vent Gas - 199,000 Btu Input

Models: PH-28R DVSN (Natural Gas) (Residential)

PH-28R DVSP (L.P. Gas) (Residential)
PH-28C DVSN (Natural Gas) (Commercial)
PH-28C DVSP (L.P. Gas) (Commercial)

Summary of Contents for PH-28C DVSN

Page 1: ... 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 unders...

Page 2: ...IS MANUAL FOR YOUR RECORDS Write the model and serial numbers here You can find them on a label on the appliance Staple sales slip or cancelled check here Proof of the original purchase date is needed to obtain service under the warranty 2 Your safety and the safety of others are very important There are many important safety messages in this manual and on your appliance Always read and obey all s...

Page 3: ...it is properly vented and has an adequate air supply for proper operation Be sure to inspect the vent terminal vent and the air intake system on the water heater for proper installation at initial start up and at least annually thereafter Proper operation of the water heater requires air for combustion Provisions for combustion air must comply with referenced codes and standards Refer to the Care ...

Page 4: ...rature Notice The factory setting allows operating temperatures between 100 F 38 C and 120 F 49 C Temperatures of up to 140 F 60 C for Residential models and up to 180 F 82 C for Commercial models can be achieved with the MAIN UMC 117 remote control and a dip switch adjustment Only qualified service personnel should perform this adjustment Only factory authorized remote control s should be used No...

Page 5: ...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 l Before attempting to light the water heater make sure to look and smell for gas leaks 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 gas leak be sure to...

Page 6: ...formation in this manual must be followed to minimize the risk of fire or explosion electric shock or to prevent property damage personal injury or loss of life FOR INSTALLATIONS IN THE STATE OF CALIFORNIA California Law requires that water heaters must be braced anchored or strapped to resist falling or horizontal displacement due to earthquake motions For water heaters up to 52 gallon capacity a...

Page 7: ...ally spilled l The water heater should be installed as close as practical to the vent termination to minimize vent length and the number of elbows required for venting l The water heater should be installed with the proper venting materials and termination suitable for Category III venting l A fire stop plate should be installed at every penetration of a floor or ceiling if the vent is not running...

Page 8: ...or fire WHAT TO DO IF YOU SMELL GAS l Do not try to light any appliance l Do not touch any electrical switch do not use any phone in your building l Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions l If you cannot reach your gas supplier call the fire department l Do not return to your home until authorized by the gas supplier or fire department Imp...

Page 9: ...he venting instructions in this manual before completing the installation and putting the water heater into service Additional installation information for The Commonwealth of Massachusetts is located on page 36 DANGER Failure to install the appliance 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...

Page 10: ...ination The vent should have a 1 4 per foot DOWNWARD slope towards the vent terminal as shown above If the air intake pipe or duct is connected to the bottom of the air intake tee a condensate trap must be installed as close as practical to the air intake tee to drain any water which may enter the air intake termination away from the heater See the Figure on the right Vertical Venting In order to ...

Page 11: ...ply inlet to the combustion air inlet to any building 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 for appliances 10 000 Btuh 3 kW 9 inches 23 cm for appliances 10 000 Btuh 3 kW and 50 000 Btuh 15 kW 12 inches 30 cm for appliances 50 000 Btuh 15 ...

Page 12: ...mage to the structure or exterior finish of the building Inside Corner Caulk 6 1 8 m Caulk Zone If soffit vent is too close block off and install new vent at another location Caulk Caulk Rising moisture will collect under eaves 6 4 1 ft sq 30 x 30 cm sheet metal plate on brick or masonry surface recommended 1 8 m 6 1 8 m Caulk zone or to edge of window etc starting within 6 1 8 m RTV silicone caul...

Page 13: ...p ring located in the female end of the 4 7 concentric vent pipe section When fully assembled the outer female end see Figure to left will overlap the male end by approximately 1 25 4 mm Use the self tapping screws provided with the vent kit to connect the two outer pipes See Figure on left Position the faceplate into the prepared hole from the outside Measure the thickness of the wall The 4 7 con...

Page 14: ...male end of the air intake connection of the air intake tee Install the appliance adapter onto the appliance outlet and inlet and clamp as required Now attach other required vent and air intake material between the appliance adapter and the air intake tee Maintain the proper clearance between the vent pipe and combustible or non combustible material as required by the vent manufacturer There is no...

Page 15: ...onnector fitting on the water heater vent collar outlet and air intake Support vertical or horizontal runs every 5 feet 1 5 m If required use silicone sealant at the point the vent connector joins the water heater Standard Vertical Vent Termination Vertical Vent Termination Location The location of the vent terminal depends on the following minimum clearances and considerations see Figure Minimum ...

Page 16: ...qualified plumber in accordance with local codes Use approved plumbing materials only The diameter of the pipe lines should be a minimum of 3 4 To conserve energy and to prevent freezing insulate both cold and hot water supply lines DO NOT cover the drain or pressure relief valve To ensure proper operation of the water heater the following water pressure guidelines should be followed l Operation o...

Page 17: ...ter Be sure to connect the water inlet and the hot water outlet as shown on the water heater If reversed the water heater will not function Installation of unions or flexible copper connections are recommended on the HOT and COLD water lines so that the water heater may disconnect easily for servicing if necessary Install a Check Valve between the water heater and the water shutoff valve See Figur...

Page 18: ...ucer coupling should 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 recommends a type 40XL Watts T P relief valve or an equivalent model be used Notice Manual operation of relief valves should be performed at least once a year Turn off the electri...

Page 19: ...WARNING Install a gas pressure regulator in the gas supply line which does not exceed the maximum supply pressure DO NOT use an industrial type gas regulator High Altitude Gas Supply The supplied Manual Gas Appliance Shutoff Valve must be installed at the gas connection of the water heater at the time of installation see Figure to the left The branch gas supply line to the water heater should be a...

Page 20: ...te control WARNING 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 Canadian Electrical Code CSA C22 1 Part 1 Remote Control Model Number Remote Control Description Temperature Set Point Range Availability Models USC1 117 BATH 1 100 F 120 F 38 C 49 C Opti...

Page 21: ...ds l l Connect the remote control cables to the extension cable from the water heater l l Place the remote control over the base plate Ensure the projections in the base plate fit into the housings in the remote control l l Fix the control to the base plate at the bottom of the remote control using the screw provided l l Proceed to Connecting the remote control to the water heater to complete inst...

Page 22: ...ipment that carry a ground fault interrupter l An ON OFF switch must be provided and installed for the incoming 120VAC power l Wire the water heater exactly as shown below A wiring Figure is also found inside of the cover panel l A green screw is provided in the junction box for grounding connection l Connect the live wire to black leg wire and the neutral wire to the white neutral wire WARNING Sh...

Page 23: ...r figures provided and take precedent over these instructions Water Inlet Water Outlet Drain Pressure Relief Valve Hot Water Service Valve Cold Water Service Valve Alternate Piping Arrangement 90 Elbow Outside Wall Vent Adapter 1 4 Per Foot Downward Pitch towards termination Air Intake Tee Outside Wall Outside Faceplate Inside Faceplate 4 7 Concentric Pipe Air Intake Opening Vent Termination with ...

Page 24: ...Hot and Cold Pipe Insulation Installation Insulation Blankets Insulation blankets available to the general public for external use on gas water heaters are not necessary The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters This water heater does not store water making an insulation blanket unnecessary The manufacturer s warranty does not cov...

Page 25: ...nion and sediment trap q Approved pipe joint compound used q Soap and water solution used to check all connections and fittings for possible gas leak q Gas Company inspected installation if required D Relief Valve q Pressure Relief Valve properly installed and discharge line run to open drain q Discharge line protected from freezing E Venting q Vent pipe material should be category III and meet UL...

Page 26: ...w and all other labels on the water heater as well as the warnings printed in this manual Failure to do so can result in unsafe operation of the water heater resulting in property damage personal injury or death Should you have any problems reading or following the instructions in this manual STOP and get help from a qualified person ...

Page 27: ...ng valves are available for reducing point of use water temperature by mixing hot and cold water in branch water lines Contact a licensed plumber or the local plumbing authority for further information See page 4 for more details The chart below may be used as a guide in determining the proper water temperature for your home Safety Precautions Do turn off manual gas shut off valve if water heater ...

Page 28: ...ter heater Always remember to test the water temperature with your hand before use and remember 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 to the burner if the water heater exceeds normal operating temperatures Refer to the Before You Call For Servi...

Page 29: ...spection maintenance and or cleaning ensure proper operation by turning on a hot water faucet Housekeeping Before performing Housekeeping tasks to this water heater turn the unit off and disconnect the power supply Vacuum around the water heater for dust dirt and lint on a regular basis Clean the water heater and remote control by using a damp soft cloth with a few drops of mild detergent and gent...

Page 30: ...r cleaning a vacuum cleaner can be used on the burner Proper burner pattern Care and cleaning of the water heater Vacation and Extended Shut Down If the water heater is to remain idle for an extended period of time the power and water to the appliance should be turned off The water heater and piping should be drained if they might be subjected to freezing temperatures After a long shut down period...

Page 31: ...upply cord or disconnect breaker at least 10 seconds after step 1 Open all hot water faucets Before proceeding to the next step make sure that COLD water is coming out of all hot water faucets Close the water shut off valve Using a suitable container to catch water remove the water filter from heater Attach a garden hose to the drain valve installed in the hot water outlet line and direct the stre...

Page 32: ... control The temperature may be set too low l Increase the temperature setting Mixing Valve Malfunctions if applicable l Check and replace if necessary Error code displayed on remote controller l See instructions for Error Code and if required contact a dealer for service Not enough water demand l Increase water flow Water inlet filter clogged l Clean water inlet filter Fixture aerator is clogged ...

Page 33: ...epairs 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 disconnection when servicing controls Wiring errors can cause improper and dangerous operation VERIFY PROPER OPERATION AFTER SERVICING Error Code Possible Cause What To Do 11 The Gas Shutoff Valve is not opened completely l Open th...

Page 34: ...ial number of the water heater from the rating plate Specify type of gas natural or LP as marked on the rating plate Part description as noted below and number of parts desired CAUTION For your safety DO NOT attempt repair of electrical wiring gas piping burners vent connectors or other safety devices Refer repairs to qualified service personnel WARNING For your safety DO NOT attempt to disassembl...

Page 35: ...water shutoff valves l Check and ensure safe operation and performance of the water heater See steps below to LIMIT maximum water temperature setting to 120 49 C Follow first four bullets points listed above then continue as listed below l Press the Min button on the left hand side of the PCB for more than 1 second The LED on the PCB starts illuminating continuously At the same time the display of...

Page 36: ...on of installation the owner shall have a period of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day period a battery operated carbon monoxide detector with an alarm shall be installed 2 APPROVED CARBON MONOXIDE DETECTORS Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI UL 20...

Page 37: ...n 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 installed anywhere other than a single family dwelling Commercial Models If the water heater is installed in a commercial application the Applicable Warranty Periods are five 5 years from the Effective Dat...

Page 38: ...ater 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 claim for warranty assistance must be made promptly First determine if your water heater is In Warranty that is within the Applicable Warranty Period You can determine your unit s warranty status by ad...

Page 39: ...emoved 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 water heater or component part returned to Paloma is free of defects in material and manufacture and or that it was damaged by improper installation the warranty claim for the product component part and or labor maybe denied War...

Page 40: ...Imported by Efficient Technology Sales LLC 5350 Joliet Street Unit 2 Denver CO 80239 USA PRINTED IN JAPAN 31 50543 01 WA 07 08 ...

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