Waiwela PH-28R Specifications

RTankless Gas Water HeatersPH-28RIFSN; PH-28CIFSN (Indoor) (NAT. Gas)PH-28RIFSP; PH-28CIFSP (Indoor) (L.P. Gas)PH-28ROFN; PH-28COFN (Outdoor) (NAT. Ga

- 10 -OPERATIONAL PRINCIPLEWHEN SUPPLYING HOT WATER1) By opening the Hot Water Top (1), the water fl ows through the Water Flow Sensor (3) to the Heat

- 11 -[Sensing Burner]The sensing burner is a all primary air type ceramic burner that consists of an outer jacket surrounding the flame opening and a

- 12 -If Imperfect Combustion Happens...IgnitionNormal AirFlow RateExtinctionPost- PurgingSensor Stand-By Lead TimeCold: 2 Min.Hot: 30 Sec. - 1 Min.

- 13 -CapacityHot Water Capacity Curve: Residential Models0.5 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 100110120130140Inlet Water Temperat

- 14 -CapacityHot Water Capacity Curve: Commercial ModelsWater Flow Rate (GPM)Water Pressure (psi)4.34.85.35.86.46.97.4Inlet Water Temperature: 70°FIn

- 15 -Wiring DiagramB 8 R GR Y B O W BR AIR INTAKE FILTER SWITCH TRANSFORMER GND BK GND WATER FLOW SENSOR OVER HEAT LIMITER BK:BLACK COLOUR CODE BR:

Operational Flow Chart & Maintenance Information- 16 -

Diagnostic Points- 17 -The voltage showed is the value of operating condition when the water heater operates according to the flow chart.The resistan

- 18 -

MAINTENANCE INFORMATION SHOWN IN LED DISPLAY OF REMOTE CONTROL ABOVE - 19 -

- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. To do so may result in an explos

- 20 -Error CodesCode Fault Remedy05 Imperfect Combustion Alarm Clean air inlet fi lter.Clean combustion air fan.Clean heat exchanger fi ns.Check for ad

- 21 -Code Fault Remedy15 Boiling Safety Device Check for closed water heater inlet valve or restriction in cold water inlet pipe (must be fully open)

- 22 -Code Fault Remedy65 Malfunction of Water Volume Con-trol MotorCheck water fl ow solenoid valve wiring harness for loose or damage terminals.Check

- 23 -Hints For Diagnosis * Always inspect water heater by referring to the previous chapter "Operation System & Diagnostic Points" a

- 24 -B. Error code is displayed when the Power Button on remote control turns on.1. Error Code [82] (Gas Type Control Data Failure) is displayed. Pul

- 25 -C. The Fan Motor does not activate even when the Hot Water Tap is opened. 1. No Error Code. Display maintenance information [1y] with water flow

- 26 -4. Error Code [61] (Fan Failure ) is displayed. Does the Fan operate? *4 NO YES *4 Check that the fa

- 27 -2. Error Code [32] (Heat Exchanger Thermistor Disconnection) is displayed. Display maintenance information [4y]. [4y] indicates the temperature

- 28 -5. Error Code [61] (Fan Failure) is displayed. Refer to the previous C-4 (Error Code [61]). 6. Error Code [21] (Malfunction of Air Intake Filter

- 29 -7. Error Code [72] (Detected False Flame) is displayed. Display maintenance information [0y]. Does the [0y] indicate [01] ~ [07]

SPECIFICATIONS (Approx.)Model PH-28RIFSN (NAT)PH-28RIFSP (L.P.)PH-28CIFSN (NAT)PH-28CIFSP (L.P.)PH-28ROFN (NAT)PH-28ROFP (L.P.)PH-28COFN (NAT)PH-28COF

- 30-F. Does not ignite the Main Burner and indicates Error Code [11] even when the Igniter sparks. (Ignition Failure) Does the Gas I

- 31 -G. Main Burner shuts off after ignition. (In Use Indicator on remote control does not turn on) Error Code [11] is displayed. (Ignition Failu

- 32 -3. Error Code [13] (Oxygen Depletion Safety Device Working) is displayed. (Indoor & Direct Vent Model Only)NO YES Is the

- 33 -5. Error Code [12] (Flame Failure) is displayed.NO YES Is the burner manifold pressure normal?

- 34 -CC Pull out the relay connection of flame rod connectors and then display maintenance information [0y]. M Does t

- 35 - Continue to the next page.When replaced the Burner Control Assembly, adjust as follows.WARNING: Without the adjustment, the water heater may no

- 36 -[Adjustment of "Minimum" Capacity](1) Open the hot water tap gradually until the water heater ignites at the minimum operating water

- 37 - Note: If the [EE] is displayed on the LED of remote control, adjust the above again with caution in the (6). [How To Check Test Point

- 38 -For High Altitude Installation Above 3,280 Feet (1,000 M):WARNING: Improper adjustment, alteration, service or maintenance can cause property da

- 39 - ON1234DIP1ONOFF1234SW1 SW2SW3High AltitudeChip LocationLEDAdjustingButtonDIP SwitchHigh Altitude Chip for PC Board.Rating of gas appliances are

EXTERNAL DIMENSIONS(PH-28RIFS & PH-28CIFS Indoor Model)- 4 -(PH-28ROF & PH-28COF Outdoor Model)POWER SUPPLY CORD HOLECOLD WATER INLET6.34” (16

- 40 -For Sea Level Installation 0 ~ 3,280 Feet (0 ~ 1,000 M):WARNING: Improper adjustment, alteration, service or maintenance can cause property dama

- 41 - ON1234DIP1ONOFF1234SW1SW2SW3Sea LevelChip LocationLEDAdjustingButtonDIP SwitchSea Level Chip for PC Board.Notice: When the water heater is inst

- 42 -Adjustment for Upper Burner Assembly.:WARNING: Without the adjustment, the water heater may not function properly.Continue to the next page.Inst

- 43 - FT ScrewFT ScrewFT ScrewIgniter Assy.Burner Pipe ABurner Pipe BBurnerPipe CFan Assy. (6) Pivot Burner Pipes A, B, C so that they are n

- 44 -

- 45 - Instruction for changing the setting to 140°F (60°C) for Residential Models:WARNING: Improper adjustment, alternation, service or maintenance c

- 46 -Instruction for changing the setting to 180°F (82°C) for Commercial Models:WARNING: Improper adjustment, alternation, service or maintenance can

- 47 - Instruction for changing the setting back to 120°F (49°C):WARNING: Improper adjustment, alternation, service or maintenance can cause property

HOW TO DISASSEMBLE EACH PARTS (1) When performing maintenance and/or servicing the water heater, before disassembling, always turn off the elect

Process Illustration [2] How To Remove Main Burner: [3] How To Remove Proportional Gas Control Valve Assembly (#103): (1) Burner Control Assy. (

EXTERNAL DIMENSIONS(PH-28RDVS & PH-28CDVS Direct Vent Model)- 5 -(Remote Control)COMBUSTIONINDICATORPOWER ON/OFFINDICATORPOWER ON/OFFBUTTONPRIORIT

Process Illustration [4] How To Remove Water Control Assembly (#410): (1) Burner Control Assy. (#723) Removal: Remove burner control assy.

- 51 - Process Illustration [6] How To Remove Transformer Assy. (#724): (1) Burner Control Assembly (#723) Removal: Remove burner control a

Process Illustration [9] How To Remove Heat Exchanger (#415): (1) Burner Control Assy. (#723) Removal: Remove burner control assy. (#723) by

Schematic Disassembly (PH-28RIFS) - 53 -

Schematic Disassembly (PH-28ROF) - 54 -

Schematic Disassembly (PH-28RIFS & PH-28ROF) 734 - 55 -

- 56 - Parts List for PH-28RIFS 411 415 410 No. Name of Parts No. Name of Parts No. Name of Parts 1 Front Cover Assembly 896 3 Back Cover Assembly P

- 57 - Parts List for PH-28ROF 411 415 410 No. Name of Parts No. Name of Parts No. Name of Parts 1 Front Cover Assembly 896 3 Back Cover Assembly Pl

Schematic Disassembly (PH-28CIFS) - 58 -

Schematic Disassembly (PH-28COF) - 59 -

SCHEMATIC CONSTRUCTION- 6 -No. Name of Parts No. Name of Parts No. Name of Parts1 Front Cover 11 Sensing Burner Assembly 21 Water Inlet Connection2 Ba

Schematic Disassembly (PH-28CIFS & PH-28COF) 734 - 60 -

Parts List for PH-28CIFS 411 415 410 No. Name of Parts No. Name of Parts No. Name of Parts 1 Front Cover Assembly 896 3 Back Cover Assembly Plug for

Parts List for PH-28COF 411 415 410 No. Name of Parts No. Name of Parts No. Name of Parts 1 Front Cover Assembly 896 3 Back Cover Assembly Plug for

Schematic Disassembly (PH-28RDVS)- 63 -

Schematic Disassembly (PH-28CDVS)- 64 -

Schematic Disassembly (PH-28RDVS & PH-28CDVS)- 65 -

- 66 - Parts List for PH-28RDVS411 415 410 No. Name of Parts No. Name of Parts No. Name of Parts 1 Front Cover Assembly 896 3 Back Cover Assembly Pl

- 67 - Parts List for PH-28CDVS411 415 410 No. Name of Parts No. Name of Parts No. Name of Parts 1 Front Cover Assembly 896 3 Back Cover Assembly Pl

Paloma Industries, Inc.2151 Eastman AvenueOxnard, CA 93030Phone: (805) 278-5499 or (805) 278-5480Fax: (805) 278-5468Printed in USA2008-09

- 7 -SCHEMATIC CONSTRUCTION(PH-28ROF & PH-28COF Outdoor Model)No. Name of Parts No. Name of Parts No. Name of Parts1 Front Cover 11 Orifi ce Stand

- 8 -SCHEMATIC CONSTRUCTIONNo. Name of Parts No. Name of Parts No. Name of Parts1 Front Cover 11 Orifi ce Stand L Assembly 21 Hot Water Outlet Connecti

- 9 -OPERATIONAL PRINCIPLENo. Name of Parts No. Name of Parts No. Name of Parts1 Hot Water Tap 11 Solenoid Valve 2 21 Exhaust Outlet2 Bypass Solenoid