Paloma PH-28CIFSN - User Manual

R
Tankless Gas Water Heaters
PH-28RIFSN; PH-28CIFSN (Indoor) (NAT. Gas)
PH-28RIFSP; PH-28CIFSP (Indoor) (L.P. Gas)
PH-28ROFN; PH-28COFN (Outdoor) (NAT. Gas)
PH-28ROFP; PH-28COFP (Outdoor) (L.P. Gas)
PH-28RDVSN; PH-28CDVSN (Direct Vent) (NAT. Gas)
PH-28RDVSP; PH-28CDVSP (Direct Vent) (L.P. Gas)
(R: Residentail Model; C: Commercial Model)
Engineering Handbook
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Indoor Water Heater
Outdoor Water Heater
Direct Vent Water Heater

Summary

Specifications

Hot Water Flow Rate and Temperature Rise

Operational Principle

Supplying Hot Water Process

Detailed explanation of the water heating process.

Oxygen Depletion Safety Device

Explanation of the sensing burner and its safety function.

Imperfect Combustion Handling

Flowchart for handling imperfect combustion events.

Wiring Diagram

Maintenance and Diagnostics

Operational Flow Chart

Diagram detailing the unit's operational sequence.

Diagnostic Points

Key measurement points and expected values for troubleshooting.

Maintenance Information Access

Troubleshooting and Error Codes

Common Error Codes and Remedies

List of error codes, their faults, and recommended solutions.

Hints for Diagnosis

General guidance for troubleshooting water heater issues.

Specific Troubleshooting Flows

Flowcharts and steps for diagnosing common operational problems.

Adjustment Procedures

Burner Control Assembly Adjustment

Steps for adjusting the PC board settings.

Altitude Connector Setting

High Altitude DIP Switch Adjustment

Sea Level DIP Switch Adjustment

Parts Replacement

Replacing the Upper Burner Assembly

Disassembling Components

Paloma PH-28CIFSN Specifications

General

Type	Tankless
Fuel Type	Natural Gas
Energy Factor	0.82
Voltage	120V
Energy Efficiency	82%
Ignition Type	Electronic Ignition
Minimum BTU Input	19, 000 BTU/h
Flow Rate	0.5 - 10 GPM
Temperature Range	98°F - 140°F
Gas Connection	3/4 inch
Water Connection	3/4 inch
Dimensions	13.8 x 20.3 x 8.5 inches