Seisco RA-28 - User Manual

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Summary

General Safety

Installation Guide

General Installation

General unpacking and mounting instructions for the unit.

Property Damage Protection

Guidelines to prevent property damage from leaks, especially in hidden areas.

Plumbing Connections

Instructions for connecting water supply lines, including warnings.

Temperature & Pressure Relief Valves

Drain Pan Requirements

Electrical Installation Guide

Connection to Power Supply

Instructions for connecting the unit to the electrical power supply.

Heater Supply Side Connection

Details on connecting the heater to the circuit breaker panel.

Seisco Mounting Clearances

Start-Up Functional Checks

Pre-Power Check

Verification of electrical connections and grounding before applying power.

Power Check

Operational Checks

Start-Up Diagnostics

Limited Warranty

Exclusions and Limitations

Warranty Claims Procedure

Troubleshooting Guide

Product Specifications

Wiring Diagrams

Two Chamber - Single Circuit

Two Chamber - Dual Circuits

Four Chamber - Dual Circuits

Four Chamber - Four Circuits

Seisco RA-28 Specifications

General

Model	RA-28
Type	Tankless Electric
Power Rating	28 kW
Voltage	240 V
Amperage	117 A
Phase	Single Phase
Activation Rate	0.5 GPM
Temperature Range	80-140°F
Flow Rate	4.5 GPM
Water Connection	3/4" NPT
Warranty	5 years