Rinnai Enduro XL SP250B User Manual

Issue
1
Operation Installation Manual
Low Profile Roof Mounted
Solar Hot Water Systems
This system shall be installed in accordance with:
• Manufacturer’s Installation Instructions
• Current AS/NZS 3500
• All applicable local rules and regulations including local OH&S requirements
This system must be installed, commissioned and serviced by an Authorised Person.
Not suitable as a pool or spa heater.
The solar hot and solar cold pipes between the solar storage tank
and the solar collector(s) must be copper tube. Fittings used to
join these pipes must use metallic materials to acheive sealing.
Plastic pipe and fittings must not be used as they are not suitable
for the high temperatures and pressures that may occur.
Failure of plastic pipe and/or fittings can lead to the release of high
temperature water and can cause sever flooding and water damage.
IMPORTANT
This system is fully certified in its own right. Given the unique nature of the
installation for this system it is reccomended to discuss any additional site
requirements with the site Building Inspector / Surveyor.
Issue
1
All Rinnai gas products
are A.G.A. certified.
W169
SAI Global
AS/NZS 2712
Lic No.1849
SAI Global

Rinnai Enduro XL SP250B Specifications

General

Category	Tankless
Maximum BTU Input	199, 000 BTU
Minimum BTU Input	15, 000 BTU
Maximum BTU	199000 BTU
Minimum BTU	15000 BTU
Venting	PVC/CPVC

Summary

Rinnai Solar Hot Water System Warnings and Important Information

Safety and Regulatory Guidelines

Essential safety and regulatory guidelines for installation and operation of the system.

Scald Hazard Precautions

Details risks associated with hot water scalding and precautions for children and vulnerable individuals.

System Operation Principle

Safety Device Overview

Describes essential safety devices like PTR valves and their importance in operation.

Pressure and Temperature Relief Valve

Details the function, location, and normal operation of the PTR valve.

Safety Device Discharge Issues

Discusses potential issues with PTR and ECV valves and their causes.

Routine Maintenance and Care

Servicing and Repair Recommendations

Rinnai Solar Hot Water Troubleshooting Guide

Insufficient or No Hot Water

Lists common causes and troubleshooting steps for lack of hot water.

No Water From Hot Tap

Rinnai Solar Hot Water Installation Information

Installation Regulations and OH&S

Outlines mandatory regulations and OH&S requirements for installation.

Suitable Installation Locations

Gas Supply Requirements

Gas Booster Clearance Standards

Piping, Fittings, and Insulation

Frost Protection Mode Settings

Required Valves and Fittings

Collector Fitting Connection Guide

Collector Orientation and Inclination

Guidance on optimal collector orientation and inclination for performance.

Roof Mounting Location Suitability

Roof Area Classification for Wind Loads

Rinnai Solar Hot Water Installation Steps

Attaching Mounting Rail to Cylinder

Initial Installation Procedure

Details the initial steps of the installation procedure, including rail and cylinder mounting.

Component and Pipework Connections

Instructions for connecting various components, pipework, and sensors as shown in the diagram.

System Checks and Preparation

Includes checking PTR valve, setting frost mode, connecting sensors, water supply, and drain lines.

Water and Gas Connections

Flow Adjustment and Pre-Heating Checks

Covers adjusting flow rate and performing pre-solar heating checks.

Final Commissioning and Handover

Includes setting temperature limits, initiating solar heating, and final handover procedures.