5 Jul 2024

Solar Water Heater Enhancement with Rheem EHG-80 Storage Water Heater at A Landed House at Dunbar Walk, Frankel Estate on 26 Jul 2023

Project location
Dunbar Walk, Frankel Estate
Property type
Landed

Before

The homeowner faced insufficient heat with their existing solar water heater. Seeking a solution, they requested a site assessment from our technician. After a thorough evaluation, we determined that an upgrade was necessary. We proposed enhancing the water system by adding a Rheem EHG-80 storage water heater. This solution would ensure consistent and sufficient hot water supply.

After

The Rheem EHG-80 storage water heater has been newly installed to the existing solar water heater system, with all connecting pipework made of stainless steel. The installation includes a new stop valve, double check valve, drain pipe, electric bonding, and 2.5mm² wire, and a submission has been filed to PUB to ensure safety and compliance with PUB regulations. Additionally, Homeone offers a 1-year warranty on this installation, complementing the manufacturer's warranty, ensuring peace of mind and reliable service.

Table of Contents

Solar Water Heater Enhancement with Rheem EHG-80 Storage Water Heater

Existing solar water heater:

Solar Water Heater (Unknown Brand)

New storage water heater:

Rheem EHG-80 Storage Water Heater

Brothers Richard and Donald Rheem founded Rheem Manufacturing Company in Emeryville, CA, in 1925.
Rheem is the only global manufacturer of heating, cooling, water heating, pool & spa heating, and commercial refrigeration products and the largest water heater maker in North America.
Rheem’s EHG-80 model boasts dimensions of 410mm diameter, 970mm length, preset temperature of 60°C, and heats up to 60°C in approximately 64 minutes.

This heater unit has met the following requirements for a water heater:

Work Scope:

Supply of tank, pipe, and fittings
Pipeworks partial redo to comply with PUB regulations
New tank installation
Testing and commission.
Submission to PUB
Clean up before leaving
PUB approval letter

Regulatory Compliance:

The electric water heater as a whole unit (i.e. parts incorporated in the water heater itself such as heating element, pressure relief valve/temperature relief valve, water tank, etc. shall be tested in accordance with the following:

AS/NZS 4020:2018 Appendix K – Sample extraction procedure for use with water heating system.
An accredited or non-accredited test report for Appendix K is acceptable provided that the test laboratory is accredited by Singapore Accreditation Council (SAC) to AS/NZS 4020:2018 Appendix H on Extraction of Metals, at the point of testing;
The samples extracted in accordance with Appendix K shall then be tested in accordance with AS/NZS 4020:2018 Appendix H – Extraction of metals (for metallic materials in contact with water).
The maximum allowable concentrations of metals listed in Table 2 of AS/NZS 4020:2018 shall not exceed the limits specified by the World Health Organization (WHO) Guidelines for Drinking Water Quality.

Reason for the Replacement: End of service life

Our licensed water service plumber has ensured that work is done in accordance with the conditions stated below:

All water service installations must be in accordance with the Public Utilities (Water Supply) Regulations, Singapore Standards 636 for Water Services, and all other relevant statutory requirements.
The proposed works shall not adversely affect the existing water supply reticulation system.
Proposed water storage heater is installed in accordance with the specifications and requirements of the manufacturer.
The installation of double check valves is safe and effective to prevent backflow and the back siphonage of water from the storage water heater through the heater inlet pipe and will be safe for use.

Conclusion:

In conclusion, the Rheem EHG-80 storage water heater is a high-quality and reliable product that meets all necessary regulatory requirements.
The installation was carried out in compliance with PUB regulations, ensuring the safety and effectiveness of the new water heater.
We are pleased to inform you that we have received the PUB Approval Letter for the installation.
This letter means that PUB has a record of this heater replacement job and it is authorized.