AOS Bath Water Heater ELJH-30 HDB Replacement

Old storage water heater:
AOS Bath Water Heater EIJH-30 HDB

Founded in 1874 as a metalworking shop by Charles Jeremiah Smith, A. O. Smith evolved into a leader in water heating technology.
After pioneering innovations like the first automated car frame line and glass-lined tanks in the 1930s, the company expanded globally, entering the water heater market.
In 2011, A. O. Smith shifted focus entirely to water technology, acquiring Lochinvar, Aquasana, and others to solidify its position in the industry.

New storage water heater:
Rheem Water Heater EHG-30 HDB

Rheem offers a wide range of water heaters, including electric, gas, hybrid heat pump, and tankless models, designed for energy efficiency and performance.
Their products are used in both residential and commercial applications, with features like glass lining for durability.
Rheem has been a leader in water heating since 1931, expanding globally after its 1925 founding by the Rheem brothers, originally producing steel drums.

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

AOS Bath Water Heater ELJH-30 HDB Replacement Work Scope:

1. Supply of tank, pipe and fittings
2. Removal of old tank
3. Pipe works partial redo to comply with PUB regulations
4. New tank installation
5. Testing and commission. Submission to PUB
6. Clean up before leaving
7. 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:

1. 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;
2. 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:

1. 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.
2. The proposed works shall not adversely affect the existing water supply reticulation system.
3. The 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 in preventing 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 Water Heater EHG-30 HDB 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 authorised.

Condo Name: 745 Pasir Ris Street 71 HDB

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