20 May 2024

Ferroli GS 20 OE BIP TG (I) Gas Heater Replacement With MA-20WODP Gas Heater at Westwood Residences EC on 4 Apr 2024

  • Project location

    Westwood Residences EC

  • Property type


Ferroli GS 20 OE BIP TG (I) gas heater replacement at Westwood Residences EC - 4 Apr 2024


Replaced Ferroli GS 20 OE BIP TG (I) Gas Heater at end of service life.


Macro MA-20WODP Gas Heater and corroded sections of cold water PPR piping with Stainless steel piping. Utilised single-use fittings during the replacement to ensure optimal joint integrity. Reconnecting old fittings again risks erosion, particularly in high-speed water systems, and raises the chance of corrosion in water and gas piping. This increases the risk of water or gas leaks. Replaced the faulty cold water sensor as part of overall maintenance to ensure optimal functionality.

The final result

Ferroli GS 20 OE BIP TG (I) Gas Heater Replacement

Old gas heater: Ferroli GS 20 OE BIP TG (I)

The Ferroli GS 20 OE BIP TG (I) Gas Heater is a product manufactured by Ferroli.
Ferroli is an Italian company known for producing heating and air conditioning systems.
Here are some general details about this gas heater:
1. Type: The Ferroli GS 20 OE BIP TG (I) is a gas-fired instantaneous water heater designed for efficient hot water delivery.
With a capacity to heat 20 liters per minute, it ensures a steady supply of hot water to up to four usage points simultaneously.
The heater features a hydraulic-type pulse ignition system and operates on a forced exhaust mechanism.
Equipped with a built-in pump, it can pre-heat water in a loop, minimizing water wastage in large apartments.
2. Installation: Designed for outdoor installation, the Ferroli GS 20 OE BIP TG (I) boasts a weatherproof body suitable for placement on an AC ledge or any external part of a building.
The digital wired remote control provides easy access to settings and temperature adjustments.
3. Safety: Safety is paramount with the Ferroli GS 20 OE BIP TG (I) gas heater.
Its hydraulic pulse ignition ensures reliable and controlled ignition, while the forced exhaust system safely expels combustion gases.
The weatherproof body protects it from outdoor elements, ensuring durability and safe operation.
Additionally, the digital wired remote control allows users to manage the heater without direct contact, enhancing user safety.
This design prioritizes both efficiency and security in residential settings.

New gas heater:
Macro MA-20WODP

The Macro MA-20WODP gas heater is a product manufactured by Macro.
Founded in 1988, Macro is now the biggest manufacturer of gas appliances in China and Southeast Asia.
Here’s some information regarding its type, efficiency, and safety:
Type: The Macro MA-20WODP is a gas-fired instantaneous water heater designed to provide 20 liters of hot water per minute. It features a wide range of temperature settings, capable of reaching up to 60°C, making it suitable for diverse household needs. This model is equipped with a built-in pump, enhancing its efficiency by pre-heating water in a hot water pipe loop, and reducing water wastage. Its advanced technology includes mobile app control, offering convenience and ease of operation.


The Macro MA-20WODP is designed for outdoor installation, ideally positioned on the AC ledge at the exterior of the building. It boasts a weatherproof body, ensuring durability and protection against the elements. With dimensions of H 630 x W 435 x D 155 mm, it’s compact and easy to install in various outdoor settings. Its installation caters to larger apartments where hot water usage points are more than 10 meters from the heater, thanks to its built-in pump for efficient water circulation.


Safety is paramount with the Macro MA-20WODP, incorporating 26 distinct safety features. These include hydraulic-type pulse ignition to ensure safe and reliable startup. The unit is engineered to operate securely under various conditions, providing peace of mind for users. Its robust safety mechanisms are designed to prevent overheating, gas leaks, and other potential hazards, ensuring the appliance remains safe for daily use while delivering efficient and reliable hot water.


Licensed Gas Heater Replacement

Gas & Plumbing Work

1. New Gas Heater Supply and Installation.
2. Gas Valve & Stop Valve Replacement
3. Pipe Works Partial Redo to comply with PUB regulations
4. PUB Regulated Fittings Supply
5. New Control Panel Replacement

Electrical Work

6. Electric wire connects to the isolator
7. Protective equipotential bonding

Gas Supply Compliance

8. Testing and commissioning.
9. Issuance of test certificate by Licensed Gas Service Worker in accordance with Gas Supply Regulation.
This is required by law for your safety.

After Sales Service

10. Homeone Engineering Warranty for 1 Year
11. Tank Covered by Manufacturer Warranty for 1 Year

Gas Heater Installation

  1. Gas Heater Supply
  2. Gas Heater Installation Workmanship
  3. Pipe and Fittings Comply with PUB Regulation
  4. Clean up before leaving
  5. Gas Testing Certificate
  6. One-Year Homeone Engineering Warranty

Gas Heater not Working

If your gas heater is not working, there could be a number of possible causes.
One common issue is a lack of gas flow.
This can occur if the gas valve is turned off or if there is a problem with the gas supply.
A faulty thermocouple or ignition system may hinder the heater’s proper ignition.
Check gas supply and line for issues if your heater malfunctions.
Consider seeking professional help if basic checks fail to resolve the issue.
Regular maintenance and cleaning can help prevent gas heater issues and ensure safe, efficient operation.


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