We are sharing our case study of replacement of Gas Bath Water Heater Tokyo Gas model KG-806BFK-FS (SR-S) by Rinnai RBF-B60SN

Details:

• Date: September 20, 2024 (Date format corrected)
• Location: 2-2 Wakagi, Itabashi-ku
• Issue: The KG-806BFK-FS (SR-S) machine did not work. No hot water came out.
• Previous Unit: KG-806BFK-FS (discontinued model)
• Replacement Unit: Rinnai RBF-B60SN

Functions and Specifications of the old machine KG-806BFK-FS (SR-S)

・Water supply connection port: Front and rear type
・LPG・13A・12A
・Reheating and hot water simultaneous use: Yes
・Hot water supply outside the bathroom: Yes
・Stainless steel exterior SUS430
・Hot water gas consumption: 14.5KW
・Reheating gas consumption: 9.90KW

Description:

The existing gas bath water heater KG-806BFK-FS (SR-S) was no longer functioning. Because the unit is discontinued, a replacement with a model offering equivalent functions and specifications was necessary. Finally, a replacement KG-806BFK-FS (SR-S) by a Rinnai RBF-B60SN unit.

BEFORE :

Image of the KG-806BFK-FS (SR-S) unit below

AFTER:

Image of the installed Rinnai RBF-B60SN unit below

Cost Breakdown:

• Unit Cost: ¥84,648
• Transportation: ¥5,000
• Labor: ¥30,000
• Total: ¥119,648

The replacement unit (Rinnai RBF-B60SN) was purchased online through Rakuten

###リンナイ ガスふろがま【RBF-B60SN】BF式 6.5号 一般地〔HC〕 価格：84,658円（税込、送料別) (2025/3/12時点) 楽天で購入

Recommendations:

1.  When selecting a replacement gas water heater, several key factors must be carefully evaluated to ensure compatibility and optimal performance.

Fuel Type Compatibility:

• • • Confirm the fuel type required by the replacement unit. Is it compatible with the existing gas supply (e.g., Toshi Gas or LP Gas)? Mismatched fuel types can lead to serious safety hazards and operational issues.

Capacity Matching:

• • • Verify that the heating capacity of the replacement unit is equivalent to or suitable for the demands of the household. An undersized unit may not provide sufficient hot water, while an oversized unit can lead to energy inefficiency.

Dimensional Constraints:

• • • Carefully measure the installation space to ensure that the replacement unit’s dimensions do not exceed the available area. Consider all three dimensions (height, width, and depth) to avoid installation problems.

Functional Equivalence:

• • • Gas water heaters offer a wide range of features. Thoroughly review the main functions of the replacement unit to confirm they meet your specific needs and preferences. Ensure all necessary functions are present.

Inventory and Delivery Timelines:

• • • Due to global supply chain disruptions, components for gas water heaters may experience shortages. It is essential to confirm the availability of the replacement unit and obtain accurate delivery timelines. Be prepared for potential delays, as orders may be subject to extended lead times (e.g., 2-3 months).

 

2.  Installation Guidance:

• • While replacing this type of unit may be possible for individuals without specialized technical skills, it is crucial to carefully review and strictly adhere to the manufacturer’s installation instructions.
  • If you encounter any uncertainties or have questions during the installation process, we strongly recommend contacting the manufacturer or a qualified professional for assistance.

• • If you prefer professional installation or have any concerns about performing the replacement yourself, Jasmine Court Housing Service offers installation services. Please contact us via Facebook Messenger to schedule a service appointment.

Jasmine Court – Housing Service

Facebook Messenger: https://www.facebook.com/profile.php?id=100070962843961

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