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REZNOR Blocked Flue Switch: Mfr Part # 121275 - Replacement HVACR Controls, Switches & Thermostats
REZNORReplacement HVACR Controls, Switches & Thermostats

REZNOR Blocked Flue Switch: Mfr Part # 121275

REZNOR Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Blocked Flue Switch.

SKU 3G-OTH-99136

Brand
REZNOR
Item
Blocked Flue Switch: Mfr Part # 121275
Category
Replacement HVACR Controls, Switches & Thermostats
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

REZNOR
Manufacturer Part Number
121275
Product Type
Blocked Flue Switch

Technical Documents

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REZNOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

REZNOR Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Blocked Flue Switch.

Frequently Asked Questions

What is a REZNOR blocked flue switch used for?

A REZNOR blocked flue switch is a safety device that shuts down the heater if the flue becomes obstructed, preventing carbon monoxide buildup. It is used in commercial and industrial gas-fired heating systems to protect personnel and equipment from hazardous exhaust conditions.

What are the specifications of the REZNOR blocked flue switch 121275?

The REZNOR blocked flue switch, manufacturer part number 121275, is a replacement HVACR control designed for use in REZNOR heating equipment. It functions as a safety interlock that monitors flue pressure and interrupts burner operation when a blockage is detected.

Where to buy a REZNOR blocked flue switch 121275 worldwide?

3G Electric supplies the REZNOR blocked flue switch 121275 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this genuine REZNOR replacement part globally.

How to install a REZNOR blocked flue switch?

Install the REZNOR blocked flue switch in the flue gas stream per the heater's wiring diagram. Mount it securely, connect the pressure sensing tube, and verify electrical continuity. Always follow the manufacturer's instructions and local codes. Test operation after installation to ensure proper safety shutdown.

Used in

Common applications for REZNOR
Industrial warehouse heating — REZNOR Venter Wheel (97724) used in gas-fired unit heaters for exhaust.
Commercial rooftop HVAC maintenance — REZNOR Ventor Motor (132377) replacing failed combustion air motors.
Multi-stage heating system repair — REZNOR Electric Sequencer (209164) controlling staged burner activation.
Gas heater ignition service — REZNOR Pilot Assembly (96360) for pilot flame generation in unit heaters.
Condenser fan replacement in refrigeration — REZNOR Condenser Fan Blade (208976) for air-cooled condensers.
Gas valve replacement in heating systems — REZNOR Gas Valve (147830) regulating fuel supply to burners.

REZNOR Products

3G Electric supplies REZNOR replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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