Field Controls 46525600 Air System
For contractors managing tight residential or light commercial mechanical rooms, the Field Controls 46525600 CAS-4JR Combustion Air System is the industry-standard solution to overcome inadequate makeup air in confined spaces. This motorized fan-in-a-can system provides a reliable, mechanical source of exterior air directly to your 24V gas appliance, supporting natural gas or LP-burning furnaces, boilers, and water heaters with a combined firing rate of up to 110,000 BTU/hr. Engineered for seamless integration, the CAS-4JR utilizes a built-in pressure switch to prove airflow before allowing the burner to cycle, ensuring full compliance with NFPA 54 standards for combustion air requirements.
The 46525600 kit includes a 4" galvanized intake air hood and a motorized blower assembly capable of discharging air within 3 feet of the appliance's intake. The unit features a high/low motor speed switch to fine-tune ventilation technology performance based on duct length and firing rate. By drawing fresh air from the outside, it effectively eliminates drafts and allows equipment to operate at peak efficiency throughout the heating cycle. For multi-appliance setups, this unit can be interlocked with the addition of a CK-81 control kit or a CK-20FV for 24V water heaters.
Key Benefits for Technicians:- Proven Mechanical Interlock: High-sensitivity internal air pressure switch ensures the appliance only fires once combustion air flow is established.
- Flexible Installation: Compact design fits into tight mechanical closets and includes two mounting brackets for versatile wall or column placement.
- Broad Compatibility: Works with any 24 VAC control system used in modern gas-fired HVAC equipment.
- Complete Field Kit: Comes with a 6" x 4" pipe reducer, 6" orifice ring, and wire conduit connectors for immediate job site setup.
Can the CAS-4JR be used for multiple units?
Yes, but you must use additional control kits like the CK-81 to safely interlock multiple 24V appliances to a single motorized blower.
What is the maximum duct length supported?
The allowable equivalent feet of duct pipe depend on the BTU input and pipe diameter (4", 5", or 6"). Always refer to the manufacturer's Diagram A to ensure proper sizing for the specific firing rate.
Does this unit work with power-vented appliances?
The CAS-4JR is designed to activate simultaneously with power venters or burners, providing necessary makeup air to prevent negative pressure in the mechanical room.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $410.81
-65%$410.81
$143.78Field Controls 46525600 Air System
For contractors managing tight residential or light commercial mechanical rooms, the Field Controls 46525600 CAS-4JR Combustion Air System is the industry-standard solution to overcome inadequate makeup air in confined spaces. This motorized fan-in-a-can system provides a reliable, mechanical source of exterior air directly to your 24V gas appliance, supporting natural gas or LP-burning furnaces, boilers, and water heaters with a combined firing rate of up to 110,000 BTU/hr. Engineered for seamless integration, the CAS-4JR utilizes a built-in pressure switch to prove airflow before allowing the burner to cycle, ensuring full compliance with NFPA 54 standards for combustion air requirements.
The 46525600 kit includes a 4" galvanized intake air hood and a motorized blower assembly capable of discharging air within 3 feet of the appliance's intake. The unit features a high/low motor speed switch to fine-tune ventilation technology performance based on duct length and firing rate. By drawing fresh air from the outside, it effectively eliminates drafts and allows equipment to operate at peak efficiency throughout the heating cycle. For multi-appliance setups, this unit can be interlocked with the addition of a CK-81 control kit or a CK-20FV for 24V water heaters.
Key Benefits for Technicians:- Proven Mechanical Interlock: High-sensitivity internal air pressure switch ensures the appliance only fires once combustion air flow is established.
- Flexible Installation: Compact design fits into tight mechanical closets and includes two mounting brackets for versatile wall or column placement.
- Broad Compatibility: Works with any 24 VAC control system used in modern gas-fired HVAC equipment.
- Complete Field Kit: Comes with a 6" x 4" pipe reducer, 6" orifice ring, and wire conduit connectors for immediate job site setup.
Can the CAS-4JR be used for multiple units?
Yes, but you must use additional control kits like the CK-81 to safely interlock multiple 24V appliances to a single motorized blower.
What is the maximum duct length supported?
The allowable equivalent feet of duct pipe depend on the BTU input and pipe diameter (4", 5", or 6"). Always refer to the manufacturer's Diagram A to ensure proper sizing for the specific firing rate.
Does this unit work with power-vented appliances?
The CAS-4JR is designed to activate simultaneously with power venters or burners, providing necessary makeup air to prevent negative pressure in the mechanical room.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
For contractors managing tight residential or light commercial mechanical rooms, the Field Controls 46525600 CAS-4JR Combustion Air System is the industry-standard solution to overcome inadequate makeup air in confined spaces. This motorized fan-in-a-can system provides a reliable, mechanical source of exterior air directly to your 24V gas appliance, supporting natural gas or LP-burning furnaces, boilers, and water heaters with a combined firing rate of up to 110,000 BTU/hr. Engineered for seamless integration, the CAS-4JR utilizes a built-in pressure switch to prove airflow before allowing the burner to cycle, ensuring full compliance with NFPA 54 standards for combustion air requirements.
The 46525600 kit includes a 4" galvanized intake air hood and a motorized blower assembly capable of discharging air within 3 feet of the appliance's intake. The unit features a high/low motor speed switch to fine-tune ventilation technology performance based on duct length and firing rate. By drawing fresh air from the outside, it effectively eliminates drafts and allows equipment to operate at peak efficiency throughout the heating cycle. For multi-appliance setups, this unit can be interlocked with the addition of a CK-81 control kit or a CK-20FV for 24V water heaters.
Key Benefits for Technicians:- Proven Mechanical Interlock: High-sensitivity internal air pressure switch ensures the appliance only fires once combustion air flow is established.
- Flexible Installation: Compact design fits into tight mechanical closets and includes two mounting brackets for versatile wall or column placement.
- Broad Compatibility: Works with any 24 VAC control system used in modern gas-fired HVAC equipment.
- Complete Field Kit: Comes with a 6" x 4" pipe reducer, 6" orifice ring, and wire conduit connectors for immediate job site setup.
Can the CAS-4JR be used for multiple units?
Yes, but you must use additional control kits like the CK-81 to safely interlock multiple 24V appliances to a single motorized blower.
What is the maximum duct length supported?
The allowable equivalent feet of duct pipe depend on the BTU input and pipe diameter (4", 5", or 6"). Always refer to the manufacturer's Diagram A to ensure proper sizing for the specific firing rate.
Does this unit work with power-vented appliances?
The CAS-4JR is designed to activate simultaneously with power venters or burners, providing necessary makeup air to prevent negative pressure in the mechanical room.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
