Tjernlund Products PS1505 Prover Switch
The Tjernlund Products PS1505 Prover Switch is a critical safety interlock designed specifically for Tjernlund Auto-Draft inducers. As a veteran-grade fan proving safety switch, it monitors vacuum pressure within the fan housing to verify that the inducer is operating at peak performance before allowing the burner circuit to fire. This SPST air pressure switch features a non-adjustable set point of 0.05" ± 0.02" W.C. (increasing vacuum), ensuring precise response times and preventing combustion in the event of motor or wheel failure. The unit is housed in a durable zinc-plated steel enclosure to withstand harsh boiler room environments and is rated for 15A non-inductive loads up to 277 VAC.
For proper field installation, the PS1505 must be mounted with the diaphragm in a vertical position to maintain calibration. It is compatible with 24V, 115V, and 277V burner circuits but is not suitable for millivolt gas valves. Use this high-performance prover switch to satisfy national mechanical codes and maintain system integrity in residential and light commercial HVAC applications.
Key Benefits- Ensures safety by deactivating burners instantly if the inducer fan fails or housing pressure drops.
- Rugged zinc-plated steel construction provides long-term reliability in industrial and commercial HVAC settings.
- Fixed set point (0.03" to 0.07" W.C.) eliminates field calibration errors and ensures consistent fan proving.
- Versatile electrical ratings (125 VA to 300 VA pilot duty) allow for broad compatibility across draft inducer models.
- Included mounting hardware simplifies vertical installation for field technicians.
Is the PS1505 compatible with millivolt systems?
No, this switch is designed for 24V to 277V circuits and is not compatible with millivolt gas valves.
What happens if the diaphragm is not mounted vertically?
The set point is factory-calibrated for vertical mounting; installing it horizontally will shift the pressure threshold and may cause the system to fail "proof" or cycle incorrectly.
Can I use this switch with non-Tjernlund inducers?
The PS1505 is specifically engineered for Tjernlund Auto-Draft series equipment; using it on other brands may lead to compatibility issues with 1/4" compression fittings or pressure ranges.
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.
Tjernlund Products PS1505 Prover Switch
The Tjernlund Products PS1505 Prover Switch is a critical safety interlock designed specifically for Tjernlund Auto-Draft inducers. As a veteran-grade fan proving safety switch, it monitors vacuum pressure within the fan housing to verify that the inducer is operating at peak performance before allowing the burner circuit to fire. This SPST air pressure switch features a non-adjustable set point of 0.05" ± 0.02" W.C. (increasing vacuum), ensuring precise response times and preventing combustion in the event of motor or wheel failure. The unit is housed in a durable zinc-plated steel enclosure to withstand harsh boiler room environments and is rated for 15A non-inductive loads up to 277 VAC.
For proper field installation, the PS1505 must be mounted with the diaphragm in a vertical position to maintain calibration. It is compatible with 24V, 115V, and 277V burner circuits but is not suitable for millivolt gas valves. Use this high-performance prover switch to satisfy national mechanical codes and maintain system integrity in residential and light commercial HVAC applications.
Key Benefits- Ensures safety by deactivating burners instantly if the inducer fan fails or housing pressure drops.
- Rugged zinc-plated steel construction provides long-term reliability in industrial and commercial HVAC settings.
- Fixed set point (0.03" to 0.07" W.C.) eliminates field calibration errors and ensures consistent fan proving.
- Versatile electrical ratings (125 VA to 300 VA pilot duty) allow for broad compatibility across draft inducer models.
- Included mounting hardware simplifies vertical installation for field technicians.
Is the PS1505 compatible with millivolt systems?
No, this switch is designed for 24V to 277V circuits and is not compatible with millivolt gas valves.
What happens if the diaphragm is not mounted vertically?
The set point is factory-calibrated for vertical mounting; installing it horizontally will shift the pressure threshold and may cause the system to fail "proof" or cycle incorrectly.
Can I use this switch with non-Tjernlund inducers?
The PS1505 is specifically engineered for Tjernlund Auto-Draft series equipment; using it on other brands may lead to compatibility issues with 1/4" compression fittings or pressure ranges.
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
The Tjernlund Products PS1505 Prover Switch is a critical safety interlock designed specifically for Tjernlund Auto-Draft inducers. As a veteran-grade fan proving safety switch, it monitors vacuum pressure within the fan housing to verify that the inducer is operating at peak performance before allowing the burner circuit to fire. This SPST air pressure switch features a non-adjustable set point of 0.05" ± 0.02" W.C. (increasing vacuum), ensuring precise response times and preventing combustion in the event of motor or wheel failure. The unit is housed in a durable zinc-plated steel enclosure to withstand harsh boiler room environments and is rated for 15A non-inductive loads up to 277 VAC.
For proper field installation, the PS1505 must be mounted with the diaphragm in a vertical position to maintain calibration. It is compatible with 24V, 115V, and 277V burner circuits but is not suitable for millivolt gas valves. Use this high-performance prover switch to satisfy national mechanical codes and maintain system integrity in residential and light commercial HVAC applications.
Key Benefits- Ensures safety by deactivating burners instantly if the inducer fan fails or housing pressure drops.
- Rugged zinc-plated steel construction provides long-term reliability in industrial and commercial HVAC settings.
- Fixed set point (0.03" to 0.07" W.C.) eliminates field calibration errors and ensures consistent fan proving.
- Versatile electrical ratings (125 VA to 300 VA pilot duty) allow for broad compatibility across draft inducer models.
- Included mounting hardware simplifies vertical installation for field technicians.
Is the PS1505 compatible with millivolt systems?
No, this switch is designed for 24V to 277V circuits and is not compatible with millivolt gas valves.
What happens if the diaphragm is not mounted vertically?
The set point is factory-calibrated for vertical mounting; installing it horizontally will shift the pressure threshold and may cause the system to fail "proof" or cycle incorrectly.
Can I use this switch with non-Tjernlund inducers?
The PS1505 is specifically engineered for Tjernlund Auto-Draft series equipment; using it on other brands may lead to compatibility issues with 1/4" compression fittings or pressure ranges.
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.
