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Aquastat+ Controllers are immersion type devices for limiting or regulating the temperature of liquids in boilers, storage tanks, and other applications where temperature control is required.
Features:
- Totally enclosed Micro Switch+ snap-acting switches operate on temperature rise to setpoint.
- Visible control point scale and external adjustment screw permit easy setting.
- Horizontal or vertical insertion of the sensing element.
- Direct or well immersion of the sensing element.
- Models available for strap-on mounting.
- Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications.
- Select models have wells.
Mode of Operation - Upon application power, the load is energized. When the thermostat or other switch opens or there is a loss of power, the load is de-energized and the delay period begins. The compressor will not start again during the delay period. Restart occurs after the delay period has elapsed.
Installation & Operation Notes:
- Disconnect power at all sources and verify that all circuits are de-energized before starting work
- Mount the contactor securely in the control compartment or electrical panel as directed by the equipment manufacturer
- Move line, load, and control wires from the existing contactor to the new contactor, matching wiring diagrams and terminal markings
- After energizing the system, verify that the contactor pulls in and opens cleanly, with proper operation during system start and stop cycles
- Confirm that all terminations are tight and that wiring is supported to prevent strain at the terminals
Maintenance & Troubleshooting:
- Inspect the contactor during routine HVAC maintenance for pitted or burned contacts, coil discoloration, or mechanical binding
- Replace the contactor if the coil fails to energize, if the contacts do not close fully, or if there is evidence of overheating or excessive humming
- If repeated contactor issues occur, verify that load current and control voltage are within specification and that short cycling is not overstressing the contactor
Certifications & Compliance:
- Meets ARI 780/790 Standard
User Reviews & Q&A Summary:
- Common theme is "correct part" for the intended replacement, with users reporting it worked as expected after installation
- Review feedback frequently mentions straightforward installation for a direct replacement
- Value and fulfillment are recurring positives (good deal/price and fast shipping)
Product Highlights
0.25 A @ 0.25 to 12 Vdc, 5.1A @ 240 Vac, 8A @ 120 Vac   
Fixed    
SPST, Contacts Break on Temp Rise    
Horizontal, Vertical    
5-5/8" Â Â Â 
2-1/8" DepthSpecs
| Application: | High Limit Low Limit |
|---|---|
| Bulb Size: | 3/8" x 2-7/8" |
| Capillary Length: | 3" |
| Switch Action: | SPST Contacts Break on Temp Rise |
| Electrical Rating: | 0.25 A @ 0.25 to 12 Vdc 5.1A @ 240 Vac 8A @ 120 Vac |
| Electrical Ratings (ALR): | 48A @ 120 Vac 30.6A @ 240 Vac |
| Max Temp Differential: | 2°F |
| Differential: | Fixed |
| Max Ambient Temp (°F): | 150°F |
| Height: | 5-5/8" |
| Width: | 2" |
| Depth (Inches): | 2-1/8" |
| Well Included: | No |
| Mount: | Horizontal Vertical |
| Temperature Range (F): | 40°F to 180°F |
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