Dayton No.4PU51 Mechanical Thermostat

Non Programmable, for Gas/Oil heat-only applications, 24VAC, 750 Millivolt, non-Switching, Hardwired, Control Range 50 to 90°F

Height 3 1/4 In, Width 3 1/16 In, Depth 1 1/8 In, Electrical Ratings (Volt): 30 mV, Stages Heat: 1, Color: Shadow White, Programmable Fan: None

Technical Specifications

• Item: Low Voltage T-Stat
• Type: Mechanical Non Programmable
• Terminal Designations: R,W
• Stages Heat: 1
• Fan Switching: None
• Control Range (°F): 50 to 90
• Height (In.): 3 1/4
• Width (In.): 3 1/16
• Depth (In.): 1 1/8
• Color: Shadow White
• Voltage (AC): 24
• Voltage (DC): 250 to 750 mV
• Battery Backup: None
• Key Pad Lockout: None
• Programmable Fan: None
• Low Battery Indicator: None
• Min. Interlock (F): None
• Mounting: Horizontal
• Dual Transformer Compatible: None
• Remote Sensing Capability: None
• Contact Amp Rating @ 24V: 1
• Power Method: Hardwired
• Characteristics: Millivolt Capable
• For Use With: Gas, Oil, (250-750 Millivolt & 30VAC) Heat Only System

24 volt thermostats are used to regulate indoor temperatures, and are mainly integrated into liquid collector space heating options. For these applications they are normally wired in series with either an aquastat or differential controller.