Honeywell L4064B2228 5" Fan/Limit Control Switch

Controls high limit and fan motors in forced air heating systems. Turns fan on and off according to plenum temperature via helical bimetal sensing element. High limit stop set at 200°F (93°C). Breakaway Jumper included. Includes manual and automatic fan on/off settings. Replaces L4064A, B and E.

• 3 wiring terminal options available for easy installation
• Push-in receptacles for stripped wire
• Female receptacles for 1/4 in. male flag connectors
• Auxiliary screw terminals
• Field adjustable fan and high limit settings
• High limit and fan motor control for all types of forced air heating systems
• Fast-response bimetal element with larger surface area means faster rotation in response to temperature changes
• Faster recognition of temperature changes means safer operation
• Wiring options include push-in connectors, female quick-connects, field add-on screw terminals
• Manual fan switch allows continuous fan operation
• Bimetal heater switch turns fan on approximately 20 to 90 seconds after thermostat calls for heat at a cold start 
• Pilot duty: 2A @ 24VAC; 0.25A @ 0.25 to 12VDC
• Fan ON range: 65°F to 215°F; fan OFF range: 50°F to 200°F
• High limit range: 100°F to 250°F; maximum temperature 350°F
• Dimensions: 4-5/16" H x 3" W x 2" D
• Three wiring terminal options available for easy installation.
• Push-in receptacles for stripped wire.
• Female receptacles for 1/4 inch male flag connectors.
• Auxiliary screw terminals.
• Field adjustable fan and high limit settings.
• L4064B,W, and R models have a manual fan switch that overrides the fan control to keep the fan running continuously.
• TRADELINE models with mounting adapters for easy installation and strain relief bushings to protect wiring from field abuse.

Product Specifications

Application

Forced warm air heating systems

Dimensions (in.)

4 9/32 in. high x 3 in. wide x 1 19/32 in. deep excluding element

Dimensions (mm)

109 mm high x 76 mm wide x 40 mm deep excluding element

Comments

Turns fan on and off according to plenum temperature via helical bimetal sensing element. High limit stop set at 200F (93 C). Breakaway Jumper included. Includes manual and automatic fan on/off settings. Replaces L4064A,B,E.

Mounting

Surface or universal mounting bracket available (50077438-001/U)

Electrical Ratings

Fan- (AFL)-- 14 A @ 120 Vac: 7 A @ 240 Vac; Fan- (ALR)-- 84 A @ 120 Vac: 42 A @ 240 Vac; Limit- (AFL)-- 8 A @ 120 Vac: 4 A @ 240 Vac; Limit- (ALR) 48 A @ 120 Vac: 24 A @ 240 Vac

Approvals, Underwriters Laboratories Inc.

Listed File MP466, Guide MBPR

Approvals, Canadian Standards Association

Certified: File No. LR1622

Tradeline Value

Tradeline

Temperature Ratings (C)

Maximum Ambient-- At switch 88 C: At element: 177 C; High Limit-- 38 C to 121 C; Fan-on-- 18 C to 102 C; Fan-off-- 10 C to 93 C

Temperature Ratings (F)

Maximum Ambient-- At switch: 190 F: At element: 350 F; High Limit-- 100 F to 250 F; Fan-on-- 65 F to 215 F; Fan-off-- 50 F to 200 F; High Limit Stop-- 200 F; Fan-on Stop-- 125 F; Fan-off Stop-- 100 F

Operating Temperature Range (F)

-40 F to +190 F

Operating Temperature Range (C)

-40 C to +88 C

Differential Temperature (F)

High limit 25 F

Differential Temperature (C)

High limit 14 C

Switching Action

Fan switch makes and high limit switch breaks on temperature rise.

Element Insertion Length (in.)

5 in.

Element Insertion Length (mm)

127 mm

Pilot Duty Ratings

0.25 A @ 0.25 to 12 Vdc; 2 A @ 24 Vac