Field Instruments

General

Honeywell WME series of Digital thermostats are designed for a 3-speed fan and a motorized valve control in fan coil system. The typical application including:

• 2/4-pipe cool only/heat only/manual changeover
• Ventilation mode
• Manual or automatic 3-speed fan control
• Water valve on/off control

Features

• 2/4-pipe cooling/heating manual/automatic changeover
• Manual or automatic 3-speed fan control
• Option for using ntc10k external sensor
• Temperature deviation correction function (offset adjustment)
• Low temperature antifreeze function
• Keypad lock options
• Energy saving mode
• Configurable control algorithm
• Option for sleep mode

Specifications

• Make: Honeywell
• Model: WME428WB/U
• Rated voltage & Frequency: 100~240 VAC±10%, 50/60HZ
• Setpoint range: 5~45OC step 1OC
• Control Accuracy : ± 1OC at 25OC
• Temperature display resolution: 0.1OC
• Display range: 0~50 C
• Build in temp. sensor: NTC 10K
• Working current for the whole product: 5(3)A

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