Danfoss RET 24NSB-U, RET 24NSB, RET 24VF-U, RET 24VF, RET 24-U Data sheet
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Data Sheet |
RET 24 |
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Electronic Room Thermostat |
The RET 24 range of electronic thermostats offer improved performance over standard mechanical thermostats. Additionally, they include status indicator lights for ease of use and system troubleshooting. Since all RET’s are fully electronic, anticipator adjustments and thermostat leveling are not required.
Standard Features:
- Electronic anticipator - LED status indicator
- Dry contacts on RET24VF and NSB models can be used to switch 12V DC circuits
Additional Features (RET24NSB and RET NSB-U only) :- Allows night setback via external time clock
Typical Application
Burner |
Pump |
Zone |
Compressor |
Electric Heat |
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Valve |
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Ordering Information
RET Electronic Room Thermostats |
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Operating |
Switching |
Night |
LED Status |
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Type |
Code No. |
Indicator |
Comment |
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Voltage |
Voltage |
Set-Back |
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Stat Calling (1) |
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RET 24 |
087N7014 |
24 Vac |
24 Vac |
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RET 24-U |
087N7015 |
24 Vac |
24 Vac |
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RET 24VF |
087N7016 |
24 Vac |
Up to 24 Vac |
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Dry Contacts |
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RET 24VF-U |
087N7017 |
24 Vac |
Up to 24 Vac |
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Dry Contacts |
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RET 24NSB |
087N7018 |
24 Vac |
Up to 24 Vac |
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(2) |
Night set-back is |
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RET 24NSB-U |
087N7019 |
24 Vac |
Up to 24 Vac |
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(2) |
achieved by using |
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external time control |
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(1) "Calling" indicator is lit when thermostat relay is closed and calling for heat (right hand LED). 2) In RET 24NSB models, left hand LED is lit during Night Set-Back Periods.
Specifications |
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RET 24 |
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RET 24-U |
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RET 24VF |
RET 24VF-U |
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RET 24NSB |
RET 24NSB-U |
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Switching Differential |
<1°C (2.2°F) |
<2.2°F (1°C) |
<1°C (2.2°F) |
<2.2°F (1°C) |
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Temperature Range |
5-30°C (40-86°F) |
40-86°F (5-30°C) |
5-30°C (40-86°F) |
40-86°F (5-30°C) |
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Operating Voltage |
24Vac, 60Hz |
24Vac, 60Hz |
24Vac, 60Hz |
24Vac, 60Hz |
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Switch Type (common linked int.) |
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SPDT |
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SPDT |
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- |
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- |
Switch Type (dry contacts) |
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- |
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- |
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SPDT |
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SPDT |
Contact Current Rating |
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3(1)A |
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3(1)A |
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3(1)A |
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3(1)A |
Locking & Limiting Feature |
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Yes |
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Yes |
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Yes |
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Yes |
Dimensions (mm) - |
33/8" |
(86mm) High |
33/8" |
(86mm) High |
33/8" |
(86mm) High |
33/8" |
(86mm) High |
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31/8" |
(85mm) Wide |
31/8" |
(85mm) Wide |
31/8" |
(85mm) Wide |
31/8" |
(85mm) Wide |
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111/16" (40mm) Deep |
111/16" (40mm) Deep |
111/16" (40mm) Deep |
111/16" (40mm) Deep |
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VDRBW222 ©Danfoss 03/10
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