Danfoss RET 24NSB-U, RET 24NSB, RET 24VF-U, RET 24VF, RET 24-U Data sheet
...
Data Sheet
Typical Application
RET 24
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
Ordering Information
Burner
Pump
Zone
Valve
Compressor
Electric Heat
RET Electronic Room Thermostats
Type Code No.
RET 24 087N7014 24 Vac 24 Vac
RET 24-U 087N7015 24 Vac 24 Vac
RET 24VF 087N7016 24 Vac Up to 24 Vac
RET 24VF-U 087N7017 24 Vac Up to 24 Vac
RET 24NSB 087N7018 24 Vac Up to 24 Vac (2)
RET 24NSB-U 087N7019 24 Vac Up to 24 Vac (2)
(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.
Operating
Voltage
Switching
Voltage
Night
Set-Back
Specifications RET 24 RET 24-U
Switching Differential
Temperature Range
Operating Voltage
Switch Type (common linked int.)
Switch Type (dry contacts)
Contact Current Rating
Locking & Limiting Feature
Dimensions (mm) -
<1°C (2.2°F)
5-30°C (40-86°F)
24Vac, 60Hz
SPDT
-
3(1)A
Yes
3
3 /8 "
(86mm) High
1
3 /8 "
(85mm) Wide
11
1
/16"
(40mm) Deep
<2.2°F (1°C)
40-86°F (5-30°C)
24Vac, 60Hz
SPDT
-
3(1)A
Yes
3
3 /8"
(86mm) High
1
3 /8"
(85mm) Wide
11
1
/16"
(40mm) Deep
LED Status
Indicator
Stat Calling (1)
RET 24VF
RET 24NSB
<1°C (2.2°F)
5-30°C (40-86°F)
24Vac, 60Hz
-
SPDT
3(1)A
Yes
3
3 /8"
(86mm) High
1
3 /8"
(85mm) Wide
11
1
/16"
(40mm) Deep
Comment
Dry Contacts
Dry Contacts
Night set-back is
achieved by using
external time control
RET 24VF-U
RET 24NSB-U
<2.2°F (1°C)
40-86°F (5-30°C)
24Vac, 60Hz
-
SPDT
3(1)A
Yes
3
3 /8"
(86mm) High
1
3 /8"
(85mm) Wide
11
1
/16"
(40mm) Deep
VDRBW222 ©Danfoss 03/10
Data Sheet
RET 24
Electronic Room Thermostat
Wiring Diagram
Typical Application
Multiple zones - RET24's NSB controlled by one Timeclock to provide Night Set-Back.
24V,
60Hz
RET 24VF-U, RET 24VF
ELECTRONICS
A
L
N
24V,
60Hz
°F
(°C)
(°C)
3 4
2
B
CHILLER CIRCUIT CONTROL
TIMECLOCK WITH
DRY CONTACTS
N
L
N
L
RET 24-U, RET 24
°F
°F
ELECTRONICS
A
L
24V,
60Hz
N
RET 24NSB-U, RET 24NSB
ELECTRONICS
A
(°C)
B
HEATING CONTROL
B
C
C
°F
3
°F
(°C)°F(°C)
2
NC
(°C)
4
24V,
60Hz
3
4
NO
RET 24NSB-U, RET 24NSB
ELECTRONICS
A
L
N
RET 24NSB-U, RET 24NSB
ELECTRONICS
A
B
B
C
C
C
C
°F
°F
(°C)
(°C)
NO
NC
2
3
4
DRY CONTACTS
°F
°F
(°C)
(°C)
NO
NC
2
3
4
Dimensions
1
/
" (3mm)
8
(78mm)
"
/
13
3
311/32"
(85mm)
* NOTE : RET 24, RET 24VF and RET
24NSB are scaled in centigrade.
Danfoss can accept no responsibility for possible errors in printed materials and reserves the right to alter its products without notice.
All trademarks in this material are property of the respective companies. Danfoss and Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
32
(86mm)
3
1
/
16
"
Baseplate
" (42mm)
" (8mm)
16
/
16
/
5
11
1
DRY CONTACTSDRY CONTACTS
Danfoss
Toronto, ON
Toll Free: 866-676-8062
Tel.: 905-285-2050, Fax: 905-285-2055
www.na.heating.danfoss.com
VDRBW222 ©Danfoss 03/10
Danfoss
Baltimore, MD
Toll Free: 866-375-HVAC (4822)
Tel.: 443-512-0266 Fax: 443-512-0270
www.na.heating.danfoss.com
,
Loading...