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NOMINal COMPONENT DIMENSIONS

Component

Dimensions

DTC-24 panel

Dia./H/L: 7”/4.75”/2.5” (18/12/6 cm)

MP sensor

Dia./H: 5”/4” (13/10 cm)

MP sensor conduit

Dia./H/L: 3”/4”/6” (8/10/15 cm)

MMP sensor
RG sensor

Dia./H: 2”/1” (5/2.5 cm) 

RG external thermistor

16” (40.6 cm) 

RG sensor adhesive pad

2” x 3” (6 x 8 cm)

MP2

 sensor

Dia./H: 5”/4” (13/10 cm)

SMMP sensor
RGS sensor

Dia./H: 2”/1” (5/2.5 cm)

RGS sensor adhesive pad

2” x 3” (6 x 8 cm)

RID switch

H/W: 2.75”/4.5” (7/11)

INPuT POwER REQuIREMENTS 

24 VAC or 24 VDC

Note: 

Input power can be provided from a Power Control 

Panel with G.F.P.E.

PRIMaRY SENSORS
MP SENSOR 

The MP is a slab mounted (flush with the surface) moisture 
and slab temperature sensor. It is selected when the DTC-
24S is being used to control snow melting cables. 

MMP SENSOR 

The MMP is an aerial mounted ambient temperature and 
moisture sensor. It is installed when the DTC-24A is being 
used to control snow melting or roof de-icing cables.

RG SENSOR 

The RG is a gutter mounted ambient temperature and mois-
ture sensor. It is installed when the DTC-24R is being used 
to control snow melting or roof de-icing cables. 

OPTIONal SECONDaRY SENSORS

MP2

 

The 

MP2

 is an optional slab mounted moisture sensor. One 

MP2

 can be used with the DTC-24S for a total of two sen-

sors.

SMMP

The SMMP is an optional aerial mounted moisture sensor. 
Up to three can be used with the DTC-24A for a total of four 
sensors

RGS

The RGS is an optional gutter mounted moisture sensor. Up 
to three can be used with the DTC-24R for a total of four 
sensors.

OPTIONal TRaNSfORMER
DTC-TRaNSfORMER 

120 volts to 24 volt DT wall mount plug-in transformer class 
2, 28.5 watts. It is required with load switching panels that 
do not provide a 24 VAC or 24 VDC power source.

The DTC-Transformer will not be required when the DTC-24 
is installed with the Delta-Therm Power Control Panel with 
G.F.P.E. 

SENSOR wIRE ExTENSION ChaRT

wire Gauge

Maximum Sensor Cable length ft. (m)

16 awG

1000’ (305)

18 awG

600’ (183)

20 awG

400’ (122)

22 awG

250’ (76)

DTC-24 SYSTEM OPTIONS

Part No.

 

Description

RID

Remote Indication And Activation Timer

RGS

Optional Secondary Gutter Mounted Moisture Sensor

MP

Optional Slab Mounted Temperature/Moisture Sensor

MP2

Optional Secondary Slab Mounted Moisture Sensor

MMP

Optional Aerial Mounted Temperature/Moisture Sensor

SMMP

Optional Secondary Aerial Mounted Moisture Sensor

MPR

Sensor Replacement Kit. Contains Materials To Replace One MP

MMPR

Sensor Replacement Kit. Contains Materials To Replace One MMP

MPSwP-50

Plenum Rated And UV Inhibited Six Conductor #22 AWG Sensor 
Extension Wire For RG, RGS, MP, or MMP Sensor

Summary of Contents for DTC-24 Series

Page 1: ...s 3 button key pad with single level menu for simple pro gramming LED digital display actual air or slab temperature moisture status wet or dry sensor wiring alarm if open circuit system status Low voltage wiring Can be used with optional RID remote indicating device 0 24 hours adjustable timer set in increments of one hour with manual timer deactivation Manual temperature adjustment Dry contact f...

Page 2: ...re sensor One MP2 can be used with the DTC 24S for a total of two sen sors SMMP The SMMP is an optional aerial mounted moisture sensor Up to three can be used with the DTC 24A for a total of four sensors RGS The RGS is an optional gutter mounted moisture sensor Up to three can be used with the DTC 24R for a total of four sensors OPTIONal TRaNSfORMER DTC TRaNSfORMER 120 volts to 24 volt DT wall mou...

Page 3: ...or snow melting system activates only when specific atmospheric and surface conditions exist The system automatically deactivates when it is no longer needed helping keep utility costs to a minimum OPTIONAL Remote Indicator and Activation Timer RID The optional RID will allow an operator to remotely activate and monitor the system The RID can be mounted up to 100 Ft 30m from the DTC 24 control pan...

Page 4: ...patible sensors used Temperature accuracy is less below 30 F Sensor wire fail shown on display Check splices and wire for damage Replace sensor DTC 24 does not activate power panel Check wiring Check power panel is operational DTC 24 control contacts are dry to be used as a single pole switch RID control is not shown on display Only shown when DTC 24 control is not controlling the power panel Syst...

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