Intermatic DDFM Manual

Intermatic Skifte DDFM

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Spring Grove, Illinois 60081

www.intermatic.com

ICUBE™ Adaptive Defrost Module

Installation and Operation Manual

SAFETY SECTION

WARNING

Risk of Fire or Electrical Shock

• Disconnect the power at the circuit breaker(s) or disconnect switch(es) before

installing or servicing.

• More than one circuit breaker or disconnect switch may be required to

de-energize the equipment before servicing.

• Installation and/or wiring must be in accordance with the national and local

electrical code requirements.

• Refer to DTAV40 or DDT40 for additional warnings and installation instructions.

See www.intermatic.com if needed.

• Only use the Intermatic supplied thermistor probe kit. The probe connection(s) to

the DTAV40 and DDT40 control are NOT an isolated Class 2 circuit. Use #18-14

AWG copper conductors for the ﬁeld supplied wire to the thermistor probe.

NOTICE

• Rotate the timer dial clockwise only, rotating counter-clockwise will damage the

timer.

• Do not move the clock hands on the timer. Moving the clock hands manually may

damage the timer.

• The thermistor wire may be extended up to 400 ft (122 m) using ﬁeld-supplied

wiring between the DDT40 control and the thermistor probe location.

• This product is only intended to be used with Grässlin™ DTAV40 and DDT40

models.

All trademarks are the property of their respective owners.

PRODUCT DESCRIPTION

The ICUBE™ Adaptive Defrost Module, when added to an existing Grässlin™ DTAV40 - Defrost Control, provides the

DTAV40 Control with the ability to skip scheduled defrost events when they are not needed in order to save energy. Up to

four thermistor probes may be added to the control in order to monitor multiple evaporator coils. Thermistor probes may be

installed up to 400ft (122 m) away from the ICUBE™ module at a remote dedicated or multiplex condensing unit (indoor or

outdoor) or within the freezer/cooler box. No changes to the installed defrost control terminal wiring (such as the wiring for

fans, defrost heater, or thermostat) is required.

To order additional thermistor probe kits (for example, to connect multiple evaporators to one control), use part number

178GR10K-1.

ICUBE™ Adaptive Defrost Module Contents – Part Number DDFM

The kit includes:

• One 10 ft (3.05 m) thermistor probe, with clip

• One 6 ft (1.83 m) input lead

• Four wire connectors

• One dead front

• One ICUBE™ Adaptive Defrost Module, DDFM

• Four #4-40 ¼" screws

FIG. 1 ICUBE™ Module Kit Contents

ICUBE™ Adaptive Defrost Module

Specications

Rated Input:

120/240 VAC, 50 mA, 60 Hz

Thermistor Probe Ratings:

• Thermistor*: Type NTC

• Rating:10 K Ω @ 25° C

• Wire size: 24 AWG

• Working range: -40° F to 152° F (-40° C to 67° C)

• Thermistor probe wire length: 10 ft (3.05 m)

• Connector wire length: 6 ft (1.83 m)

*Thermistor probe connections are not an isolated Class 2

circuit.

*Only use a thermistor probe speciﬁed for use with DDFM

model.

INSTALLATION

Note: Refer to WARNINGS on page 1 before proceeding.

Tools Required

• Small ﬂathead or #4-40 TORX™ head screwdriver

• Needle nose pliers

• Emery cloth or evaporator cleaner

• Wire cutter

• Wire stripper

• Fish tape (possibly needed)

• Insulation tape, hose clamp, or wire ties (possibly

needed)

Pre-Installation

1. Disconnect all power to the control at the circuit breaker

or disconnect switch. More than one circuit breaker or

switch may be required to de-energize the control and

all connected loads.

2. Plan the length of ﬁeld-supplied copper wire needed

to connect the thermistor probe from the evaporator

coil to the input lead. (This wire may be #18-14 AWG

shielded or unshielded up to 400 ft (121.92 m) long).

3. The existing control may be installed in an enclosure (as

shown in FIG. 3, for example) or secured via a bracket

inside the condensing unit control panel (as shown in

FIG. 4, for example). The installation of the ICUBE™

module is the same for both instances.

4. If applicable, open the enclosure door.

5. If applicable, remove and discard the existing dead front

cover. See FIG. 2.

FIG. 2 Existing Dead Front

Install the ICUBE™ Module

1. Remove the FM timer from the control board. SeeFIG. 3 or FIG. 4.

Note: The control board does not need to be removed from the enclosure or the bracket.

FM Timer

Control Board

Screw

FM Timer

Screw

Control Board

Bracket

FIG. 3 Remove the FM Timer (Enclosed Model Shown) FIG. 4 Remove the FM Timer

(Salable item DT-B. See DT-B Installation Instructions.)

Produkt Specifikationer

Mærke:	Intermatic
Kategori:	Skifte
Model:	DDFM

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