DT S X T im e I nitia te d, T e m pe ra ture , P re s s ure or T im e Te rm ina te d 4 0 A De fr os t T im e rs
DTSX-IM-120
Defrost Timer Synchronous}Drive: 40A
Blank: Plastic NEMA 3R
IM: Indoor Metal NEMA 1
M: Mechanism Only 
P: Panel Mount w/standoff
B: Bracket Mount
120 VAC }
240 VAC
S P E C I F I C A T I O N S |
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E lectrical R atings : |
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[2] & [4] Contacts |
[1] & [3] Contacts |
[1] & [F] Contacts |
30A Resistive |
40A Resistive |
30A Resistive |
@120~240VAC |
@120~240VAC |
@120~240VAC |
1HP @ 120VAC |
1HP @ 120VAC |
1HP @ 120VAC |
2HP @ 240VAC |
2HP @ 240VAC |
2HP @ 240VAC |
E nvironmental R atings : Ambient Temperature: -40F to 130F Humidity: 0-95% non-condensing
Wiring C onnections :
S crew clamp terminals for #22AWG up to #8AWG wire.
Use #8 AWG wire with 90C rating for 40A loads. Use #10 AWG wire with 90C rating for 30A loads.
E nclos ures :
Plastic NE MA 3R R aintight Indoor/Outdoor Metal NE MA 1 Indoor
L E D Indication: G reen LE D when in refrigeration mode R ed LE D when in defrost mode
A P P L I C A T I O N
The DTS X Defrost Timer is identical in function, terminal identifi- c ation, and wiring to the Paragon 8140 and Prec is ion 6140 series Defrost Timers . The DTS X may also be used to replace Paragon 8040 and Precision 6040 series time terminated defrost timers . With the addition of a remote pressure switch, the DTS X can replace the Paragon 8240 series and Precision 6240 series pressure terminated defrost timers .
Defrosts will be initiated at the times set on the timer, which will accept from 1 to over 24 defrost initiation settings per day at 15 minute intervals (8:00AM, 8:15AM, 8:30AM, etc .) Defrost duration is settable in 15 minute intervals from a minimum of 15 minutes up to several hours (15 minutes, 30 minutes, 45 minutes, 1 hour, 1 hour-15 minutes, etc .) The defrost duration determines the termination time.
In standard configuration, the contacts between terminals 1 and 3 are normally open and c los e during a defros t to energize defrost heaters; the contacts between terminals 2 and 4 are normally c los ed (when timer is energized) and open during a defrost to de-energize refrigeration and fans .
DT S X T ime Initiated, R emote T emperature, P res s ure or T ime T erminated: Is used in electric or hot gas defrost applications where the defrost is terminated when the coil is frost free, as sensed by a temperature or pressure switc h, even though the defrost programmed termination time has not been reached. The time termination functions as a fail-safe and will terminate the defrost if the temperature or pressure switch fails to do so. The temperature or pres s ure s witc h on the refrigeration c oil have contacts which close on a temperature or pressure rise to above the freezing level, indicating that frost and ice have melted from the coil. Typically a wide differential S PDT temperature switc h is used, with it's normally c losed c ontac ts wired to the fans, so that the fans are delayed from turning on after defrost termination, until the c oil temperature has dropped bac k to below freezing. In most applications, the contacts at terminals 2-4 are normally closed (when timer is energized) and control the fans and refrigeration equipment or compressor. For hot gas defrost, or for double pole switching, the 2-4 contacts may be c onfigured as normally open by moving jumper S 1 to the "B " position. R efer to wiring diagrams 1 thru 12.
ÒF Ó T erminal: The DTS X c ontains a normally c los ed c ontac t between terminals 1-F. This terminal may be used for switching the fans off during a defrost rather than the 2-4 terminals . For hot gas defrost applications, with S 1 in the "B " position, the fans may be connected to the "F" terminal.
I N S T A L L A T I O N
Note: For outdoor loc ations, R aintight, or wet loc ation c onduit hubs that comply with requirements of UL 514B (standard for fittings for conduit and outlet boxes) are to be used.
1.R emove 2 screws retaining the interior cover panel and remove panel by prying out with a thin blade (NE MA3R ).
2.S elect knockouts to be used. R emove the inner (1/2") knockout by inserting a screwdriver in the slot and carefully punch knockout loose. R emove slug. If the 3/4" knockout is required, remove the outer ring with pliers after removing the 1/2" knockout. S mooth edges with knife if necessary.
3.Place enclosure in desired mounting location and mark the three mounting holes .
4.Drill holes for #10 screws, start screws in holes .
5.Place enclosure over screws and tighten screws .
6.C onnect conduit hubs to conduit before connecting the hubs to the enclosure. After inserting hubs into enclosure, carefully tighten hub lock nut. Do not over-torque.
7.If us ing NE MA1 Metal E nclos ure connect ground wires
to ground lug on bottom of enclos ure.
(Not applicable for NE MA3R plas tic enclos ure). 8. Wire in accordance with National and Local C odes .
9. R eplace interior cover panel and 2 screws (NE MA3R ).
G rounding: NE MA 3R enclosure is of plastic construction and does not require a ground connection or bonding.
N E M A 3 R e nc lo s u r e do e s no t pr o v ide gr o u nding be t w e e n c o ndu it s . W he n u s ing no n -m e t a llic c o ndu it o r c a ble ,
c o nne c t t he gr o u nd w ir e s o f a ll c a ble s t o ge t he r w it h a w i r e n u t . W h e n m e t a l l i c c o n d u i t i s u s e d , u s e gr o u nding t y pe bu s hings a nd a ju m pe r w ir e be t w e e n e a c h c o ndu it .
C A U T I O N : Do not c he c k c irc uits by Òs pa rk ingÓ w ire s to te rm ina ls . Da m a ge to the de fros t tim e r m a y r e s u lt .
P R O G R A M M I N G (S ynchronous and Quartz E lectromechanical Models )
S etting the T ime:
Turn the minute hand clockwise until the time of day (and AM or PM) on the outer dial is aligned with the triangle marker on the inner dial.
DO N O T R O T A T E M I N U T E H A N D C O U N T E R -C L O C K W I S E S etting Defros t Initiation T ime:
Move a white tab (tripper) on the outer dial outward at each des ired initiation time. For example, to s et defros t initiation times at 6:00AM, 11:30AM, 4:30PM and 11:00PM, move the tab adjacent to the "M" in AM on the dial (6:00AM), the tab that lies between 11:30AM and 11:45 AM, the tab between 4 : 3 0 P M a nd 4 : 4 5 P M, a nd the ta b a d ja c e nt to the 11:00-11:15PM marks . (S ee note for 8243/6243 replacement.)
S etting Maximum Defros t Duration:
Different defrost durations may be set for each defrost initiation setting. Each white tab (tripper) provides a 15 minute interval. The tabs that set the initiation time provide a minimum of 15 minutes of defrost. For longer defrost duration, move additional tabs (following in time) from the initiation tab. For example, if a
45 minute defros t is to s tart at 7:00AM, |
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move the tab outward that lies between |
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7:00 and 7:15 on the AM side of the dial, |
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and the tabs adjac ent to 7:15-7:30 and |
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7:30-7:45. (3 tabs moved outward). The |
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defrost will initiate at 7:00AM and time ter- |
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7 |
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minate at 7:45AM (if temperature termina- |
A |
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tion does not occur first.) |
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M |
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F or elec tronic models , refer to s eparate programming ins tructions .
IMP OR T ANT |
INF OR MAT ION: T he |
Normally C los ed |
contacts |
between terminals 2 |
and |
4 are only clos ed |
when the defros t |
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timer is energized . T he 2-4 contacts |
are the Normally Open contacts |
of |
relay |
K 2. |
(Normal Open relay contacts are more |
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reliable than |
Normally C los ed). |
When |
checking |
continuity |
of the |
control |
with no |
voltage applied, |
the 2-4 contacts will |
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appear as open ; this is normal. T he |
1-3 contacts will |
appear |
as |
open and |
the |
1-F contacts will |
appears as clos ed. We |
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recommend that the control be |
tes ted |
by us ing a |
voltmeter, |
with |
rated |
voltage |
applied. |
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Note: A definite purpose contactor must be used to switch loads greater than the following maximum loads:
Max. Defrost Heater Load: |
120V: 4800Watts |
Max. Fan & C ompressor Load: |
120V: 1HP |
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208/240V: 2HP |
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208V: 8320Watts |
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Max. Fan Load on Terminal "F" |
120V: 1HP |
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240V: 9600Watts |
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208/240V: 2HP |
T Y P I C A L W I R I N G DI A G R A M S
All switch positions are shown in refrigeration cycle operation, and change position upon initiation of a defrost.
DT S X T ime/T ime - E lectric Defrost Wiring Diagram |
DT S X T ime/T ime - E lectric Defrost Wiring Diagram |
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8045 R eplacement |
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8041 R eplacement |
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1 S 1 P osition A with 8045 Label Applied |
2 |
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S 1 P osition A with 8041 Label Applied |
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T IME R |
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T IME R |
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R E LE AS E |
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T IME R |
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R E LE AS E |
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R E LAY |
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T IME R |
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R E LAY |
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1-N |
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X |
LABE L |
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2 |
4 |
X |
LABE L |
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8045 |
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8041 |
L1 |
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T HE R MOS TAT |
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L1 |
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T HE R MOS TAT |
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C OMP R E S S OR |
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FAN |
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C OMP R E S S OR |
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MOT OR |
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LINE |
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OR |
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LINE |
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DE F R OS T |
OR |
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FAN |
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DE F R OS T |
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S OLE NOID VALV E |
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S OLE NOID VALV E |
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OR |
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HE AT E R |
OR |
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HE AT E R |
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C ONTAC TOR C OIL |
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C ONTAC T OR C OIL |
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L2 |
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L2 |
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DT S X T ime/T ime - E lectric Defrost Wiring Diagram 4 8047 R eplacement - Double P ole S witching
S 1 P osition B with 8047 Label Applied
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T IME R |
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R E LE AS E |
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R E LAY |
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T IME R |
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N |
1 |
3 |
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2 |
8047 |
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LABE L |
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L1 |
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LINE |
S OLE NOID |
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VALVE |
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DE F R OS T |
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OR |
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C ONTAC T OR |
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HE AT E R |
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L2 |
NOT E : Move B ridge to 2-2 |
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NOT E : |
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DT S X Time/Temp. - E lectric Defrost Wiring Diagram 7 8141 R eplacement
S 1 P osition A with 8141 Label Applied
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T IME R |
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T IME R |
R E LE AS E |
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R E LAY |
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1 |
3 |
2 |
4 |
X |
L1 |
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T HE R MOS TAT |
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C OMP R E S S OR |
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FAN |
LINE |
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OR |
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S OLE NOID VALV E |
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DE F R OS T |
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OR |
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C ONTAC TOR C OIL |
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HE AT E R |
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L2 |
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8141 LABE L
TE R MINATION THE R MOS TAT W/FAN DE LAY
DT S X Time/Temp. - E lectric Defrost Wiring Diagram 5 8145 R eplacement
S 1 P osition A - No Label R equired
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T IME R |
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T IME R |
R E LE AS E |
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R E LAY |
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F |
3 |
1 |
2 |
4 |
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X |
L1 |
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T HE R MOS TAT |
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FAN |
TE R MINATION |
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C OMP R E S S OR |
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THE R MOS TAT |
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LINE |
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DE F R OS T |
OR |
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MOT OR |
W/FAN DE LAY |
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S OLE NOID VALV E |
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HE AT E R |
OR |
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C ONTAC T OR C OIL |
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L2 |
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DT S X T ime/Temp. - Hot G as Defrost Wiring Diagram 8 8143 R eplacement
S 1 P osition B with 8143 Label Applied
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2 |
L1 |
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LINE |
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HOT |
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C ONNE C T AC R OS S |
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FAN |
G AS |
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VALVE |
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C OMP R E S S OR |
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T HE R MOS TAT |
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L2 |
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T IME R
R E LE AS E
R E LAY
T IME R
X |
8143 |
LABE L |
TE R MINATION
THE R MOS TAT
W/FAN DE LAY
NOT E : R emove B ridge B etween 3-4 *S ee Note 1
DT S X T ime/T ime - Hot G as Defrost Wiring Diagram
8043 R eplacement |
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3 S 1 P osition B with 8043 Label Applied |
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T IME R |
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R E LE AS E |
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R E LAY |
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T IME R |
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F |
3 |
1 |
4 |
2 |
N |
8043 |
LABE L |
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L1 |
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LINE |
HOT |
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C ONNE C T AC R OS S |
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G AS |
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VALVE |
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C OMP R E S S OR |
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T HE R MOS TAT |
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L2 |
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NOT E : R emove B ridge B etween 1-4 |
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DT S X Time/Temp. - E lectric Defrost Wiring Diagram 6 120V F an & Defrost Heater; 240V C ompressor
S 1 P osition A - No Label R equired
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T IME R |
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120V |
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R E LE AS E |
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T IME R |
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R E LAY |
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F |
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1 |
2 |
4 |
N |
X |
L1 |
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T HE R MOS TAT |
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120V |
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DE F R OS T |
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TE R MINATION |
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FAN |
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THE R MOS TAT |
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240V |
HE AT E R |
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W/FAN DE LAY |
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L2 |
N |
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OR |
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C OMP R E S S OR |
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S OLE NOID VALV E |
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OR |
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C ONTAC TOR C OIL |
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DT S X T ime/Temp. - E lectric Defrost Wiring Diagram 9 8143 R eplacement - Double P ole S witching
S 1 P osition B with 8143 Label Applied
T IME R
R E LE AS E
R E LAY
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T IME R |
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1 |
N |
3 |
4 |
2 |
X |
L1 |
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LINE |
S OLE NOID |
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VALVE |
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DE F R OS T |
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OR |
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C ONTAC T OR |
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HE AT E R |
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L2 |
NOT E : R emove B ridge B etween 3-4 |
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NOT E : C onnect B ridge B etween 2-X |
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8143 LABE L
TE R MINATION THE R MOS TAT
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