Ranco ETC Installation Instructions Manual Download Page 6

For spac

e

sens

in

g

,

mou

nt

the sensor where i

t

will b

e u

na

f

fect

e

d

by

heaUcool discharge or radiated heat source

s. Spo

t sens

i

ng

r

eq

u

i

re

s

t

he sensor to be in good contact wit

h

the su

r

f

a

c

e b

eing sensed

.

Th

e

se

nsor can be inserted in a bulb well

f

or immers

i

on sensing.

CAUTION:

S

en

s

o

r

'

ti

r

i

g

s

.

cont

r

o

l

.

DO NOT

a

tt

e

mp

' .

b

o

a

r

d!

e

a

d

e ex

t

er

n

a

l

f

ro

m th

e

I

.

CAUTION:

Dis

c

onnect po

wer t

o

c

o

ntr

o

l

befo

r

e

w

i

r

ing to a

v

o

id

POS

S

I

e

electrical sh

o

ck o

r damage to t

h

e con

tr

o

l

l

e

r

.

A

dd

i

t

i

o

nal cable can b

e sp

li

ced to t

h

e sensor cabl

e to

inc

rea

se

t

he

l

e

n

g

th

bey

ond the standard 8 f

e

et

.

It can be

ex

tende

d

u

p to 400

f

eet

.

T

h

e

c

ab

l

e shou

ld be at least 22

A

WG or larger to ke

ep a

ddi

ti

o

n

al

resi

sta

nc

e

a

m

i

ni

mum.

A

ll

sp

l

i

ces

'r

e

l

e

n

g

t

h

s

added to the s

e

ns

or c

a

b

l

e

s

h

oul

d

b

e

m

ade

accord

ing

t

o

a

"

a

b

l

e

wi

r

i

n

g p

r

actices and should conf

o

rm to the

N

ation

a

l

E

l

e

c

t

r

i

C

od

e a

nd l

oc

a

l r

eg

ula

t

ions. Use copper condu

cto

r

s

only

.

Shie

l

de

d c

a

b

l

e

i

s

n

o

t

r

e

q

u

ired

.

1

.

B

efore app

l

ying

p

ow

e

r, make su

r

e installation an

d

wi

r

i

n

g

connections are correct

.

2. Apply power

t

o the

contro

l

and obser

v

e o

n

e or more cycle

s

of

operation.

3. I

f

pe

r

form

a

nc

e

indicat

e

s a p

r

obl

em

, c

he

c

k se

nsor r

e

s

is

tance

t

o

determine if sensor or c

o

ntrol

i

s a

t f

a

ult

.

4.

T

o check sens

o

r r

e

si

sta

n

ce, d

is

c

o

n

n

e

ct sensor and measure the

resis

t

ance across the leads while measuring

t

emp

e

r

a

tur

e a

t

the

sensor

.

Replacement Sensor - Order

Part No

.

1309007-044

Th

e

1

3

09007-044 sensor i

s a

n

ega

t

i

v

e tem

p

e

r

at

ur

e

coefficien

t (NT

C

)

th

er

mis

tor

se

ns

o

r. Th

e sensor res

i

sta

nc

e decreases with tempe

r

ature

.

in

c

re

ase. It

i

s

.

25 x 1

.

94 long w

i

t

h

8 fee

t #

22 AWG cable.

Th

e

t

e

rmistor h

a

s

a

r

e

f

e

r

ence

r

esistan

c

e

o

f 3

0,

0

00 ohms at 77°F (25

O

C)

.

Th

e

schematic drawings and other information i

n

cluded

i

n thes

e

ins

tr

uctions are for the purpose of i

l

lus

t

ration and ge

n

e

r

al r

e

f

er

en

ce

o

nly

. Ra

nco ass

um

es

n

o

r

es

p

o

n

s

i

b

l

i

ty f

o

r

an

y un

co

n

ve

n

t

ional

a

p

Ii

ca

'

.

co

t

r

o

l

,

u

n

l

ess

s

u

c

h

a

pp

l

ic

ation has bee

n

app

roved

.

_.

y

Ranco

.

D

e

g

.

C

.

Deg

.

F.

RES.

Nom.

-

4

0

-40

1,01

0

,000

-

30

-

22

53

1

,000

-

20

-4

2

9

1,2

00

-

1

0

14

166,000

0

32

9

7,

960

1

0

50

5

9,7

0

0

2

0

6

8

37

,

470

25

77

30,000

30

86

24,170

4

0

104

15,980

50

122

10,810

60

1

40

7,4

6

4

70

158

5,200

8

0

1

7

6

3

,

774

9

0

1

9

4

2

,

753

100

212

2,

0

36

11

0

2

3

0

1,

5

31

Figure 10:

Res

i

s

t

ance

vs Tem

p

erature

o

f 1309

0

07·

0

44. Sen

s

or includ

i

ng 8 foot cable.

8

115

U.

S

. Rt

.

42 N

.

• P

lain

C

i

ty

,

Oh 4

30

64

~

Summary of Contents for ETC

Page 1: ...low voltage models available Optional 0 to 10 volt analog output available for remote temperature indication Input No of 0 10 V Code Number Voltage Stages Output ETC 211000 000 120 240 2 No ETC 211100 000 120 240 2 Yes ETC 212000 000 24 2 No ETC 2121 00 000 24 2 Yes 120 or 208 240 VAC 24 VAC optional 50 60 Hz 30 F to 220 F 1 F to 30 F SPOT Thermistor 1 94 in long x 0 25 in diameter with 8 ft cable...

Page 2: ... key again to access the stage 1 cooling or heating mode The LCD will display the current mode either C1 for cooling or H1 for heating Then press either the up t or down key to toggle between the C1 or H1 designation Stage 2 Step 5 Press the SET key again to access the stage 2 setpoint The LCD will display the current setpoint and the S2 annunciator will be blinking on and off to indicate that the...

Page 3: ...shorted or sensing a temperature that is out of range To correct Check to see if the sensed temperature is out of range If not check for probe damage by comp g a own ambient temperature between 30Of e c e probe if necessary rrupted repaired Replace the control e as been entered er to the control for at least five seconds I e CL message still appears replace INSTALLATION INSTRUCTIONS IMPORTANT 1 Al...

Page 4: ...L a or any flat surface using a combination of any two _ e slotted holes located on the back of the control case The s components are not position sensitive but should be mounted so that they can be easily wired and adjusted Avoid excessive conditions of moisture dirt dust and corrosive atmosphere The ETC has provisions for 1 2 inch conduit connections The conduit hub should be secured to the cond...

Page 5: ... and Figure 5 I r ut is desig a is designa e t6lTlj eral lITl addffionalcoru lediOOs when exte e se e I e supplied with the ETC The sensor cable can be extended up to 400 lee amaged sensorcan be replaced by splicing a new Rancosensor onto the sensor leads from the cirCUITboard The sensor is not polarity sensitive L tX 2 ILINE VOLTAGE I Figure 7 Typical Wiring Diagram for 24 VAC Power Input and Lin...

Page 6: ...and observe one or more cycles of operation 3 If performance indicates a problem check sensor resistance to determine if sensor or control is at fault 4 To check sensor resistance disconnect sensor and measure the resistance across the leads while measuring temperature at the sensor Replacement Sensor Order Part No 1309007 044 The 1309007 044 sensor is a negative temperature coefficient NTC thermi...

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