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Sanyo DE User Manual Page 19

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34
35
ENVIRONMENTALLY FRIENDLY TECHNOLOGY SUPER ABSORPTION
Field wiring (DE)
Figure 26. Typical electrical field connection diagram - Direct-fired (DE)
Chilled/hot water
pump interlock
To power source
3 Ph,50/60Hz
400V, 415V, 440V
171
84
E
R0
S0
T0
85
For message signal
(52CH)
138
Cooling water
pump interlock
(52CO)
The unit can be operated by the following five type signal.
(1)Non-voltage normal open contact(A) for start & stop (DC24V 10mA).
:Wiring the terminal 330 and 333.
(2)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal open contact(A) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(3)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal close contact(B) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(4)Continuous signal of DC/AC 24V for start & stop.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
(5)Pulse signal of DC/AC 24V for start.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
Signal of DC/AC 24V for stop.
:Wiring the terminal 331 and 332.(Those terminals are non-polarity.)
Remote signal
330
A
DC/AC 24VDC/AC 24V
Terminal strips in the control panel
(4)(1) (5)
136
135
Ventilation fan
interlock
(52F)
4Y
1
1
2
3
4
10
For emergency stop signal
(Those terminals are
connected by jumper)
Remove the jumper
before using
those terminals
333
332
171 171
330
A
(2)
4Y
1
331
333
332
4Y
2
AB
4Y
2
332
4Y
1
331
333
(3)
A
330
330
332
330
332
331
171
COM
Terminal strips in the control panel
LL
Max. voltage and
Max. current
:AC 250V,0.1A
Stop
indication
Operation
indication
Answer back
indication
52
CT
Chilled/hot
water pump
52
CH
51
CH
51
CT
Cooling tower
fan
52
CO
23
CO
Ventilation
fan
51
CO
52
CO
Cooling water
pump
Note
1.Be sure to insert 23CO at the cooling water inlet side.
2.Be sure to wire the 52CH(interlock) between terminals 171 and 136.
3.Be sure to wire the 52CO(interlock) between terminals 171 and 135.
4.Be sure to wire the 52F(interlock) between terminals 171 and 138.
5.Be sure to wire the chilled/hot water pump control relay between terminals 302 and 303.
6.Be sure to wire the cooling water pump control relay between terminals 304 and 305.
7.Be sure to wire the ventilation fan between terminals 306 and 307.
L
Heating mode
indication
L :Indication lamp
51CH:Chilled/hot water pump overcurrent relay
51CO:Cooling water pump overcurrent relay
51CT :Cooling tower fan overcurrent relay
23CO:Cooling tower fan thermostat
Symbols
Start/Stop sequence of auxiliary equipments
Start
Start signal
Machine operates
Chilled/hot water pump
operates and
ventilation fan operates
Stop air conditioners
Cooling water pump
operates and then
cooling tower fan
operates
Stop
Stop signal
Diluted operation starts
Chiller stops entirely
Cooling water pump
stops and cooling
tower fan stops
Operate air conditioners
52
F
L L
Combustion
indication
Chilled/hot water pump stops
and ventilation fan stops
300
301
302
303
304
305
306
307
308
309
314
315
316
317
320
321
322
323
324
325
326
327
335
334
L
Remote signal
indication
L
Cooling mode
indication
L
Alarm
indication
L
Buzzer signal
indication
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