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Service Bulletin Index - Johnstone Supply

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POWER SUPPLY<br />

INPUT<br />

FURNACE DEMAND<br />

OUTPUT<br />

BLOWER FAN DEMAND<br />

OUTPUT<br />

POWER SUPPLY INPUT<br />

(COMMON)<br />

SECOND STAGE FURNACE<br />

DEMAND OUTPUT<br />

COMPRESSOR OUTPUT<br />

SECOND STAGE<br />

COMPRESSOR OUTPUT<br />

REVERSING VALVE<br />

OUTPUT<br />

POWER SUPPLY OUT<br />

TO THERMOSTAT<br />

CALL FOR<br />

REVERSING VALVE<br />

CALL FOR<br />

COMPRESSOR<br />

CALL FOR<br />

EMERGENCY HEAT<br />

CALL FOR<br />

BLOWER FAN<br />

CALL FOR<br />

FURNACE HEAT<br />

POWER SUPPLY COMMON<br />

OUT TO THERMOSTAT<br />

CALL FOR 2ND STAGE<br />

FURNACE HEAT<br />

CALL FOR 2ND STAGE<br />

COMPRESSOR<br />

POWER SUPPLY OUT<br />

TO HP CONTROL<br />

HP CALL FOR FURNACE<br />

(DURING DEFROST)<br />

REVERSING<br />

VALVE OUTPUT<br />

COMPRESSOR<br />

CONTACTOR OUTPUT<br />

POWER SUPPLY COMMON<br />

OUT TO HP CONTROL<br />

ODT (OUTDOOR<br />

THERMOSTAT)<br />

2ND STAGE COMPRESSOR<br />

DEMAND OUTPUT<br />

1 2<br />

F<br />

U<br />

R<br />

N<br />

A<br />

C<br />

E<br />

T<br />

H<br />

E<br />

R<br />

M<br />

O<br />

S<br />

T<br />

A<br />

T<br />

H<br />

E<br />

A<br />

T<br />

P<br />

U<br />

M<br />

P<br />

R<br />

W1<br />

G<br />

C<br />

W2<br />

Y<br />

Y2<br />

O<br />

R<br />

O<br />

Y<br />

E<br />

G<br />

W1<br />

C<br />

W2<br />

Y2<br />

R<br />

W2<br />

O<br />

Y<br />

C<br />

OT-NO<br />

OT-NC<br />

OT-C<br />

Y2<br />

BREAK FOR ODT<br />

P1-8<br />

P1-7<br />

P1-4<br />

P1-6<br />

P1-5<br />

P1-2<br />

P1-3<br />

P1-1<br />

P2-2<br />

P2-1<br />

P2-7<br />

P2-8<br />

P2-5<br />

P2-9<br />

P2-3<br />

P2-4<br />

P2-6<br />

P3-9<br />

P3-8<br />

P3-7<br />

P3-2<br />

P3-6<br />

P3-3<br />

P3-1<br />

P3-4<br />

P3-5<br />

24VAC<br />

24VAC<br />

C<br />

C<br />

AFE18-60A Wiring Schematic<br />

F1 3A<br />

24VAC<br />

C<br />

Page 2 of 2<br />

POWER<br />

SUPPLY<br />

1.0K<br />

6.8K<br />

6.8K<br />

+5VDC<br />

E/W1<br />

O<br />

Y<br />

+VDC<br />

+5VDC<br />

+VDC<br />

Q1<br />

K1<br />

K2<br />

MICROPROCESSOR<br />

24VAC<br />

+VDC<br />

Q2<br />

K4<br />

K3<br />

W1-FURN<br />

W2-HP<br />

G-STAT<br />

G-FURN<br />

S-206<br />

Y2-HP<br />

Y2-STAT<br />

Y2-FURN<br />

Y-STAT<br />

Y-FURN<br />

Y-HP

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