White-rodgers 1F85-0477 Manual de usuario descargar pdf (Pagina 4)

4

WIRING DIAGRAMS

Figure 5 – Single Stage or Multi-Stage System (No Heat Pump) with Two Transformers

Single

Stage 1

(SS1)

Multi-

Stage 2

(MS2)

No

Output

Cool

Mode

2nd

Stage

Cool Mode

1st Stage

Blower/

Circulator

Fan Energized

on Call for

Cool (and

Heat if

configured

for Electric

Heat)

No Output

Heat Mode

2nd Stage

Heat

Mode

1st Stage

Optional

24 Volt

(Com-

mon)

Fault

Indicator

(NOT

USED)

24 Volt

(Hot)

Cool

System

Y

G

W/E

C

L

RC

CLASS II

TRANSFORMER

HOT

24VAC

NEUTRAL

120VAC

24 Volt

(Hot)

Heat

RH

120VAC

Remove Jumper Wire

between RH & RC

HOT

24VAC

NEUTRAL

CLASS II

TRANSFORMER

HEATING

COOLING

Y2

W2

Jumper

O/B

O

Energized Constantly

in Cool Mode

B

Energized Constantly

in Heat, Off,

Emergency

Mode

Single Stage

3-wire

Zone Valve

application

Blower/Circulator

Fan Energized

Opens

Va lve

(4)

Constant

24 Volt

(Com-

mon)

24 Volt

(Hot)

Cool

System

6

Y

W

C

RC

CLASS II

TRANSFORMER

HOT

24VAC

NEUTRAL

120VAC

24 Volt

(Hot)

Heat

(5)

RH

G

Jumper

Closes

Va lve

(6)

Figure 6 – 3-Wire (SPDT) Heat Only Zone Valve Wiring

1 2 3 4 5 6 7 8 9 10 11 12

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