White 1521 Specifications download pdf (Page 8)

INSTALLATION

Installation

Fig. 1 - Typical Connection of a Single Stage or Multi-Stage System

*Factory installed jumper between RH and RC

SYSTEM R RH RC C W/E

G O/B L

Single

Stage

24 VAC

Power

24 VAC

Power for

Heating

24 VAC

Power

for Cooling

24 VAC

Common

Required

Heat N/A Cool N/A Fan N/A System

Monitor

Multi

Stage

24 VAC

Power

24 VAC

Power

24 VAC

Power

Heat

mode

stage

Heat

mode

stage

Cool

mode

stage

Cool

mode

stage

CLASS II

Transformer

120 VAC

NEUTRAL

24 VAC

HOT

SYSTEM R RH RC C W/E

G O/B L

Heat

Pump

24 VAC

Power

24 VAC

Power for

Heating

24 VAC

Power

for Cooling

24 VAC

Common

Required

Aux /

Stage

Aux /

Stage

Com

pres-

sor

Stage

Com

pres-

sor

Fan Change

over

Valve

System

Monitor

CLASS II

Transformer

120 VAC

NEUTRAL

24 VAC

HOT

Fig. 2 - Typical Connection of Heat Pump System up to 4 Stages

Heat/2 Stages Cool

*Factory installed jumper between RH and RC

Note: Dual fuel systems W/E is fossil fuel 1

stage and W2 is fossil fuel 2

stage.

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 31 32

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White 1521 Specifications Page 8

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