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Robertshaw 9555 User Manual

User's manual, Quick start installation

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Application

The Robertshaw 9555 is a multi-stage auto changeover thermostat
designed to control 24 VAC gas or electric two-stage heating and two-
stage cooling systems. The 9555 requires the use of a common wire.

Features

• Multi-stage control

• Auto changeover [deadband adjustable from 2°F to 8°F (1.0°C - 4.5°C)]

• Large back lit display

• Adjustable 1

ST

and 2

ND

stage temperature differential

• Compressor short cycle protection

• Adjustable fan delay on cooling

• LED indication of system status

• Zone system compatible as a master thermostat

• Battery-free EEPROM memory retention

• Optional temperature limiting settings

• Fahrenheit/Celsius display option

• Gas/electric operation

• Adjustable from 45°F to 90°F (7°C - 32°C)

• Quick wire terminal block

1

9555

ELECTRIC

E

GAS

G

®

NeW

2 Heat / 2 Cool
with Auto Changeover

User's Manual

Quick Start
Installation

W

A R R A N T Y

2

TW

O YEAR

DELUXE

NON-PROGRAMMABLE

THERMOSTAT

110-975D

110-975D En.qxd 5/13/03 2:43 PM Page 1 (Black plate)