Robertshaw 9555 Bedienungsanleitung

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 1ST and 2ND 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

9555

ELECTRIC

GAS

NeW 2 Heat / 2 Cool

with Auto Changeover

User's Manual

Quick Start

Installation

DELUXE

NON-PROGRAMMABLE

THERMOSTAT

110-975D

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

IMPORTANT SAFETY INFORMATION

WARNING:

•Always turn off power at the main power source by unscrewing fuse

or switching circuit breaker to the off position before installing,

removing, cleaning, or servicing thermostat.

•Read all the information in this manual before installing or program-

ming this thermostat.

•This is a 24 VAC low-voltage thermostat. Do not install on voltages

higher than 30 VAC.

•All wiring must conform to local and national building and electrical

codes and ordinances.

•Do not short (jumper) across terminals on the gas valve or at the

system control to test installation. This will damage the thermostat

and void the warranty.

Step 1: Replacing Existing Thermostat

1. Turn off power to heating and cooling system.

2. Remove cover from old thermostat to expose wires (Figure 1).

3. Disconnect wires one at a time from existing terminals. Use enclosed labels

to mark existing wires. Refer to cross references in Table 1 if existing wiring

does not directly match the labels.

Old Terminal New Label Description

C, X or B C 24 VAC, Transformer Common Side

R, V-VR or VR-R R 24 VAC, Return

W1 or W W1 1st Stage Heating Control

Y, Y1 or M Y1 1st Stage Cooling Control

O or R O Reversing Valve (Cooling Mode)

BBReversing Valve (Heating Mode)

F or G G Fan Control Relay

Y2 Y2 2nd Stage Cooling Control

W2 or W-U W2 2nd Stage Heating Control

NOTE: THIS THERMOSTAT REQUIRES A 24V COMMON WIRE FOR PROPER OPERATION.

Figure 1

Table 1

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•If you have any questions about cross referencing the old terminal to

the new label, reference your equipment installation manual, a

licensed contractor, or call Robertshaw Technical Support at

(800) 445-8299.

4. Remove existing thermostat base from wall.

Recycling Thermostat

If this thermostat is replacing a thermostat that contains mercury

in a sealed tube, do not place your old thermostat in the garbage.

Contact your local waste management authority for instructions

regarding proper disposal of the thermostat. If you have any ques-

tions, call Robertshaw technical support at 1-800-445-8299.

Step 2: Installing Model 9555 Thermostat

NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON

INSIDE WALL, FIVE FEET ABOVE THE FLOOR. DO NOT

INSTALL BEHIND A DOOR, IN A CORNER, NEAR AIR

VENTS, IN DIRECT SUNLIGHT, OR NEAR ANY HEAT OR

STEAM GENERATING FIXTURES. INSTALLATION AT THESE

LOCATIONS WILL AFFECT THERMOSTAT OPERATION.

1. Turn power off to the heating and cooling systems.

2. Place AUTO-HEAT-OFF-COOL in OFF position (Figure 2).

3. Place -ON-AUTO switch into AUTO position (Figure 2).

Figure 2

SETTING OR CHANGING THE SETPOINT TEMPERATURE:

1. Press or button. Display will show SET and the current

temperature setpoint.

2. Press or button to adjust temperature setpoint.

3. After completing the change, the display will return to the current

room temperature after a few seconds.

CHANGING THE TEMPERATURE DIFFERENTIAL,

DEAD BAND, AND RESIDUAL COOL:

The temperature differentials are factory set at 1˚F and 2˚F for

1ST and 2ND stages respectively. The dead band for Auto-

changeover is set at 3˚F. To change settings:

1. Press the and buttons at the same time and hold for 1

second. Display will indicate: DIFFERENTIAL 1ST.

2. Press either the or button to adjust the 1st stage differ-

ential between 0.5˚F – 3˚F (0.5˚C - 1.5˚C).

3. Either wait five seconds or press the button. The display

will indicate: DIFFERENTIAL 2ND.

4. Press either the or button to adjust 2nd stage differen-

tial between 1˚F – 6˚F (1˚C - 3˚C).

5. Either wait five seconds or press the button. The display

will indicate: DEADBAND.

6. Press either the or button to adjust the dead band

between 3˚F – 6˚F (1.5˚C - 3˚C).

7. Either wait five seconds or press the button. The fan

icon and ON will be displayed.

8. Press either the or button to adjust the Residual Cool

fan delay between 0, 30, 60, or 90 seconds.

9. The display will return to the current room temperature after

a few seconds.

Item

9555

120-1523

Maple Chase Company

www.maplechase.com

Tech Service: 1-800-445-8299

M-F 7:30 a.m. - 5:30 p.m. CST

MADE IN MEXICO

110-975D En.qxd 5/13/03 2:43 PM Page 3 (Black plate)

4. Remove the cover using a coin or screwdriver (Figure 3). Set aside.

5. Place thermostat against the wall at desired location. Make sure wires

will feed through opening (Figure 4) on base of thermostat.

6. Mark placement of mounting holes (Figure 4). Set base aside.

7. If mounting on drywall, tap plastic anchors into wall.

NOTE: ENCLOSED PLASTIC ANCHORS DO NOT REQUIRE A

DRILLED HOLE FOR DRYWALL.

8. Drill the marked holes using a 3/16" drill bit if mounting on a sur-

face other than drywall.

9. Align base with plastic anchors and feed wires through opening.

10. Secure base to wall with supplied screws.

NOTE: THE THERMOSTAT WILL MOUNT HORIZONTALLY

ON A SINGLE GANG JUNCTION BOX.

11. Strip end of wires 5/16” if needed.

Figure 3

Mounting Holes

WIRING

OPENING

W1 Y1 B O G W2 Y2

NON HP

Figure 4

110-975D En.qxd 5/13/03 2:43 PM Page 4 (Black plate)

12. Terminal screws are already loose and ready for wire insertion.

Insert wires into terminal strip (Figure 5) matching the label to the

corresponding terminal (see Wiring Diagrams below). Tighten

screws.

13. Make sure wire connections are secure.

14. Push access wire back through opening.

W1 BGW2 Y2

Wiring Diagrams for 9555

Typical 1 heat / 1 cool system

Typical 1 stage heat / 2 stage cool system

Typical 2 stage heat / 1 stage cool system

Typical 2 stage heat / 2 stage cool system

9555 WIRING SAMPLE #1

9555 WIRING SAMPLE #2

9555 WIRING SAMPLE #3

9555 WIRING SAMPLE #4

B O W2 Y2C R W1 Y1 G

Figure 5

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

15. Set the GAS/ELEC switch to either GAS for a gas/oil heating sys-

tem or ELEC for an electric heating system.

16. A temperature limiting jumper has been included in this thermo-

stat. Cutting this jumper (J3) limits the heating setpoint to no

greater than 72°F and the cooling setpoint to no lower than 78°F

(Figure 7).

GAS/ELECTRIC

Switch

W1 Y1 B O G W2 Y2

NON HP

Figure 6

TERMINAL LEGEND - 9555

TERM EQUIPMENT TO CONNECT REQ? TERMINAL FUNCTION

C24VAC common connection Yes For input of 24VAC common

side of transformer

R24VAC hot connection Yes For input of 24VAC hot side

of transformer

Y2 Second stage cooling connection No Energizes on a call for

second stage cooling (aux.)

Y1 First stage compressor connection Yes* Energizes on a call for first

stage of cooling

W1 First stage heat connection Yes* Energizes on a call for first

stage of heating

W2 Second stage heat connection No Energizes on a call for

second stage heating (aux.)

GIndoor fan connection Yes Energizes with W1, W2, Y1

and Y2 terminals or with

FAN option switched to the

ON position

OAccessory** No Energizes when in the in

COOL mode

BAccessory** No Energizes when in the

HEAT or EM modes

*This thermostat can be used as a heat only or cool only thermostat therefore it is not always

necessary to use both W1 and Y1.

** The O and B terminals are accessory terminals that typically are used for zoning applications.

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17. Replace thermostat cover by snapping into place.

18. Turn on power to system. Test thermostat as described in the fol-

lowing section.

Step 3: Testing the Thermostat

WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS

OF GAS VALVE OR SYSTEM CONTROL TO TEST

OPERATION. THIS WILL DAMAGE THE THERMO-

STAT AND VOID YOUR WARRANTY.

CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS

BELOW 50°F (10°C). THIS CAN DAMAGE THE AIR CONDITION-

ING SYSTEM AND CAUSE PERSONAL INJURY.

1. Place the AUTO-HEAT-OFF-COOL switch into

the COOL position.

2. Press the button until the temperature setting

is at least 3 degrees below the room temperature.

The air conditioning system should turn on within

a few seconds.

NOTE: ONCE THE THERMOSTAT TURNS OFF WHEN IN THE COOL MODE, A

BUILT IN 5-MINUTE DELAY PREVENTS THE SYSTEM FROM TURN-

ING ON AGAIN. THIS PROTECTS THE COMPRESSOR. NO ADDI-

TIONAL TIME DELAY RELAY IS REQUIRED. TO OVERRIDE THE 5-

MINUTE DELAY FOR INSTALLATION, PRESS THE RESET BUTTON.

Cut the J3 jumper

to enable

temperature limiting

W1 Y1 B O G W2 Y2

Figure 7

110-975D En.qxd 5/13/03 2:43 PM Page 7 (Black plate)

3. Put the AUTO-HEAT-OFF-COOL switch into

the OFF position. The air conditioning system

should turn off.

4. Put the AUTO-HEAT-OFF-COOL switch into

the HEAT position.

5. Press the button until the temperature

setting is at least 3 degrees above room

temperature. The heating system should

turn on. The fan may not turn on immediately,

depending on the fan delay built into the furnace.

6. Put the AUTO-HEAT-OFF-COOL switch into

the OFF position. The heating system should

turn off. The fan may continue to run for a

short period of time.

7. Put the -ON-AUTO switch into the ON

position. The blower fan should turn on.

8. Put the -ON-AUTO switch into the AUTO

position. The blower fan should turn off.

110-975D En.qxd 5/13/03 2:43 PM Page 8 (Black plate)

Step 4: Customizing the Thermostat

◆Settings

System

Cool: The thermostat controls the cooling.

Off: The heating and cooling systems are off.

Heat: The thermostat controls the heat.

AUTO: The thermostat automatically selects heat or cool depending

on the temperature.

Fan

Auto: Equipment controls the fan.

On: The fan operates continuously.

Temperature

The default setpoint temperature for heating is 70°F (21°C), for

cooling is 78°F (25°C) and for auto is 72°F (22°C). After putting the

system switch in heat, cool, or auto, press either the or 

button to adjust the temperature setting up or down.

The display will return to the current room temperature five seconds after

the last input and the new setpoint will be saved.

◆Temperature Differential and Deadband

The temperature differential is factory set at 1°F (0.5°C) for the 1ST stage

differential and 2°F (1.0°C) for the 2ND stage. This means that whenever

the room temperature changes by one degree Fahrenheit from the

temperature setting, the system will turn on. If the system turns on too

often, increase the temperature differential.

The 2ND stage will turn on when the room temperature changes from the

desired temperature by the sum of the 1ST and 2ND stage differential set-

tings. The 2ND stage will also turn on if the temperature has not increased

(or decreased in the event of cooling) for a period of twenty minutes.

Although programmed at the same time as the temperature differentials,

the deadband is used only during the AUTO mode. In the AUTO mode, the

thermostat will automatically cycle either the heating or cooling system to

maintain optimal comfort. The deadband is the minimum allowable tem-

perature which must occur to switch to the opposite mode. For example, if

the deadband is set at 3°F and the setpoint is set at 70°F, the thermostat

will switch to cooling mode when the temperature reaches 73°F.

NOTE: IF THE TEMPERATURE LIMITING JUMPER J3 IS CUT

(FIGURE 7), THE DEADBAND IS NOT ADJUSTABLE AND IS

AUTOMATICALLY SET TO 6°F (3°C).

Figure 8

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◆Changing Fahrenheit (F) to Celsius (C),

Temperature Differential, Deadband,

and Residual Cool

The temperature differential is factory set at 1°F (0.5°C) for the 1ST stage

differential and 2°F (1.0°C) for the 2ND stage. The deadband for auto

changeover is set at 3°F (1.5°C). To change settings:

1. The thermostat is preset to display the temperature in degrees

Fahrenheit (U.S. models) or degrees Celsius (Canadian models). The

temperature display can be changed. Press and hold both the and

buttons for three seconds. The display will read For C. Release the

buttons. Press either the or button to change the display.

2. After three seconds, the display will switch to the differential

settings. The display will read DIFFERENTIAL 1ST.

3. The temperature differential is factory set at 1°F (0.5°C) for the first

stage. Press either the or button to adjust the 1ST stage

differential between 0.5°F - 3°F.

4. Either wait three seconds or press the button. The display will

indicate: DIFFERENTIAL 2ND.

5. The 2nd stage differential is factory set at 2°F (1.5°C). Press either

the or button to adjust the 2nd stage temperature differential

between 1°F - 6°F (1°C - 3°C).

6. Press the  or button to adjust the 2nd stage timed differential

between 5 to 40 minutes. Either wait 5 seconds or press the

button.

7. Either wait three seconds or press the button. The display will

indicate: AUTOCHANGE DEADBAND.

8. Press either the or button to adjust the deadband between

2°F - 8°F (1.0°C - 4.5°C).

9. Either wait three seconds or press the button. The fan icon and

ON will be displayed.

10. Press either the or button to adjust the residual cool fan delay

between 0, 30, 60, or 90 seconds.

11. The display will return to the original room temperature display after

a few seconds.

◆LED Indicators

The Robertshaw 9555 uses three LED indicators (in addition to icons on

the LCD display) to indicate functionality of the thermostat. When illumi-

nated, the right orange LED indicates that the thermostat is calling for

heat. The left green LED indicates a call for cool. When the middle

amber LED is illuminated, the thermostat is calling for second stage

heating or cooling. If this LED is illuminated too frequently during periods

of moderate temperature, check the differential settings (see

Temperature Differential and Deadband section).

110-975D En.qxd 5/13/03 2:43 PM Page 10 (Black plate)

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