Robertshaw 9520 Bedienungsanleitung

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 of the information in this manual before installing or pro-

gramming this thermostat

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

higher than 30V AC.

•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

2 Heat / 2 Cool

INTEGRATED COMFORT SOLUTIONS

™

DIGITAL

NON-PROGRAMMABLE

THERMOSTAT

9520

User’s Manual

Quick Start

Installation

110-733D

HEAT PUMP

Features

•Multi-stage heating and cooling control

•Zone system compatible as a master thermostat

•Multi-colored LED indicators for system status

•Low battery indicator.

•Fahrenheit/Celsius display option.

•Adjustable from 45°F (4°C) to 90°F (32°C).

•Accuracy within ± 1 degree.

•Adjustable temperature differential: 1-3 degrees F.

•Automatic heating shutdown if temperature exceeds 90°F (32(C).

Step 1: Replacing Existing Thermostat

1. Turn off power to heating and cooling system.

2. Remove cover of 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 refer-

ences in Table 1 if existing wiring does not directly match the labels.

•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 Tech Support (800) 445-8299

4. Remove existing thermostat base from wall.

Figure 1

Table 1

Old Terminal New Label Description

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

Y, Y1 or M Y Stage 1 Cooling/Heating

Circuit

O or R O Reversing Valve

(Cooling Mode)

BBReversing Valve

(Heating Mode)

F or G G Fan Control Relay

Y2 Y2 2nd Stage Cooling

Circuit

W1 or W2 or W-U W2 2nd Stage Heating

Control

L or X L System Monitor LED

EEEmergency Heating

Circuit

C, X or B C 24 VAC Transformer

Common Side

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

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 dis-

posal of the thermostat. If you have any questions, call Robertshaw tech-

nical support at 1-800-445-8299.

Step 2: Installing Model 9520 Thermostat

NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON INSIDE WALL, 4-5 FEET ABOVE THE FLOOR.

DONOT INSTALL BEHIND A DOOR, IN A CORNER, NEAR AIR VENTS, IN DIRECT SUNLIGHT, OR NEAR ANY HEAT

OR STEAM GENERATING FIXTURES. INSTALLATION AT THESE PLACES WILL AFFECTS THERMOSTAT OPERATION.

1. Turn off power to the heating

and cooling systems.

2. Place COOL-OFF-HEAT-EM

in OFF position.

COOL-OFF-HEAT-EM AUTO - ON

AUX

CHECK EMER

COOL-OFF-HEAT-EM

AUTO - ON

3. Place AUTO-ON switch into AUTO position.

4. Remove the cover using a coin or screwdriver

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

wires will feed through opening on base of thermostat.

6. Mark placement of mounting holes. See Figure 3.

Set base aside.

Figure 3

7. Drill the marked holes using a 3/16" drill bit. NOTE: Enclosed

plastic anchors do not require a drilled hole for drywall.

8. Tap plastic anchors into the wall.

9. Align base with plastic anchors and feed wires

through opening.

10. Secure base to wall with supplied screws.

Figure 2

Batteries NOT Required.

Mounting Holes

11. Terminal screws are loosened. Insert wires into terminal strip

(Figure 4) matching the label to the corresponding terminal

(see Wiring Diagrams below). Tighten screws.

Typical heat pump with cool active reversing valve and auxiliary/emergency heat.

9520 WIRING SAMPLE #1

Y1 E G W2CLRY2

Typical heat pump with heat active reversing valve and auxiliary/emergency heat.

9520 WIRING SAMPLE #2

CLRY2Y1EGW2OB

Typical heat pump with heat active reversing valve and auxiliary/emergency heat.

Does not have separate wire for emergency heat (jump W2 & E).

9520 WIRING SAMPLE #3

BY1 E G W2CL ORY2

Jumper

Typical heat pump with cool active reversing valve, auxiliary/emergency heat

and second stage of cooling. System fault indicator connected (L terminal).

EG OB

9520 WIRING SAMPLE #4

CW2LRY2Y1

FIGURE 4

TERMINAL LEGEND - 9520

TERM EQUIPMENT TO CONNECT REQ? TERMINAL FUNCTION

C24VAC common connection Yes For input of 24VAC common

side of transformer

LSystem fault indicator connection No For connection of system

fault indicator (if present)

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

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

stage heating or cooling

EEmergency heat connection No* Energizes on a call for heat

in the EM mode only

GIndoor fan connection Yes Energizes with E, Y1, Y2 and

W2 terminals or with FAN

option switched to the ON

position

W2 Second stage heat connection No* Energizes on a call for

second stage of heat

(auxiliary heat)

OCool active reversing Yes** Energizes when in the in

valve connection COOL mode

BHeat active reversing Yes** Energizes when in the

valve connection HEAT or EM modes

*For systems using a backup heat source. If separate E terminal connection is not available,

jumper E and W2.

** Most heat pump systems will have a cool active OR a heat active reversing valve. Use the

appropriate terminal.

12. Put the °F/°C switch to either °F for Fahrenheit display

or °C for Celsius display (see Figure 5).

Figure 5

13. Replace cover on thermostat by snapping into place.

14. Turn on power to system . Test thermostat as described

in the following 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 THERMOSTAT AND

VOID YOUR WARRANTY.

CAUTION: DONOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50°F (10°C).

THIS CAN DAMAGE THE AIR CONDITIONING SYSTEM AND CAUSE PERSONAL INJURY.

1. Place the COOL-OFF-HEAT-EM

switch into the COOL position

2. Press the button until the

temperature setting is at east

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 turning on again. This protects the

compressor. No additional time delay relay is required. To override the 5-

minute delay for installation, press the RESET button.

3. Put the COOL-OFF-HEAT-EM switch

into the OFF position. The air

conditioning system should turn off.

4. Put the COOL-OFF-HEAT-EM switch

into the HEAT position.

Batteries NOT Required.

°F/°C Switch

COOL-OFF-HEAT-EM

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 COOL-OFF-HEAT-EM 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 AUTO-ON switch to the

ON position. The blower fan should

turn on.

8. Put the AUTO-ON switch to

the AUTO position. The blower fan

should turn off.

Step 4: Customizing Your Thermostat

◆Setting or Changing

the Setpoint Temperature

Settings

System

Cool: The thermostat controls the cooling.

Off: The heating and cooling systems are off.

Heat: The thermostat controls the heat.

EM: The thermostat controls the second stage emergency heat.

Fan

Auto: Equipment controls the fan.

On: The fan operates continuously.

Temperature

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

default setpoint temperature for cooling is 78°F (25°C). After putting

the system switch in heat, cool, or em, press either the or

button to adjust the temperature setting up or down.

AUTO - ON

COOL-OFF-HEAT-EM

AUTO - ON

COOL-OFF-HEAT-EM AUTO - ON

AUX

CHECK EMER

◆Changing Temperature Differential

IMPORTANT: The temperature differential is factory set at 1 (1°). This

means that whenever the room temperature changes by one half of a

degree from the temperature setting, the system will turn on. If the system

turns on too often, increase the temperature differential.

1. Press both and buttons

at the same time and hold for one

second. The display will show:

2. Press either the or button

to adjust the temperature

differential up or down.

The display will return to the room temperature five

seconds after the last input.

◆Changing Fahrenheit (F) to Celsius (C)

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

You may change the display to Celsius if desired.

1. Move the manual switch marked F (Fahrenheit) and C (Celsius)

located at the top center of the circuit board to the desired setting

(see page 7).

2. Press RESET button located to the right of the LCD display to register

the change.

The display will change to show the temperature in your desired tempera-

ture scale. To return the thermostat to its original setting, repeat steps 1

and 2 above.

◆LED Indicators

The LED indicators are used to indicate system activity. The AUX indicator

illuminates during a call for second stage heating. The auxiliary stages are

used to maintain comfort during extremes in weather conditions. If the

AUX LED is illuminated too frequently during periods of moderate temper-

ature, check the differential settings (see above).

The CHECK indicator is used to monitor system status. If the CHECK indi-

cator is illuminated, call your local HVAC service provider.

The EMER indicator is illuminated only when the system switch is moved

to the EM, emergency heat position. The EM position is used only when

the primary stage of heat is not functioning or requires service.

COOL-OFF-HEAT-EM AUTO - ON

AUX

CHECK EMER

If problems with thermostat cannot be resolved, call:

Technical Support: (800) 445-8299

Monday-Friday 7:30-5:30 CST

Thermostat does not turn

on system. Check wiring.

(See Installing Model 9520

Thermostat)

Check fuse. Replace with 2 amp

fuse if fuse has opened.

Thermostat turns on and

off too frequently. Increase temperature differential.

(See Changing Temperature

Differential)

Display is blank, flashing,

or constant LO BAT. Replace batteries.

System fan does not

operate properly. Move fan option switch to either

gas or electric, to match system.

(See Installing Model 9520

Thermostat)

Thermostat does not display

proper room temperature. Check F Fahrenheit/C Celsius

switch located at top center of cir-

cuit board for proper position. If a

new selection is made, press

RESET button located to the right

of the LCD display.

Troubleshooting

Symptom Remedy

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