Robertshaw 9415 User manual

DIGITAL

NON-PROGRAMMABLE

THERMOSTAT

9415

ELECTRIC

GAS

OIL

NeW

2 Heat / 2 Cool

User's Manual

Quick Start

Installation

Application

The Robertshaw 9415 is a multi-stage thermostat designed to control

24 VAC gas or electric two-stage heating and two-stage cooling systems.

Features

•Summer and winter setpoints

•Large back lit display

•Adjustable 1st stage temperature differential: .5°F to 3.0°F

(0.5°C to 1.5°C)

•Adjustable 2nd stage temperature differential: 1° to 6°F (.5°-3°C)

•Compressor short cycle protection

•Accuracy within ±1°

•Zone system compatible as a master thermostat

•Permanent memory retention

•Fahrenheit/Celsius display option

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

•Quick wire terminal block

•Automatic heating shutdown if temperature exceeds 94°F (34°C)

110-1043B

IMPORTANT SAFETY INFORMATION

WARNING:

•Always turn off power at main fuse or circuit breaker panel before

installing, removing, cleaning, or servicing thermostat.

•Read all the information in this manual before installing 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.

•Do not connect ground to any terminal in this unit.

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.

4. Remove existing thermostat base from wall.

Old Terminal New Label Description

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

Y, Y1 or M Y1 1st Stage Cooling Circuit

O or R O Cool Active Accessory Terminal

BBHeat Active Accessory Terminal

F or G G Fan Control Relay

Y2 Y2 2nd Stage Cooling Circuit

W2 or W-U W2 2nd Stage Heating Control

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

W1 or W W1 1st Stage Heating Circuit

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

Table 1

Figure 1

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 9415 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 HEAT-OFF-COOL in OFF position (Figure 2).

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

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

Figure 3

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

Figure 2

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. If mounting on a surface other than drywall, drill the marked holes

using a 3/16" drill bit.

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.

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). Tighten screws.

13. Make sure wire connections are secure.

14. Push excess wire back through opening.

Mounting Holes

WIRING

OPENING

Figure 4

Y2 W1 GOB

Figure 5

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

9415 WIRING SAMPLE #1

Y1 W1 W2 GCRY2

9415 WIRING SAMPLE #2

CRY2Y1 W1 W2 G O B

9415 WIRING SAMPLE #3

BY1 W1 W2 GCO

W1 W2

RY2

9415 WIRING SAMPLE #4

CGRY2Y1

◆Wiring Diagrams

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

system or ELEC for an electric heating system (Figure 6).

16. Replace thermostat cover by snapping into place.

17. Turn on power to system. Test thermostat as described in the

following section.

GAS/ELECTRIC

Switch

Figure 6

TERMINAL LEGEND - 9415

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.

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: DO NOT 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 HEAT-OFF-COOL switch into

the COOL position. The display will read COOL.

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. The snowflake icon will be displayed

(1st Stage;  2nd Stage).

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 HEAT-OFF-COOL switch into

the OFF position. The air conditioning system

should turn off. The display will read

SYSTEM OFF.

4. Put the HEAT-OFF-COOL switch into

the HEAT position. The display will read HEAT.

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.

The flame icon will be displayed

(1st Stage;  2nd Stage).

6. Put the 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. The display will read

SYSTEM OFF.

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

position. The blower fan should turn on.

The display will show a and ON.

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

position. The blower fan should turn off.

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.

Fan

Auto: Equipment controls the fan.

On: The fan operates continuously.

Temperature

Heating: The default temperature for heating is 70°F (21°C). To

change the default setpoint, put the system switch in HEAT and

press the or button to adjust the temperature setting up or

down. The display will show SET. The display will return to the

current room temperature three seconds after the last input and

the new setpoint will be saved.

Cooling: The default temperature for cooling is 78°F (25°C). To

change the default setpoint, put the system switch in COOL and

press the or button to adjust the temperature setting up or

down. The display will show SET. The display will return to the

current room temperature three seconds after the last input and

the new setpoint will be saved.

Figure 7

◆Temperature Differential 2nd Stage Delay

The temperature differential is factory set at 1.0°F (.5°C) for the 1st stage

differential and 2°F (1°C) for the 2nd stage. This means that whenever the

room temperature changes by one degree Fahrenheit from the tempera-

ture setting, the system will turn on. If the system turns on too often,

increase the temperature differential.

This thermostat is equipped with an adjustable 2nd stage time delay. The

delay is factory set at 20 minutes. The time delay setting prevents the 2nd

stage system from activating until the delay time has expired. If the 2nd

stage is turning on too often, increase the time delay.

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

settings. The 2nd stage also will turn on if the temperature has not

increased (or decreased in the event of cooling) for a period of

20 minutes.

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

Temperature Differential, and

2nd Stage Delay

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

Fahrenheit (US models) or degrees Celsius (Canadian models). The

temperature display can be changed. Press and hold both the

and button for three seconds. The display will read F or C.

Release buttons. Press the or button to switch the display.

2. After three seconds the display will switch to the 1st stage

differential settings. The display will read DIFFERENTIAL 1st.

3. After three seconds the display will switch to the 2nd stage differ-

ential setting. The display will read DIFFERENTIAL 2nd. The temper-

ature differential is factory set at 2°F (1°C). Press the or button

to adjust the differential up or down.

4. After 3 seconds, the display will switch to the 2nd stage delay

setting. The second stage delay is factory set at 20 minutes. Press

the or button to adjust the time delay in 5 minute increments.

5. Wait three seconds or press and the display will return to the

original room temperature.

◆Backlit Display

This thermostat is equipped with a backlight to make nighttime temper-

ature adjustments quick and easy. Press the button to activate the

backlight. The backlight will turn off after about 5 seconds of inactivity.

RESET Switch

◆Reset

To reset the thermostat press the RESET button located just below the

lower left corner of the display.

Step 5: Troubleshooting

Symptom Remedy

System fan does not operate

properly.

Move fan option switch to either

gas or electric, to match system

(see Installation section).

Check F/C (Fahrenheit/Celsius)

setting. See Changing Fahrenheit

(F) to Celsius (C).

Thermostat does not display

proper room temperature.

Thermostat turns system on and

off too frequently.

Thermostat does not turn on system. Check wiring (see Installation

section).

Increase temperature differential

(see Changing the Temperature

Differential section).

If problems with thermostat cannot be resolved, call:

Technical Support: (800) 445-8299

Monday-Friday 7:30 AM - 5:30 PM CST

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