White Rodgers 37-7248A User Manual

Blue Single 1/1 Stage Thermostat with

CAUTION

Automatic Heat/Cool Changeover Option

Save these instructions for future use!

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

Model Programming Choices

1F80-0471 5/2 Day 5/1/1 Day Non-Programmable

1F86-0471 Non-Programmable

APPLICATIONS

THERMOSTAT APPLICATION GUIDE

Description

Gas or Oil Heat Ye s

Electric Furnace Ye s

Heat Pump (No Aux. or Emergency Heat) Ye s

Heat Pump (with Aux. or Emergency Heat) No

Systems with up to 3 Stages Heat, 2 Stages Cool No

Heat Only Systems Ye s

Millivolt Heat Only Systems – Floor or Wall Furnaces Ye s

Cool Only Systems Ye s

Hydronic (Hot Water) Zone Heat – 2 Wires Ye s

Hydronic (Hot Water) Zone Heat – 3 Wires Ye s

Single Stage or Heat Pump

Installation and Operating Instructions for Model:

1F80-0471 Thermostat

SPECIFICATIONS

Electrical Rating:

Battery Power .................................................... mV to 30 VAC, NEC Class II, 50/60 Hz or DC

Input-Hardwire ................................................... 20 to 30 VAC

Terminal Load ........................................................... 1.0 A per terminal, 1.5A maximum all terminals combined

Setpoint Range ......................................................... 45° to 90°F (7° to 32°C)

Rated Differentials: Fast Med. Slow

Heat (SS) ........................................................... 0.4 °F 0.6 °F 1.7 °F

Cool (SS) ........................................................... 1.2 °F – 1.7 °F

Heat Pump (HP) ................................................ 1.2°F – 1.7°F

Operating Ambient .................................................... 32° to +105°F (0° to +41°C)

Operating Humidity ................................................... 90% non-condensing max.

Shipping Temperature Range ................................... -4° to +150°F (-20° to +65°C)

Dimensions Thermostat ............................................ 3-7/16"H x 4-7/16"W x 1-1/4"D

To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete.

Index Page

Installation 2 Wiring Connections 2 Thermostat Quick Reference 3 Installer Conﬁguration Menu 4 Operating Your Thermostat 6 Programming 6 Troubleshooting 8

ATTENTION: MERCURY NOTICE

This product does not contain mercury. However, this product may replace a product that contains mercury.

Mercury and products containing mercury must not be discarded in household trash. Do not touch any spilled mercury. Wearing non-absorbent gloves, clean up any spilled mercury and place in a sealed container. For proper disposal of a product containing mercury or a sealed container of spilled mercury, place it in a suitable shipping container. Refer to www.thermostat-recycle.org for location to send product containing mercury.

www.white-rodgers.com

www.emersonclimate.com

PART NO. 37-7248A

1119

WARNING

INSTALLATION

Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code.

Remove Old Thermostat

A standard heat/cool thermostat consists of three basic parts:

1. The cover, which may be either a snap-on or hinge type.

2. The base, which is removed by loosening all captive screws.

3. The switching subbase, which is removed by unscrewing

the mounting screws that hold it on the wall or adapter plate. Before removing wires from old thermostat, label

each wire with the terminal designation from which it was attached. Disconnect the wires from the old thermo- stat one at a time. Do not let wires fall back into the wall.

Installing New Thermostat

1. Pull the thermostat body off the thermostat base. Forcing

or prying on the thermostat will cause damage to the unit.

2. Place base over hole in wall and mark mounting hole

locations on wall using base as a template.

3. Move base out of the way. Drill mounting holes. If you

are using existing mounting holes and the holes drilled are too large and do not allow you to tighten base snug ly, use plastic screw anchors to secure the base.

4. Fasten base snugly to wall using mounting holes shown

in Figure 2 and two mounting screws. Leveling is for appearance only and will not affect thermostat operation.

5. Connect wires to terminal block on base.

6. Push excess wire into wall and plug hole with a ﬁre re-

sistant material (such as ﬁberglass insulation) to prevent drafts from affecting thermostat operation.

7. Carefully line the thermostat up with the base and snap

into place.

Batteries

2 "AA" alkaline batteries are included in the thermostat. To install the batteries, pull the battery door as shown by the arrow and lift open. Using the polarity indicated inside the battery door, insert the batteries. To close the battery door, swing the door down while pulling in the direction of arrow. Once fully down, snap the door back into position. To replace the batteries, set system to OFF, following the instructions above.

Figure 1 – Battery door shown open

“AA” Alkaline Batteries

Thermostat can be powered by system AC power or Battery. If

is displayed, the thermostat is battery powered. If

is not displayed, thermostat is system powered with optional battery back-up. When battery power remaining is approximately half, the

" is displayed, install fresh “AA” alkaline batteries immediately. For best results, replace all batteries with a premium brand alkaline battery such as Duracell recommend replacing batteries every 2 years. If the home is going to be unoccupied for an extended period (over 3 months) and

is displayed, the batteries should be replaced before leaving. When less than two months of battery life remain, the setpoint temperature will offset by 10 degrees (10 degrees cooler in Heat mode / 10 degrees warmer in Cool mode). If offset occurs, the normal setpoint can be manually reset with

within two days if batteries are not replaced.

will be displayed. When "Change

or Energizer®. We

or . Another offset will occur

SS/HP Switch

Figure 2 – Thermostat base and rear view of thermostat

(Conventional or Heat Pump Selection)

The SS/HP switch is factory set to the SS position. In this position, thermostat is conﬁgured as conventional single stage. If you have a single stage heat pump system, switch SS/HP to HP position (see ﬁgure 2).

Gas/Elec Switch (Fan Option)

The GAS/ELEC switch is factory set to the GAS position. In this position, the thermostat will not power the circulator fan on a call for heat, but will power the circulator on a call for cool.

Mounting

Hole

Place Level across Mounting Tabs (for appearance only)

Mounting

Hole

Place Level

across

Mounting Tabs

(for appearance only)

If your system requires that the thermostat power the circulator fan on a call for heat, this switch should be set to the ELEC position. Typically, gas and oil heating systems do not require the thermostat to power the circulator fan during a call for heat. If your heat is gas or oil, the switch should be set to the GAS position.

When the thermostat is conﬁgured for Heat Pump, the thermostat will always power the circulator fan on a call for heat in the HEAT mode.

SS/HP

Switch

GAS

ELEC

GAS/ELEC Switch

WIRING CONNECTIONS

Refer to equipment manufacturers' instructions for speciﬁc system wiring information. After wiring, see CONFIGURATION section for proper thermostat conﬁguration. Refer to 37-6754 wiring diagram speciﬁcations.

TERMINAL DESIGNATION DESCRIPTIONS

Terminal Designation Description

HP) Changeover valve for heat pump RC ........................ Power for Cooling

Y ............................ Compressor Relay C .......................... Common wire from secondary side of

W ........................... Heat Relay cooling system transformer or heat

G ............................ Fan Relay only system transformer

O/B ........................ (SS) Power closed for 3 wire zone RH ........................ Power for Heating

Terminal Designation Description

Room

THERMOSTAT QUICK REFERENCE

Home Screen Description

Displays the power level of the 2 "AA" batteries: indicates good power level. indicates batteries at about half power. “Change ” indicates batteries are low and should be replaced with 2 new premium brand “AA” Alkaline batteries.

Figure 3 – Home Screen Display

SYSTEM Indicator

SYSTEM Button

Time

Day of Week

FAN Indicator

FAN Button

Temperature

MENU/SCHEDULE/RUN Button

Figure 4 – Programming & Conﬁguration Items

Setting Temperature

Temperature Up/Down

HOLD Button

Programming and Conﬁguration Items

Flame icon (

HEAT mode. Snowﬂake icon ( system is in COOL mode.

The word "Hold" is displayed when the thermostat is

in the HOLD mode. "Temp Hold" is displayed when the thermostat is in a Temporary HOLD mode.

Displays "Change Filter" when the system has run for

the programmed ﬁlter time period as a reminder to change or clean your ﬁlter.

Displays "Set" for setpoint when in Run Program mode.

Displays System Mode (Heat, Cool, Auto, Off) or

"Time" in menu mode.

Displays Fan Mode (On, Auto) or "Run" in Menu

mode or "Saving" in Cool Savings

) is displayed when the system is in

) is displayed when the

Mode.

Displays "Run Schedule", "Schedule", or "Menu".

Displays "Save" when Cool Savings

Displays "Heat Pump" when system is conﬁgured

as Heat Pump thermostat.

Displays "Hold" in programmable mode when

in "Hold" mode. Displays Light Bulb in nonprogrammable mode.

Alternates Time of Day and "LOC" when keypad

lockout is enabled.

In Conﬁguration Menu, shows screen number. If blank,

thermostat is earlier model and requires instruction sheet 37-6749D.

is working.

INSTALLER/CONFIGURATION MENU

To enter the Conﬁguration Menu, SYSTEM must be set to HEAT, COOL, Em or AUTO. Press the Menu button for at least 5 seconds. The display will show item #1 in the table below. Press Menu button to advance to the next menu item. Press

to change an item option. Shaded items are not available on 1F86.

INSTALLER/CONFIGURATION MENU

Screen

Number

06 07

11 12

13 14

16 17 18 19

SS HP

 



 



 

Displayed

(Factory Default)

(OFF) Lk L Selects Keypad Lockout.

(000) Lk 001 to 999 Selects Keypad lockout combination number

(Cool O) On Heat b On Reversing Valve Output (SS/HP switch must be in

(2) P P 3, P 0 Selectable Programs Per Week

(OFF)

Cool Savings CS

(3) CS 6, 5, 4, 3, 2, 1 Selects Cool Savings value 1 (low) to 6 (high) (On) E E OFF Selects Energy Management Recovery (EMR)

(ME)

CR Heat

(FA)

CR Cool

(FA)

CR Heat Pump

(OFF) CL CL On Compressor Lockout Time

Auto-Heat

Cool-Off

(On) dL OFF Selects Display Light On or OFF

0 HI 1 HI, 2 HI, 3 HI, 4 HI,

°F °C

L (90) Heat L 62 to L 89 Selects Limited HEAT Range L (45) Cool L 46 to L 82 Selects Limited COOL Range

(OFF) Change Filter Change Filter On Selects Filter Change-out Indicator

(200 h) Change

Filter

Press

select from listed options

Cool Savings CS On Select Cool Savings On of OFF

Heat-Cool-Off, Heat-Off

Heat-Off without Fan icon,

Cool-Off, Auto-Off

1 LO, 2 LO, 3 LO, 4 LO

25 h to 1975 h in

25-hour increment

or to

(Not available on earlier models)

the Heat Pump HP position)

(For programmable thermostat only)

SL, FA Adjustable Anticipation (Heat) (only when SS/HP

switch is at the SS position)

SL Adjustable Anticipation (Cool) (only when SS/HP

switch is at the SS position)

SL Adjustable Anticipation (Heat Pump)

(only when SS/HP switch is at the HP position)

System Mode Conﬁguration with Automatic

with Fan icon,

Adjustable Ambient Temperature Display

Selects Fahrenheit/Celsius Temperature Display

When on, selects time in 25 hour increments

Comments

On or OFF

Changeover

25-hour increment

1 & 2)Keypad Lockout – This menu selection will display

“Lk” and “OFF” (default, keypad not locked out). The

and are used to toggle the selection between OFF and “L” (keypad locked out). When the keypad lockout selection is enabled “L”, and the MENU button is pressed again, the display will indicate the number “0” (default, still disabled) in the time digits. The and to 999. If a combination of 0 is selected and the MENU button is pressed, the menu will be exited and keypad will not be locked. If 1 to 999 is selected and the MENU button is pressed, the combination is stored into memory and the menu is exited. The “Lk” will display designating keypad locked with a valid combination. The SYSTEM button will operate for 10 seconds after the menu mode is exited to allow the user to change the mode from “OFF” to the desired SYSTEM mode.

While the keypad is locked out, a press of MENU will en-

ter the conﬁguration menu. The ﬁrst menu item displayed is the combination code “0”. The used to set the combination unlock number from 0 to

are used to set the combination number from 0

or keys are

999. If the unlock number matches exactly with the combination lock number stored in memory when the MENU button is pressed, the keypad is unlocked and the “Loc” is removed. If the unlock number does not match when the MENU button is pressed, the combination returns to “0” for another attempt to set the unlock code. To exit the menu without unlocking the keypad, press RUN SCHED.

To reset the combination code and unlock the keypad if

the code is forgotten, see troubleshooting section.

3) Select Reversing Valve Output (SS/HP switch must be set at HP, omitted if SS/HP switch is SS Position) – The O/B option is factory set at "O" position. This will accommodate the majority of heat pump applications, which require the changeover relay to be energized in COOL. If the thermostat you are replacing or the heat pump being installed with this thermostat requires a "B" terminal, to energize the changeover relay in HEAT, the O/B option should be set at "B" position.

INSTALLER/CONFIGURATION MENU

4) Program Options 1F80 only – This control can be conﬁgured for 5/2 day or 5/1/1 day programming or non-programming mode. The default setting is P2, indicating 5/2 day programming. The programs per week can be toggled to P3 or P0 by pressing the non-programmable will eliminate the need for EMR, and that step in the menu will be skipped.

5 & 6)Select Cool Savings™ and value – Selects the Cool

Savings feature On or OFF. If selected On, press MENU to select the amount of adjustment for the feature in Cool mode with 1 (1°) being the least amount of adjustment and 6 (6°) being the most amount of adjustment. Default value is 3 (3°). In normal operation "Saving" will appear under "Fan".

Cool Savings is an optional energy saving feature that can

reduce your cooling costs. It is based on the principal that lower indoor humidity makes a slightly higher temperature feel more comfortable. Cool Savings operates during periods of high demand which normally occur on the hottest summer days when the cooling system may run for hours to reach the thermostat setting. Long cooling run times also lower the indoor humidity. Cool Savings very slowly adjusts the setpoint temperature to make the setpoint closer to the displayed temperature, to a maximum number of degrees selected. Adjusting the setpoint temperature over a long cooling run time allows the system to reach your set temperature and turn off. The room temperature will actually be higher than the thermostat displays, but the reduction in humidity will allow comfort at the slightly higher temperature. When Cool Savings is making adjustments, "Save" will show next to the setpoint temperature and the room temperature may vary within the adjustment range selected.

If this feature is selected OFF, no change will occur when

the cooling system is continually running during periods of high demand.

7) Energy Management Recovery: (this step is skipped if

conﬁgured to be non-programmable).

Energy Management Recovery (E) On enables the ther-

mostat to start heating or cooling early to make the building temperature reach the program setpoint at the time you specify. Heating will start 5 minutes early for every 1° of temperature required to reach setpoint.

Example: If E On is selected and have your heating pro-

grammed to 65° at night and 70° at 7 AM. If the building temperature is 65°, the difference between 65° and 70° is 5°. Allowing 5 minutes per degree, the thermostat setpoint will change to 70° at 6:35 AM. Cooling allows more time per degree, because it takes longer to reach set temperature.

8, 9 & 10) Cycle Rate Selection – The factory default settings with SS/HP switch in SS position for Heat is medium cycle (ME) and Cool is fast cycle (FA). For Heat Pump (HP), the default setting is fast cycle (FA).

To change cycle rate, press the

Cycle rate differentials for different settings are:

or keys. A selection of 0 Days for

or key.

11) Select Compressor Lockout CL OFF or ON – Selecting CL ON will cause the thermostat to wait 5 minutes between

cooling cycles. This is intended to help protect the compressor from short cycling. Some newer compressors already have a time delay built in and do not require this feature. Your compressor manufacturer can tell you if the lockout feature is already present in their system. When the thermostat compressor time delay occurs, it will ﬂash the setpoint for up to ﬁve minutes.

12) System Mode Conﬁguration – This thermostat is conﬁg- ured for Heat and Cool with Auto changeover (SYSTEM switch with Cool Off Heat Auto) default. It can also be conﬁgured for Heat and Cool (Cool Off Heat), Heat only with fan (Off Heat), Heat only without fan, Auto only (Auto Off), and Cool only (Cool Off).

13) Select Backlight Display – The display backlight improves display contrast in low lighting conditions. When the "C" terminal is powered, selecting backlight CdL ON will keep the light on continuously. Select backlight OFF will keep the light on momentarily after any key is pressed. When the "C" terminal is not powered, the light will be on momentarily after any key is pressed no matter whether the backlight is selected ON or OFF.

14) Select Temperature Display Adjustment 4 LO to 4 HI. Allows you to adjust the room temperature display up to 4° higher or lower. Your thermostat was accurately calibrated at the factory, but you have the option to change the display temperature to match your previous thermostat. The current or adjusted room temperature will be displayed on the left side of the display.

15) Select F° or C° Readout – Changes the display readout to Centigrade or Fahrenheit as required.

16 & 17) Temperature Limit Range Heat or Cool – This se-

lection sets the maximum HEAT (16) or minimum COOL (17) temperature for the setpoint range. Select the limit temperature using the

or keys. In the Run mode, the setpoint temperature will not adjust past the limit temperature selected. When the limit temperature is reached, trying to raise or lower the setpoint past the limit will cause “L” to be displayed in the times digits for about 6 seconds. This feature is not available on earlier models.

18 & 19)Select Filter Replacement Reminder and Set Run

Time. Select the "Change Filter" reminder On or OFF. If selected On, press MENU to select the time period from 25 to 1975 hours in 25 hours increments. In a typical system, 200 hours (default) of run time is approximately 30 days. After the selected time of blower operation, the thermostat will display "Change Filter" as a reminder to change or clean your air ﬁlter. When "Change Filter" is displayed, press MENU button to clear the display and restart the time to the next ﬁlter change.

Fast Medium Slow MODE FA ME SL

Heat (SS) 0.4°F 0.6°F 1.7°F Cool (SS) 1.2°F – 1.7°F

Heat Pump (HP) 1.2°F – 1.7°F

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