Emerson IF85U-22NP User Manual

1F85U-22NP (Non-Programmable)

WARNING

CAUTION

INDEX

Thermostat Installation

Wiring

Installer Menu

Test Equipment

Using the Thermostat

Thermostat Overview

User Menu

Thermostat Operation

Troubleshooting

Homeowner Help Line

Optional Accessory: Wall Cover-Up Plate F61-2663, 6-3/4” W x 4-1/2” H

2-4

3-4

5-7

7-8

Installation and Operating Instructions

Battery Powered or Hardwired with Common

Thermostat Applications

Conventional Gas, Oil, Electric (mV and 24V), Heat only, Cool only or Heat/Cool Systems

Heat Pump (Air Source or Geothermal) with Aux. Heat

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.

Refer to www.thermostat-recycle.org for information

on disposing of products containing mercury.

80 SeriesTM Universal Thermostat

SPECIFICATIONS

Electrical Rating:

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

Input-Hardwire .................................... 20 to 30 VAC, NEC Class II, 50/60 Hz

Terminal Load .......................................... 1.5 A per terminal, 2.5A maximum all terminals combined

Setpoint Range ........................................ 45° to 99° F (7° to 37° C)

Rated Dierentials (@ 6°F/ Hr): Fast Med Slow

Heat (Conventional Gas / Oil / Elect) ..... 0.5°F 0.75°F 1.9°F

Cool (Central Air) ................................. 0.9°F 1.2°F 1.7°F

Heat Pump (Heat and Cool) ................ 0.9°F 1.2°F 1.7°F

Heat Pump Aux. .................................. 0.5°F 0.75°F 1.9°F

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

Display Temperature Range ....................... 32°F to +99°F (0 to 37°C)

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

Shipping Temperature Range ................... -20°F to + 150°F (-29° to +65°C)

Thermostat Dimensions ........................... 3-3/4” H x 6” W x 1-1/8” D

white-rodgers.com emersonclimate.com

PART NO. 37-7572B-EN

Maximum

Stages

Heat/ Cool

2/2

2/1

1535

THERMOSTAT INSTALLATION

WIRING

Refer to equipment manufacturer’s instructions for specic system wiring information. After wiring, see INSTALLER MENU for proper thermostat conguration. Wiring table shown are for typical systems and

describe the thermostat terminal functions. Wiring will change when dedicated emergency heat is on (See Installer Menu #15).

Terminal Designations Terminal Function

O/B

6 (not shown) - 3 wire zone valve

G Fan Relay

W/E

Y2 2nd Stage compressor (conventional only)

Power (24V) - Cooling

Power (24V) - Heating

Reversing Valve or output for 3 wire zone valves

Congurable as “O” or “B” Reversing Valve or 3 wire

zone heat (power close)

1st Stage Compressor (conventional or heat pump)

1st Stage Heat (conventional); 1st Stage Auxiliary Heat (heat pump)

Can operate as Emergency Heat only (See Installer Menu #15)

Common wire for 24V (optional with batteries)

Heat Pump Malfunction / Diagnostic terminal (input signal requires common)

2nd Stage Heat (Conventional) Can operate as 1st Stage Auxiliary Heat (See Installer Menu #15)

Leveling Thermostat

Leveling is for appearance only and

will not aect thermostat operation.

Precautions

• Do not exceed the specication ratings.

• All wiring must conform to local and national electrical codes and ordinances.

• This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.

Do not use on circuits exceeding specied voltage.

Higher voltage will damage control and could

cause shock or re hazard.

Do not short out terminals on gas valve or primary

control to test. Short or incorrect wiring will burn

out thermostat and could cause personal injury

and/or property damage.

To prevent compressor and/or property damage, if the outdoor temperature is below 50°F,

Do not allow the compressor to run unless the compressor oil heaters have been operational

for 6 hours and the system has not been operational for at least 5 minutes.

DO NOT operate the cooling system.

To prevent electrical shock and/or equipment

damage, disconnect electrical power to system,

at main fuse or circuit breaker box,until

installation is complete.

RC/RH Jumper Wire

This thermostat electrically connects

the RC and RH terminals so a jumper wire is not required. If the application provides a separate wire for RC and RH, clip the RC/RH jumper. This will isolate both terminals so they can be independently used.

Baery Locaon

Premium AA alkaline batteries are required when C-wire is not available. When C-wire is available, the batteries provide a back-up source of power (this will maintain the clock in the

INSTALLER MENU

event of a power outage).

To prevent changes that may aect system performance, this thermostat has an INSTALLER

MENU and a USER MENU. The INSTALLER MENU provides access to every option, while the

USER MENU provides access to items that will not aect system performance. To access the

INSTALLER MENU press the Menu button for 8 seconds. The display will show item 05 in the table below. Use Next and Back to navigate through menu items. Press or to change a menu setting.

Installer Menu #

(Hold Menu 8 Seconds)

Description

Outdoor Equipment: selects air

conditioner (AC) or heat pump (HP) equipment as well as the number of stage

Indoor Equipment: selects whether the equipment is a gas furnace, electric furnace or fan only

Dedicated Emergency: W/E only operates in Emergency Aux mode. W2 becomes 1st stage Aux. Heat

O,B or 3 Wire Zone Valve Selection

Heat Cycle Rate: how often the heat will turn on

Aux Cycle Rate: how often the auxiliary heat will turn on

Cool Cycle Rate: how often the cooling will turn on

Compressor Lockout: protects the compressor from short cycling

Max Heat Limit: maximum set point for heat mode

Minimum Cool Limit: minimum set point for cool mode

Default Setting

(ashing icons)

AC2

EL2

OFF

MEd

OFF

45 45 to 97

Settings

(Press or )

AC0 AC1 AC2 HP1

FAN GA1

GA2 (convenonal only)

EL1

EL2 (convenonal only)

On OFF

O B

SLO – slow MEd – medium FAS – fast

On – 5 minute delay OFF – no delay

47 to 99

INSTALLER MENU (C0ntinued)

Installer’s Menu #

(Hold Menu 8 Seconds)

Description

Fahrenheit or Celsius °F

Temperature Display Adjustment:

adjust the displayed “Room

Temperature” Continuous Display Light: keep

the backlight always on – “C” wire

required Auto Changeover: thermostat

automatically switches between heat and cool

Keypad Lock: prevent unwanted changes to the thermostat

Default Setting

(ashing icons)

OFF

0 -5 to +5

Settings

(Press or )

°F – Fahrenheit °C – Celsius

On – always on OFF – momentarily

On – enable auto OFF – disable auto

On – disable buttons OFF – all buttons are active

TEST EQUIPMENT

Turn on power to the system.

Fan Operation If your system does not have a G terminal connection, skip to Heating System.

1.) Press the fan button to select the On position. The blower should begin to operate.

2.) Press the fan button to select the Auto position. The blower should stop immediately.

Heating System

1.) Press the System button to select the Heat position. Heat Pumps only - if the auxiliary

heating system has a standing pilot, be sure to light it.

2.) Press to adjust thermostat setting to 1° above room temperature. The heating system

should begin to operate and the thermostat will indicate Heat On.

3.) For heat pumps with auxiliary- Press to adjust thermostat setting to 3° above room

temperature. The auxiliary heat should begin to operate and the thermostat will indicate Heat On Aux.

4.) Press to adjust thermostat setting 1° below room temperature. The heating system

should stop operating and the Heat On icon will disappear.

Auxiliary System ( only for heat pumps with auxiliary)

1.) Press the system button to select the Aux position. This bypasses the heat pump and

runs auxiliary only heat.

2.) Press to adjust thermostat setting to 1° above room temperature. The auxiliary heating

system should begin to operate and the thermostat will indicate Heat On Aux.

3.) Press to adjust thermostat setting 1° below room temperature. The auxiliary heating

system should stop operating and the Heat On Aux icon will disappear.

Cooling System

1.) Press the System button to select the Cool position.

2.) Press to adjust thermostat setting 1° below room temperature. The blower should

come on immediately on high speed, followed by cold air circulation. The thermostat will indicate Cool On. There can be up to a 5 minute delay. (see INSTALLER MENU, item 50)

3.) Press to adjust thermostat setting to 1° above room temperature. The cooling system

should stop operating and the Cool On icon will disappear.

Note: If Starting Soon is shown on the display, the compressor lockout feature is operating. There will

be up to a 5 minute delay before the compressor turns on (see INSTALLER MENU, item 50).

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