Emerson 1F85U-42PR Instruction Manual

Emerson 1F85U-42PR (Programmable) Installation and Operating Instructions

1F85U-42PR (Programmable) Installation and Operating Instructions Universal Thermostat Battery Powered or Hardwired with Common

Emerson 1F85U-42PR Spesification

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 Differentials (@ 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

Emerson 1F85U-42PR WIRING

Refer to equipment manufacturer’s instructions for specific system wiring information. After wiring, see INSTALLER MENU for proper thermostat configuration. 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

RC

Power (24V) - Cooling

RH

Power (24V) - Heating

O/B

6 (not shown) - 3 wire zone valve

Reversing Valve or output for 3 wire zone valves Configurable as “O” or “B” Reversing Valve or 3 wire zone heat (power close)

Y

1st Stage Compressor

G

Fan Relay

W/E

1st Stage Heat (conventional);

1st Stage Auxiliary Heat (heat pump)

Can operate as Emergency Heat only

(See Installer Menu #15)

C

Common wire for 24V (optional with batteries)

L

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

Y2

2nd Stage compressor

W2

2nd Stage Heat (Conventional)

2nd Stage Auxiliary Heat (Heat Pump)

Can operate as 1st Stage Auxiliary Heat

(See Installer Menu #15)

Emerson 1F85U-42PR WIRING

Precautions

  • Do not exceed the specification 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 handing or distorting components could cause the control to malfunction.  

Emerson 1F85U-42PR Jumper WIRING

Emerson 1F85U-42PR INSTALLER MENU

To prevent changes that may affect 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 affect 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 UP or Down to change a menu setting.  

Emerson 1F85U-42PR INSTALLER MENU

Emerson 1F85U-42PR INSTALLER MENU 2

Readmore and Download Emerson 1F85U-42PR Instruction Manual

Title : Emerson 1F85U-42PR Instruction Manual
Format : PDF
Pages : 8 Pages
Language : English
File Size : 2 MB

 

Emerson 1F85U-42PR Manual