Emerson 1F85U-22PR Installation And Operating Instructions

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

Wiring

2
Installer Menu 3-4
Test Equipment 4
Using the Thermostat 5-7
Thermostat Overview 5
User Menu 6
Thermostat Operation 6
Thermostat Schedule 7
Troubleshooting 7-8
Homeowner Help Line 8

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 Differentials (@ 6°F/ Hr): Fast
Heat (Conventional Gas / Oil / Elect) ..... 0.5°F
Cool (Central Air) ................................. 0.9°F
Heat Pump (Heat and Cool) ................ 0.9°F
Heat Pump Aux. .................................. 0.5°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
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1F85U-22PR (Programmable)
Installation and Operating Instructions
80 Series Universal Thermostat
TM
Battery Powered or Hardwired with Common
Maximum
Thermostat Applications Stages
Heat/ Cool
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.
Med Slow
0.75°F 1.9°F
1.2°F 1.7°F
1.2°F 1.7°F
0.75°F 1.9°F
PART NO. 37-7555B-EN

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
6 (not shown) - 3 wire zone valve
2/2
2/1
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 handling or
distorting components could cause the control to malfunction.
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could
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
1535
THERMOSTAT INSTALLATION
RC Power (24V) - Cooling
RH
Power (24V) - Heating
Reversing Valve or output for 3 wire zone valves
O/B
Configurable as "O" or "B" Reversing Valve or 3 wire
zone heat (power close)
1st Stage Compressor (conventional or heat pump)
Y
G Fan Relay
1st Stage Heat (conventional);
1st Stage Auxiliary Heat (heat pump)
W/E
Can operate as Emergency Heat only
(See Installer Menu #15)
Common wire for 24V (optional with batteries)
C
Heat Pump Malfunction / Diagnostic terminal
L
(input signal requires common)
Y2 2nd Stage compressor (conventional only)
2nd Stage Heat (Conventional)
Can operate as 1st Stage Auxiliary Heat
W2
(See Installer Menu #15)
WARNING
!
To prevent electrical shock and/or equipment
damage, disconnect electrical power to system,
cause shock or fire hazard.
at main fuse or circuit breaker box,until
and/or property damage.
CAUTION
!
To prevent compressor and/or property damage, if the outdoor temperature is below 50°F,
DO NOT operate the cooling system.
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.
Terminal Function
Leveling Thermostat
Leveling is for appearance only and
will not affect thermostat operation.
CAUTION
!
installation is complete.
2