White Rodgers 1F95W-71 User Manual

The White Rodgers 1F95W-71 is a 7-day multi-stage electronic digital thermostat with programmable fan control from the Comfort-Set 90 Series for multi-stage heat/cool or heat pump systems. It features 7-day programming with 4 periods per day, automatic changeover, Computed Energy Management Recovery (EMR), compressor short cycle protection, programmable blower control, and 9V battery backup. Powered by 24 VAC; compatible with systems up to 3 stages heat/2 stages cool. Below are the key specifications, installation, operation, programming, and troubleshooting instructions.

Preparations

Assemble tools: hand or power drill with 3/16 inch drill bit (if needed), flat blade screwdriver, wire cutter/stripper, level. Shut off electricity at main fuse box until installation complete. Label wires before disconnecting. This thermostat is for 24V systems only; not for line voltage. Install away from drafts, direct sunlight, or heat sources for accurate sensing. Install a fresh 9V alkaline battery before programming.

WARNING! Failure to read and follow all instructions carefully before installing or operating this control could cause personal injury and/or property damage. Save these instructions.

Description

The thermostat uses solid-state microcomputer technology to provide precise time/temperature control. Features 7-day programming with four time/temperature settings per day, simultaneous heat/cool programs, up to 3 stages heat/2 stages cool, EMR, automatic changeover, compressor protection, programmable fan (PRG FAN), keypad lockout, °F/°C convertibility. LCD display shows time/room temp/setpoint, up/down arrows, SYSTEM switch (HEAT/OFF/COOL/AUTO), FAN switch (ON/AUTO). Terminals: R (hot), C (common), G (fan), O/B (changeover), Y1/Y2 (compressor stages), W1/W2/W3 (heat stages).

Applications: Multi-Stage Heat Pump: Yes; Heat Pump with Aux: Yes; Multi-Stage Conventional: Yes; Single-Stage Heat/Cool: Yes; Heat Only: Yes; Cool Only: Yes; Gas/Oil/Electric/Hydronic: Yes; Residential/Commercial: Yes; Millivolt: No.

Precautions

CAUTION! To prevent electrical shock/equipment damage, disconnect power at main fuse/circuit breaker until installation complete. Label wires prior to disconnection. If in doubt about wiring, consult qualified heating/air conditioning contractor.

WARNING! Do not use on circuits exceeding 20-30 VAC 50/60 Hz (1.5A per terminal, 2.5A max total); higher voltage damages control/causes shock/fire. Do not short terminals on gas valve/primary control to test; short/incorrect wiring burns out components/causes injury/property damage. Conform to NEC Class II circuits. Do not operate cooling below 50°F (compressor damage). Turn OFF before battery replacement. Use 9V Energizer alkaline only. Handle to avoid static discharge.

ATTENTION! This product does not contain mercury but may replace one that does. Do not open mercury cells; if damaged, wear non-absorbent gloves, clean up spilled mercury, place in sealed container. Refer to www.white-rodgers.com for disposal.

Specifications

• Electrical: 20-30 VAC 50/60 Hz, NEC Class II; Terminal Load 1.5A per terminal, 2.5A max total.
• Batteries: 9V Energizer alkaline (backup).
• Setpoint Range: 40°F to 99°F (4°C to 37°C).
• Operating Ambient: 32°F to 105°F (0°C to 41°C).
• Humidity: 90% non-condensing max.
• Shipping: -40°F to 150°F (-40°C to 65°C).
• Dimensions: Approx. 3-1/2”H x 6”W x 1-1/8”D.
• Other: 7-day programming with 4 periods/day; EMR; Auto changeover; Programmable fan.

Removing Old Thermostat

A standard heat/cool thermostat consists of three basic parts: 1) Cover; 2) Base; 3) Subbase. Label each wire with terminal designation before disconnecting. Disconnect wires one at a time; do not let fall into wall.

Installation

Remove old thermostat. Mount new base level on wall, connect wires to terminals. Push excess wire into wall, secure base, attach thermostat body. Power up and configure.

Batteries: Install 9V Energizer alkaline; low battery flashes "BATTERY". Replace if flashing; program retained.

Wiring Diagrams

Terminal Designations: R (24V hot), C (common), Y1/Y2 (compressor stages), G (fan), W1/W2/W3 (heat stages), O/B (changeover).

Single Stage Heat/Cool: R to hot, C to common, Y1 to compressor, G to fan, W1 to heat.

Multi-Stage: Add Y2 2nd cool, W2/W3 2nd/3rd heat.

Heat Pump: Y1/Y2 compressor, O/B changeover (O cool, B heat), W1/W2/W3 aux heat.

CAUTION! Refer to equipment manuals for specifics. Follow standard HVAC wiring practices.

Check Operation

Restore power. Set SYSTEM to HEAT/COOL, FAN to ON/AUTO, adjust setpoint to test.

Fan Operation

1. FAN ON: Blower runs continuously.
2. FAN AUTO: Blower runs on call for heat/cool.
3. PRG FAN: Programmable continuous during periods.

Heating System

1. SYSTEM HEAT.
2. Setpoint above room temp: Heat activates (red LED 1st stage, yellow 2nd/3rd).
3. Setpoint below: Heat stops.

Emergency System

1. SYSTEM OFF to disable in case of failure.

Cooling System

CAUTION! Do not operate below 50°F.

1. SYSTEM COOL.
2. Setpoint below room temp: Cool activates (5-min delay, red LED 1st, yellow 2nd).
3. Setpoint above: Cool stops.

Operating Features

• Home Screen: Backlit LCD shows time/temp, alternates; icons for system on, hold, etc.
• Key Features: Automatic changeover, preprogrammed schedules, short-cycle protection (5-min), programmable fan, two-hour override, indefinite hold, °F/°C, adjustable cycle times, keypad lockout.
• EMR: Activates system early to reach setpoint.
• Range Limits: 40-99°F.

Programming

7-day programming; 4 periods per day. Factory preprogrammed; use VIEW PRGM to review.

1. Set Time/Day: Press SET CLOCK, TIME FWD/BACK for hour/min, DAY for day.
2. Program: Select HEAT/COOL, set times/temps for periods using VIEW PRGM, TIME FWD/BACK, UP/DOWN.
3. Copy: Hold COPY to duplicate day.
4. Review: Press VIEW PRGM to cycle through.
5. Run: Press RUN PRGM.
6. Hold: Press HOLD for permanent; two-hour override available.

Factory Heat: All days 5AM 70°F, 8AM 62°F, 5PM 70°F, 10PM 62°F. Cool: 5AM 78°F, 8AM 85°F, 5PM 78°F, 10PM 82°F.

Installer Configuration

Configure using option switches on back. Factory-set switches #1/#2 not to be changed.

Troubleshooting