Table of Contents
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INDEX
Thermostat Installation
Wiring
Installer Menu
Test Equipment
Using the Thermostat
Thermostat Overview
Thermostat Operation
Thermostat Schedule/Programming
Troubleshooting
Technical Support
SPECIFICATIONS
Electrical Rating:
Battery Power ..................................... 20 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 ........................................ 60° to 85° F (16° to 29° C)
Rated Differentials (@ 6°F/ Hr): Fast .Med Slow
Heat Pump (Heating) ........................... 0.9°F
Heat Pump (Cooling) ........................... 0.9°F
Auxiliary Heat ...................................... 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
emerson.com/white-rodgers
2-4
Thermostat Applications
2
3-4
Single Stage Cooling, One or Two
Stage Heating – 1 Stage Aux Heat
4
Electric only
5-7
5
MERCURY NOTICE: This product does not contain
6
mercury. However, this product may replace a product
6-7
that contains mercury. Mercury and products containing
mercury must not be discarded in household trash.
7-8
Refer to www.thermostat-recycle.org for information
on disposing of products containing mercury.
8
1.2°F
1.2°F
0.75°F
1F75P-21PR (Programmable)
Installation and Operating Instructions
Hardwired with Common
1.7°F
1.7°F
1.9°F
PART NO. 37-7881001
PTAC Thermostat
Maximum
Stages
Heat/ Cool
2/1
2241
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Table of Contents
Related Manuals for Emerson 1F75P-21PR
Summary of Contents for Emerson 1F75P-21PR
- Page 1 1F75P-21PR (Programmable) Installation and Operating Instructions PTAC Thermostat Hardwired with Common INDEX Thermostat Installation Maximum Thermostat Applications Stages Wiring Heat/ Cool Installer Menu Single Stage Cooling, One or Two Stage Heating – 1 Stage Aux Heat Test Equipment Electric only...
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Page 2: Thermostat Installation
THERMOSTAT INSTALLATION 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. Terminal Designations Terminal Function Low Speed Fan Relay Power (24V) Changeover Terminal-Energized in Cool (O) or Heat (B) for Heat Pump... -
Page 3: Installer Menu
Battery Location Premium AA alkaline batteries are required. The batteries provide a back-up source of power (this will maintain the clock in the event of a power outage). Note: Batteries are included Jumper wire Instructions: To convert the system from PTHP to PTAC, cut the jumper wire located in the back of the thermostat. -
Page 4: Test Equipment
INSTALLER MENU (C0ntinued) Settings Installer’s Menu # Default Setting Description (flashing icons) (Hold Menu 8 Seconds) (Press Early Start (starts heating or On – start early cooling early so your programmed OFF – start at program temperature is reached by the period time programmed time) °F –... -
Page 5: Using The Thermostat
USING THE THERMOSTAT THERMOSTAT OVERVIEW Before you begin using your thermostat, you should be familiar with its features, display and the location/operation of the thermostat buttons and switches. THERMOSTAT BUTTONS THE DISPLAY AND SWITCHES 1.) Fan Switch 9.) Thermostat is protecting the equipment from short cycling (5-minute delay) 2.) System Switch 10.) Indicates that the system is running in cool, heat or auxiliary... -
Page 6: Thermostat Operation
THERMOSTAT OPERATION • Hold Temperature (bypassing the schedule) – With the System Switch set to Heat or Cool, momentarily press the Hold button. Hold will be displayed. Use to adjust the temperature. The thermostat will hold the room temperature at the selected setting until you press Run to start program operation again. -
Page 7: Troubleshooting
4. Press PROGRAM once (the programmed temperature will flash). Press until your selected temperature appears. 5. Press PROGRAM once. The currently programmed start time and setpoint temperature for the 2nd heating program period will appear. 6. Repeat steps 3 and 4 to select the start time and heating temperature for the 2nd heating program period. - Page 8 TROUBLESHOOTING (C0ntinued) Symptom Possible Cause Corrective Action 1.) System Switch not set to Cool Verify thermostat and system wires are securely attached. 2.) Loose connection to thermostat Diagnostic: Set System Switch to Cool and lower setpoint below room temperature. Same procedures as diagnostic or system 3.) Cooling System requires service or for “No Heat”...
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