White-Rodgers 1F78-151 Emerson 70 Series Instruction Manual
White-Rodgers 1F78-151 Emerson 70 Series
White-Rodgers 1F78-151 Emerson 70 Series
White-Rodgers 1F78-151 Instructions
Here we offer the White-Rodgers 1F78-151 Emerson 70 Series manual completely free and in English. We have cataloged this manual in the Thermostats section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about White-Rodgers 1F78-151 Emerson 70 Series, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
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White-Rodgers 1F78-151 Emerson Serie 70 Specifications
| Category | Specification |
|---|---|
| Model | White-Rodgers 1F78-151 Emerson Serie 70 |
| Type | Non-Programmable Thermostat |
| Electrical Rating | 0 to 30 VAC 50/60 Hz. or D.C. |
| Load per Terminal | 0.05 to 1.0 Amps |
| Maximum Total Load | 1.5 Amps (all terminals combined) |
| Setpoint Temperature Range | 45°F to 90°F (7°C to 32°C) |
| Operating Ambient Temperature Range | 32°F to 105°F (0°C to 41°C) |
| Operating Humidity Range | 0 to 90% RH (non-condensing) |
| Shipping Temperature Range | -40°F to 150°F (-40°C to 66°C) |
| Rated Differential | 0.6° to 1.6°F with adjustable anticipation (default cycle rate just under 1°F, ~1.5°F with W905 clipped for hydronic) |
| System Compatibility | Standard Heat Only (2-wire gas/oil), Electronic Ignition Heat Only, Standard Heat/Cool (24V, electric heat), Heat Only Electric Heat, Cool Only, Heat Pump (No Aux or Emergency Heat), Hot Water Zone Heat Only (2-wire), Millivolt Systems, 12 VDC Mobile Home |
| System Incompatibility | Hot Water Zone Heat Only (3-wire), Line Voltage Heating (110/240 Volt), Multistage Systems, Systems Exceeding 30VAC/1.5 Amp |
| Power Source | 2 "AAA" alkaline batteries |
| Dimensions (W x H x D) | 5.1"W x 3.7"H x 1.1"D |
White-Rodgers 1F78-151 Details
The White-Rodgers 1F78-151 Emerson Serie 70 is a robust non-programmable thermostat designed for simplified yet effective temperature management in both residential and light commercial settings. It serves as an excellent replacement for older units, including those that previously contained mercury, offering a modern, environmentally conscious upgrade. This thermostat's broad compatibility makes it suitable for diverse HVAC systems, from standard heat/cool and electric heat configurations to heat pump systems without auxiliary or emergency heat, hot water zone heating, and even millivolt furnaces.
Installation is designed to be straightforward, with comprehensive instructions guiding users through the process of removing existing thermostats and wiring the new unit. Safety is prioritized, with clear warnings to disconnect electrical power during installation. The thermostat base features easily identifiable terminals (RH, RC, G, W, Y) and includes a factory-installed jumper between RH and RC, which is essential for single-transformer systems. Various wiring diagrams are provided to accommodate different system types, ensuring a smooth setup.
A notable feature of the 1F78-151 is its adaptability to specific heating requirements. For electric heat or single-stage heat pump systems that mandate the thermostat to activate the fan during a call for heat, an internal GAS/ELECTRIC switch can be conveniently set to the ELECTRIC position. Additionally, for hydronic systems such as hot water or steam heating, clipping the W905 jumper on the circuit board extends the heating cycle, fine-tuning the temperature control from approximately 1°F to 1.5°F for optimal performance.
The thermostat enhances user experience with its large, easily readable display, complemented by a backlight feature for improved visibility in dimly lit environments. This backlight, though not present on earlier models, significantly aids in adjusting settings at any time. Users can appreciate the capability for simultaneous heating and cooling setpoint storage, eliminating the need to reset temperatures at the start of each season. Temperature adjustments are effortlessly made using dedicated up and down arrow buttons.
For precise comfort, the temperature display can be calibrated by ±3°F, allowing users to match the thermostat's reading with their preferred room temperature. The unit operates on two "AAA" alkaline batteries, and a clear low battery indicator is displayed (a blank screen with a battery icon or "LO BATTERY" on older versions). This alert triggers approximately four weeks before the thermostat automatically adjusts the setpoint by 10°F (raising in COOL, dropping in HEAT) to prompt battery replacement. Furthermore, a 3-5 minute compressor lockout protection, signified by a flashing snowflake icon, prevents rapid cycling and potential damage to the compressor.
The 1F78-151 also offers °F/°C convertibility, activated by clipping the W904 jumper on the circuit board, catering to individual preferences for temperature units. In the event of erratic operation due to voltage spikes or static discharge, a simple reset operation is available: pressing both arrow buttons simultaneously while moving the SYSTEM switch from OFF to HEAT. This action also restores factory default settings. For any additional assistance, White-Rodgers provides a dedicated homeowner help line at 1-800-284-2925, ensuring comprehensive support for their product.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the White-Rodgers 1F78-151 Emerson Serie 70, and we answer them below.
