In the heating cycle, the heat anticipator is energized to supply a small amount of heat during the "on" cycle. This will open the contacts in the thermostat prematurely to maintain a closer differential between the "cut in" and "cut out" temperature. The heat anticipator is energized in the heating mode regardless of whether fan is placed in the automatic (MoneySaver) or constant run position.

RANGE:

Cooling Model Thermostat

 

60°F (±2°) to 92°F (±4°),

TEST:

Cooling/Heating Models: Remove wires from thermostat and check continuity between terminal "2" (common) and "3" for cooling. Check between terminals "2" (common) and "1" for heating. Also check that contacts in thermostat open after placing in either position. NOTE: Temperature must be within range listed to check thermostat. Refer to the troubleshooting section in this manual for additional information on thermostat testing.

THERMOSTAT ADJUSTMENT

No attempt should be made to adjust thermostat. Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration, it is suggested that the thermostat be replaced rather than calibrated. Thermostat bulb must be straight to insure proper performance.

Figure 32

Thermostat

Figure 34

Thermostat Bulb Location

(KQ, YQ & SC Models Only)

Thermostat sensor holder 020 to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown

DEFROST THERMOSTAT (Heat Pump Models Only)

(See Figure 35)

This thermostat is single pole - double throw with contacts between terminals "2" and "3" closing on temperature rise and contacts between terminals "2" and "1" closing on temperature fall. When the contacts between terminals "2" and "1" make, power is supplied to the heater element.

This control is dual purpose control that acts as an outdoor thermostat and defrost control.

When the sensing bulb, attached to the condenser coil, senses enough icing on the outdoor coil, it will interrupt power to the compressor and supply power to the heating element until the coil temperature reaches above 43°, then the heater will shut off and the unit will resume operating in the reverse cycle mode.

When the outdoor coil temperature drops below 20°, the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43°.

The fan motor will not turn off when defrost occurs, and the 4- way valve will not reverse.

THERMOSTAT BULB LOCATION

The position of the bulb is important in order for the thermostat to function properly. The bulb of the thermostat should be located approximately 45° to a maximum of 60° from horizontal. Also, do not allow the thermostat bulb to touch the evaporator coil. (See Figures 33 and 34)

Figure 33

Thermostat Bulb Location

(SQ Models Only)

Thermostat sensor holder 020 and anticipator (4712D-140) to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown

Figure 35

Defrost Thermostat

(Heat Pump Models)

25

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Friedrich racservmn Thermostat Adjustment, Defrost Thermostat Heat Pump Models Only, Thermostat Bulb Location
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racservmn specifications

Friedrich Racervmn is an innovative name in the realm of precision engineering, making significant strides in the development of advanced technologies for various industries. This company stands out due to its commitment to creating high-quality, reliable, and efficient products that cater to the diverse needs of its clientele.

One of the main features of Friedrich Racervmn is its focus on research and development. The company invests heavily in R&D to push the boundaries of what is technically possible. This dedication results in the continuous improvement of their product line and the introduction of cutting-edge solutions that leverage the latest advancements in technology.

Among the distinctive technologies used by Friedrich Racervmn is their proprietary manufacturing process, which integrates automation and robotics to enhance efficiency and precision. This not only speeds up production times but also ensures that the products maintain a consistently high quality. The use of Computer Numerical Control (CNC) machines in their processes allows for intricate designs and complex geometries that meet rigorous industry standards.

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Friedrich Racervmn’s customer service stands out as well. Their team is dedicated to providing exceptional support, ensuring that clients receive personalized attention and solutions tailored to their unique needs. This customer-centric approach is a fundamental part of their philosophy and has contributed to building strong and lasting relationships within the industry.

In summary, Friedrich Racervmn is a leader in precision engineering, recognized for its advanced technologies, innovative manufacturing processes, commitment to sustainability, and outstanding customer service. The company’s focus on quality and innovation positions it as a vital player in the modern industrial landscape, continuously pushing the envelope toward a more technologically advanced and environmentally conscious future.
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