REMOTE THERMOSTAT AND LOW VOLTAGE CONTROL CONNECTIONS

REMOTE THERMOSTAT

ALL FRIEDRICH VERT-I-PAK UNITS ARE FACTORY CONFIGURED TO BE CONTROLLED BY USING A SINGLE STAGE HEAT/COOL REMOTE WALL MOUN- TED THERMOSTAT. THE THERMOSTAT MAY BE AUTO OR MANUAL CHAN- GEOVER AS LONG AS THE CONTROL CONFIGURATION MATCHES THAT OF THE VERT-I-PAK UNIT.

TO CONNECT THE WALL-MOUNTED THERMOSTAT:

1.PULL THE DISCONNECT SWITCH.

2.UNSCREW AND REMOVE THE CONTROL BOX PANEL.

3.AFTER SELECTING WHICH SIDE YOU WANT TO RUN YOUR THERMOSTAT WIRE THROUGH, RUN THE WIRES THROUGH THE SIDE HOLE IN THE BOX TO REACH THE CONNECTION TERMINAL FOR THE WIRING.

4.MAKE THE WIRE CONNECTIONS, APPROPRIATELY MATCHING THE WIRES AS SHOWN IN THE WIRING DIAGRAM.

5.ONCE EACH WIRE IS MATCHED AND CONNECTED, THE UNIT IS NOW READY FOR OPERATION.

6.REATTACH THE CONTROL BOX COVER.

DESK CONTROL TERMINALS

THE FRIEDRICH VERT-I-PAK HAS BUILT-IN PROVISIONS FOR CONNEC- TION TO AN EXTERNAL SWITCH TO CONTROL POWER TO THE UNIT. THE SWITCH CAN BE A CENTRAL DESK CONTROL SYSTEM OR EVEN A NORMA- LLY OPEN DOOR SWITCH.

FOR DESK CONTROL OPERATION, CONNECT ONE SIDE OF THE SWITCH TO THE D1 TERMINAL AND THE OTHER TO THE D2 TERMINAL (SEE FIGURE 15). WHENEVER THE SWITCH CLOSES, THE UNIT OPERATION WILL STOP.

NOTE: THE DESK CONTROL SYSTEM AND SWITCHES MUST BE FIELD SUPPLIED.

MAXIMUM WIRE LENGTH FOR DESK CONTROL SWITCH

WIRE SIZE

MAXIMUM LENGTH

 

 

#24

400 FT.

#22

600 FT.

#20

900 FT.

#18

1500 FT.

#16

2000 FT.

AUXILIARY FAN CONTROL

NOTE: IT IS THE INSTALLER’S RESPONSIBILITY TO ENSURE THAT ALL CONTROL WIRING CONNECTIONS ARE MADE IN ACCORDANCE WITH THE INSTALLATION INSTRUCTIONS. IMPROPER CONNECTION OF THE THERMOSTAT CONTROL WIRING AND/OR TAMPERING WITH THE UNIT’S INTERNAL WIRING CAN VOID THE EQUIPMENT WARRANTY AND MAY RESULT IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. OTHER MANUFACTURER’S UNITS AND EVEN OLDER FRIEDRICH MODELS MAY HAVE DIFFERENT CONTROL WIRING CONNECTIONS. QUESTIONS CONCERNING PROPER CONNECTIONS TO THE UNIT SHOULD BE DIRECTED TO THE FACTORY.

CONTROL BOARD

FIGURE 14

 

Interface Definition

Terminal Code

 

Wire Connection Function

C

 

COMMON GROUND TERMINAL

GH

 

CALL FOR HIGH FAN

GL

 

CALL FOR LOW FAN

B

 

CALL FOR HEAT PUMP REVERSING VALVE

Y

 

CALL FOR COMPRESSOR

W

 

CALL FOR HEATING

R

 

24V POWER FROM ELECTRONIC CONTROL TO WALL

 

THERMOSTAT

 

 

 

 

 

THE SMART CENTER ALSO HAS THE ABILITY TO CONTROL A 24VAC RELAY TO ACTIVATE AN AUXILIARY, OR TRANSFER, FAN. THE OUTPUTS ARE LISTED AS F1 AND F2 ON THE CONTROL BOARD.

TO CONNECT THE RELAY, SIMPLY WIRE ONE SIDE OF THE RELAY TO F1 AND THE OTHER SIDE TO F2. ANYTIME THAT THE FAN RUNS, THE TERMINALS WILL SEND A 24VAC SIGNAL TO THE RELAY. THE RELAY MUST BE 24VAC, 100MA OR LESS.

NOTE: THE RELAY AND AUXILIARY FANS MUST BE FIELD SUPPLIED.

12

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Friedrich 920-075-13 (1-11) Remote Thermostat and LOW Voltage Control Connections, To Connect the WALL-MOUNTED Thermostat
Page 13 Page 15

920-075-13 (1-11) specifications

Friedrich 920-075-13 (1-11) is a sophisticated HVAC unit designed for effective heating and cooling solutions in commercial and residential settings. This model exemplifies modern engineering with a focus on energy efficiency and user convenience. It features a versatile configuration that makes it suitable for a variety of spaces, ensuring optimal climate control.

One of the main features of the Friedrich 920-075-13 (1-11) is its advanced cooling technology. The unit is equipped with high-efficiency compressors that provide rapid cooling performance while consuming minimal energy. This is complemented by a user-friendly digital thermostat that allows for precise temperature settings, enhancing user comfort and satisfaction.

The heating capabilities of this model are equally impressive. Friedrich has integrated a powerful heating element that can quickly warm up any room, making it ideal for year-round use. This is particularly beneficial in regions with extreme temperature fluctuations, ensuring that users remain comfortable regardless of the season.

In terms of build quality, the Friedrich 920-075-13 (1-11) boasts a robust construction that ensures long-lasting performance. Its durable materials are designed to withstand frequent use and adverse environmental conditions. Additionally, the unit features a compact design that allows for easy installation and integration into existing spaces without compromising aesthetic appeal.

Technologically, the Friedrich 920-075-13 (1-11) incorporates smart features such as energy-saving modes and programmable timers. These functionalities enable users to optimize energy use, reducing overall electricity costs while maintaining comfort levels. Moreover, the unit operates quietly, minimizing noise disruption in various settings.

Another notable characteristic is the air filtration system which enhances indoor air quality. The built-in filter captures dust, allergens, and pollutants, ensuring that the air circulated within a space is clean and healthy. This feature is particularly important for individuals with allergies or respiratory conditions.

Finally, the Friedrich 920-075-13 (1-11) is backed by a reliable warranty, reflecting the manufacturer's confidence in its quality and performance. This HVAC unit represents an ideal choice for those seeking a combination of efficiency, comfort, and modern technology in their heating and cooling systems. With its powerful features and innovative design, it stands out as a leading option in the market.
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