Instruction/ maintenance manual of the product RT4 Friedrich
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Manual Changeover Non-Programmable Hardwired RT4 Non-Programmable Electronic Thermostat Installation, Operation & Application Guide • For use with F riedrich PT AC and V ert-I-Pak Systems • 30.
T able of Contents Parts Diagram ........................................................................................................................................... 1 Specifications .............................................................
1 P arts Diagram Mode Switch Fan Switch Celsius/ Fahrenheit Jumper Reset Button Heat Pump/ Non-Heat Pump Jumper Gas/Electric Switch F–C NON–HP HP Cool Heat Off On Auto Electric Gas.
2 Specifications Input: • V oltage: 18-30 VAC Output: • Maximum: 1 amp per terminal (3 amp total for all terminals) T emperature Ranges: • T emperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C) • Differential range: 1°F to 3°F (0.
3 P ackage Contents/T ools Required Package includes: RT4 non-programmable thermostat on base, thermostat cover , wiring labels, screws and wall anchors, Installation, Operation and Application Guide. T ools required for installation: Drill with 3/16” bit, hammer , screwdriver .
4 ELEC T RI C A L SHO CK H A Z A R D – T urn of f powe r at the main s er vic e pane l by rem oving th e fuse or swi tching th e appr opriate ci rcui t breaker to th e OFF p ositio n befor e rem oving th e exis ting ther most at.
5 T o Install Thermostat (continued) 4. Put thermostat base against the wall where you plan to mount it (Be sure wires will feed through the wire opening in the base of the thermostat). 5. Mark the placement of the mounting holes. 6. Set thermostat base and cover away from working area.
6 Replace the old labels with the enclosed new labels: Replacing Wiring Labels Old New T ype F , G G Fan control relay B B Heat active reversing valve Y , Y6 Y Cooling control H, W , 4 W Heating contr.
7 Setting the Room T emperature (Setpoint T emperature) Step 1: Press the or button; the current temperature setpoint displays. Step 2: Press the or button until the desired temperature setpoint displays. The new temperature setting is automatically saved.
8 caution! : Do not switch system to cool if the outdoor temperature is below 50°F (10°C). This can damage the air conditioning system and may cause personal injury . Action: Set the Mode switch to Cool . Press the button until the temperature setting is 3°F below the room temperature.
9 Wiring Diagram NOTE: B terminal used on heat pump models only C R W Y B G C R W Y B O G T H E R M O S T A T F R I E D R I C H P T A C HARDWIRED.
10 T roubleshooting Symptom Remedy The system is not turning on Check the wiring (see Installation, Page 4) LCD is blank Check the wiring (see Installation, Page 4) Thermostat is not properly controll.
Friedr ich Air Co nditioning Co. Post O f fice B ox 1 54 0 • San A ntonio, T ex as 782 95- 1 540 42 00 N. Pan A m E xpre ss way • San Antonio, T e xas 782 1 8 -52 1 2 (2 1 0) 3 57 - 44 00 • FA X ( 2 1 0) 3 57 - 44 80 w w w .
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If you already are a holder of Friedrich RT4, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Friedrich RT4.
However, one of the most important roles played by the user manual is to help in solving problems with Friedrich RT4. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Friedrich RT4 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
