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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Friedrich RT4, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Friedrich RT4 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Friedrich RT4. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Friedrich RT4 should contain:
- informations concerning technical data of Friedrich RT4
- name of the manufacturer and a year of construction of the Friedrich RT4 item
- rules of operation, control and maintenance of the Friedrich RT4 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Friedrich RT4 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Friedrich RT4, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Friedrich service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Friedrich RT4.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Friedrich RT4 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
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-Minute Power Loss Memory Retention[...]
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Page 2
T able of Contents Parts Diagram ........................................................................................................................................... 1 Specifications ................................................................................................................ ........................... 2 Important Safety [...]
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Page 3
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[...]
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Page 4
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 (0.5°C to 1.5°C) Accuracy: ± 1°F (± 0.5°C) • System configurations: Sin[...]
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Page 5
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 . General Description • The RT4 thermostat is a hardwired, digital, [...]
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Page 6
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. 1. T urn off power to the heating and cooling system by removing the fuse or switching off the appropriate circuit bre[...]
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Page 7
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. 7. Using a 3/16” drill bit, drill holes in the places you ha[...]
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Page 8
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 control C C T ransformer , common side M, 4, RH, RS, R R T ransformer , hot side[...]
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Page 9
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. After 5 seconds, the display returns to showing the current room temperature. Setting a New T[...]
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Page 10
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. Result: The A/C system and fan should turn on. Action: Set t[...]
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Page 11
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[...]
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Page 12
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 controlling the fan Check that the Gas/Electric switch is set to electric Thermostat is continuously turning on and off Increase the temperature differential [...]
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Page 13
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 . fried rich . com[...]