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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Honeywell R845A, 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.
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Unfortunately, only a few customers devote their time to read an instruction of Honeywell R845A. 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.
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First and foremost, an user manual of Honeywell R845A should contain:
- informations concerning technical data of Honeywell R845A
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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Honeywell R845A 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 Honeywell R845A, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Honeywell 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 Honeywell R845A.
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Table of contents for the manual
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Page 1
1 60-2481—2 J.H. • Rev. 10-94 • ©Honeywell Inc. 1994 • Form Number 60-2481—2 R182J, R482J, R845A, R847A, R882J, RA89A, RA832A Switching Relays These relays provide intermediate or heavy duty service in a wide variety of switching con- figurations. ■ Relays with 24V control coils: Rl82J, R882J, R847A, RA89A, RA832A, and R845A. ■ Relay[...]
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Page 2
60-2481—2 2 R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SPECIFICATIONS • ORDERING INFORMATION Specifications IMPORTANT: The specifications given in this publica- tion do not include normal manufacturing toler- ances. Therefore, this unit may not exactly match the listed specifications Also, this product is tested and calibrated under close[...]
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Page 3
3 60-2481—2 R182J, R482J, R845A, R847A, R882J, RA89A, RA832A SPECIFICATIONS • INSTALLATION a IMPORTANT: The transformer on the R182 can over- heat when used with a series 20 thermostat if the total resistance of the thermostat (including thermo- stat wire and thermostat contact resistance) exceeds 2.5 ohms, add a 100 ohm, 10 watt resistor betwe[...]
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Page 4
60-2481—2 4 R182J, R482J, R845A, R847A, R882J, RA89A, RA832A INSTALLATION MOUNTING For replacement, mount the relay in the same location as the old control. If this is a new installation, locate the relay vertically on a solid wall or partition as near as possible to the device to be controlled. Select a location that is easily accessible for ins[...]
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Page 5
5 60-2481—2 R182J, R482J, R845A, R847A, R882J, RA89A, RA832A INSTALLATION Fig. 5—Thermostat connections for R182J. Fig. 7—Schematic diagram showing R845A in multizone, forced hydronic heating system. This arrangement is suitable for any number of additional zones. Fig. 8—R845A hookup for controlling two loads. L1 HOT L2 2 1 3 4 1 1 RA845A R[...]
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Page 6
60-2481—2 6 R182J, R482J, R845A, R847A, R882J, RA89A, RA832A INSTALLATION • SERVICE AND CHECKOUT Fig. 9—Internal schematic and hookup for R847A. Fig. 11—Internal view of RA832A Switching Relay. M3824 24V TRANSFORMER RELAY 1 2 34 T T X X L1 (HOT) L2 TT L2 L1 3 4 1 1 TO POWER LOW VOLTAGE (CLASS 2) 2-WIRE THERMOSTAT R847A POWER SUPPLY. PROVIDE[...]