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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Bryant 394HAD, 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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The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Bryant 394HAD 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 Bryant 394HAD. 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 Bryant 394HAD should contain:
- informations concerning technical data of Bryant 394HAD
- name of the manufacturer and a year of construction of the Bryant 394HAD item
- rules of operation, control and maintenance of the Bryant 394HAD item
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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 Bryant 394HAD 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 Bryant 394HAD, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Bryant 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 Bryant 394HAD.
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Table of contents for the manual
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Page 1
NOTE: Read the entire instruction manual before starting the installation. These procedures are for sizes 65,000 through 150,000 Btuh units. Index Page SAFETY CONSIDERATIONS .....................................................1 CARE AND MAINTENANCE..................................................1-5 Air Filter Arrangement ........................[...]
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Page 2
WARNING: Turn off the gas and electrical supplies to the unit before performing any maintenance or service. Follow the operating instructions on the label attached to the furnace. A failure to follow this warning could result in personal injury. WARNING: Never store anything on, near, or in contact with the furnace, such as: 1. Spray or aerosol can[...]
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Page 3
b. Remove blower and control access doors. c. Release filter retainer from clip at front of furnace casing. (See Fig. 4.) For side return, clips may be used on either or both sides of the furnace. d. Slide filter out. e. Furnaces are equipped with permanent, washable filters. Clean filters with tap water. Spray water through filter in opposite dire[...]
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Page 4
b. Remove screws holding cutoff plate and remove cutoff plate from housing. c. Lift blower wheel from housing through opening. 14. Clean blower wheel and motor using a vacuum cleaner with soft brush attachment. Do not remove or disturb balance weights (clips) on blower wheel blades. The blower wheel should not be dropped or bent as balance will be [...]
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Page 5
12. Reconnect wires to the following components: a. Draft safeguard switch b. Inducer motor c. Pressure switch d. Limit overtemperature switch e. Gas valve f. Edge connector leading to control box 13. Reconnect vent pipe to relief box. Replace vent pipe enclosure (downflow furnace only). 14. Replace blower access door only and secure with 2 screws [...]
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Page 6
Fig. 8—Heating and Cooling Application Wiring Diagram A78461 115-VOLT FIELD- SUPPLIED FUSED DISCONNECT AUXILIARY J-BOX CONTROL BOX 24-VOLT TERMINAL BLOCK TWO-WIRE HEATING- ONLY FOUR WIRE FIELD-SUPPLIED FUSED DISCONNECT CONDENSING UNIT TWO WIRE FURNACE R G C W R G Y GND GND FIELD 24-VOLT WIRING FIELD[...]
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Page 7
Fig. 9—Unit Wiring Diagram A92176 FU1 IDR PL1-3 PR-1 PR-2 SEC-1 SEC-2 TRAN 24VAC 115VAC BLWM LO MED LO MED HI HI COM CAP L2 COM 4 3 2 1 C CFR HFR PL4 NOTE#4 NOTE#8 EAC-1 EAC-2 L1 ILK EQUIPMENT GROUND TO 115V AC FIELD DISCONNECTIONS NOTE #5 NOTE#10 PL2 L1 L2 PL1-1 IDR PL1-4 ALS FL LS PL1-7 R Y W G C NOTE #1 CFR NOTE #10 PL1-2 PL1-6 NC NO PRS C [...]
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Page 8
A91253 Is 24VAC across pressure switch N/O contact & screw C on board? YES NO Is 24VAC across pressure switch N/O contact & screw C on board? Is heat exchanger pressure drop greater than 0.35-in. wc? Is 24VAC across gas valve? Is unit lit? Check/Replace: 1. Vent systems 2. Induce wheel 3[...]