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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Honeywell Q674B, 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 Q674B. 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 Q674B should contain:
- informations concerning technical data of Honeywell Q674B
- name of the manufacturer and a year of construction of the Honeywell Q674B item
- rules of operation, control and maintenance of the Honeywell Q674B item
- safety signs and mark certificates which confirm compatibility with appropriate standards
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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 Q674B 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 Q674B, 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 Q674B.
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Table of contents for the manual
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Page 1
S. M. • Rev. 6-93 • • ©Honeywell Inc. 1993 • Form Number 69-0580—2 M3375 T874A,D Zone Thermostats/ Q674B,D,E Subbases TABLE 2—THERMOSTAT/SUBBASE SPECIFICATIONS. Thermostat/ Anticipator Range (A) Thermostat/Subbase Switching Subbase Heating Cooling Order Number a System Fan Color (Adj.) (Fixed) T874A1465/Q674B1471 HEAT-OFF-COOL ON-AUTO [...]
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Page 2
Installation WHEN INSTALLING THIS PRODUCT… 1. Read these instructions carefully. Failure to fol- lo w them could damage the product or cause a hazard- ous condition. 2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application. 3. Installer must be a trained, experienced service techn[...]
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Page 3
3 69-0580—2 letter code is located near each subbase terminal for identi- fication. The terminal barrier permits straight or conven- tional wraparound wiring connection (Fig. 4). 2. Some Q674 Subbases have RC and RH terminals for isolated heating and cooling transformers. For zoning systems, jumper RC and RH terminals as shown in Fig. 5 and wire [...]
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Page 4
MOUNTING THE THERMOSTAT 1. Remove the thermostat cover by pulling the bottom edge of the cover outward away from the base until it snaps free from the cover clip. NOTE: The cover is hinged at the top and is removed by pulling out at the bottom. 2. Carefully remove and discard the polystyrene packing insert that protects the mercury switches during [...]
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Page 5
5 69-0580—2 Fig. 8—Typical hookup for MABS II and MABS II-L Control Panels with T874D Thermostat/Q674B,D Subbases in multistage heating-cooling zone system. MABS II Control Panel shown; MABS II-L Control Panel hookup is the same. M1393A Y2 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. JUMPER RC, RH TOGETHER AND W[...]
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Page 6
6 Fig. 9—Typical hookup for MABS XX Control Panel with T874A Thermostat/Q674B,E Subbases in single- stage heating-cooling zone system. M1636 1 2 3 4 5 6 7 8 9 ADD-A- ZONE HEAT FAN COOL HEAT FAN COOL HEAT FAN COOL YW G G h 456 Z DAMPER ACTUATOR 12 3X L1 (HOT) L2 1 MABS XX CONTROL PANEL 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTI[...]
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Page 7
r[...]
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Page 8
Settings[...]
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Page 9
9 69-0580—2 Checkout TABLE 5—SYSTEM SET-UP FOR THERMOSTAT CHECKOUT. Heating Cooling Control Zones Other Zones Other Panel Zone 1 Than Zone 1 Zone 1 Than Zone 1 Mini-zone Set thermostat Move the heating set Set thermostat Move the cooling set MABS II system switch to point lever 10 ° F system switch to point lever 10 ° F MABS II-L HEAT; set fa[...]
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Page 10
Fig. 14—Thermometer calibration. Calibration THERMOSTAT T874 thermostats are accurately calibrated at the factory. They do not have provision for field calibration. THERMOMETER The thermometer in your thermostat has been accu- rately calibrated at the factory. The thermometer should only need adjustment if it has been dropped or shifted due to mi[...]