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Фрагмент инструкции
Further reference is made to the current edition of the American National Standard “Installation of Gas Appliances and Gas Piping,” Z21.30. Model 394 Gas Furnaces are shipped from the factory completely assembled and wired ready for indoor heating installation. They are manufactured with two types of blowers: belt and direct drive. The four smaller sizes, 50, 80, 100, and 125, are direct drive only. All sizes incorporate a low-voltage terminal strip for convenience of field wiring (except 50,000-Btuh unit with complete shut-off gas controls.) This publication covers installation, startup and maintenance. For accessory installation details, refer to applicable installation literature. CAUTION: Do not install furnace in a corrosive or contaminated almosphcre. Make sure tliat all local ordinance's for combustion and circulating air supply are observed. The design of the 394B&D Upflow Gas-Fired Furnaces is A.G.A. certified for installation on combustible flooring in alcoves, basements, closets, or utility rooms. CLEARANCE REQUIREMENTS (in inches) Sides......................................................................................1 Back......................................................................................0 Top of Plenum...................................................................1 Vent Connector (single wall).........................................6 Type B (double wall)..................................................1 Front......................................................................................6 Provide service clearance of 30 in. at front of unit. Bryant Automatic Gas Control Valve NOTE: On units equipped with an A-643 Bryant automatic gas control valve, there are three positions for the manual valve knob (OFF-PILOT-ON). There is a position stop at the PILOT position. To move the manual valve knob from the PILOT position to either ON or OFF position, the manual valve knob must be depressed. Cancels: 39394D82 Series A Sizes 050 thru 200 39394DP85 11/1/74 A72548 Figure 1—Model 394D If not already checked when lighting the main burner, check the proper operation of this valve by moving the room thermostat pointer above and below room temperature and observing that the main burners light on call for heat and go off when the pointer is moved below the room temperature setting. All Bryant automatic gas control valves have a delay when opening or closing. Fan/Limit Control Operation At the moment the thermostat calls for heat, the time delay mechanism of the control is energized. If, due to pilot outage, the control bimetal element does not sense a temperature change, the control will turn on the blower strictly by means of the time delay feature. If for any reason the time delay is not energized as the thermostat calls for heat, the control bimetal element will bring on the blower when it senses a temperature rise of 50 degrees Fahrenheit (standard differential) above the turn-off setting. During the blow-down period and after the thermostat is satisfied, the control will turn the blower off at the indicated setting sensed by the control bimetal element. A72591 Figure 2—DIMENSIONAL DRAWING TABLE I—DIMENSIONS IN INCHES MODEL & SIZE A C D E F G H Vent Día 394D-000050 12 46-3/16 10-3/8 9-1/2 14-1/2 27-1/8 32-9/16 4 394D-024050 12 46-3/16 10-3/8 9-1/2 14-1/2 27-1/8 32-9/16 4 394D-000080 14-3/16 46-3/16 12-9/16 11-11/16 14-1/2 27-1/8 32-9/16 4 394D-024080 14-3/16 46-3/16 12-9/16 11-11/16 14-1/2 27-1/8 32-9/16 4 394D-036080 14-3/16 46-3/16 12-9/16 11-11/16 14-1/2 27-1/8 32-9/16 4 394D-000100 17-1/2 46-3/16 15-7/8 15 14-1/2 27-1/8 32-9/16 5 394D-036100 17-1/2 46-3/16 15-7/8 15 14-1/2 27-1/8 32-9/16 5 394D-048100 21 46-3/16 19-5/16 18-1/2 14-1/2 27-1/8 32-9/16 5 394D-000125 21 46-3/16 19-5/16 18-1/2 14-1/2 27-1/8 32-9/16 5 394D-036125 21 46-3/16 19-5/16 18-1/2 14-1/2 27-1/8 32-9/16 5 394D-048125 21 46-3/16 19-5/16 18-1/2 14-1/2 27-1/8 32-9/16 5 394D-060125 21 46-3/16 19-5/16 18-1/2 14-1/2 27-1/8 32-9/16 5 394D-000150 24-1/2 46-3/16 22-7/8 21 14-1/2 27-1/8 32-9/16 6 394D-048150 24-1/2 46-3/16 22-7/8 21 14-1/2 27-1/8 32-9/16 6 394D-060150 24-1/2 49 22-7/8 21 18 29-15/16 35-3/8 6 394B-060150 24-1/2 49 22-7/8 21 18 29-15/16 35-3/8 6 394D-060175 31-1/2 49 29-7/8 29 18 29-15/16 35-3/8 7 394B-060175 31-1/2 49 29-7/8 29 18 29-15/16 35-3/8 7 394B-060200 31-1/2 49 29-7/8 ' 29 18 29-15/16 35-3/8 7 TABLE II—RATINGS AND PERFORMANCE* MODEL NATURAL and LP Temp Rise Range Heating Cooling Input Btuh Output Btuh Ext Static Pressure CFM Ext Static Pressure CFM 394D-000050 50,000 40,000 70-100 0.12 408 — — 394D-024050 45-100 482 0.5 780 394D-000080 80,000 64,000 70-100 0.12 654 — — 394D-024080 70-100 772 0.5 790 394D-036080 45-100 772 1190 394D-000100 100,000 80,000 70-100 0.15 818 — — 394D-036100 45-100 965 0.5 1200 394D-048100 45-75 1157 1540 394D-000125 125,000 ' 100,000 70-100 0.2 1020 — — 394D-036125 70-100 1069...
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