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Anleitung Zusammenfassung
This can ignite a gas leak, resulting in fire or explosion. Figure 5.1: Gas Connection to Boiler 8. Disconnect the boiler and its individual shut-off valve from the gas supply piping system during any pressure testing of that system at test pressure in excess of 1/2 psig (3.5 kPa). CAUTION Do not subject the gas valve to more than 1/2 psi (3.5 kPa) pressure. Doing so may damage the valve. Isolate the boiler from the gas supply piping system by closing its individual service valve during any pressure testing of the gas supply piping system at test pressure equal to or less than 1/2 psig (3.5 kPa). 9. Minimum permissible supply pressure for purposes of input adjustment: Natural Gas 5.0. W.C. (1.2 kPa) LP Gas 11.0. W.C. (2.7 kPa) Maximum permissible supply pressure to the boiler (Inches Water Column): Natural Gas 13.5. W.C. (3.4 kPa) LP Gas 13.5. W.C. (3.4 kPa) GAS PIPING Table 5.1: Natural Gas Model Input (Cubic Ft/Hr) Input (Cubic Meter/Hr) DE-03 70 2.0 DE-04 105 3.0 DE-05 140 4.0 DE-06 165 4.7 Based on 1000 Btu/Cubic Ft. Table 5.2: LP Gas Model Input (Cubic Ft/Hr) Input (Cubic Meter/Hr) DE-03 28 0.8 DE-04 42 1.2 DE-05 56 1.6 DE-06 66 1.9 Based on 2500 Btu/Cubic Ft. Table 5.3: Pipe Capacity Capacity of pipe of different diameters and lengths in cubic feet per hour [cubic meter per hour] with a pressure drop of 0.3 inches of water [75 kPa] and a specific gravity of 0.60. No allowance for an ordinary number of fittings is required. Pipe Length in Feet [Meters] .... .. Pipe 1. .. Pipe 1.... .. Pipe 1.... .. Pipe 10 [3.0] 20 [6.1] 30 [9.1] 40 [12.2] 50 [15.2] 60 [18.3] 278 [7.9] 190 [5.4] 152 [4.3] 130 [3.7] 115 [3.3] 105 [3.0] 520 [14.7] 350 [9.9] 285 [8.1] 245 [6.9] 215 [6.1] 195 [5.5] 1050 [29.7] 730 [20.7] 590 [16.7] 500 [14.2] 440 [12.5] 400 [11.3] 1600 [45.3] 1100[ 31.1] 890 [25.2] 760 [21.5] 670 [19.0] 610 [17.3] Maximum Capacity Correction Factors for Specific Gravity other than 0.60. Specific Gravity 0.50 0.55 0.60 0.65 0.70 0.75 Correction Factor 1.10 1.04 1.00 0.96 0.93 0.90 Specific Gravity 0.80 0.85 0.90 1.00 1.10 1.20 Correction Factor 0.87 0.84 0.82 0.78 0.74 0.71 Specific Gravity 1.30 1.40 1.50 1.60 1.70 1.80 Correction Factor 0.68 0.66 0.63 0.61 0.59 0.58 18 A. WIRING 1. See Figure 6.1 for location of wiring and controls. Use Figure 6.2 to connect the boiler to a power supply and to connect components to the boiler. 2. Connect the boiler by a separate, permanently live electrical supply line with a fused switch. 3. Adjust the thermostat heat anticipator to 0.2 Amp. B. ZONED SYSTEM WIRING See Figure 6.4 for typical wiring with zone valves. See Figure 6.5 for typical wiring with zone circulators. When wiring a zoned heating system, follow all applicable codes, ordinances and regulations. C. CONTROLS 1. For proper location of controls and accessories refer to Figure 6.1 and Section 11. 2. See the attached control sheets for specific details regarding the installation of the various controls. 3. This boiler is supplied with safety devices in addition to the limit. For a description of these devices and how they work to ensure the safe operation of the boiler, see Section 7B. 4. If the circulator is mounted in the supply piping, provide longer wiring harness as required. ELECTRICAL 6. ELECTRICAL This unit when installed must be electrically grounded in accordance with the requirements of the authority having jurisdiction or, in the absence of such requirements, with the current edition of the National Electrical Code, ANSI/NFPA 70 and/or the Canadian Electrical Code, Part 1, CSA C22.1, Electrical Code. NOTICE Figure 6.1: Wiring, Controls and Safety Devices Install all electrical wiring in accordance with the National Electrical Code and local requirements. Do not power zone valves directly from the boiler transformer/relay. Doing so will greatly reduce the life of the transformer. Use a separate transformer sized to handle the total of all zone valve electrical loads. NOTICE ELECTRICAL ELECTRICAL Figure 6.2: Wiring and Connection Diagram D. SEQUENCE OF OPERATION 1. Thermostat calls for heat, energizes Control Relay (CR). 2. Control Relay (CR) energizes circulator. 3. Limit senses boiler water temperature. Prevents boiler operation until water temperature falls approximately 15°F (8°C) below the cut-out temperature. 4. Limit energizes Fan and Isolation Relay (IR). 5. Negative pressure induced by fan switches Pressure Switch, continuing power through closed contacts (IR-1) and flame roll-out switch. 6. Gas valve energizes. a. Igniter on. b. Pilot gas on, igniting pilot. 7. Pilot flame detected. a. Igniter off. b. Main gas on, igniting main burners. Note: If pilot flame is not detected within 30 seconds, the igniter is turned off for 30 seconds, and then turned back on. If the pilot is not detected within 30 seconds, the igniter and pilot gas are turned off for 5 minutes. The sequence then resumes at Step 6a. 8. Call for heat ends. a. Pilot and main gas off, extinguishing pilot and main burners. b. Fan ...