Bard W24G2DA Installation Instructions Manual

Contents

Bard W24G2DA Installation Instructions Manual Manual pdf 3 page image

Manual 2100-592CPage 3 of 69FIGURESFigure 1 Unit Dimensions .................................. 9Figure 2 Mounting Instructions – W24G-36G ..... 12Figure 2A Mounting Instructions – W42G-60G ..... 13Figure 3 Combustible Clearance – W24G-36G ... 14Figure 3A Combustible Clearance – W42G-60G.... 14Figure 4 Wall Mounting Instructions .................. 15Figure 5 Wall Mounting Instructions .................. 15Figure 6 Common Wall Mounting Installations .... 16Figure 7 Location of Vent Terminal in Shipping .. 17Figure 8 Vent Terminal and CombustionAir Intake .......................................... 18Figure 9 Fresh Air Damper ............................... 19Figure 10 Installation of Flexible Conduit ............ 21Figure 11A Thermostat Connection usingCombination Temperature andHumidity Controller ............................ 23Figure 11B Thermostat Using SeparateTemperature and Humidity Controllers .. 24Figure 11C MFAD, Classroom Ventilation Springand Power and ERV Low VoltageConnections ....................................... 25Figure 11D Economizer Low Voltage Connections ... 25Figure 12 Gas Pipe Connection........................... 26Figure 13 Proper Piping Practice ........................ 27Figure 14 Access Internal Filter ThroughUpper Service Door............................. 34Figure 15 Lighting and Shutdown InstructionLabel ................................................ 36Figure 16 Top View of Gas Control ...................... 37Figure 17 Sequence of Operation – ElectronicBlower Control ................................... 40Figure 18 Furnace Control Board andBlower Control ................................... 41Figure 19 Circuit Diagrams ................................ 50Figure 20 Fan Blade .......................................... 52Figure 21 Low NOx Insert .................................. 52TABLESTable 1 Specifications – W24G-36G Models ......... 7Table 1A Specifications – W42G-60G Models ......... 8Table 2 Minimum Installation Clearances ........... 17Table 3 Thermostat Wire Size............................ 22Table 4A Wall Thermostat ................................... 22Table 4B Humidistat .......................................... 22Table 5 Length of Standard Pipe Threads ........... 27Table 6 Gas Pipe Sizes – Natural Gas ................ 27Table 7 Natural Gas Derate Capacitiesfor All Models ...................................... 30Table 8 Natural Gas Orifice Tables – W24G-36G ... 31Table 8A Natural Gas Orifice Tables – W42G-60G . 32Table 9 Motor Speed Taps ................................ 41Table 10 W24G Indoor Blower Performance ......... 42Table 11 W30G Indoor Blower Performance ......... 43Table 12 W36G Indoor Blower Performance ......... 44Table 13 W42G Indoor Blower Performance ........ 45Table 14 W48G Indoor Blower Performance ......... 46Table 15 W60G Indoor Blower Performance ......... 47Table 16 Integrated Furnace and BlowerControl Operation ................................. 48Table 17 Dehumidification Relay Logic Board ....... 49Table 18 Refrigerant Charge-Pressure Tables ........ 51Table 19 Fan Blade Dimension ........................... 52Page Page