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Related Manuals for Bard SH431
Summary of Contents for Bard SH431
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE HEAT PUMPS Models: SH381 SH431 SH491 Manual : 2100-410B Bard Manufacturing Company Supersedes: 2100-410A Bryan, Ohio 43506 File: Volume III Tab 17 Since 1914..Moving ahead just as planned. Date: 02-24-04 © Copyright 2004...
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Page 2: Table Of Contents
CONTENTS Getting Other Informations and Publications Start Up Important Installer Note ......... 17 Wall Mount General Information Crankcase Heaters ..........17 Heat Pump Wall Mount Model Nomenclature ..2 High Pressure Switch ..........17 Shipping Damage ............ 5 Three Phase Scroll Compressor Start Up ..... 17 General .............. -
Page 3: Getting Other Informations And Publications
Getting Other Information and Publications These publications can help you install the air For more information, contact these conditioner or heat pump. You can usually find these at publishers: your local library or purchase them directly from the publisher. Be sure to consult current edition of each ACCA Air Conditioning Contractors of America standard. -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE MODEL NUMBER CONTROL – MODULES CAPACITY COIL OPTIONS 38 - 3 Ton X - Standard 43 - 3-1/2 Ton REVISIONS 1 - Phenolic Coated Evaporator 49 - 4 ton COLOR OPTIONS 2 - Phenolic Coated Condenser X - Beige (Standard) 3 - Phenolic Coated Evaporator... -
Page 5: Figure 1 Unit Dimensions
FIGURE 1 UNIT DIMENSIONS BACK VIEW FRONT VIEW SIDE VIEW... -
Page 6: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS & . t i - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -... -
Page 7: Shipping Damage
Any grille that meets with 5/8 inch louver criteria may Air Conditioning Contractors of America (ACCA). The be used. It is recommended that Bard Return Air Grille air duct should be installed in accordance with the Kit RG2 through RG5 or RFG2 through RFG5 be Standards of the National Fire Protection Association installed when no return duct is used. -
Page 8: Fresh Air Intake
The blank-off plate is available upon request from the FRESH AIR INTAKE factory and is installed in place of the fresh air damper All units are built with fresh air inlet slots punched in shipped with each unit. the service panel. If the unit is equipped with a fresh air damper assembly, CONDENSATE DRAIN –... -
Page 9: Installation Instructions
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION WARNING 1. Two holes for the supply and return air openings must be cut through the wall as shown in Figure 3. Failure to provide the 1/4 inch clearance 2. On wood frame walls, the wall construction must be between the supply duct and a combustible strong and rigid enough to carry the weight of the surface for the first 3 feet of duct can result in... -
Page 10: Figure 3 Mounting Instructions
FIGURE 4 MOUNTING INSTRUCTIONS DIMENSION CHART DIMENSION CHART Seal with bead of Top flashing detail view caulking along entire DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E" DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E" length of top. Attach supplied Required dimensions to Required dimensions to... -
Page 11: Figure 4 Electric Heat Clearance
FIGURE 4 ELECTRIC HEAT CLEARANCE SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1/4 INCH CLEARANCE TO COMBUSTIBLE SURFACES. MIS-277 WARNING A minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3 feet of ducting. -
Page 12: Figure 5 Wall Mounting Instructions
FIGURE 5 WALL MOUNTING INSTRUCTIONS WALL SEE FIGURE 4 – MOUNTING INSTRUCTIONS STRUCTURE FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR SUPPLY AIR SUPPLY AIR OPENING OPENING OPENING RETURN AIR RETURN AIR RETURN AIR OPENING OPENING OPENING BOTTOM MOUNTING BRACKET. -
Page 13: Figure 7 Common Wall Mounting Installations
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS FREE AIR FLOW NO DUCT DUCTED SUPPLY RETURN AT UNIT CLOSET INSTALLATION FALSE WALL INSTALLATION MIS-550 Manual 2100-410 Page... -
Page 14: Wiring - Main Power
WIRING – MAIN POWER FIGURE 8 UNIT 24V TERMINAL BOARD Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker size. Each outdoor unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. -
Page 15: Optional Outdoor Thermostat Applications
FIGURE 9 COMPRESSOR CUTOFF THERMOSTAT WIRING 4 – 10KW 1 PH – 6 & 9KW 3 PH MIS-409 FIGURE 10 COMPRESSOR CUTOFF THERMOSTAT WIRING 15 – 20KW 1 PH AND 3 PH MIS-409 TABLE 3 type of outdoor thermostat application is variable with geographic region and sizing of the heating equipment THERMOSTAT WIRE SIZE to the individual structure. -
Page 16: Figure 11 Electric Heat Hold-Off Wiring
efficiency by utilizing the heat pump to bring the ELECTRIC HEAT HOLD-OFF ( See Figures 11 conditioned space temperature up, rather than cycling and 12) on the electric heat due a second stage call for heat In other applications, it is desirable to disable the from the thermostat on start-up coming off a night set- operation of the electric heat until outdoor temperatures back condition or someone increasing the thermostat set... -
Page 17: Heat Anticipation
LOW VOLTAGE CONNECTIONS HEAT ANTICIPATION These units use a grounded 24 volt AC low voltage All of the thermostats shown in Table 4 have a fixed circuit. heat anticipator for stage 1 with no adjustment required. Stage 2 has an adjustable anticipator of the W2 The “R”... -
Page 18: Table 4 Wall Thermostat And Subbase Combinations
TABLE 4 WALL THERMOSTAT AND SUBBASE COMBINATIONS ; l o ; l o ; l o ; l o ; l o No automatic changeover position – must manually place in heat or cool. Reversing valve remains energized at all times system switch is in heat position (except during defrost cycle). -
Page 19: Figure 13 Start Up Procedure Decal
START UP IMPORTANT INSTALLER NOTE FIGURE 13 START UP LABEL For improved start up performance wash the indoor coil IMPORTANT with a dish washing detergent. THESE PROCEDURES MUST BE CRANKCASE HEATERS FOLLOWED AT INITIAL START UP SH491-B and -C are provided with compressor AND AT ANY TIME POWER HAS crankcase heat. -
Page 20: Phase Monitor
SEQUENCE OF OPERATION PHASE MONITOR COOLING – Circuit R-Y makes at thermostat pulling All units with three phase compressors are equipped in compressor contactor, starting the compressor and with a 3 phase line monitor to prevent compressor outdoor motor. The G (indoor motor) circuit is damage due to phase reversal. -
Page 21: Figure 14 Defrost Control Board
There is a cycle speed up jumper on the control. This DEFROST CYCLE can be used to reduce the time between defrost cycle The defrost cycle is controlled by temperature and time operation without waiting for time to elapse. on the solid state heat pump control. See Figure 14. Use a small screwdriver or other metallic object, or When the outdoor temperature is in the lower 40°... -
Page 22: Troubleshooting
TROUBLESHOOTING 3. Turn thermostat blower switch to auto position. SOLID STATE HEAT PUMP CONTROL TROUBLESHOOTING PROCEDURE Indoor blower should stop. 1. Turn on AC power supply to indoor and outdoor 4. Set system switch to heat or cool. Adjust thermostat units. -
Page 23: Checking Temperature Sensor Outside Unit Circuit
CHECKING TEMPERATURE SENSOR OUTSIDE 3. Check resistance reading to chart of resistance use sensor ambient temperature. (Tolerance of part is UNIT CIRCUIT ± 10%) 1. Disconnect temperature sensor from board and from 4. If sensor resistance reads very low, then sensor is outdoor coil. -
Page 24: Figure 15 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS TABLE 7 REFRIGERANT CHARGE Shown in Figure 15 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil. f r i Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. -
Page 25: Table 10 Indoor Blower Performance
INDOOR BLOWER PERFORMANCE – CFM 230V / 460V Subtract .08 static for 2” filter NOTE: SH431 and SH491 are shipped with NOTE: SH381 is shipped with the indoor the indoor blower on medium speed blower on low speed for free blow for free blow applications. -
Page 26: Pressure Tables
TABLE 11 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil °F Low side pressure ± 2 PSIG High side pressure ± 5 PSIG Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instruction.