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Troubleshooting
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Summary of Contents for Bard I36Z1
- Page 1 I-TEC SERIES PACKAGED HEAT PUMP INSTALLATION INSTRUCTIONS Models: I36Z1 I48Z1 I60Z1 MIS-3116 Bard Manufacturing Company, Inc. Manual: 2100-578B Supersedes: 2100-578A Bryan, Ohio 43506 File: Vol. II Tab 14 Since 1914 . . . Moving ahead, just as planned. Date: 05-16-13...
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Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications tart Up For more information, contact these publishers: ... 3 R-410A Refrigerant Required ......... 26 General ................. 4 Topping Off System Charge ........... 26 ANSI Z535.5 Definitions..........4 Safety Practices.............. 26 Description of Standard Equipment ........ 26 I-TEC General Information Important Installer Note .......... -
Page 3: Getting Other Information And Publications
GETTING OTHER INFORMATION AND PUBLICATIONS FOR MORE INFORMATION, CONTACT These publications can help you install the air conditioner or heat pump. You can usually find these THESE PUBLISHERS: at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard. -
Page 4: General
See Page 3 for information on codes and standards. Size of unit for a proposed installation should be The I-TEC must be installed with the Bard based on heat loss or heat gain calculation made manufactured IWS wall sleeve and ILG louver according to methods of Air Conditioning Contractors grille accessories. -
Page 5: I-Tec Model Nomenclature
X - None 2 - Phenolic Coated OD Coil A - Letter Assigned as Req'd. 3 - Phenolic Coated ID & OD Coil TABLE 1 FACTORY BUILT-IN ELECTRIC HEAT TABLE I48Z1-B I48Z1-C Models I36Z1-A I36Z1-B I36Z1-C I48Z1-A I60Z1-A I60Z1-B I60Z1-C 240V-1 208V-1... -
Page 6: Table 2 Elec. Specifications
Ampacity Circuits Ckt. Brkr. Size Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B I36Z1-A0Z 230/208-1 1 or 2 1 or 2 I36Z1-B0Z 230/208-3 I36Z1-C0Z 460-3 I48Z1-A0Z 1 or 2... -
Page 7: Figure 1 Unit Dimensions
Manual 2100-578B Page 7 of 41... -
Page 8: Center Of Gravity
FLOOR TO CENTER FLOOR TO CENTER DOOR TO CENTER TO CENTER CRV & ERV NO VENT Unit Tested "X" Dimension "Y" Dimension "Z" Dimension "Z" Dimension I36Z1-A, B 13½" 31" 43½" 47" I36Z1-C 13½" 31½" 43½" 47" I48Z1-A, B 13½"... -
Page 9: Shipping Damage
SHIPPING DAMAGE HANDLING UNIT AFTER REMOVAL FROM SKID If a wide and tall opening exists, the I-TEC can be moved as a Upon receipt of equipment, the unit should be checked complete assembled unit. If not, use the following directions for for external signs of shipping damage. -
Page 10: Required Steps After Final Placement
REQUIRED STEPS AFTER FINAL PLACEMENT SECURING UNIT TO STRUCTURE The compressor is secured to the base with two (2) bolts Shipped with the I-TEC unit is a wall mounting bracket for shipping. Although the unit will perform as designed (screwed to shipping skid on backside of unit). This bracket with the shipping bolts in place, there may be noticeable can be utilized to secure the top portion of the unit to the additional noise and vibration noted. -
Page 11: Bracket Wall Sect. View & Wood Framed Install
Wall Section View BRACKET WALL SECTION VIEW Optional Duct Outside Ceiling Optional Top Wall 3" Bracket " (4) optional Unit Mounting holes Optional Telescoping " 20 " 6" Trim or Wall Sleeve** Supply Duct Sleeve Mounting Hole Locations Centered on Centered Opening Outside... -
Page 12: Figure 3 Compressor Shipping Bolts
FIGURE 3 COMPRESSOR SHIPPING BOLTS COMPRESSOR SHIPPING BOLT COMPRESSOR SHIPPING BOLT FIGURE 4 REMOVAL OF AIR DUCT AIR DUCT Manual 2100-578B Page 12 of 41... -
Page 13: Figure 5A Ducted Application
FIGURE 5A DUCTED APPLICATION – BASIC UNIT FIELD SUPPLIED DUCT BOTTOM OF ROOF TURNING VANES OR FIXED CEILING RECOMMENDED 12" SUSPENDED 20" CEILING MINIMUM MINIMUM 4" MINIMUM FROM TOP OF UNIT TO DUCT BOTTOM 9'-2" 9'-7" MINIMUM MINIMUM CLEARANCE 7'-9 3/4" REQUIRED RECOMMENDED TO UNIT HEIGHT... -
Page 14: Figure 5C 6" Riser Application
FIGURE 5C 6" RISER APPLICATION FIELD SUPPLIED DUCT BOTTOM OF ROOF TURNING VANES OR FIXED CEILING RECOMMENDED 12" SUSPENDED 20" CEILING MINIMUM MINIMUM 4" MINIMUM FROM TOP OF UNIT TO DUCT BOTTOM 10'-1" MINIMUM CLEARANCE 7'-9 3/4" 9'-8" RECOMMENDED TO UNIT HEIGHT MINIMUM BOTTOM OF ROOF... -
Page 15: Figure 5D Req'd. Clearances & Rec. Access
FIGURE 5D REQUIRED CLEARANCES & RECOMMENDED ACCESS WING WALL CONSTRUCTION TOP VIEW 12" MIN. 61 1/2" 12" MIN. CLOSET CONSTRUCTION TOP VIEW 61 1/2" 31 3/8" 12" 12" MIN. MIN. 12" MIN. 12" MIN. RECOMMENDED SERVICE ACCESS DIMENSIONS 12" MIN. 12"... -
Page 16: Duct Work
DUCT WORK The unit is equipped with a variable speed indoor blower motor which increases in speed with an increase Any heat pump is more critical of proper operating in duct static pressure. The unit will therefore deliver charge and an adequate duct system than a straight air proper rated airflow up to the maximum ESP shown conditioning unit. -
Page 17: Condensate Drain
WITH NO VENT OPTION CONDENSATE DRAIN To remove the drain access panels in the rear of this There are two condensate drain connections from the section, simply remove the front door/cover from the condenser drain pan (compressor area). These are box. -
Page 18: Figures 9A & 9B Unit Mounting
FIGURE 9A UNIT MOUNTING Use (12) Field Supplied Concrete Use (12) 3/4" Long IMPORTANT! or Wood Screws to Secure Outer Self Tapping Screws REF. Sleeve to Structure. Apply Caulk bead to to Attach Inner Sleeve entire perimeter seam IMPORTANT! to Unit Back between inner and Apply liberal amount outer sleeve. - Page 19 FIGURE 9B UNIT MOUNTING INSIDE WALL (SIZE VARIES) OUTSIDE WALL (INSULATED) AREA BETWEEN WALL AND SLEEVE (INSULATED) OUTDOOR GRILLE UNIT SLEEVE FILL INSULATION DRAIN AREA INTERIOR FLOOR (INSULATED WITH 6" BATT MATERIAL) MIS-3201 A NOTICE: In order to achieve optimum sound reduction, the following areas need insulated: 1.
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Page 20: Installation Instructions
INSTALLATION INSTRUCTIONS MOUNTING THE UNIT WIRING – MAIN POWER Refer to the unit rating plate and/or Table 2 for wire sizing The wall sleeve is attached to the I-TEC unit from the information and maximum fuse or “HACR Type” circuit outside of the building. -
Page 21: Wiring - Low Voltage Wiring
“W2” terminal is first stage electric heat (if equipped). WIRING – LOW VOLTAGE WIRING First stage electric heat can be operated simultaneously 230/208V, 1 PHASE AND 3 PHASE EQUIPMENT with the heat pump operating. DUAL PRIMARY VOLTAGE TRANSFORMERS. “A” terminal is the ventilation input. This terminal All Equipment leaves the factory wired on 240V tap. -
Page 22: Figure 11 Basic Heat Pump W/No Vent Pkg
BASIC HEAT PUMP WITH NO VENTILATION PACKAGE Completestat Model #CS9B-THO or Model #CS9BE-THO W1/E Thermostat W1/E YO/D Bard #8403-060 B/W1 Voltage Term. Strip Factory installed jumper. Remove jumper and connect to N.C fire alarm Not needed below 15KW MIS-3203 Manual 2100-578B... -
Page 23: Control
FIGURE 12 HEAT PUMP WITH CRV, WITHOUT CO CONTROL Completestat Model #CS9B-THO or Model #CS9BE-THO W1/E Thermostat W1/E YO/D Bard #8403-060 B/W1 Voltage Term. Strip RED/WHITE BLACK/WHITE ORANGE BROWN/WHITE CRV Wiring Harness Factory installed jumper. Remove jumper and connect Connect to "G" terminal when thermostat has "Occupancy Signal". -
Page 24: Control
FIGURE 13 HEAT PUMP WITH CRV AND CO CONTROL Completestat Model #CS9B-THO or Model #CS9BE-THO W1/E NOTE: Bard 8403-060 thermostat must be in programmed Thermostat W1/E YO/D operation mode and Bard #8403-060 in programmed fan mode for ventilation to function. -
Page 25: Start Up
7. Never fill cylinders over 80% of total capacity. TOPPING OFF SYSTEM CHARGE 8. Store cylinders in a cool area, out of direct If a leak has occurred in the system, Bard sunlight. Manufacturing recommends reclaiming, evacuating (see 9. Never heat cylinders above 125°F. -
Page 26: R-410A Refrigerant Required
START UP DESCRIPTION OF STANDARD However, three phase compressors will rotate in either direction depending upon phasing of the power. Since EQUIPMENT there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, Solid State Electronic Heat Pump Control Provides efficient 30, 60 or 90-minute defrost cycle. -
Page 27: Sequence Of Operation
PRESSURE SERVICE PORTS SEQUENCE OF OPERATION COOLING PART LOAD – Circuit R-Y1 makes at High and low pressure service ports are installed on all units so that the system operating pressures can be thermostat pulling in compressor contactor, starting the compressor and outdoor motor. -
Page 28: Figure 14 Defrost Cycle
DEFROST CYCLE There is an initiate defrost jumper (sen jump) on the control that can be used at any outdoor ambient during The defrost cycle is controlled by temperature and time the heating cycle to simulate a 0° coil temperature. on the solid state heat pump control. -
Page 29: I-Tec Commercial Room Ventilator System General Description
Bard The I-TEC Commercial Room Ventilator (CRV) is markets and recommends Bard Part #8403-060 designed to be used with all Bard I-TEC models. The programmable electronic thermostat. only intent of this device is to provide the required 2. -
Page 30: Figure 15 Crv Motor Speed/Cfm Configuration
FIGURE 15 CRV MOTOR SPEED/CFM CONFIGURATION VENT OPTION INTAKE/EXHAUST SPEEDS WIRE COLOR SPEED NOM. CFM BLACK BLUE MED-HI ORANGE MED-LO TO CHANGE SPEEDS, MOVE BROWN WIRE WITH WHITE TRACE. 7961-755-2 BLACK BROWN/WHITE BLUE MED. HI ORANGE MED. LO Move brown/white wire to corresponding motor speed for required ventilation CFM. -
Page 31: Figure 16 Crv Speed Change Terminal Access
FIGURE 16 CRV SPEED CHANGE TERMINAL ACCESS CRV INTAKE BLOWER NOTE: CRV EXHAUST BLOWER IS BEHIND INTAKE BLOWER REMOVE (9) SCREWS FROM CRV DOOR TO ACCESS CRV COMPONENTS BLOWER SPEED CONTROL LOCATION MIS-3207 A BLOWER REMOVED BLOWER FOR CLARITY SPEED CONTROL Manual 2100-578B... -
Page 32: Figure 17 Ventilation Airflow Diagram
FIGURE 17 VENTILATION AIRFLOW DIAGRAM Supply Air SUPPLY BLOWER Return Air Outdoor Air VENT INTAKE BLOWER VENT EXHAUST BLOWER Indoor Air MIS-3208 Manual 2100-578B Page 32 of 41... -
Page 33: Annual Maintenance
ANNUAL MAINTENANCE 3. Rinse wheel thoroughly after application of the cleaning solution, and allow to drain before 1. Inspect and conduct the same procedures as reinstalling. outlined under Quarterly Maintenance. 4. No re-lubrication is required to heat wheel bearings 2. To maintain peak latent (moisture) removal of the drive motor, or to the intake and exhaust capacity, it is recommended that the energy blower motors. -
Page 34: Troubleshooting
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL NOTE: If there was no power to 24 volt transformer, TROUBLESHOOTING PROCEDURE the compressor and outdoor fan motor will not start for 5 minutes. This is because of 1. NOTE: A thorough understanding of the defrost the compressor short cycle protection. -
Page 35: Checking Temperature Sensor
CHECKING TEMPERATURE SENSOR 4. If sensor resistance reads very low, then sensor is shorted and will not allow proper operation of the 1. Disconnect temperature sensor from board and heat pump control. from right-hand outdoor coil. 5. If sensor is out of tolerance, shorted, open, or reads 2. -
Page 36: Troubleshooting Ecm™ 142R Motor
VENT OPTION INTAKE/EXHAUST SPEEDS WIRE COLOR SPEED NOM. CFM BLACK 1. In normal operation, this motor may rock back and c. The Bard I-TEC is equipped with a low BLUE MED-HI MED. HI 1.794 ambient control pressure switch. This pressure forth on start up. -
Page 37: Replacing The Motor
TROUBLESHOOTING ECM ™ 142R OUTDOOR FAN MOTOR • Line power is connected as follows: NOTE: A combination of the “Yellow”, “White” “Red Wire” connects to “L1” and “Orange” wires being energized (with “Black Wire” connects to “L2” 24V “R” signal) determines five (5) different “Green/Yellow Wire”... -
Page 38: Troubleshooting Indoor Ecm™ Motor
TROUBLESHOOTING INDOOR ECM ™ BLOWER MOTORS CAUTION: Symptom Cause/Procedure Disconnect power from unit before removing or replacing • Check for loose blower housing, panels, etc. • Noisy blower or cabinet connectors, or servicing motor. To avoid electric shock from • High static creating high blower speed? - Check for air whistling through seams in the motor’s capacitors, disconnect power and wait at least 5 ducts, cabinets or panels... -
Page 39: Figure 18 Control Disassembly
TROUBLESHOOTING INDOOR ECM ™ BLOWER MOTORS (Cont’d.) Replacing ECM Control Module 7. Verify that the replacement control is correct for your application. Refer to the manufacturer’s authorized replacement list. USING THE To replace the control module for the GE variable-speed indoor blower WRONG CONTROL WILL RESULT IN IMPROPER OR NO motor you need to take the following steps: BLOWER OPERATION. -
Page 40: Figure 21 Control Connector Motor Half
TROUBLESHOOTING ECM ™ BLOWER MOTORS (Cont’d.) Part Full Heat Pump Continuous Dehum. Heat Pump MODE of Part Load Full Load Load Load Full Load w/ Emergency Blower Mode Full Load w/ OPERATION Cooling Cooling Heat Heat 1st Bank of 1st & 2nd Bank Heat Mode (Ventilation (when... -
Page 41: Table 10A Pressures: Full Load Cooling I36Z-I60Z
105° 110° 115° 120° 125° 75° DB Low Side 62° WB High Side 80° DB Low Side I36Z1 67° WB High Side 85° DB Low Side 72° WB High Side 75° DB Low Side 62° WB High Side 80° DB...
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