Multi-tec/th-tune free cooling unit system
multi-tec wall-mount air conditioner/
th-tune single unit controller.
the th-tune can be used as a replacement for the lc6000
controller for operation when a single multi-tec unit is used. (26 pages)
CONTENTS Getting Other Information and Publications tart Up For more information, contact these publishers: ..3 R-410A Refrigerant Required ........28 General ................. 4 Topping Off System Charge ........... 28 ANSI Z535.5 Definitions ..........4 Safety Practices ............. 28 Description of Standard Equipment ....... 29 I-TEC General Information Important Installer Note ..........
GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the air FOR MORE INFORMATION, CONTACT conditioner or heat pump. You can usually find these at THESE PUBLISHERS: your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.
See Page 3 for information on codes and standards. The I-TEC must be installed with the Bard Size of unit for a proposed installation should be based manufactured IWS wall sleeve and ILG louver on heat loss or heat gain calculation made according to grille accessories.
I-TEC Series General Information I-TEC MODEL NOMENCLATURE CONTROLS MODEL COLOR OPTIONS SYSTEM TYPE: ELECTRIC HEAT X = 24V Terminal Block Only w/o SERIES X - Beige paint AIR CONDITIONING 0Z = No heat w/breaker CompleteStat 1 - White paint 04 = 4KW 1-Phase 1 = CompleteStat THO (Temp, 4 - Gray paint...
SHIPPING DAMAGE HANDLING UNIT AFTER REMOVAL FROM SKID Upon receipt of equipment, the unit should be checked If a wide and tall enough opening exists, the I-TEC can be for external signs of shipping damage. The skid must moved as a complete assembled unit. If not, it is designed remain attached until the unit is ready for installation.
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 (screwed to shipping skid on backside of unit). This designed with the shipping bolts in place, there may be a bracket can be utilized to secure the top portion of the noticeable additional noise and vibration noted.
DUCT WORK install (10'-5" with IRP3 riser & 10'-8" with IRP6 riser). It can be trimmed in the field for installations that All duct work must be properly sized for the design require less than 10'-2". airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to The unit is equipped with a variable speed indoor proper sizing.
CONDENSATE DRAIN WITH COMMERCIAL ROOM VENTILATOR 1. Open hinged front doors. There are two condensate drain connections from the condenser drain pan (compressor area). These are visible 2. Disconnect unit power to eliminate shock hazard. from the rear of the unit. Factory installed tubing 3.
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.
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FIGURE 9B UNIT MOUNTING INSIDE WALL (SIZE VARIES) OUTSIDE WALL FILL INSULATION OUTDOOR GRILLE I-TEC UNIT SLEEVE FILL INSULATION INTERIOR FLOOR MIS-2928 A Manual 2100-597 Page 19 of 52...
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.
WIRING – LOW VOLTAGE WIRING “A” terminal is the ventilation input. This terminal energizes any factory installed ventilation option. 230/208V, 1 PHASE AND 3 PHASE EQUIPMENT “W3” terminal is second stage electric heat. When DUAL PRIMARY VOLTAGE TRANSFORMERS. “W3” terminal is energized, it locks out compressor All Equipment leaves the factory wired on 240V tap.
BASIC AIR CONDITIONER 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 2 Not needed below 15KW Additional wire required for dehumidification models MIS-3257...
FIGURE 12 AIR CONDITIONER 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".
FIGURE 13 AIR CONDITIONER 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.
FIGURE 14 AIR CONDITIONER WITH ERV, WITHOUT 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.
FIGURE 15 AIR CONDITIONER WITH ERV AND CO CONTROL (ON/OFF CYCLING) 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.
FIGURE 16 AIR CONDITIONER WITH ERV AND CO CONTROL (FULLY MODULATING) 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.
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 Manufacturing sunlight. recommends reclaiming, evacuating (see criteria above), 9.
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 High / Low Pressure Switch way as to cause rotation in the reverse direction, verification of proper rotation must be made.
PRESSURE SERVICE PORTS SEQUENCE OF OPERATION COOLING PART LOAD – Circuit R-Y1 makes at High and low pressure service ports are installed on all thermostat pulling in compressor contactor, starting the units so that the system operating pressures can be observed.
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.
FIGURE 17 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 BLUE MED. HI BROWN/WHITE MED. LO ORANGE 7961-7554 Move brown/white wire to corresponding motor speed for required ventilation CFM.
CONTROL WIRING I-TEC ENERGY RECOVERY VENTILATOR SYSTEM The I-TEC ERV comes wired from the factory ready to operate in manual mode (ON/OFF cycling) and set to GENERAL DESCRIPTION 375 CFM of ventilation. Care must be taken when The I-TEC Energy Recovery Ventilator (ERV) was deciding how to control the operation of the ventilator.
For example, a Flow Index of thermostat to determine occupancy in the structure. 23 would be two long blinks, followed by 3 fast blinks of Bard markets the CS2000A for this use. the “GREEN STATUS LIGHT”. 7. On exhaust Motor Control Board, observing 3.
5.15 for you to program your CO2 control output voltages in 4.58 correlation to the CO2 levels you 4.06 wish to control when Bard Part # 8403-067 CO2 Control is applied. 2.91 2.57 2.24 1.74 0.96 0.77...
Manual adjust screw. Use when operating in manual mode (“M” jumper installed) along with the “GREEN SIGNAL LIGHT” to adjust to the required CFM of ventilation. CW rotation reduces the “FLOW INDEX”, CCW rotation increases the “FLOW INDEX”. CONFIGURING BARD PART #8403-067 CONTROL for ERV MODULATING CONTROL BARD PART #8403-067...
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CONFIGURING BARD PART #8403-067 EDITING MENU PARAMETERS CONTROL for ERV MODULATING Before any adjustment can be made to the transmitter, the Menu Lockout Jumper (PJ4) must be set to the “On” CONTROL (Continued) position (See Figure below). MOUNTING MENU LOCKOUT JUMPER 1.
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MENU DESCRIPTIONS high output range Sets the CO concentration for the highest Relay on set point output (20 mA, 5 VDC or 10 VDC). When Sets the CO concentration which the optional COH is set above COL, the transmitter is direct relay is energized.
MAINTENANCE the desiccant will not be lost in the washing process. GENERAL INFORMATION Proper cleaning of the Bard energy recovery wheel will restore latent effectiveness to near original performance. The ability to clean exposed surfaces within air moving systems is an important design consideration for the MAINTENANCE PROCEDURES maintenance of system performance and air quality.
3. Rinse wheel thoroughly after application of the ANNUAL MAINTENANCE 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 capac- of the drive motor, or to the intake and exhaust ity, it is recommended that the energy recovery blower motors.
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 from heat pump control. right-hand outdoor coil. 5. If sensor is out of tolerance, shorted, open, or reads 2.
SUPPLIES BEFORE SERVICING. 1. In normal operation, this motor may rock back and c. The Bard I-TEC is equipped with a low forth on start up. Do not replace if this is the only ambient control pressure switch. This pressure symptom identified.
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”...
TROUBLESHOOTING INDOOR ECM ™ BLOWER MOTORS CAUTION: Symptom Cause/Procedure Disconnect power from unit before removing or replacing • Noisy blower or cabinet • Check for loose blower housing, panels, etc. connectors, or servicing motor. To avoid electric shock • High static creating high blower speed? - Check for air whistling through seams in from the motor’s capacitors, disconnect power and wait at ducts, cabinets or panels...
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. To replace the control module for the GE variable-speed indoor blower USING THE WRONG CONTROL WILL RESULT IN motor you need to take the following steps: IMPROPER OR NO BLOWER OPERATION.
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