CONTENTS Getting Other Information and Publications ..3 Service ..............26 Wall Mount General Information ......4 Troubleshooting Nidec SelecTech Series ECM Air Conditioner Wall Mount Model Nomenclature ..4 Motors ............... 26 Shipping Damage ..........4 If the Motor is Running ........26 General ...............
WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE – MODEL SERIES CONTROL MODULES J – LAC and Alarm Relay (ALR) CAPACITY COIL OPTIONS 42 – 3½ Ton X – Standard 48 – 4 Ton 60 – 5 Ton 72 –...
Duct Work FIGURE 1 Front Control Panel Cover All duct work, supply and return, must be properly sized for the design airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage.
FIGURE 4 FIGURE 7 Filter Tabs in Down Position Re-Install Filter Support Brackets into Upper Slots Upper slots for 1" filters Lower slots for 2" filters FIGURE 8 Install Right 1" Filter FIGURE 5 Bend Filter Tabs to Up Position FIGURE 6 Remove Four Screws FIGURE 9...
Fresh Air Intake All units are built with fresh air inlet louvers punched in the side grilles. If the unit is equipped with a fresh air damper assembly, the assembly is shipped already attached to the unit. The damper blade is locked in the closed position. To allow the damper to operate, remove the two (2) screws in the bottom of the blade (see Figure 10).
INSTALLATION Basic Installation Design and to the unit base. An opening is supplied towards the back of the unit base for the drain hose to pass Application Planning through, and the hose extends 1" to 2" below the unit Successful unit installations require proper planning base.
supply and/or return stub duct may be connected to the A metallic return air grille is required for non-ducted unit supply and return flanges before unit installation to applications. The spacing between louvers on the grille help with duct connections inside the structure. Supply shall not be larger than 5/8".
• Small straight (thermostat) screwdriver 3. Position the wall mount unit close to the wall surface where it will be installed. Install rain • Tape measure flashing at the top of the unit facing the wall by • Leveling device hooking the hem bend into the rear bend of the unit top (see Figure 13).
TABLE 2 Minimum Clearances Required to Combustible Materials Model Supply Air Duct (1st 3') Cabinet J42AC J48AC 1/4" 0" J60AC J72AC FIGURE 11 Vent Installation/Removal Clearance Required OBJECT OR WALL VENTS CAN BE INSTALLED FROM EITHER SIDE OF UNIT. 20.750 2.000 45.000 AVOID LOCATING UNIT DISCONNECT...
FIGURE 13 Mounting Instructions SEAL WITH BEAD UNITS REQUIRED DIMESIONS OF CAULKING ALONG REQUIRED DIMESIONS TO ENTIRE LENGTH OF MAINTAIN 1/4" MIN. CLEARANCE 30 1/2 10 1/2 6 1/4 1 1/4 29 3/4 16 1 7/8 TOP. FROM COMBUSTIBLE MATERIALS J42AC-J48AC RAIN FLASHING UNITS...
FIGURE 14 Electric Heat Clearance NOTE 1: SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1/4" CLEARANCE TO COMBUSTIBLE SURFACES. WARNING Fire hazard. Maintain minimum 1/4" clearance between the supply air duct and combustible materials in the first 3' of ducting.
FIGURE 15 Wall Mounting Instructions See Figure 13 Mounting Instructions FACTORY SUPPLIED RAIN FLASHING. WALL STRUCTURE MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR OPENING RETURN AIR OPENING WOOD OR STEEL SIDING BOTTOM MOUNTING BRACKET. MOUNT ON WALL BEFORE INSTALLING UNIT. CONCRETE BLOCK WALL INSTALLATION WOOD FRAME WALL INSTALLATION SIDE VIEW...
FIGURE 17 Common Wall Mounting Installations SUPPLY DUCT MAY BE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN RAIN RAIN FLASHING RAFTERS FLASHING RAFTERS FINISHED CEILING SURFACE SUPPLY AIR DUCT SUPPLY AIR DUCT FINISHED CEILING SURFACE W/ GRILLE RETURN AIR RETURN AIR OPENING W/ GRILLE...
Wiring – Main Power the number of field power circuits required for the various models with heaters. The unit rating plate lists Main electrical power must be supplied to the unit a “Maximum Time Delay Relay Fuse” or circuit breaker from a clean, reliable power source.
Wiring – Low Voltage Balanced Climate™ Feature (Standard on All Models) All units are equipped with the capability of running All 230/208V 1 phase and 3 phase equipment have in Balanced Climate mode. This mode is designed to dual primary voltage transformers. All equipment leaves enhance the comfort level by reducing the indoor airflow the factory wired on 240V tap.
TABLE 3 Wall Thermostats Part Number Predominate Features 8403-057 1 stage Cool, 1 stage Heat; Electronic Non-Programmable; Auto or Manual changeover (TH3110D1040) 8403-059 2 stage Cool, 2 stage Heat; Electronic Non-Programmable; HP or Conventional (Default: AC); Auto or Manual (TH5220D1219/U) changeover 8403-060 3 stage Cool;...
FIGURE 19 Programmable Thermostat Connections Completestat Model #CS9B-THO or Model #CS9BE-THO W1/E Thermostat W1/E YO/D Bard #8403-060 Optional CO2 Controller Bard Part #8403-067 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed.
FIGURE 20 Non-Programmable Thermostat Connections Units With Dehumidification 8403-038 8403-057 Mechanical Humidistat (TH311OD1040) or T4 Pro 8403-089 8403-058 (TH522OD1151) 8403-047 8403-059 (TH522OD1219/U) Electronic Humidistat or T6 Pro 8403-090 Optional CO2 Controller Bard Part #8403-067 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term.
START UP REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to ensure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction. These units require R-410A refrigerant and polyol ester oil.
Service Hints However, three phase compressors will rotate in either direction depending upon phasing of the power. 1. Caution owner/operator to maintain clean air filters Since there is a 50-50 chance of connecting power at all times and also not to needlessly close off in such a way as to cause rotation in the reverse supply and return air registers.
Vent Connection Plug High Pressure Detection LPC and HPC Status LEDs All units are equipped with a vent connection plug in Test Mode the side of the control panel for the different ventilation Brownout Protection with Adjustment packages to plug in to. If the compressor will not start Delay-on-Make Timer and there is no "Y1"...
Low Pressure Detection CC terminal energizes. The delay can be set to 500 milliseconds (A DIP switch), 1000 milliseconds (B DIP Low pressure switch monitoring allows for a lockout switch) or 1500 milliseconds (C DIP switch); time is condition in a situation where the switch is open. If not cumulative—only the longest setting will apply.
SERVICE Troubleshooting NIDEC SELECTECH D. Check the external static pressure (total of TROUBLESHOOTING GE X13-SERIES ECM2.3 ™ MOTORS both supply and return) to ensure it is within Series ECM Motors the range as listed on the unit serial plate. If If the Motor Is Running higher than allowed, additional duct work is NOTE: Bard Models PA13242;...
TROUBLESHOOTING GE X13-SERIES ECM2.3 ™ MOTORS CONT’D. 2. Initiate a demand from the thermostat and check the Model X13 Communication Diagnostics 2. If the motor has proper high voltage and ground at A. If the low voltage communication is not voltage between the common and the appropriate motor The X13 motor is communicated through 24 VAC low voltage the L/L1, G, N/L2 connections, then continue with...
Fan Blade Setting Dimensions R-410A Refrigerant Charge Shown in Figure 24 is the correct fan blade setting This unit was charged at the factory with the quantity of for proper air delivery across the outdoor coil. Refer to refrigerant listed on the serial plate. AHRI capacity and Table 7 for unit specific dimension.
TABLE 8 Cooling Pressure – Standard Airflow Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side J42AC 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side J48AC 80/67...
TABLE 9 Cooling Pressure – Balanced Climate Airflow Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side J42AC 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side J48AC 80/67...
TABLE 10 Electrical Specifications − J**AC Series Single Circuit Multiple Circuit Rated Minimum Maximum No. Field Volts Maximum Field Circuit External Fuse or Field Power Ground MODEL Power Minimum & Ampacity Ckt. Breaker Wire Size Wire Size External...
Setting Unit Airflow call for ventilation, electric heat or 2nd stage cooling from a 2-stage thermostat. At that time, the unit will The unit is set from the factory at the default speed. automatically activate a higher speed tap. Most units have three selectable cooling speed taps TROUBLESHOOTING GE X13-SERIES ECM2.3 ™...
Speed Tap 3 – Default LO Cooling & Heating Programmed blower speed taps are as follows (see also Figure 27): Speed tap 3 is programmed for rated speed in the Speed Tap 1: Vent/blower only speed SelecTech motor. This means that if speed tap 3 is energized, the airflow amount will be the default Speed Tap 2: Balanced Climate speed airflow.
TABLE 14 Maximum ESP of Operation Electric Heat Only Model J42AC, J48AC J60AC, J72AC Outlet FRONT FRONT Speed High High -A0Z -A05 -A10 -A15 -A20 -B0Z -B06 -B09 -B15 -B18 -C0Z -C09 -C15 Values shown are for units equipped with standard 1" throwaway filter or 1"...
TABLE 16 Vent and Control Options Part Number Description CMC-32 Start Kit (230V 1-Phase) CMA-39 LAC - On/Off FAD-NE5 Fresh Air Damper - No Exhaust ECONWD-5 Economizer - Bldg. Equipment, Enthalpy or Temperature Manual 2100-723 Page 36 of 39...
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