Allied Air 4AC16LT Installation And Maintenance Instructions Manual
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506467-01 Issue 1008 Page 1 The equipment covered in this manual is to be installed by trained and experienced service and installation technicians. Improper installation, modification, service, or use can cause electrical shock, fire, explosion, or other conditions which may cause personal injury, death, or property damage. Use appropriate safety gea
506467-01 Issue 1008 INSTALLATION Inspection of Shipment Upon receipt of equipment, carefully inspect it for possible shipping damage. If damage is found, it should be noted on the carrier’s freight bill. Take special care to examine the unit inside the carton if the carton is damaged. Any concealed damage discovered should be reported to the last carrier immediately, preferably in w
Allied Air 4AC16LT, 506467-01 Issue 1008 Electrical Wiring All field wiring must be done in accordance with the National Electrical Code (NEC) recommendations, Canadian Electrical Code (CEC) and CSA Standards, or local codes, where applicable. Page 3 Unit must be grounded in accordance with national and local codes. Failure to ground unit properly can result in personal injury or death. WARNING Figure 2 Slab Mounting Discharge Air Mounting Slab Ground Level Building Str ucture Refer to the furnace or blower coil installation instructions for additional wiring application diagrams and refer to unit rating plate for minimum circuit ampacity and maximum overcurrent
506467-01 Issue 1008 Placement Be aware that some localities are adopting sound ordinances based on how noisy the unit is at the neighbor’s home, not at the original installation. Install the unit as far as possible from the property line. When possible, do not install the unit directly outside a bedroom window. Glass has a verry high level of sound transmission. Figure 4
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 5 Outside Unit Placement and Installation Figure 4 Install unit away from windows Two 90° elbows installed in lineset will reduce lineset vibration copper-to-brass or copper-to-steel brazing) which are rated for use with R410A refrigerant. 4. Remove the Schrader core assemblies before brazing to protect them from dam
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 6 Figure 6 Refrigerant Line Sets: Transition from Vertical to Horizontal Anchored Heavy Nylon Wire Tie Wall Stud Metal Sleeve Vapor Line Wrapped in Armaflex – Liquid Line Wall Stud Automotive Muffler-Type Hanger Strap Liquid Line to Vapor Line Metal Sleeve Vapor Line Wrapped in Armaflex – Liquid Line Strap Liquid Line to Vapor Line Figure 7 Refrigerant Line Sets: Installing Vertical Runs (new construction shown) Outside Wall Wood Block Between Studs IMPORTANT: Refrigerant lines must not c
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 7 Flushing Existing Line Set and Indoor Coil This procedure should not be performed on systems which contain contaminants, such as compressor burn out. Flushing Procedure IMPORTANT: The line set and/or indoor coil must be flushed with at least the same amount of refrigerant that previously charged the system. Check the charge in the flushing cylinder before flushing the unit. 1. Remove existing R22 refrige
Allied Air 4AC16LT, 506467-01 Issue 1008 (It may be necessary to bypass the low pressure switches to ensure complete refrigerant evacuation.) When the low side system pressures reach 0 psig, close the suction line valve. Disconnect all power to the existing outdoor unit. Refer to the gauges after shutdown to confirm that the valves are not allowing refrigerant to flow back into the low side of the system. Disconnect the liquid and suction lines from the existing outdoor unit. 2. Remove the existing outdoor unit. Set the new R4
Allied Air 4AC16LT, 506467-01 Issue 1008 Manifold Gauge Set Manifold guage sets used with systems charged with R410A refrigerant must be capable of handling the higher system operating pressures. The gauges should be rated for use with pressures 1 - 800 on the high side and a low side of 30” vacuum to 250 psi with dampened speed to 500 psi. Gauge hoses must be rated for use at up to 800 psi of pressure with a 4000 psi burst rating. Liquid and Suction Line Service Valves The liquid line and suction line service valves (See Figure 11) and service ports are us
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 10 Leak Testing After the line set has been connected to the indoor and outdoor units, the line set connections and indoor unit must be checked for leaks. Figure 11 2. With both manifold valves closed, connect the cylin- der of R410A refrigerant. Open the valve on the R410A cylinder (vapor only). 3. Open the high pressure side of
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 11 of 22 of 222. Connect micron gauge. 3. Connect the vacuum pump (with vacuum gauge) to the center port of the manifold gauge set. 4. Open both manifold valves and start vacuum pump. 5. Evacuate the line set and indoor unit to a minimum of 500 microns or lower. During the early stages of evacuation, it is desirable to close the manifold
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 12 If the system is void of refrigerant, clean the system using the procedure described below. 1. Use dry nitrogen to pressurize the system and check for leaks. Repair leaks, if possible. 2. Evacuate the system to remove as much of the moisture as possible. 3. Use dry nitrogen to break the vacuum. 4. Evacuate the system again. 5. Weigh the appropriate amount of R410A refrigerant (listed on unit nameplate) into the system. 6. Monitor the system to determine the amo
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 13 2. Close manifold gauge set valves. Connect the center manifold hose to an upright cylinder of R410A. 3. If room temperature is below 70°F, set the room thermo- stat to call for heat. This will create the necessary load for properly charging the system in the cooling cycle. 4. Use a digital thermometer to record the outdoor ambi
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 14 6. Compare the approach value with those shown in Table 7. If the values do not agree with those provided in Table 7, add refrigerant to lower the approach temperature or recover refrigerant from the system to increase the approach temperature. Check Charge Using Normal Operating Pressures Use Table 8 to perform maintenance checks. Table 8 is not a procedure for charging the system. Minor variations in these pressures may be due to differences in insta
506467-01 Issue 1008 Page 15 Table 8 Normal Operating Pressures L = Liquid S = Suction Values provided above are typical pressures. Indoor unit matchup, indoor air quality, and indoor load will cause pressures to vary.
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 16 OPERATION Outdoor unit and indoor blower cycle on demand from the room thermostat. When the thermostat blower switch is moved to the ON position, the indoor blower operates continuously. System Diagnostic Module 4AC16LT units contain a diagnostic module for trouble- shooting air conditioning system failures. By monitoring and analyzing data from the compressor and thermostat demand,
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 17 Flash Codes Table 9 DEL sutatS noitpircseDtluaF noitamrofnIgnitoohselbuorT REWOP )neerG( rewopsaheludoMslanimreteludomtatneserpsiegatlovylppuS PIRT )deR( dnamedtatsomrehT ,tneserpsi1Ylangis rosserpmocehttub gninnurtonsi neposirotcetorprosserpmoC.1 erusserpdaehhgihrofkcehC* egatlovylppusrosserpmockcehC* nepositcennocsidrewoptinuroodtuO.2 neposi)s(esufrorekaerbtiucricrosserpmoC.3 tcatnocgnikamtonsirotcenno
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 18 Flash Codes (cont.) Table 10 DEL sutatS noitpircseDtluaF noitamrofnIgnitoohselbuorT TRELA )wolleY( hsalF 3edoC gnilcyCtrohS sirosserpmoC gninnur ylfeirbylno tnettimret nisilangisdnamedtatsomrehT.1 evitcefeddraoblortnocroyaleryaledemiT.2 ofni2edoChsalFotog,tneserphctiwserusserphgihfI.3 ofni1edoChsalFotog,tneserphct
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 19 Table 11 Miswired Module Troubleshooting noitacidnIeludoMderiwsiM noitcAgnitoohselbuorTdednemmoceR ,notonsiDELneerG .purewoptonseodeludom tneserpsiegatlovyfireV.detcennoc eraslanimreteludomCdnaRhtobfienimreteD rof61egapnonoitcesgniriWrewoPCAV42weiveR.slanimretCdnaRs'eludomta .gniriwCdnaR ,tnettimretniDELneerG ylnopusrewopeludom .snurrosserpmocnehw CdnaRs'eludomyfireV.esrevernideriweraslanimretYdnaRfienimreteD 61egapnonoitcesgniriWrewoPCAV42weiveR.ecruostnatsnocaevahslanimret
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 20 4. Check all wiring for loose connections. 5. Check for correct voltage at unit (with unit operating). 6. Check amp-draw on blower motor. Unit nameplate _________ Actual _________ Maintenance and service must be performed by a quali- fied installer or service agency. At the beginning of each cooling season, the system should be checked as follows: 1.
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 21 Start-Up and Performance Checklist Job Name _______________________________ Job No. ________________ Date ______________ Job Location _____________________________ City ___________________ State ______________ Installer _________________________________ City ___________________ State ______________ Unit Model No.______________ Serial No. ___________________ Service Technician ________________________________________ Nameplate Voltage ______________ Rated Load Ampacity ________ Compressor
Allied Air 4AC16LT, 506467-01 Issue 1008 Page 22 Figure 13 Wiring Diagram P/N 48440-002 OUTDOOR FAN FCH R S C H C F C EQUIPMENT GROUND HR1 L2 208-230/60/1 L1 K1-1 BLACK YELLOW RED RED C12 BLACK ORANGE B4 PURPLE K1 S4 S24 Y1 C S4 HIGH PRESSURE SWITCH S24 LOSS OF CHARGE SWITCH B1 GROUND LUG GROUND L2 L1 208-230/60/1 C Y1 TO 24 VAC POWER SOURCE 20 VA MINIMUM NEC CLASS 2 DUAL CAPACITOR RED COMPRESSOR CONTACTOR BLACK COMPRESSOR CRANKCASE HEATER (IF USED) PURPLE BLACK ORANGE YELLOW 1 SR Y2 R C L Y1 Y2 R C L Y1 R Y2 LT BLUE RED
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