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A S T O N L O W S I L L S E R I E S COMMERCIAL Water Source/Geothermal Heat Pump • R-410A Refrigerant • Commercial 0.75-6 Ton Installation Information Water Piping Connections Hot Water Connections Electrical Startup Procedures Troubleshooting Preventive Maintenance IM1012CGA 03/15...
ASTON LOW SILL SERIES INSTALLATION MANUAL Model Nomenclature 16-17 Model Type Vintage GCL – Aston Series * - Factory Use Only Low Sill Console Non-Standard Options SS – Standard Cabinet Configuration C – Chassis Only W – Chassis with Cabinet Air Coil Option S –...
ASTON LOW SILL SERIES INSTALLATION MANUAL General Installation Information Safety Considerations Water Piping The proper water flow must be provided to each unit whenever the WARNING: Before performing service or maintenance unit operates. To assure proper flow, use pressure/temperature operations on a system, turn off main power switches ports to determine the flow rate.
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ASTON LOW SILL SERIES INSTALLATION MANUAL Dimensional Data - Flat Top Cabinet GCLW09-18 Left Hand Cabinet Right Hand Cabinet FRONT SIDE Right return cabinet shown in dimensional views Overall Cabinet Grille Flat Top Configuration Grille Grille Grille Width Depth Height...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Dimensional Data - Slope Top Cabinet GCLS09-18 Right Hand Cabinet Left Hand Cabinet 80° SIDE FRONT Right return cabinet shown in dimensional views Overall Cabinet Grille Slope Top Configuration Grille Grille Grille Width Depth Height Length Width...
ASTON LOW SILL SERIES INSTALLATION MANUAL Dimensional Data - Chassis GCLC09-12 25.4 AIR FLOW WATER OUT 1/2 in. FPT 38.4 WATER IN 10.2 26.3 12.0 1/2 in. FPT BLOWER ACCESS PANEL COMPRESSOR ACCESS PANEL 21.7 17.6 CONDENSATE DRAIN CONNECTION GCLC15-18 33.1 AIR FLOW 42.7 33.6...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Dimensional Data - Controls Detail: Flat Top Chassis Left Return Right Return Blower Option Switch Control Panel (Remove For Access To Control Box) Control Panel (Remove For Access Blower Option Switch To Control Box) Wall Mount For Chassis w/Flat Top Cabinets Wall Mount For Chassis...
ASTON LOW SILL SERIES INSTALLATION MANUAL Installation Steps Step 1: Unpack Equipment and Inspect for Damage Step 2: Determine Equipment Location • Choose level flooring surface (Correctable with shims. Do not pitch towards drain.) • Location of wall support and fasteners required to secure chassis backplate. •...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Installation Steps cont. Step 4: Provide Water and Condensate Drain Connections • A two-pipe reverse return piping configuration is recommended as it equalizes the piping circuit lengths and delivers even water flow to each unit. A direct return piping configuration may be used, but it may be difficult to achieve and maintain proper water flow to the units.
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ASTON LOW SILL SERIES INSTALLATION MANUAL Installation Steps cont. Step 5: Provide Line Voltage Wiring • Check unit data plate located on control side of chassis for ampacity and fuse size. • Remove electrical knockouts from chassis backplate. • Run line voltage wiring through knockout and secure wiring to backplate or disconnect. Step 6: Chassis Installation •...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Installation Steps cont. Field Converting Console Chassis is normally configured with controls on right end and piping on left end (see Figure 3 top view). In this position panel number 1 would be positioned against wall or back plate. Unit may also be turned 180° against wall or back plate. In this position controls will be on left end and piping on right end panel number 2 would be positioned against wall or back plate.
ASTON LOW SILL SERIES INSTALLATION MANUAL System Cleaning and Flushing Figure 7: Flushing with Water Cleaning and Flushing Shutoff Valve Equipped Systems Prior to start up of any heat pump, the water circulating system must be cleaned and flushed of all dirt and debris. Return Runout If the system is equipped with water shutoff valves, the supply and return runouts must be connected together at each unit location (This will prevent the...
ASTON LOW SILL SERIES INSTALLATION MANUAL Open Loop Ground Water Systems Always maintain water pressure in the heat exchanger by placing water control valves at the outlet of the unit to prevent mineral precipitation. Use a closed, bladder-type expansion tank to minimize mineral formation due to air exposure. Ensure proper water flow through the unit by checking pressure drop across the heat exchanger and comparing it to the figures in unit capacity data tables in the specification catalog.
ASTON LOW SILL SERIES INSTALLATION MANUAL Electrical Connections General Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable. 208 Volt Operation All 208/230 units are factory wired for 230 volt operation.
ASTON LOW SILL SERIES INSTALLATION MANUAL Electrical Data Blower Total Compressor Rated Voltage Model Motor Unit Circ Fuse/ Voltage Min/Max HACR 115/60/1 104/127 12.5 50.0 11.5 208-230/60/1 187/253 21.0 10/15 265/60/1 238/292 22.0 10/15 115/60/1 104/127 14.8 50.0 11.0 13.4 208-230/60/1 187/253 25.0...
ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics CCM with Remote Thermostat - 208-230-265/60/1 Compressor Blue Unit Power Supply Ground Blower 208-230/60/1 or Motor 265-277/60/1 Handi - Box Tan (33) Black (31) White (28) Black (29) Black (27) Red (30) Red (32) Brown (26) Black...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics cont. CCM with Unit Mounted Thermostat - 208-230-265/60/1 Compressor Blue Unit Power Supply Ground Blower 208-230/60/1 or Motor 265-277/60/1 Handi - Box Tan (33) White (28) Brown (26) Black (31) Red (32) White (28) Black (29) Black...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics cont. Versatec with Remote Thermostat - 208-230-265/60/1 Compressor Blue Blower Motor Brn/Wht Unit Power Supply 208-230/60/1 or Black Ground 265-277/60/1 Tan (36) Handi - Box White (28) Black (29) Blower Speed Red (30) Switch High Black (31)
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ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics cont. Versatec with Unit Mounted Thermostat - 208-230-265/60/1 Compressor Blue Unit Power Supply Blower Black 208-230/60/1 or Motor Brn/Wht Ground 265-277/60/1 Tan (33) Handi - Box White (28) Black (29) Blower Speed Red (30) White (28) Switch...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics cont. CCM with ECM and Unit Mounted Thermostat - 208-230-265/60/1 Brown (26) Motor Compressor Blue Unit Power Supply Ground Motor 208-230/60/1 or 265-277/60/1 Module Green/Yellow Handi - Box Tan (33) Note 4 Black (31) Black Red (32)
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ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics cont. FX10 - ECM with Remote Stat - 208-230-265/60/1 Compressor Motor Unit Power Supply Motor 208-230/60/1 or Module Ground 265/60/1 Green/Yellow Handi - Box Note 6 Fan Speed Switch High Black White Black Black Blue 240V...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Wiring Schematics cont. Versatec Control Board Normal Mode Control Timing Table Versatec Logic Board Physical Layout Blower off delay 30 seconds Compressor on delay 10 seconds Blower Blower COM Compressor short cycle delay 5 minutes Minimum compressor on time 2 minutes (except for fault condition) CC Relay...
ASTON LOW SILL SERIES INSTALLATION MANUAL Controls Control General Description Application Display/Interface Protocol Thermostat Options CCM Control The CCM (Compressor control module) Residential and commercial Dial thermostat with Hi and None Unit Mounted Digital is a more reliable replacement for applications requiring minimal but Low blower speeds, and Dial Thermostat...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. The user selects either “Heat/Cool” or “Fan Only” on the mode Component Sequencing Delays switch, then either “High” or “Low” at the blower speed switch. The Components are sequenced and delayed for optimum temperature can be controlled by rotating the thermostat control knob.
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. Control Tables for Optional Versatec Microprocessor Logic Board DIP Switch Settings Switch SW1 - 1 Test - Selected timings sped up to facilitate troubleshooting Normal - Standard timings SW1 - 2 Loop - Closed loop freeze detection setting (15°F) Well - Open loop freeze detection setting (30°F) SW1 - 3 Commercial - Enables NS features when TA32U02 thermostat is used...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. Optional FX10 Control Emergency Shutdown A field-applied dry contact can be used to place the control into emergency shutdown mode. During this mode, all outputs on the board are disabled. Freeze Detection Limit Field selectable for 15°...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. Optional FX10 Microprocessor Standard Features • Anti Short Cycle and BAS Interface S Interface • High Pressure Protection • Low Pressure Protection • Freeze Detection • Loss Of Charge Detection • Random Start •...
ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. recognition delay period, the condition will be recognized as a fault. Sequence of Operation The freeze detection limit trip point will be factory set for 30°F and Power Fail Restart will be field selectable for 15°F by removing a jumper wire on BI-5. When the controller is first powered up, the outputs will be The freeze detection limit fault condition will be bypassed 2 minutes disabled for a random start delay.
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. Cooling Cycle Inputs and Outputs Configuration On a call for cooling, the blower enable output and accessory Field Selectable Options output 2 will turn on immediately after the random start delay timer Freeze Detection Limit Set Point (BI-5) has been satisfied.
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. FX10 User Interface (MUI) Physical Layout Power LED Alarm LED Up Arrow Right Arrow Escape (ESC) LED 1 Button Return Button LED 4 LED 8 Left Arrow Down Arrow Alarm LED - Indicates a Lock-Out or a bad Freeze Sensor LED 3 - On shows Fan running Power LED - Shows FX processor is operational LED 4 - On shows Reversing Valve in cool...
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ASTON LOW SILL SERIES INSTALLATION MANUAL Controls cont. MUI Menu Navigation for Single Compressor - Water-to-Air Maintenance MinClgSetpt 60.0 ºF MaxHtgSetpt 89.9 ºF W Coil LoLim1 30.0 ºF Press right arrow key W Coil LoLim2 15.0 ºF one time from TmpOccTime 120 min Maintenance Menu...
ASTON LOW SILL SERIES INSTALLATION MANUAL Unit Startup Notes Electrical Disconnect The hydronic loop controller is a microprocessor based control panel for control of water loop heat rejector (tower), heat supplier (boiler), Optional field installed console disconnect provides a permanent and/or water well pumps and circulation pumps.
ASTON LOW SILL SERIES INSTALLATION MANUAL Unit Startup Checklist/Unit Startup Steps Before Powering Unit, Check The Following: • High voltage is correct and matches nameplate. • Fuses, breakers and wire size correct. • Low voltage wiring complete. • Piping completed and water system cleaned and flushed. •...
ASTON LOW SILL SERIES INSTALLATION MANUAL Refrigerant Circuit Guideline Head Suction Compressor Air Temp. Water Temp. Symptom Superheat Subcooling Pressure Pressure Amp Draw Differential Differential Under Charged System (Possible Leak) High Over Charged System High High High Normal High Normal/Low Normal Low Air Flow Heating High...
ASTON LOW SILL SERIES INSTALLATION MANUAL DEALER: PHONE #: DATE: PROBLEM: MODEL #: Startup/Troubleshooting Form SERIAL #: COOLING CYCLE ANALYSIS SAT °F °F Unit Amp Draw: Loop: Open Closed Line Voltage: °F °F COIL SUCTION COMPRESSOR REVERSING COAX EXPANSION VALVE SOURCE VALVE DISCHARGE...
ASTON LOW SILL SERIES INSTALLATION MANUAL Preventive Maintenance Water Coil Maintenance The condensate drain can pick up lint and dirt, especially with dirty filters. Inspect twice a year to avoid the possibility of overflow. 1. Keep all air out of the water. An open loop system should be checked to ensure that the well head is not allowing air to Blower Motors infiltrate the water line.
ASTON LOW SILL SERIES INSTALLATION MANUAL Revision Guide Pages: Description: Date: 23-24, 43 Updated Wiring Schematics, Updated Service Parts Table 11 May 2015 Updated with All-Aluminum Air Coils 10 Mar 2014 First Published 11 Oct 2013...