ASPT Service Manual
Table Of Contents
- IMPORTANT INFORMATION
- PRODUCT IDENTIFICATION
- Checking Voltage
- Checking Wiring
- Checking Thermostat And Wiring
- Thermostat Wiring
- Checking Transformer And Control Circuit
- Checking Contactor And/Or Relays
- Checking Contactor Contacts
- Checking Fan Relay Contacts
- Checking Loss Of Charge Protector (Heat Pump Models)
- Checking High Pressure Control
- Checking Low Pressure Control
- Copeland Comfort Alert™ Diagnostics - 3-Wire module
- Copeland Coresense™ Diagnostics - 3-Wire module
- Checking Capacitor
- Resistance Check Using A Digital Multi-Meter
- Capacitance Check Using A Digital Multi-Meter (In Capacitance Mode)
- Testing a Run Capacitor Under Load
- Checking Outdoor Fan and Blower Motors (PSC Motors)
- Checking Fan and Blower Motor (ECM Motors)
- Checking ECM Motor Windings
- ECM CFM Adjustments MBE/AEPF
- Blower Performance Data
- Checking High Efficiency Motors
- EEM Blower Replacement
- MBR/AR*F Electronic Blower Time Delay Relay
- Checking Compressor
- Resistance Test
- Ground Test
- Unloader Test Procedure
- Operation Test
- Checking 3-Phase Scroll Compressor Rotation
- Testing Crankcase Heater (Optional Item)
- Checking Reversing Valve and Solenoid
- Testing Defrost Control
- Testing Defrost Thermostat
- Checking Heater Limit Control(s)
- Checking Heater Elements
- Electric Heater (Optional Item)
- Checking Heater Limit Control(s)
- Checking Heater Elements
- Refrigeration Repair Practice
- Leak Testing (Nitrogen or Nitrogen-Traced)
- Evacuation
- Charging
- Checking Compressor Efficiency
- Overfeeding
- Underfeeding
- Checking Superheat
- Subcooling on Expansion Valve System
- Checking Expansion Valve Operation
- Checking Restricted Liquid Line
- Overcharge Of Refrigerant
- Non-Condensables
- Compressor Burnout
- Refrigerant Piping
- Duct Static Pressures
- Single Piece Air Handler External Static
- Two Piece Air Handler External Static Pressure
- Furnace External Static Pressure
- Periodic Maintenance
PRODUCT DESIGN
53
This section gives a basic description of cooling unit
operation, its various components and their basic
operation. Ensure your system is properly sized for heat
gain and loss according to methods of the Air Conditioning
Contractors Association (ACCA) or equivalent.
Condensing Unit
The condenser air is pulled through the condenser coil
by a direct drive propeller fan. This condenser air is then
discharged out of the top of the cabinet. These units are
designed for free air discharge, so no additional resistance,
like duct work, shall be attached.
The suction and liquid line connections on present models
are of the sweat type for eld piping with refrigerant type
copper. Front seating valves are factory installed to accept
the eld run copper. The total refrigerant charge for a
normal installation is factory installed in the condensing
unit.
GSX, GSZ, ANX, ANZ, ASX, ASZ, SSX, SSZ, DSX, DSZ,
VSX, and VSZ models are available in 1 1/2 through 5 ton
sizes and use R-410A refrigerant. They are designed for
208/230 volt single phase applications.
GSX/GSZ *****3 models are available in 3, 4, and 5 ton
sizes and use R-410A refrigerant. They are designed for
208/230 volt 3-phase applications.
ASX, ASZ, DSX and DSZ R-410A model units use the
Copeland Scroll “Ultratech” Series compressors which are
specically designed for R-410A refrigerant. These units
also have Copeland® ComfortAlert diagnostics.
ANX, ANZ, GSX, GSZ, SSX, SSZ, VSX, and VSZ R-410A
model units use a mix of Scroll and Energy Ecient
compressors which are specically designed for R-410A
refrigerant. There are several design characteristics which
are dierent from the traditional reciprocating and/or scroll
compressors. “Ultractech” Series scroll compressors will
not have a discharge thermostat. Some of the early model
scroll compressors required discharge thermostat.
“Ultratech” Series scroll compressors use “POE” or
polyolester oil which is NOT compatible with mineral
oil based lubricants like 3GS. “POE” oil must be used if
additional oil is required.
Coils And Blower Coils
MBR/MBE blower cabinets are designed to be used as a
two-piece blower and coil combination. MBR/MBE/MBVC
blower sections can be attached to cased evaporator coil.
This two-piece arrangement allows for a variety of mix-
matching possibilities providing greater exibility. The MBE/
MBVC blower cabinets use a variable speed motor that
maintains a constant airow with a higher duct static.
MBE blower cabinests are approved for applications
with cooling coils of up to 0.8 inches W.C. external static
pressure. The MBE models includes a feature that allows
airow to be changed by +10% or -15%. The MBVC
models allow airow trimming of +/-10%.
The MBR blower cabinet uses a PSC motor. It is approved
for applications with cooling coils of up to 0.5 inches W.C.
external static pressure.
The MBR/MBE blower cabinets with proper coil matches
can be positioned for upow, counterow, horizontal right
or horizontal left operation. All units are constructed with
R-4.2 insulation. In areas of extreme humidity (greater than
80% consistently), insulate the exterior of the blower with
insulation having a vapor barrier equivalent to ductwork
insulation, providing local codes permit.
The CAUF, CAPF and CAPT coils are designed for upow
and counterow applications. The CACF and CHPF coils
are designed for horizontal applications.
AR*F, ASPF, ASUF, ASPT
Multi-Position Air Handler
These one-piece multi-position air handlers are used with
R-410A and are available in 2 to 5 ton sizes with optional 3
kW to 25kW electric heat kits available for eld installation.
The AR*F unit’s blower design includes a PSC motor and
is compatible with heat pumps and cooling applications.
ASUF and ASPT units use an EEM blower motor and are
compatible with heat pumps and cooling applications.
This appliance can be installed in the vertical or left
horizontal position without modication. The horizontal right
and downow positions require product modication. This
product is designed for zero inches (0 inches) clearance;
however, adequate access for service or replacement
must be considered without removing permanent structure.
This unit can be installed on a platform when deemed
necessary.
In an attic installation a secondary drain pan must be
provided by the installer and placed under the entire unit
with a separate drain line properly sloped and terminated
in an area visible to the owner. This secondary drain pan
is required in the event that there is a leak or main drain
blockage. Closed cell insulation should be applied to the
drain lines in unconditioned spaces where sweating may
occur.
external duct static pressure.