To Next PageTo Next Page
Need help?Do you have a question about the Allied 4HP18V and is the answer not in the manual?
Procedure for inspecting equipment for shipping damage and reporting any findings to the carrier.
Guidelines for safe installation and servicing, including PPE, electrical safety, and handling.
Guidance on selecting the optimal outdoor unit location to minimize noise and ensure proper operation.
Caution to prevent injury from sharp edges and to properly stow removed panels during installation.
Direct exhaust vents away from the outdoor unit to prevent performance degradation and longevity issues.
Mandatory requirement to ensure the correct TXV is installed in the indoor section for proper operation.
Defines the minimum and maximum outdoor operating ambient temperatures for cooling and heating modes.
Specific considerations for installing units on rooftops, including elevation and wind barriers.
Elevate units per local climate and code requirements for drainage and to prevent ice buildup.
Specifies minimum clearances around the unit for airflow, wiring, and service access.
Instructions for installing the outdoor section on a solid, level foundation, separate from the building foundation.
Guidelines for using refrigerant-grade copper tubing, line set lengths, and proper routing and sealing.
Emphasizes the importance of the filter drier for system operation and warranty.
Instructions for installing line sets, including proper hangers, insulation, and avoiding contact with structures.
Requirement for a 6-inch vertical rise at the service valve if refrigerant tubing is buried by code.
Warning about PVE oils absorbing moisture and the importance of keeping the system sealed.
Guidance on installing suction traps for systems with significant vertical separation between units.
Step-by-step guide for removing the fixed orifice from the indoor coil for TXV installation.
Step-by-step guide for removing the existing expansion valve from the indoor coil.
Detailed instructions for installing the new expansion valve and connecting it to the liquid line assembly.
Procedure for correctly positioning and attaching the sensing bulb to the vapor line.
Instructions for connecting the equalizer line from the expansion valve to the vapor line.
Steps for preparing and brazing refrigerant lines, including cutting, capping, and using nitrogen flow.
Critical safety warnings related to brazing, including fire hazards and personal protection.
Instructions for protecting service valve seals during brazing and cooling the joints afterward.
Procedure for flowing nitrogen through the system during brazing to prevent oxidation.
Steps for brazing the line set to service valves and quenching the joint to absorb residual heat.
Diagram and instructions for connecting gauges and equipment for the flushing procedure.
Procedure for flushing existing line sets and indoor coils when converting from R-22 to R-410A.
Critical safety warnings regarding fire, explosion, and personal injury during refrigerant handling.
Instructions for connecting the manifold gauge set to the system for leak testing.
Procedure for testing the connected line set and indoor unit for leaks using nitrogen.
Instructions for connecting the manifold gauge set and vacuum pump for system evacuation.
Step-by-step procedure to evacuate the line set and indoor unit to the required vacuum level.
Caution against deep vacuum operation to prevent compressor damage and voiding warranty.
Guidelines for electrical circuit sizing and wire routing conforming to national and local codes.
Information on using the provided transformer for low-voltage control power.
Details on connecting conventional 24VAC non-communicating thermostats for variable capacity operation.
Critical warnings regarding electrical shock, fire hazards from aluminum wire, and proper sizing.
Instructions for installing the service disconnect switch and power wiring.
Guidance on installing the room thermostat at an appropriate location within the conditioned area.
Instructions for routing low-voltage control wires through the unit's grommet and securing them.
Guidance on routing high voltage wiring, connecting conduit, and securing ground wires.
Overview of the outdoor control board, including terminals, jumpers, and the 7-segment display.
Information on using the control panel's display and push button for operation and programming.
Procedure for programming the unit to its correct tonnage (2, 3, 4, or 5 Ton) for optimal performance.
Instructions for using the charge mode jumper for servicing procedures requiring 100% capacity operation.
Procedure for exiting the charge mode by removing the jumper or allowing automatic exit after 60 minutes.
Details on selecting cooling modes (Efficiency, Normal, Comfort) using the operation mode jumper.
Details on selecting heating modes (Efficiency, Comfort) using the operation mode jumper.
Explanation of how the unit operates with 2-stage and single-stage thermostats for heating and cooling.
Steps to perform before starting the unit, including fan rotation, wiring inspection, and voltage checks.
Methods for charging refrigerant, including weigh-in and subcooling methods, and charge adjustment.
Information on the high pressure switch, its function, and activation/resetting pressures.
Table of torque values for various fasteners used during servicing and repair.
Explanation of liquid and suction line service valves, their ports, and primary leak seals.
Procedures for accessing Schrader ports and operating liquid/suction line service valves (open/close).
List of checks recommended for regular system inspections by a qualified service technician.
Instructions for inspecting, cleaning, and replacing air filters to maintain performance and prevent failures.
Guidance on cleaning condensate drains and condenser coils to maintain efficiency and prevent damage.
Warning about sharp edges on condenser coils and the need for protective body gear.
Recommendations for protecting the unit's finish and preventing deterioration in various environments.
Explanation of heat pump operation, including defrost cycles, auxiliary heat, and frost formation.
Information on thermostat settings, fan modes (AUTO/ON), system modes (HEAT/COOL/AUTO), and indicators.
Overview of programmable thermostats and their features for setting time-of-day temperature points.
Key system information and steps to take before calling for service if the system is not working.
Procedure for inspecting equipment for shipping damage and reporting any findings to the carrier.
Guidelines for safe installation and servicing, including PPE, electrical safety, and handling.
Guidance on selecting the optimal outdoor unit location to minimize noise and ensure proper operation.
Caution to prevent injury from sharp edges and to properly stow removed panels during installation.
Direct exhaust vents away from the outdoor unit to prevent performance degradation and longevity issues.
Mandatory requirement to ensure the correct TXV is installed in the indoor section for proper operation.
Defines the minimum and maximum outdoor operating ambient temperatures for cooling and heating modes.
Specific considerations for installing units on rooftops, including elevation and wind barriers.
Elevate units per local climate and code requirements for drainage and to prevent ice buildup.
Specifies minimum clearances around the unit for airflow, wiring, and service access.
Instructions for installing the outdoor section on a solid, level foundation, separate from the building foundation.
Guidelines for using refrigerant-grade copper tubing, line set lengths, and proper routing and sealing.
Emphasizes the importance of the filter drier for system operation and warranty.
Instructions for installing line sets, including proper hangers, insulation, and avoiding contact with structures.
Requirement for a 6-inch vertical rise at the service valve if refrigerant tubing is buried by code.
Warning about PVE oils absorbing moisture and the importance of keeping the system sealed.
Guidance on installing suction traps for systems with significant vertical separation between units.
Step-by-step guide for removing the fixed orifice from the indoor coil for TXV installation.
Step-by-step guide for removing the existing expansion valve from the indoor coil.
Detailed instructions for installing the new expansion valve and connecting it to the liquid line assembly.
Procedure for correctly positioning and attaching the sensing bulb to the vapor line.
Instructions for connecting the equalizer line from the expansion valve to the vapor line.
Steps for preparing and brazing refrigerant lines, including cutting, capping, and using nitrogen flow.
Critical safety warnings related to brazing, including fire hazards and personal protection.
Instructions for protecting service valve seals during brazing and cooling the joints afterward.
Procedure for flowing nitrogen through the system during brazing to prevent oxidation.
Steps for brazing the line set to service valves and quenching the joint to absorb residual heat.
Diagram and instructions for connecting gauges and equipment for the flushing procedure.
Procedure for flushing existing line sets and indoor coils when converting from R-22 to R-410A.
Critical safety warnings regarding fire, explosion, and personal injury during refrigerant handling.
Instructions for connecting the manifold gauge set to the system for leak testing.
Procedure for testing the connected line set and indoor unit for leaks using nitrogen.
Instructions for connecting the manifold gauge set and vacuum pump for system evacuation.
Step-by-step procedure to evacuate the line set and indoor unit to the required vacuum level.
Caution against deep vacuum operation to prevent compressor damage and voiding warranty.
Guidelines for electrical circuit sizing and wire routing conforming to national and local codes.
Information on using the provided transformer for low-voltage control power.
Details on connecting conventional 24VAC non-communicating thermostats for variable capacity operation.
Critical warnings regarding electrical shock, fire hazards from aluminum wire, and proper sizing.
Instructions for installing the service disconnect switch and power wiring.
Guidance on installing the room thermostat at an appropriate location within the conditioned area.
Instructions for routing low-voltage control wires through the unit's grommet and securing them.
Guidance on routing high voltage wiring, connecting conduit, and securing ground wires.
Overview of the outdoor control board, including terminals, jumpers, and the 7-segment display.
Information on using the control panel's display and push button for operation and programming.
Procedure for programming the unit to its correct tonnage (2, 3, 4, or 5 Ton) for optimal performance.
Instructions for using the charge mode jumper for servicing procedures requiring 100% capacity operation.
Procedure for exiting the charge mode by removing the jumper or allowing automatic exit after 60 minutes.
Details on selecting cooling modes (Efficiency, Normal, Comfort) using the operation mode jumper.
Details on selecting heating modes (Efficiency, Comfort) using the operation mode jumper.
Explanation of how the unit operates with 2-stage and single-stage thermostats for heating and cooling.
Steps to perform before starting the unit, including fan rotation, wiring inspection, and voltage checks.
Methods for charging refrigerant, including weigh-in and subcooling methods, and charge adjustment.
Information on the high pressure switch, its function, and activation/resetting pressures.
Table of torque values for various fasteners used during servicing and repair.
Explanation of liquid and suction line service valves, their ports, and primary leak seals.
Procedures for accessing Schrader ports and operating liquid/suction line service valves (open/close).
List of checks recommended for regular system inspections by a qualified service technician.
Instructions for inspecting, cleaning, and replacing air filters to maintain performance and prevent failures.
Guidance on cleaning condensate drains and condenser coils to maintain efficiency and prevent damage.
Warning about sharp edges on condenser coils and the need for protective body gear.
Recommendations for protecting the unit's finish and preventing deterioration in various environments.
Explanation of heat pump operation, including defrost cycles, auxiliary heat, and frost formation.
Information on thermostat settings, fan modes (AUTO/ON), system modes (HEAT/COOL/AUTO), and indicators.
Overview of programmable thermostats and their features for setting time-of-day temperature points.
Key system information and steps to take before calling for service if the system is not working.
General
