ICP PHM336K00A1 - User Manual

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Summary

Safety Labeling and Signal Words

Danger, Warning, and Caution Signal Words

Explains the meaning and usage of Danger, Warning, and Caution signal words.

Signal Words in Manuals

Details the use of signal words like WARNING and CAUTION within the manual.

Product Labeling

Illustrates how signal words are combined with colors and pictures on product labels.

Dimensions

Unit Dimensions and Diagram

Provides detailed dimensions and an illustration of the unit.

Safe Installation Requirements

Installation Safety and Cautions

Covers essential safety guidelines, including electrical hazards and environmental considerations.

Locating The Unit

Outdoor Unit Placement

Details proper placement for outdoor installation, considering drainage and environment.

Clearances

Service and Operational Clearances

Details minimum clearances for combustible construction, service access, and operational airflow.

Installation

Unit Installation and Duct Collars

Covers general installation notes, slope, access, and the procedure for installing duct collars.

Condensate Drain

Condensate Drain Installation

Details the condensate drain outlet, the need for a trap, and proper line routing.

Electric Heat

Accessory Electric Heater Installation

Explains the installation of accessory electric heaters and their associated control packages.

Unit Electrical Wiring

Electrical Safety and Wiring Procedures

Covers electrical shock hazards, grounding, and proper line voltage wiring techniques.

Voltage Conversion and Low Voltage Wiring

230 V to 208 V Conversion

Step-by-step guide to convert the unit's voltage supply from 230V to 208V.

Low Voltage and Field Wiring

Covers low voltage wire routing, thermostat connections, and field-installed equipment wiring.

Final Electrical Check

Electrical System Final Inspection

Guides on performing a final check of the electrical system for proper wiring and protection.

Control Box Configuration

Control Box Components Overview

Identifies major components within the unit's control box, including boards and transformers.

Control Box Wiring Diagrams

Provides detailed wiring diagrams for single and dual capacity control boxes.

2-31;2 Ton Model Wiring Schematic

Component Arrangement Diagram

Shows the physical layout of components within the unit for 2-31/2 ton models.

Wiring Legend and Installation Notes

Explains the wiring diagram legend and provides critical installation notes.

Defrost and Speed Tap Settings

Details DIP switch settings for defrost and speed tap configurations for blower operation.

4 & 5 Ton Model Wiring Schematic

Component Arrangement Diagram

Shows the physical layout of components within the unit for 4 & 5 ton models.

Wiring Legend and Installation Notes

Explains the wiring diagram legend and provides critical installation notes.

Defrost and Speed Tap Settings

Details DIP switch settings for defrost and speed tap configurations for blower operation.

Rain Shield Installation

Rain Shield Installation Procedure

Provides step-by-step instructions for installing the rain shield on the unit.

Air Distribution System

Ductwork, Connections, and Filters

Covers ductwork requirements, connections, insulation, and filter specifications.

Start-up Procedures

Circulating Air Blower Setup

Details steps for determining and setting the correct blower speed for operation.

Cooling Operation Check

Outlines procedures for verifying proper operation during cooling mode.

Pre-Operation Checks

Lists essential checks to perform before initiating unit operation.

Defrost Control Time Interval Adjustment

Defrost Interval Setting Procedure

Explains how to adjust the defrost control time interval using DIP switches.

Defrost Control Board and Switches

Identifies the defrost control board and its DIP switches for interval selection.

Sequence of Operation

Cooling and Heating Sequences

Covers the operational sequences for cooling and heating, including model-specific details.

Continuous Fan and Defrost Modes

Explains the unit's operation in continuous fan mode and the defrost sequence.

Accessory Control Options

Mentions the installation of optional low/high pressure and low ambient controls.

Operation

Scroll Recycle Delay Timer

Explains the function of the recycle delay timer for compressor protection.

Compressor Protection Switches

Details the role of low/high pressure switches in protecting the compressor.

Operating Cautions

Provides cautions regarding operating the unit in specific temperature conditions to prevent damage.

Summary

Safety Labeling and Signal Words

Danger, Warning, and Caution Signal Words

Explains the meaning and usage of Danger, Warning, and Caution signal words.

Signal Words in Manuals

Details the use of signal words like WARNING and CAUTION within the manual.

Product Labeling

Illustrates how signal words are combined with colors and pictures on product labels.

Dimensions

Unit Dimensions and Diagram

Provides detailed dimensions and an illustration of the unit.

Safe Installation Requirements

Installation Safety and Cautions

Covers essential safety guidelines, including electrical hazards and environmental considerations.

Locating The Unit

Outdoor Unit Placement

Details proper placement for outdoor installation, considering drainage and environment.

Clearances

Service and Operational Clearances

Details minimum clearances for combustible construction, service access, and operational airflow.

Installation

Unit Installation and Duct Collars

Covers general installation notes, slope, access, and the procedure for installing duct collars.

Condensate Drain

Condensate Drain Installation

Details the condensate drain outlet, the need for a trap, and proper line routing.

Electric Heat

Accessory Electric Heater Installation

Explains the installation of accessory electric heaters and their associated control packages.

Unit Electrical Wiring

Electrical Safety and Wiring Procedures

Covers electrical shock hazards, grounding, and proper line voltage wiring techniques.

Voltage Conversion and Low Voltage Wiring

230 V to 208 V Conversion

Step-by-step guide to convert the unit's voltage supply from 230V to 208V.

Low Voltage and Field Wiring

Covers low voltage wire routing, thermostat connections, and field-installed equipment wiring.

Final Electrical Check

Electrical System Final Inspection

Guides on performing a final check of the electrical system for proper wiring and protection.

Control Box Configuration

Control Box Components Overview

Identifies major components within the unit's control box, including boards and transformers.

Control Box Wiring Diagrams

Provides detailed wiring diagrams for single and dual capacity control boxes.

2-31;2 Ton Model Wiring Schematic

Component Arrangement Diagram

Shows the physical layout of components within the unit for 2-31/2 ton models.

Wiring Legend and Installation Notes

Explains the wiring diagram legend and provides critical installation notes.

Defrost and Speed Tap Settings

Details DIP switch settings for defrost and speed tap configurations for blower operation.

4 & 5 Ton Model Wiring Schematic

Component Arrangement Diagram

Shows the physical layout of components within the unit for 4 & 5 ton models.

Wiring Legend and Installation Notes

Explains the wiring diagram legend and provides critical installation notes.

Defrost and Speed Tap Settings

Details DIP switch settings for defrost and speed tap configurations for blower operation.

Rain Shield Installation

Rain Shield Installation Procedure

Provides step-by-step instructions for installing the rain shield on the unit.

Air Distribution System

Ductwork, Connections, and Filters

Covers ductwork requirements, connections, insulation, and filter specifications.

Start-up Procedures

Circulating Air Blower Setup

Details steps for determining and setting the correct blower speed for operation.

Cooling Operation Check

Outlines procedures for verifying proper operation during cooling mode.

Pre-Operation Checks

Lists essential checks to perform before initiating unit operation.

Defrost Control Time Interval Adjustment

Defrost Interval Setting Procedure

Explains how to adjust the defrost control time interval using DIP switches.

Defrost Control Board and Switches

Identifies the defrost control board and its DIP switches for interval selection.

Sequence of Operation

Cooling and Heating Sequences

Covers the operational sequences for cooling and heating, including model-specific details.

Continuous Fan and Defrost Modes

Explains the unit's operation in continuous fan mode and the defrost sequence.

Accessory Control Options

Mentions the installation of optional low/high pressure and low ambient controls.

Operation

Scroll Recycle Delay Timer

Explains the function of the recycle delay timer for compressor protection.

Compressor Protection Switches

Details the role of low/high pressure switches in protecting the compressor.

Operating Cautions

Provides cautions regarding operating the unit in specific temperature conditions to prevent damage.

This document provides installation instructions for the PHM3 Series Package Heat Pumps. It covers various aspects from safety labeling and dimensions to electrical wiring, start-up procedures, and operational sequences.

Function Description:

The PHM3 Series Package Heat Pumps are designed for outdoor installation, providing both cooling and heating functions. These units are self-contained, meaning all major components for both heating and cooling are housed within a single cabinet. They are intended to be placed on a ground-level platform, such as a concrete slab or concrete blocks, ensuring proper drainage and clearance from surrounding structures. The units utilize a circulating blower and a condenser fan for air distribution and heat exchange. Electric heat accessories are available to supplement the heating function when required.

Important Technical Specifications:

Dimensions:
- PHM324/30 units have an "A" dimension of 32-3/8 inches (821 mm).
- PHM336 to 54 units have an "A" dimension of 40-3/8 inches (1025 mm).
- All dimensions are provided in inches (mm).
- The unit features a coil access panel, blower access panel, and electrical access for line voltage power supply.
- A round flange accommodates a 14-inch diameter return duct.
- Condensate drain connection is 3/4-inch (19.1 mm) threaded female PVC.
- Low voltage wiring access is 7/8-inch (22 mm).
Electrical Wiring:
- All electrical work must conform to local codes, ordinances, and the National Electrical Code ANSI/NFPA 70-1990 (or current edition) in the United States, or CAN/CGA B149-1 and CSA C.22.1 in Canada.
- Line voltage power supply must be from a separate fused circuit with a disconnect switch located within sight of the unit.
- Supply voltage, amperage, fuse, and disconnect switch sizes must conform to local codes.
- Unit must be grounded to the electrical service panel using a copper conductor of appropriate size.
- Line voltage connections are made on the unit electrical control plate, accessible by removing the Blower/Electrical access panel.
- Units can be converted from 230V to 208V by reconfiguring the 24V control transformer wiring.
- Low voltage wiring is routed through a port on the rear panel to the control box.
Air Distribution System:
- Ductwork, supply registers, and return air grilles must be designed and sized to handle the unit's cooling air volume.
- Maximum recommended velocity in trunk ducts is 1000 ft./min (5.08 m/s), and in branches, 800 ft./min (4.06 m/s).
- Ductwork installed outdoors should have a minimum of 2 inches (51 mm) of fiberglass insulation with a weatherproof vapor barrier.
- Ductwork installed in attics or other exposed areas should have a minimum of 2 inches (51 mm) fiberglass insulation with an indoor type vapor barrier.
- Flexible, non-combustible connectors are recommended between main trunk ducts and plenums to minimize vibration.
- All return air must pass through a field-supplied filter.
- Recommended filter sizes vary by nominal tons of air conditioning and cubic feet per minute (CFM), with separate specifications for disposable and cleanable filters. For example, a 2-ton unit (700-900 CFM) requires a 400 sq. in. (20x25) disposable filter or a 246 sq. in. (15x20) cleanable filter.
Electric Heat Accessories:
- A variety of accessory electric heaters (5.0 to 20.0 KW) are available.
- Heater modules mount on the blower inlet and include integral harnesses for connection to a remote-mounted heater control package.
Defrost Control:
- The defrost board has dip switches for setting defrost intervals at 30, 60, 90, or 120 minutes (factory setting is 60 minutes).
- The backup defrost terminate time is fixed at 10 minutes.
- Compressor recycle delay timer is 5 minutes.
- Power interrupt response is 17-35 msec.
- Quiet shift compressor recycle delay is 30 seconds.
Pressure Switches:
- Units are equipped with a low pressure switch on the liquid line (high side) to prevent system damage from a loss of charge.
- PHM348-54 models are also equipped with a high pressure switch to protect the compressor.

Usage Features:

Outdoor Installation: Designed exclusively for outdoor use, placed on a level platform.
Clearances: Minimum clearances must be maintained from adjacent structures for adequate air circulation and service access. Recommended clearances include 30 inches (762 mm) for blower and evaporator/electrical access panels, 0 inches for combustible base and duct connections, 48 inches (1219 mm) between overhang and unit top, and 10 inches around the condenser coil area.
Condensate Drainage: A field-supplied condensate trap with a standing column of water of at least 2 inches (50.8 mm) must be installed as near to the unit as possible to counteract negative pressure from the circulating blower and condenser fan.
Blower Speed Settings: Blower speed tap settings are provided for rated and high airflow, varying by unit tonnage (e.g., 2-ton units use Tap 1 for rated airflow and Tap 2 for high airflow). The blower motor speed terminal block (speed taps) must be set to the proper cooling speed.
Thermostat Control: The unit's operation is controlled by a thermostat. Proper connection and placement of the thermostat are crucial for optimal performance. Low voltage wiring harness connection diagrams are provided for PHM324-42 and PHM348-54 units.
Two-Stage Operation (PHM348-54): These units utilize a two-stage indoor thermostat for both cooling and heating. The system can switch between low and high stage cooling/heating based on demand, energizing an internal solenoid valve in the scroll compressor and adjusting indoor fan speed.
Continuous Fan Operation: When selected on the thermostat, the indoor fan runs continuously at the selected airflow setting (for 024-042 units) or low stage (Y1) airflow (for 048 and 054 units).
Rain Shield Installation: A rain shield is installed to protect internal components from water, including a closed-cell foam pad and circuit breaker filler plates for unused slots.

Maintenance Features:

Access Panels: Blower/electrical access panels and coil access panels are removable for service and maintenance.
Filter Maintenance: Filters must be clean, properly sized, and installed correctly in the return air duct. The unit should not be operated without all filters in place.
Electrical Checks: Regular checks of electrical wiring, connections, and grounding are essential. All openings must be sealed to prevent moisture entry into the control box.
Defrost Control Adjustment: The defrost interval can be adjusted via dip switches on the defrost control board. Service testing procedures are outlined for forced defrost cycles.
Low/High Pressure Ports: The unit is equipped with extra low and high pressure ports for the installation of pressure controls or low ambient controls, facilitating system monitoring and protection.
Pre-Start Checks: Before starting the unit, ensure the blower motor speed terminal block is set correctly, air filters are installed, all wires are in place, and tools are removed. All service access panels must be replaced.
Operational Monitoring: During power application, check for proper operation of the contactor, compressor, condenser fan motor, and circulating air blower. Any unusual sparking, odors, or noises require immediate shutdown and re-inspection.
Temperature Limitations: Do NOT operate the unit on cooling when the outdoor temperature is below 45°F (PHM324) or 40°F (PHM330-54) to prevent damage to the compressor.