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ICP PDX342080K00A1 - User Manual

ICP PDX342080K00A1
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Packaged Dual Fuel Units
Owner's Guide to Operating and
Maintaining Your Dual Fuel Unit
ELECTRICAL SHOCK HAZARD.
Failure to follow this warning could result in
personal injury, death, and/or property damage.
Disconnect power at fuse box or service panel
before performing recommended maintenance.
FIRE, EXPLOSION, ELECTRICAL SHOCK
HAZARD.
Failure to follow this warning could result in
personal injury, death, and/or property damage.
Do not use this unit if any part has been under
water. Immediately call a qualified service
technician to inspect the unit and to replace any
part of the control system which has been under
water.
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury, death, and/or property
damage.
--Information in this manual MUST be followed
exactly.
--Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
--WHAT TO DO IF YOU SMELL GAS
Leave the building immediately.
Do not try to light any appliance.
Do touch any electrical switch; do not use any
phone in the building.
Immediately call your gas supplier from a
neighbors phone. Follow the gas suppliers
instructions.
If you cannot reach your gas supplier, call the
fire department.
-- Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
This manual should be left with the owner.
Printed in U.S.A.
Code: PDX3 2/22/06 518 02 1601 O0
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Summary

Safety Considerations

To Light Unit

Provides detailed steps for safely igniting the unit's gas heating system.

To Shut Unit Off

Efficient Heating and Cooling

Important Facts

Key information for protecting the investment and reducing service calls.

Operating Your Unit

Thermostat

Explanation of thermostat controls and their functions for the dual fuel system.

Sequence of Operation

Details the operational sequence for cooling and heating modes.

Gas Heating Start-Up Procedure

Step-by-step guide for initiating the gas heating function.

Routine Maintenance

Maintenance and Care by the Equipment Owner

Guidance for owners on performing basic maintenance tasks.

Air Filters

Instructions for checking, cleaning, or replacing air filters.

Heat Exchanger

Importance of checking and cleaning the heat exchanger annually.

Fans and Fan Motor

Periodic checks of fan components for optimal performance.

Evaporator and Condenser Coils

Requirement for qualified personnel to clean coils.

Condensate Drain

Checking and cleaning the drain pan and line.

Compressor

Information on compressor oil level and maintenance.

Condenser Fan

Ensuring the condenser fan remains free of obstructions.

Electrical Controls and Wiring

Difficulty in checking controls without proper instruments.

Refrigeration Circuit

Need for specialized equipment to check for refrigerant leaks.

Combustion Area and Vent System

Visual inspection of combustion area and vent system.

Unit Panels

Ensuring panels are securely fastened after maintenance.

Regular Dealer Maintenance

Before You Call for Service, Check for These Easily Solved Problems

Summary

Safety Considerations

To Light Unit

Provides detailed steps for safely igniting the unit's gas heating system.

To Shut Unit Off

Efficient Heating and Cooling

Important Facts

Key information for protecting the investment and reducing service calls.

Operating Your Unit

Thermostat

Explanation of thermostat controls and their functions for the dual fuel system.

Sequence of Operation

Details the operational sequence for cooling and heating modes.

Gas Heating Start-Up Procedure

Step-by-step guide for initiating the gas heating function.

Routine Maintenance

Maintenance and Care by the Equipment Owner

Guidance for owners on performing basic maintenance tasks.

Air Filters

Instructions for checking, cleaning, or replacing air filters.

Heat Exchanger

Importance of checking and cleaning the heat exchanger annually.

Fans and Fan Motor

Periodic checks of fan components for optimal performance.

Evaporator and Condenser Coils

Requirement for qualified personnel to clean coils.

Condensate Drain

Checking and cleaning the drain pan and line.

Compressor

Information on compressor oil level and maintenance.

Condenser Fan

Ensuring the condenser fan remains free of obstructions.

Electrical Controls and Wiring

Difficulty in checking controls without proper instruments.

Refrigeration Circuit

Need for specialized equipment to check for refrigerant leaks.

Combustion Area and Vent System

Visual inspection of combustion area and vent system.

Unit Panels

Ensuring panels are securely fastened after maintenance.

Regular Dealer Maintenance

Before You Call for Service, Check for These Easily Solved Problems

Overview

This document serves as an owner's guide for Packaged Dual Fuel Units, providing essential information for operating and maintaining the system. The unit is a combination heating and cooling system designed for residential use, offering both heat pump and gas heating capabilities.

Function Description

The Packaged Dual Fuel Unit is a comprehensive climate control system that provides both heating and cooling for your home. It integrates a heat pump for energy-efficient heating and cooling, along and a gas furnace for supplementary heating, particularly in colder outdoor temperatures or during defrost cycles. The unit is equipped with an automatic direct spark ignition system for the gas heating section and a power combustion blower to ensure efficient and safe operation.

In cooling mode, the unit operates in two stages, automatically selecting the appropriate stage based on the difference between the actual indoor temperature and the thermostat's set point. The compressor, condenser fan, and evaporator blower motor work together to cool and dehumidify the indoor air. When the cooling set point is satisfied, the compressor and condenser fan de-energize, with the evaporator blower motor continuing for a short delay to maximize efficiency.

In heating mode, the unit intelligently switches between three operational modes based on outdoor temperature, indoor temperature, and the thermostat's set point. For small temperature differences and outdoor temperatures above a user-defined balance point, the unit operates in first-stage heat pump mode. For larger temperature differences under similar outdoor conditions, it switches to second-stage heat pump mode. Gas heat mode is activated under four specific conditions: when the outdoor temperature falls below the balance point, when there's a large difference between actual and desired indoor temperatures (even if above the balance point), when the heat pump system is not operational (e.g., in Emergency Heat mode), or during a defrost cycle to clear frost from the outdoor coil. The system is designed to never operate in heat pump and gas heat modes simultaneously.

The unit also features an automatic defrost cycle for the heat pump, which activates at preset time intervals (30, 60, 90, or 120 minutes) if frost buildup on the outdoor coil is detected. This ensures continuous energy-efficient operation by preventing ice from impeding airflow and reducing heat absorption.

Usage Features

The unit's operation is primarily controlled by a multi-purpose indoor thermostat, which typically includes a temperature control selector, a FAN switch, and a SYSTEM switch (often with an EMERGENCY HEAT or AUXILIARY HEAT option).

To light the unit, a specific sequence of steps must be followed to ensure safety. This involves setting the thermostat to the lowest temperature, closing the external manual gas shutoff valve, turning off electrical supply, accessing the internal gas valve to set it to "OFF" for 5 minutes, then to "ON," replacing the access panel, restoring electrical supply, opening the external manual shutoff valve, and finally setting the thermostat to initiate heating. The unit will then attempt ignition, with a retry mode if the burners don't light within 25 seconds. If ignition fails after four consecutive attempts, the unit will lock out for 3 hours.

To shut the unit off, the thermostat should be set to its lowest temperature and the system switch to "OFF." The external manual gas shutoff valve must be closed, followed by turning off the electrical power supply. The front access panel is then removed to set the internal gas valve selector switch to "OFF," after which the panel is replaced. If shutting down for the end of the heating season, electrical power should be restored and the system switch set to "COOL" to ensure the cooling system remains operational.

The FAN switch offers "AUTO" (blower runs only when the system is operating) and "ON" (blower runs continuously) options. Continuous fan operation can help maintain more consistent indoor temperatures and distribute conditioned air more evenly. The SYSTEM switch typically includes "COOL," "OFF," and "HEAT" selections, with some thermostats also offering an "AUTO" option for automatic changeover between heating and cooling. The "EMERGENCY HEAT" or "AUXILIARY HEAT" setting allows the gas furnace to operate for all heating requirements if the heat pump system is malfunctioning.

The balance point temperature, which determines when gas heat is used instead of heat pump heat, can be adjusted by the homeowner or installer, as detailed in the installation instructions.

Maintenance Features

Routine maintenance is crucial for ensuring the unit's dependability and peak efficiency. While some basic tasks can be performed by the owner, more complex maintenance and repairs should be handled by trained and qualified service personnel.

Safety Precautions:

  • Always disconnect power at the fuse box or service panel and turn off the gas supply before performing any maintenance.
  • Never attempt to light the pilot or burner with a match or flame.
  • Be aware of sharp sheet metal parts and screws when accessing internal components.
  • Do not operate the unit if any part has been under water; call a qualified service technician immediately.
  • Do not operate the unit in a corrosive atmosphere containing chlorine, fluorine, or other corrosive chemicals.

Owner-Performable Maintenance:

  • Air Filters: Check air filter(s) every 3 to 4 weeks and change or clean them whenever they become dirty. Dirty filters can increase operating costs, stress the blower motor, and shorten unit life. Always use the correct size and type of filter, and ensure airflow arrows are in the correct direction. Never operate the unit without filters.
  • Airflow: Ensure supply-air and return-air registers are not blocked by drapes, furniture, or other items. Outdoor units must have unrestricted airflow; do not cover them or allow debris (grass clippings, leaves) to accumulate. Maintain a minimum 10-inch clearance between the outdoor unit and tall vegetation.
  • Condensate Drain: Occasionally check the condensate drain system during the cooling season to ensure it is not clogged.
  • Heat Exchanger: Inspect and clean before each heating season to ensure dependable and efficient operation.
  • Flue Product Passages: Inspect burners, heat exchanger, and flue collector box.
  • Combustion and Ventilation Air Passages: Inspect all passages and openings.
  • Gas Pipes: Closely inspect all gas pipes leading to and inside the unit.
  • Coils: Inspect and clean condenser and evaporator coils.
  • Evaporator Drain Pan: Inspect and clean the drain pan.
  • Blower Wheel Housing and Motor: Inspect and clean these components.
  • Ductwork: Inspect all supply-air and return-air ducts for leaks, obstructions, and insulation integrity.
  • Unit Base: Inspect for cracks, gaps, or other hazardous conditions.
  • Unit Casing: Inspect for signs of deterioration.
  • Electrical Wiring and Components: Inspect all electrical wiring and components for proper connection.
  • Refrigerant Circuit: Inspect for leaks and pressure-check to determine appropriate refrigerant charge.
  • Compressor Oil Level: Inspect the compressor oil level.
  • Operational Check: Perform an operational check to determine working conditions and make necessary repairs or adjustments.

Regular dealer maintenance, often available through service contracts, helps ensure the unit's longevity and optimal performance.

ICP PDX342080K00A1 Specifications

General IconGeneral
SEER Rating16
Voltage208/230V
Phase1
RefrigerantR-410A
Unit Weight220 lbs

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