HVAC ACiQ-24-HPB Gen Heat Pump Condenser Dual Fuel User Guide

HVAC ACiQ-24-HPB Gen Heat Pump Condenser Dual Fuel

Product Information

Specifications

• Model Numbers: ACiQ-24-HPB, ACiQ-36-HPB, ACiQ-48-HPB, ACiQ-60-HPB, ACiQ-24-EHPB, ACiQ-36-EHPB, ACiQ-48-EHPB, ACiQ-60-EHPB, ACiQ-18-AC, ACiQ-24-AC, ACiQ-30-AC, ACiQ-36-AC, ACiQ-48-AC
• Dual Fuel System: ACiQ Heat Pump or AC, 3rd Party Furnace, 3rd Party Coil
• Refrigerant Connections: 3/8 Liquid Line & 3/4 Suction Line

Product Usage Instructions

Requirements

1. The indoor coil (evaporator coil or A-Coil) must have a heat pump compatible Thermostatic Expansion Valve (TXV).
2. The indoor coil must be sized correctly, matching the nominal BTU capacity of the selected outdoor unit. It is permissible to oversize the indoor coil by up to 1 ton (12,000 BTU/H).
3. A 24-volt heat pump thermostat with a minimum of 2 stages of heating and 2 stages of cooling must be used (2H, 2C).
4. The selected thermostat must have a wired, wireless, or internet-based outdoor temperature-sensing feature. Standard heat/cool only thermostats will not work for this application.

Refrigerant Connections

• Line Set Size Requirements: 3/8 Liquid Line & 3/4 Suction Line
• This system comes with copper adaptors that thread onto the outdoor unit. The other end of the adaptor has a female sweat connection which allows for brazing the line set.
• Purge with nitrogen during brazing. Skipping this step can shorten the compressor’s life and void the warranty.
• To ensure no leaks are present, startup the unit in heating mode. While the unit is operating, retorque the flare adaptors (while unit is HOT). It is recommended to use a digital torque wrench.
• Only a licensed and certified HVAC professional should complete the installation of this equipment. Please verify your selected technician is section 608-certified.

Reference Guides

• Outdoor Unit DIP Switch Location On Circuit Board
• Set DIP Switches As Shown Below:
• L1 Line Voltage Power – Must Also Connect
• L2 Ground Wire
• R 24 Volt Hot (Power)
• C 24 Volt Common
• Y1 Heat/Cool Stage 1
• Y2 Heat/Cool Stage 2 (High Demand)
• B Reversing Valve (Energized In Heating)
• W IGNORE – DO NOT USE
• D IGNORE – DO NOT USE
• L IGNORE – DO NOT USEWired To Outdoor Disconnect
  Wired To Selected Indoor Unit

Thermostat Wiring

• Installer Setup & Advanced Options Settings
• System Type: Set To Dual Fuel
• Reversing Valve (O/B): Set To Energized In Heating Mode (Opposite Of Most Default Settings)
• Backup Heat Type: Set To Gas/Oil Furnace
• Outdoor Temperature Sensing: Varies Based On Thermostat (Wi-Fi, Wired, Or Wireless Sensor)
• Typical Wiring Example
• Thermostat wiring to the terminals on the furnace will vary based on the brand of the thermostat. Please refer to the thermostat manual for furnace wiring. Look for a section on dual fuel wiring.

FAQ

Q: Can I use a standard heat/cool-only thermostat with this system?

A: No, standard heat/cool-only thermostats will not work for this application. You need a 24-volt heat pump thermostat with a minimum of 2 stages of heating and 2 stages of cooling.

Q: What size should the line set be?
A: The line set size requirements are 3/8 Liquid Line and 3/4 Suction Line.

Q: Can I install this system myself?
A: No, only a licensed and certified HVAC professional should complete the installation of this equipment. Please verify that your selected technician is section 608-certified.

Dual Fuel System – ACiQ Heat Pump or AC, 3rd Party Furnace, 3rd Party Coil
Congratulations on purchasing an ACiQ Next-Generation heat pump condenser. Using this system in a dual fuel application will dramatically reduce your heating costs in the winter compared to a standard system setup. The heat pump will provide heat in most conditions and the furnace will provide backup heat at extreme low temperatures.

Requirements

1. The indoor coil (often referred to as the evaporator coil or A-Coil) must have a heat pump compatible Thermostatic Expansion Valve (TXV).
2. The indoor coil must be sized correctly. At a minimum, it must match the nominal BTU capacity of the selected outdoor unit. It is permissible to oversize the indoor coil by up to 1 ton (12,000 BTU/H).
3. A 24 volt heat pump thermostat with a minimum of 2 stages of heating and 2 stages of cooling must be used (2H, 2C).
4. The selected thermostat must have a wired, wireless, or internet-based outdoor temperature sensing feature.

STANDARD HEAT/COOL-ONLY THERMOSTATS WILL NOT WORK FOR THIS APPLICATION.

REFRIGERANT CONNECTIONS

• IMPORTANT : Line Set Size Requirements = 3/8″ Liquid Line & 3/4″ Suction Line.

• IMPORTANT : This system comes with copper adaptors that thread on to the outdoor unit. The other end of the adaptor has a female sweat connection which allows for brazing the line set.
  IMPORTANT : Purge with nitrogen during brazing! If you skip this essential step the abrasive, oxidative buildup will dramatically shorten the compressor’s life and void the warranty. DO NOT skip this step.

• IMPORTANT : To ensure no leaks are present startup the unit in heating mode. While the unit is operating retorque the flare adaptors (while unit is HOT). It is recommended to use a digital torque wrench.

• IMPORTANT : Only a licensed and certified HVAC professional should complete the installation of this equipment. Please verify your selected technician is section 608-certified.

Reference Guides

Outdoor Unit DIP Switch Location On Circuit Board

Set DIP Switches As Shown Below

Thermostat Wiring

IMPORTANT – Every thermostat is different. Modern thermostats will have an “Installer Setup” or “Advanced Options” mode. A dual fuel setup requires a heat pump compatible thermostat, which will call on the furnace only as backup heat at extreme low temperatures. Here are general guidelines – refer to your thermostat manual for specifics.

Installer Setup & Advanced Options Settings

• System Type: Set To Dual Fuel Reversing Valve (O/B): Set To Energized In Heating Mode (Opposite Of Most Default Settings)
• Backup Heat Type : Set To Gas/Oil Furnace
• Outdoor Temperature Sensing: Varies Based On Thermostat (Wi-Fi, Wired, Or Wireless Sensor)
• Lockout/Switchover Temperature: Varies Based On Desire For Greater Efficiency Or Comfort. Maximum Comfort = 35 °F, Maximum Efficiency = -10 °F, Our Recommendation = 0 °F

IMPORTANT – the heat pump and the furnace should NEVER run at the same time. Most heat pump thermostats are already configured to prevent this from happening.

Typical Wiring Example

• The thermostat wiring to the terminals on the furnace will vary based on the brand of the thermostat. Please refer to the thermostat manual for furnace wiring. Look for a section on dual fuel wiring. Some thermostats send the call for backup heat over the W
• terminals as shown. Some send the backup call over Aux/E.
• 18/8 thermostat wire will be required for correct low-voltage wiring. A common color scheme is shown in the diagram, but please note colors may vary. Many furnaces do not have an O/B terminal. If this is the case connect the orange O/B wires with a wire nut.
• Example of a wire nut. Please note accurate wire color is not represented in this photo

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