ACIQ ACiQ-24-HPB User manual

2023 V1.0
Quick Start Guide
ACiQ Next Gen Heat Pump Condenser
Dual Fuel
Dual Fuel System – ACiQ Heat Pump, 3rd Party Gas 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.
ACiQ-24-HPB
ACiQ-36-HPB
ACiQ-48-HPB
ACiQ-60-HPB

2023 V1.0
Requirements
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.
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.

Line Voltage Power - Must Also Connect
Ground Wire
Wired To
Outdoor
Disconnect
2023 V1.0
System Setup
SET DIP SWITCHES AS SHOWN
Reference Guides
D
L
L1
L2
R
C
Y1
Y2
B
W
Wired To
Selected
Indoor Unit
Reversing Valve (Energized In Heating)
Heat/Cool Stage 2 (High Demand)
Heat/Cool Stage 1
24 Volt Common
IGNORE - DO NOT USE
IGNORE - DO NOT USE
IGNORE - DO NOT USE
24 Volt Hot (Power)

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.
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.
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.
Typical Wiring Example
Reversing Valve (O/B): Set To Energized In Heating Mode (Opposite Of Most Default Settings)
2023 V1.0
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