ACiQ-24-AHB Next Gen Ducted Heat Pump System User Guide
- June 9, 2024
- ACiQ
Table of Contents
ACiQ-24-AHB Next Gen Ducted Heat Pump System
INSTRUCTION
Thank you for purchasing a Next Gen Heat Pump system from ACiQ. This system gives you the benefits of a variable speed, inverter driven heat pump condenser, combined with a smart air handler with a variable speed blower.
This Quick Start Guide covers how to connect the thermostat to your system and ensure proper communication. It is not meant to replace the entire installation manual. Please reference install manual for in depth instructions.
Option 1 – Wiring Diagram When Using Provided Thermostat
(Recommended)
IMPORTANT NOTES
- Communication wire connected to S1 & S2 MUST be 18/2 AWG shielded cable. Failure to use specified wire can result in communication errors.
- The drain wire must be grounded at one end ONLY and the shield foul and conductor MUST be trimmed back and insulated at the other end. DO NOT ground the shield at both ends. Failure to follow this procedure can result in communication errors.
- Communication wire must be run a minimum of 18″ away from any line voltage wires. Failure to follow this procedure can result in communication errors.
Photo Examples
IMPORTANT INSTALL INFORMATION
S1 & S2 terminals are on top. R & C terminals are on the bottom.
To address this issue moving forward the new cover will look as shown below. If you have the old version use the picture below for a reference.
Option 2 – Connecting a 3rd Party 24 Volt Thermostat With Communication Wire Connected
Any 24 volt thermostat can be selected. Select the appropriate profile from
the options listed below to wire thermostat to air handler. S1 & S2 must be
connected at the indoor unit and the outdoor unit. Set the system dip switches
as shown below.
Thermostat Connection (Select One)
AHU DIP Switch Guide
Function Settings
SW1-1
| Thermostat Communication Method
OFF| RS-485 Communication. Used For Provided ACiQ Thermostat.
ON| 24 Volts. Used For Third Party Thermostats.
SW1-2
| Cold Air Prevention – Defrost
OFF| Cold Air Prevention Activated – Fan Stops
ON| No Cold Air Prevention – Fan Continues To Operate
SW1-3
| System Type
OFF| Heat Pump
ON| Cooling Only
SW1-4
| Outdoor System Brand
OFF| ACiQ Condenser
ON| Third Party Condenser
Heat Settings
SW2-1
| Auxiliary Heat Activation Differential
OFF| 4 °F Gap Between T1 & Ts Sensors
ON| 2 °F Gap Between T1 & Ts Sensors
SW2-2
| Auxiliary Heat Activation Delay
OFF| None
ON| Yes
SW2-3
| Auxiliary Heat Activation Delay Time
OFF| 15 Minute Delay (For Electric Heat)
ON| 30 Minute Delay (For Electric Heat)
SW2-4
| Heat Source Lock Outs
OFF| In This Position Electric Heat Lockout Can Be Set Via ENC2
ON| In This Position Compressor Lockout Can Be Set Via ENC2
ENC2 Dial Referenced In SW2-4. 16 Digits To Select From (0-9, A-F). Lock Out Range = -4 °F to 46 °F. 0 = No Lock Out, 1 = -4 °F Lock Out, F = 46 °F Lock Out. Each Digit Increases Temperature By 3.6 °F. Chart Provides Temperature Rounded To Nearest Whole Number.
Heat Settings Cont.
SW3-1
| Ramping Up Algorithm Delay
OFF| 1.5 Hours (Efficiency)
ON| 0.5 Hours (Comfort)
SW3-2
| Y/Y2 Temperature Differential Adjustment
OFF| 3.6 °F (Efficiency)
ON| 1.8 °F (Comfort)
SW3-3
| W2 Temperature Differential Activation
OFF| 6 °F (Efficiency)
ON| 4 °F (Comfort)
SW4
| Electric Heat Nominal CFM Adjustment
---|---
Available settings are 000/001/010/011. Each digit corresponds with an
individual switch position.
Heat Settings Cont.
S4-1
| Aux Heat Control
OFF| W1 & W2 Controlled Separately
ON| W1 & W2 Not Controlled Separately
S4-2
| Dehumidify Control
OFF| DH Terminal Available To Be Used
ON| DH Terminal Deactivated
Default AHU DIP Switch Settings Shown Below
- Delay between 1st stage & 2nd stage electric heat is time based, not temperature based.
- T1 Sensor = Return Air Temp (Room Temp), Ts = Set point
- SW2-3 only works if SW2-2 is turned ON.
- This sets maximum temperature, anything over this setting locks out.
- This sets minimum temperature, anything under this setting locks out.
| 1 = -4 °F | 5 = 10 °F | 9 = 25 °F | D = 39 °F |
|---|---|---|---|
| 2 = 0 °F | 6 = 14 °F | A = 28 °F | E = 43 °F |
| 3 = 3 °F | 7 = 18 °F | B = 32 °F | F = 46 °F |
| 4 = 7 °F | 8 = 21 °F | C = 37 °F |
-
This sets the maximum continuous runtime allowed before the system automatically stages up capacity. Only applies if 24 volt thermostat is being used.
-
If using 24 volt thermostat this sets compressor speed instead. ON = slower, OFF = Faster.
-
This DIP switch only works if using the provided communicating ACiQ thermostat. Otherwise delay is time based.
OFF = 0, ON = 1. -
For example [SW4-1 OFF, SW4-2 ON, SW4 -3 OFF] = 010
General Notes
If selected 24 volt thermostat has an E/AUX option and it is used to activate
heat, all delays will be bypassed.
When auxiliary heat is energized the fan will run in Turbo Mode.
IMPORTANT: In order for changes to take effect power must be OFF BEFORE
DIP switch changes.
Please note if using the provided ACiQ thermostat DIP Switch Settings will not
need to be adjusted. DIP Switch settings should only be adjusted by a
professional HVAC service technician. Please note in this quick start guide
the specific DIP Switches that need adjusted will be shown to ensure accurate
operation for the chosen set up. For Option 1 nothing needs to be done. For
Option 2 please refer to the DIP Switch diagram that shows the correct
position of the DIP Switches.Default setting is OFF except S4.