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To ensure the Arzel
HeatPumPro zoning system operates properly after completing all installation and
system configuration steps, please follow the procedures below for commissioning the system.
Damper Verification
1. Set all thermostats to the OFF mode and all thermostat fan switches to AUTO.
2. Turn the HVAC system and the HeatPumPro system PWR switches to ON.
3. Verify proper LAT and OAT temperature readings on the display screen.
4. Turn the Zone 1 thermostat fan switch ON. The fan in the HVAC system will turn on. Check the
air flow at all registers to determine that only Zone 1 dampers are open and all other dampers
are closed.
5. Follow the above procedure for all other zones.
Bypass Adjustment and Checkout
1. Raise the “Zone Weight %” of the smallest zone above the “AH Threshold %.”
2. Initiate a call for heat or cool in only that zone.
3. A Y2-AH signal will appear on the HVAC Output display screen and a call for High-CFM will be
initiated.
4. Adjust the bypass closed and have the customer determine if the air delivery noise is
objectionable. The customer must be informed that elevated air delivery into the smallest zone
is critical to effective system operation when a single zone calls. Adjust the bypass in small
increments until the objectionable noise is eliminated. Bypass CFM is only done to eliminate
“Objectionable” air noise. Consult the homeowner to determine their requirements.
5. Initiate a similar call at a larger zone to verify that the bypass closes with additional duct
capacity.
6. Reset the “Zone Weight %” to its original setting and return thermostats to normal settings.
Air Handler Stage Threshold and Heat Threshold Checkout
1.
Set all thermostats to the OFF position. Set the demo mode to true in the Set-Up Wizard.
2.
Remove the leaving air temperature (LAT) sensor from the supply ductwork.
3.
Initiate a call for heat on Zone 1, a Y1 and G signal to the air handler and a Y1 signal to the
condenser will appear on the display screen.
4.
Initiate a call in a second zone that will raise the zone weight threshold above its setting. A Y2
signal to the air handler will appear on the display screen and blower will ramp up to second
stage.
5.
Allow the unit to run in heating mode, a Y2 signal will appear and the second stage on the
condenser will energize.
6.
Allow the unit to continue to operate and a W1 signal will appear on the display screen and
energize the irst stage back-up heat.
7.
Allow the unit to continue to operate and a W2 signal will appear on the display screen and
energize the second stage back-up heat.
8.
Turn thermostats to off and allow system to cycle off, do not reinstall LAT sensor at this time.
9. Reset the demo mode to false in the Set-up Wizard.
Note: With electric resistance backup heat the outdoor air temperature must be below the temperature set
for the resistance lockout temperature.
Cooling Stage threshold checkout
1.
With the LAT sensor removed from the ductwork initiate a call for cooling from any zone.
2.
The Y1, G and O signal will appear on the display screen and send a
f
irst
stage cooling signal to the air
handler and the condenser.
System Commissioning
