Pioneer WYT-22 Series Installation & User Manual page 40

Ductless mini split system air conditioner / heat pump
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Electrical/Gas Leak Check and Test Run
Test Run
BEFORE TEST RUN
Only perform a test run after the following
steps have been completed:
Electrical Safety Checks
Confirm that the unit's electrical system is
safe and is operating properly.
Gas Leak Checks
Check all flare nut connections and confirm
that the system is not leaking.
Opened Valves
Confirm that both the gas and liquid
valves (high/low) are 100% fully opened.
PASS/FAIL?
No Electrical Leaks or Abnormal Noises
Unit is Properly Grounded
All Electrical Terminals Properly Covered
Indoor and Outdoor Units Securely Installed
All Pipe Connections Points Do Not Leak
AFTER TEST RUN COMPLETION
After the 10 boxes above have been checked as having PASSED, perform the following operation:
1. Using the remote control, return the system to a normal desired operating temperature.
2. Using insulation tape, wrap the indoor unit refrigerant pipe connections that were left uncovered
during the indoor unit installation process.
IF AMBIENT TEMPERATURES ARE TOO LOW TO RUN A COOLING TEST:
If outside temperatures are too low to permit COOLING mode on the remote, do the following:
1. Turn the unit on using the emergency button as depicted on Page 8.
2. Run the cooling mode test as normal, and turn the unit back off using the button when complete.
DOUBLE CHECK ALL PIPE CONNECTIONS
During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks that
were not present during your initial leak check. Take time during the Test Run to double-check
that all copper pipe connection points are leak-free. Refer to the Leak Check page for instructions.
Cooling mode pressures should be 120-155 PSI. Heating mode pressures should be 320-440 PSI.
Page 40
TEST RUN INSTRUCTIONS
The following test run should be performed
for 30 minutes:
1. Connect power to the unit.
2. Press the ON/OFF button on the remote
controller to turn it on.
3. Press the MODE button to scroll through
the following functions, one at a time:
• COOL – Select lowest possible temperature
• HEAT – Select highest possible temperature
4. Let each function run for 5 minutes, and
perform the following checks:
Water Drains From Drain Hose Properly
All Piping is Properly Insulated
Indoor Unit Responds to Remote Controller
Indoor Unit Louvers Work Properly
System Works in Both HEAT + COOL mode
8

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