Page 37 mrcool.com
Refrigerant Piping Connection
Before Test Run
Test Run Instructions
PASS/FAIL
Outdoor
(2):
Indoor
(2):
No electrical leakage
Unit is properly grounded
All electrical terminals
properly covered
Indoor and outdoor units
are solidly installed
Wall Hole Sleeve is
packed airtight
All refrigerant piping
connection
points DO NOT leak
Water drains properly
from drain pipe
All piping is properly
insulated
Unit performs COOL
function properly
Unit performs HEAT
function properly
Indoor unit louvers
rotate properly
Indoor unit responds
to remote controller
9
Test Run
You should perform the Test Run for at least 30
minutes.
1. Connect power to the unit.
2. Press the ON/OFF button on the remote
controller to turn on the system.
3. Press the MODE button to scroll through the
following functions, one at a time:
• COOL - Select the lowest possible temperature
• HEAT - Select the highest possible temperature
4. Let each function run for 5 minutes and then
perform the checks listed in the table to the right.
Only perform test run after you have completed
the following steps:
• Electrical Safety Checks - Confirm that the
unit’s electrical system is safe and operating
properly.
• Gas Leak Checks - Check all refrigerant
piping/line set connections and confirm that
the system is not leaking.
• Confirm that the gas and liquid (high and low
pressure) stop valves are fully open. If the valves
are not fully opened before the system is
turned on, damage could occur.
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