Electrical And Gas Leak Checks; Electrical Safety Checks; Gas Leak Checks; Test Run - Bosch Climate 5000 RAC 2,6-2 OU Installation Manual

9

Electrical and Gas Leak Checks

Fig. 41.
1.17

Electrical Safety Checks

After installation, confirm that all electrical wiring is installed in accor-
dance with local and national regulations and according to the Installa-
tion Manual.
BEFORE TEST RUN
Check Grounding Work
Measure grounding resistance by visual detection and with grounding
resistance tester. Grounding resistance must be less than 0.10.
DURING TEST RUN
Check for Electrical Leakage
During the Test Run, use an electroprobe and multimeter to perform a
comprehensive electrical leakage test.
If electrical leakage is detected, isolate the unit immediately and call a
licensed electrician to find and resolve the cause of the leakage.
WARNING – RISK OF ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH LOCAL AND NATIONAL
ELECTRICAL REGULATIONS, AND MUST BE INSTALLED BY A
QUALIFIED ELECTRICIAN.
1.18

Gas Leak Checks

There are two different methods to check for gas leaks.
Soap and Water Method
Using a soft brush, apply soapy water or liquid detergent to all pipe
connection points on the indoor unit and outdoor unit. The presence of
bubbles indicates a leak.
Leak Detector Method
If using leak detector, refer to the device's operation manual for proper
usage instructions.
AFTER PERFORMING GAS LEAK CHECKS
After confirming that the all pipe connection points DO NOT leak, replace
the valve cover on the outside unit.
Climate 5000 – 6720886909 (2018/04)
10

Test Run

Before Test Run
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 flare nut connections and confirm that
the system is not leaking
• Confirm that gas and liquid (high and low pressure) valves are fully open
Test Run Instructions
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 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:
List of Checks to Perform
No electrical leakage
Unit is properly grounded
All electrical terminals properly
covered
Indoor and outdoor units are
solidly installed
No pipe connection points leak
Water drains properly from drain
hose
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
Table 9.
DOUBLE-CHECK 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 no refrigerant
pipe connection points have leaks. Refer to Gas Leak Check section for
instructions.
5. After the Test Run is successfully completed, and you confirm that
all checks points in List of Checks to Perform have PASSED, do the
following:
a. Using remote control, return unit to normal operating temperature.
b. Using insulation tape, wrap the indoor refrigerant pipe
connections that you left uncovered during the indoor unit
installation process.
Electrical and Gas Leak Checks
PASS/FAIL
Outdoor (2): Indoor (2):
23