Duct Work; Test Run - Mitsubishi Electric PEAD-RP-EA Installation Manual

8. Duct work

8. Duct work
• Connect canvas duct between unit and duct. (Fig. 8-1)
• Use incombustible material for duct parts.
• Provide full insulation to inlet duct flange and outlet duct to prevent condensation.
• Be sure to change the position of air filter to a position where it can be serviced.
<A> In case of rear inlet
<B> In case of bottom inlet
A Duct
B Air inlet
C Access door
D Canvas duct
E Ceiling surface
F Air outlet
G Leave distance enough to prevent short cycle
• Procedure for changing the rear inlet to the bottom inlet. (Fig. 8-2)
1. Remove air filter.
2. Remove the bottom plate and flange.
3. Fit the bottom plate to the rear of the body.
4. Fit filter to the underside of the body with screws.
A Flange
B Filter
C Bottom plate
D Screws for filter fitting
Caution:
An inlet duct of 850 mm or more should be construted.
To connect the air conditioner main body and the duct for potential equaliza-
tion.
10

9. Test run

9.1. Before test run
s After completing installation of the wiring and piping of the indoor and out-
door units, check for refrigerant leakage, looseness in the power supply or
control wiring, wrong polarity, and no disconnection of one phase in the
supply.
s Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0MΩ.
s Do not carry out this test on the control wiring (low voltage circuit) termi-
nals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0MΩ.
9.2. Test run
The following 2 methods are available.
9.2.1. Using wired remote controller (Fig. 9-1)
1 Turn on the power at least 12 hours before the test run.
2 Press the [TEST] button twice. ➡ "TEST RUN" liquid crystal display
3 Press the [Mode selection] button. ➡ Make sure that air is blown out.
4 Press the [Mode selection] button and switch to the cooling (or heating) mode.
➡ Make sure that cold (or warm) air is blown out.
5 Press the [Fan speed] button. ➡ Make sure that the fan speed is switched.
6 Switch the air direction by pressing the [Airflow] or [Louver] button.
➡ Make sure that horizontal outlet, downward outlet, and other air direction ad-
justments are possible.
➡ Check operation of the outdoor unit fan.
7 Release test run by pressing the [ON/OFF] button. ➡ Stop
8 After the checks, always turn off the power.
9.2.2. Using SW4 in outdoor unit
Refer to the outdoor unit installation manual.
9.3. Self-check
9.3.1. Wired remote controller (Fig. 9-2)
1 Turn on the power.
2 Press the [CHECK] button twice.
3 Set refrigerant address with [TEMP] button if system control is used.
4 Press the [ON/OFF] button to stop the self-check.
A CHECK button
B Refrigerant address
C TEMP. button
D IC:
Indoor unit
OC: Outdoor unit
E Check code
F Unit address