Test Run - Mitsubishi Electric CITY MULTI PKFY-WL NKMU-E Series Installation Manual

7. Test run

7.1. Before test run
► After completing installation and the wiring and piping of the indoor and outdoor
units, check for water leakage, looseness in the power supply or control wiring,
wrong polarity, and no disconnection of one phase in the supply.
► Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0 MΩ.
► Do not carry out this test on the control wiring (low voltage circuit) terminals.
B
Controller interface
MENU
4
en
Function buttons
7
16
A
C
Fig. 7-1
ON
RETURN SELECT
HOLD
OFF
3 2 1
8 9
0
Fig. 7-2
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0 MΩ.
Caution:
• Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power switch can
result in severe damage to internal parts. Keep the power switch turned on
during the operational season.
7.2. Air purging
7.2.1. The details of air purging
As for the details of air purging, please refer to the water circuit maintenance
manual included in the package of the HBC controller.
7.2.2. The air vent valve of indoor unit (Fig. 7-1)
(1) Remove the air purge valve cover.
(2) Twist the knob on the air purge valve several times to release the air.
* Hold "A" with your fingers and twist it 3 – 4 times.
A Air purge valve
B Air purge valve cover (Tightening torgue: 1.3 ± 0.3 N·m, 1.0 ± 0.2 ft·lbs)
C Screw
7.3. Test run
The following 2 methods are available.
7.3.1. Using wired remote controller (Fig. 7-2)
▌1 [ON/OFF] button
Press to turn ON/OFF the indoor unit.
▌2 [SELECT/HOLD] button
Press to save the setting.
When the Main menu is displayed, pressing this button will enable/disable the
HOLD function.
▌3 [RETURN] button
5
Press to return to the previous screen.
▌4 [MENU] button
Press to bring up the Main menu.
▌5 Backlit LCD
Operation settings will appear.
When the backlight is off, pressing any button turns the backlight on and it will
stay lit for a certain period of time depending on the screen.
6
When the backlight is off, pressing any button turns the backlight on and does
not perform its function. (except for the [ON/OFF] button)
▌6 ON/OFF lamp
This lamp lights up in green while the unit is in operation. It blinks while the
remote controller is starting up or when there is an error.
▌7 Function button [F1]
Main display: Press to change the operation mode.
Main menu: Press to move the cursor down.
▌8 Function button [F2]
Main display: Press to decrease temperature.
Main menu: Press to move the cursor up.
Menu screen: The button function varies with the screen.
▌9 Function button [F3]
Main display: Press to increase temperature.
Main menu: Press to go to the previous page.
Menu screen: The button function varies with the screen.
▌0 Function button [F4]
Main display: Press to change the fan speed.
Main menu: Press to go to the next page.