Check that all cable sizes, circuit breakers and wire connections are correct before following below com-
missioning steps:
1. Press the power button once for starting; twice for closing. In On status, the light of power in-
dicator is on, while in OFF status, the light is off.
2. Match the correct fan speeds displayed on LCD controller. Press button for 6 seconds to enter
parameter settings and at this time the parameter number is shown in the middle of the screen,
press button to switch to parameter No. 23 (refer to parameters list in comming page) then
press to enter the parameter setting, default value flash at the right corner, press UP and
DWON buttons to change the value to be “1”(3 speeds control) then press button again to
confirm setting.
3. Then check the mode and fan speed switch. Press button to switch , or mode,
check whether the temperature of the corresponding mode is correct. Press to switch the fan
speed of and , check if the airflow is adjusted corresponding to high speed, medium speed or
low speed.
4. Check the operation of bypass. The default opening temperature of bypass is 19-21C (adjustable),
press button to check the temperature of . If the is 19-21C, the bypass will open auto-
matically. If the outdoor temperature is not within 19-21C, then adjust the bypass opening temper-
ature according the current temperature to check the bypass function.
5. Bypass open temperature setting: press more than 6 seconds to enter the parameter setting
mode. Press twice to switch the parameter number from 00 to 02, the value flashes shown at
the right corner, the default value is 19. Then press to modify the value according to the cur-
rent temperature by pressing up-down button and press to save the data. At the same time,
check the bypass is opened or not. Please remember to modify the bypass opening temperature to
19-21 after the commissioning.
Loose or incorrect wiring connection can
cause explosion or fire when the unit starts
to work. Use only rated power voltage.
Don’t put fingers or objects into vents of
fresh air or exhaust air supply. Injury may
be caused by the rotation of the impeller.
Don’t install, move or re-install the unit by
yourself. Improper action may cause unit
instability, electric shock or fire.
Don’t change, disassemble or repair the
unit by yourself. Improper action may cause
electric shock or fire.
Running the unit continuously in an abnormal
status may cause failure, electric shock or
fire.
Switch off the power and breaker when you
clean the exchanger.
Don’t site intake supply vent in hot and hu-
mid
conditions , as it may cause failure, current
leakage or fire.
Don’t put any burner directly facing the
fresh air discharge, otherwise it may cause
an insufficient burning.
Isolate power during extended off periods
Isolate power and take care when cleaning
unit. (Risk of electric shock)
Observe guidelines and regulations relating
to incomplete combustion when use is asso-
ciated with fuel burning appliances.
Clean the filter regularly. A blocked filter may
result in poor indoor air quality.
15
Commissioning
To Next Page
Loading...