KJM MANDÍK
–
Detailed operating instructions
M&C KJMPNO 07/2022
MANDÍK, a.s.,
30
Release
> 15 –
Fans are running, the reason is some overriding function.
StartingSpeed
(20%)
– specification of the fans speed during the auxiliary
Start
regime. If
MinSpeed
is higher than
StartingSpeed
, then
MinSpeed
will be used when the unit starts.
MixingCompensation
(
No
/Supply/Extract/Both
) – specifies which fan speed will be
compensated based on the mixing damper opening. It is primarily used on compact units
designed so that when the mixing damper is 100% open, the exhaust fan pushes air into the
closed exhaust damper.
CompensationTemperature
(
No
/
Temperature
/
Option
/
Fire&Smoke
)
–
fan
speed
compensation used to achieve the required supply air temperature by varying the fan speed
level. Compensation can be enabled at will:
Temperature
– speed compensation is enabled in the heating state when the supply
air temperature is low and the heating capacity cannot be increased any further. In
the cooling state, it is enabled when the supply air temperature is high and the
cooling capacity cannot be increased any further.
Option
– compensation is enabled if the supply air temperature is low and at the
same time any of the
CoolError
,
Defrost
or
HeatErr
options is set to
Compensation
.
Fire&Smoke
– compensation occurs if any of the previous conditions are met.
The following parameters affect when compensation is triggered:
On
(1 °C)
– specifies by how many degrees the supply air temperature must be below the
required value for compensation to be triggered.
Shift
(4 °C)
– shifts the supply air temperature for PID speed control. The shift is positive
in the heating regime and negative in the cooling one.
Delay
(60 s)
– time that the supply air temperature must be low and the heating output
cannot be increased to enable compensation.
PID–
Compensation
– contains control parameters for the operation of fans controlled to
the required supply air temperature, which determine the quality and speed of the
control. The values are set by default at the factory and should only be changed by a
person knowledgeable in control systems. The factory default values are:
TI = 60 s, KP = 8,
TD = 0 s.
CoolError
(
Regime
/
Compensation
)
– this is where the fan speed is defined when a cooling
fault occurs. When
Regime
is selected, the speeds stay at the level set by the regime or other