Manual
JAKKA Control Kit 4
5
www.jakkagroup.com
2.1.3.3
Electrical heating elements
Maximal 3 electrical heating elements can be connected.
Configuration 1:
1,2 or 3 heating elements after the WTU unit, in the supply air to room
duct. In this configuration
the heating elements are switched on basis of T1_indoor temperature and T3_setpoint.
Configuration 2:
1 heating element before the WTU unit in the fresh air inlet duct. 2 or 3 heating elements after the
WTU unit, in the supply air to room duct. In this configuration the heating elements 2 and 3 are
switched on basis of
T4_Room_sensor
temperature and
T3_setpoint
. Heating element 1 is switched on basis of
T2_sensor
<= -7.
The algorithm for the 3 electrical heaters is how higher the delta temperature how more power is selected.
For example Delta temperature from 10 degrees is full power.
Under table shows how the heaters are turned on and off with the same KW.
For example Heater 1 = 3 KW, Heater 2 = 3 KW, Heater 3 = 3 KW
Under table shows how the heaters are turned on and off with the different KW.
For example Heater 1 = 1 KW, Heater 2 = 2 KW, Heater 3 = 5 KW
Heater configuration is written in EEPROM (§2.5.3 Parameters).
Degrees
Degrees
Heater 1
Heater 2
Heater 3
kWatt
0
3,3
X
-
-
3
3,3
6,6
X
X
-
6
6,6
>10
X
X
X
9
Degrees
Degrees
Heater 1
Heater 2
Heater 3
kWatt
0
1,4
X
-
-
1
1,4
2,8
-
X
-
2
2,8
4,2
X
X
-
3
4,2
5,7
-
-
X
5
5,7
7,1
X
-
X
6
7,1
8,5
-
X
X
7
8,5
>10
X
X
X
8
2.1.3
Mode 3: HEAT
2.1.3.1
Fan
Fan speed default is medium if Mode is changed but can be changed with FAN button. The FAN button can select High,
Med and Low speed for the separated Supply fan and Exhaust fan. The values are not settable.
2.1.3.2
By-pass Valve
In HEAT mode the damper valve will be controlled in accordance with following conditions.
temp_MIN_Outdoor_Heating = 15
°C
temp_MIN_Outdoor_Heating = 35
°C
During the summer season the HEAT mode either can be manually selected with the remote control or automatically
controlled via the BMS (Building Management System) inputs When BMS J5(5-
13) is ON (closed) and season select
input J5(1-9) is open, the mode will be HEAT. The BMS input has priority over the remote control setting.
By-pass valve close conditions:
1.
T2_outdoor
<
T1_indoor
and
T3_setpoint
<
T1_indoor
and
T2_outdoor
<15°C
2.
T2_outdoor >
T1_indoor
and
T3_setpoint
>
T1_indoor
and
T2_outdoor
>35°C
3.
T2_outdoor
<
T1_indoor
and
T3_setpoint
>
T1_indoor
4.
T2_outdoor
>
T1_indoor
and
T3_setpoint
<
T1_indoor
By-pass valve open conditions:
1.
T2_outdoor
<
T1_3
and
T3_setpoint
<
T1_2
and
T2_outdoor
>15°C
2.
T2_outdoor >
T1_indoor
-3 and
T3_setpoint
>
T1_indoor -2
and
T2_outdoor
<35°C