Hussmann CHINO TY3, Installation & Operation Manual

Page: 47 / 69

47
6 Manual RS8EP502 © Danfoss 12-2015 AK-CC 210
Applications
Here is a survey of the controller’s field of application.
A setting will define the relay outputs so that the controller’s
interface will be targeted to the chosen application.
On page 20 you can see the relevant settings for the respective
wiring diagrams.
Refrigeration control with one compressor
The functions are adapted to small refrigeration systems which
either may be refrigeration appliances or cold rooms.
The three relays can control the refrigeration, the defrost and the
fans, and the fourth relay can be used for either alarm function,
light control or rail heat control
• The alarm function can be linked up with a contact function
from a door switch. If the door remains open longer than al-
lowed there will be an alarm.
• The light control can also be linked up with a contact function
from a door switch. An open door will switch on the light and
it will remain lit for two minutes after the door has been closed
again.
• The rail heat function can be used in refrigeration or freezing
appliances or on the door’s heating element for frost rooms.
The fans can be stopped during defrost and they may also follow
a door switch’s open/close situation.
There are several other functions for the alarm function as well
as the light control, rail heat control and fans. Please refer to the
respective settings.
Hot gas defrost
This type of connection can be used on systems with hotgas
defrost, but only in small systems in, say, supermarkets – the
functional content has
not been adapted to systems with large
charges. Relay 1’s change-over function can be used by the
bypass valve and/or the hotgas valve.
Relay 2 is used for refrigeration.
Danf
os
s
84B2428.12
Danf
os
s
84B2430.13
Danf
os
s
84B2429.13
1
2
3
4
S3 and S4 are temperature sensors. The application will deter-
mine whether either one or the other or both sensors are to be
used. S3 is plac
ed in the air flow before the evaporator. S4 after
the evaporator.
A percentage setting will determine according to what the
control is to be based. S5 is a defrost sensor and is placed on the
evaporator.
DI1 and DI2 are contact functions that can be used for one of the
following functions: door function, alarm function, defrost start,
external main switch, night operation, change of thermostat ref-
erence, appliance cleaning, forced refrigeration or coordinated
defrost. See the functions in settings o02 and o37.