40
TM SmartCool One 5057724 v1.0_08_2022
Unit to Unit Network Termination
Remote ON/OFF
For the use of Remote ON/OFF, 2 core screened cable 1mm² should be used to comply with electromagnetic
compatibility (EMC). Maximum cable length <30m (98.4 ft).
RxTx -
RxTx +
GND
RxTx -
RxTx +
GND
Panel Side
Customer Side
The plugged unit to unit network termination ensures that the connections are made
simultaneously. Failure to attach the cables in this way may cause damage to the controller.
NOTE
Drip Tray Drain P-Trap
A P-Trap must be included when connecting the drain to the coil drip tray. This allows water to drain properly while the
unit is running and prevents any air from bypassing the chilled water coil through the drain tube. The P-Trap should be
filled with a column of water during the commissioning phase.
mm
>100mm
When connecting the condensate drain to the coil drip tray, ensure a p-trap is included as detailed in the provided image
with a column of water. A minimum height difference
�
must be ensured and can be calculated as shown.
The purpose of this is to prevent air bypassing the chilled water coil through the drain tube and to allow condensate to
drain properly while the unit is running.
The p-trap should be checked during service and maintenance visits and topped up to ensure the minimum height
difference
�
is present.
1000
height difference (mm)
static pressure in the suction side of
the fan inlet (Pa)
density of water condensate (kg/m³)
acceleration due to gravity (m/s)
Example with static pressure of 450Pa
and 100% water condensate :
1000
1000
1000
1000
height difference (mm)
static pressure in the suction side of
the fan inlet (Pa)
density of water condensate (kg/m³)
acceleration due to gravity (m/s)
Example with static pressure of 450Pa
and 100% water condensate :
1000
1000
1000
�
= height difference (mm)
𝑝
= static pressure in the suction side of the fan inlet (Pa)
𝜌
= density of water condensate (kg/m3)
𝑔
= acceleration due to gravity (m/s)
Example with static pressure of 450 Pa and 100% water
condensate:
SmartCool™
Precision Air Conditioning
Ins
ta
lla
tio
n
