23
It is mandatory to activate the pump by the controls of the chillers.
NOTE
a1) Interconnection with single pump and use of a 3-way valve
Alternative concept for using a superior quality power pump for the system. A three-way valve where the bypass must be
discharged after the RLWT sensor. This adjustment is required to provide system stability and a more precise control.
The chiller does not have on its electrical switchboard a power system for the pumps, only signal sending to ON/
OFF. The pump power switchboard must be installed in the field. Do not use the terminal block of the chillers to
power the pump.
IMPORTANT
FIG. 17 : Typical Interconnection schematic drawing with a single 3-way valve pump
WFC
Mestre
01
Escrava
02
Escrava
08
REWT
RLWT
Entrada de
água
Saída de
água
Acionamento
da bomba
ULWT
ULWT
ULWT
WFC
WFC
* A entrada do by-pass deve ser após o sensor RLWT
Legenda:
Bomba
Válvula On/Off (24VCA)
Válvula controle de vazão
Válvula de três vias
Válvula de retenção
* The by-pass inlet should be after the RLWT sensor.
Pump
Check Valve
Flow Control Valve
3-ways Valve
Water
Outlet
Water
Inlet
Drive
Pump
Master
Slave
Slave
LEGEND:
