Connecting A Pump Start Relay - Irritrol Total Control Guia Del Usuario

CONNECTING A PUMP START RELAY

When a pump is to be operated by the controller, a compatible relay must be used. The
relay coil will be connected to the master valve (MV) terminal and must be rated for 24 V
a.c. at 0.5A maximum. The relay contacts will be connected to the pump start terminals
and must be rated for use with the particular pump.
NOTE:
Transient suppressors may be needed across the relay contacts in installations
using large pumps.
Caution:
Do not connect the master valve output terminal directly to the pump start
terminals. This will damage the controller.
Figure 6
Master Valve
(MV) Terminal
(24-Volt Side)
Valve Common
(VC/COM) Terminal
To connect the pump start relay:
1. Locate the blue terminal block labeled
2. Connect the master valve output terminal (
3. Connect the other side of the relay coil to the valve common (
Figures 5
See and
4. Insert the control wire into the terminal labeled
22
MV/PUMP
6
(24-Volt Side).
(High Voltage Side)
To Pump or
Larger Pump Starter
Power Source for Pump
.
MV
) to one side of the relay coil.
VC/COM
MV/PUMP
.
) terminal.