Pentair Smart pH, Installation Manual

Smart pH 

6

ELECTRICAL SPECIFICATIONS

The following electrical specifications tabled below must not be exceeded.

ITEM

DESCRIPTION

LIMIT

Input Voltage

Maximum Input AC Voltage

125 VAC

Input Current

Maximum Input Current

5 AMPS (AC)

Input current

Maximum Current for Single Relay

5 AMPS (AC)

Temperature

Minimum/Maximum Operating Temperature

30° - 110° F

Standby Current Current with Relay OFF, LED ON

Current with Relay OFF, LED OFF

50 mA (AC) Typical

30 mA (AC) Typical

Sensor Range

pH

4.22 - 9.78

CONNECTING THE 110VAC POWER SUPPLY

For cord connected installations wait to plug the cord in as the last step in the installation. For hard-wired instal-

lations make sure the circuit breaker is off and turn it on as the last step in the installation.    

Acu-Trol recommends 

having a licensed electrician perform the installation to ensure all national, state, and local codes are met.

RELAY BOARD CONTROL VOLTAGE SETTING

The relay comes set from the factory for 110 VAC control voltage. Changing the jumper on the relay will allow 

for different control voltages of 24V or for a Dry Contact Switch (see Fig. 2) 

Figure 2. Relay Jumper Settings 

GND

NOB

NOW

Factory Set-

ting

24 VAC

Dry Contact

Switch

If the feed pump has not been previously installed, follow the instructions included with the chemical feed 

pump. Some chemical feed pumps include a power cord and are ready to plug in. If a "pigtail" has been ordered with 

the Smart pH, simply plug the pump power cord into the "pigtail". If a "pigtail" is not installed the power cord from 

the pump will need to be modified. The list below provides overall installation recommendations:

1. 

Mount at least 10 feet from open water.

2. 

Install the pump below the level of the Smart pH and away from any other equipment or systems.  

3. 

Install close enough to the Smart pH for the feed pump power cords to reach. 

4. 

If  a plug is already on the pump, simply plug in the pump to the Smart pH "pigtail". If 

pigtails are not installed, you will need to hardwire the pump to the Smart pH relay board.

5. 

Route the supply power wires to the Smart pH through the lower fitting and attach to the appropriate 

relay terminals on the relay circuit board (see Section 5, "Wiring Diagram). If the wire ends were striped  

and not ferruled make sure that no frays of wire are out of the connector as this may lead to a short.

6. 

PVC conduit can also be used (in accordance with all national, state, and local codes). 

7. 

When installing metal conduit into the controller, a ground LUG should be used (in accordance with all  

national, state, and local codes) to connect the conduit to the relay board ground.

CHEMICAL FEED PUMP LOCATION