20
PROGRAMMING TEMPERATURE – SR–2700 WITH CHEMICAL KIT
Programming the temperature is similar to programming the pH except that:
• The delay command is not used,
• The set point will be for temperature, and
• The ON Time command will be the Min Time ON.
The Min Time ON command will keep an MPS ON for as long as the time specified. When the temperature is below the set point, the
MPS will be ON and not turn OFF until the set point is reached. This command is used when the temperature typically increases very
slowly.
RELAY 9 – HEATER
NOTE:
Nos. 4 & 5 prevent the heaters from cycling ON and OFF.
No.
Command
Description
1
ON Sequences
Turns ON the sequence the commands are using.
2
Manual ON Time 00:02:00
The time that the relay stays ON when manually turned ON.
3
ON if Temp < 76.9
The temperature set point.
4
Min. Time ON 00:02:00
Turns the relay ON, or if the relay is turned ON by another relay, it will
stay on at least this long.
5
Min. Time OFF 00:02:00
The minimum amount of time before the heater will turn ON after it has
been off.
6
Overfeed 03:00:00
The maximum time that a relay can be ON in a 24-hour period of time.
7
Off if Switch 1 is Off
This relay controls the flow switch – it prevents the heater from being ON
if there is no flow.
8
No command
This relay is available for customization of the system.
APPENDIX D: DEFAULT PROGRAMMING
The following tables show the factory default programming.
