Raypak Hot Water Energy Management Control manual Sensor Override Test

DDSELECT - Differential Increasing DD lengthens the heater burn cycle; decreasing DD improves temperature stability. For instance: desired=140, deadband=1, heater turns off at 141 and on at 139. This deadband applies equally to all stages.

D1 SELECT - Temperature Delay Between Stages (In addition to differential setting)

This value causes successive output stages to come on according to the deviation to target tem- perature. D1 activates additional heaters or stages as demand increases. For example with a set- point of 140°F and a temperature delay of 1°F, stage 1 will fire at 140, stage 2 at 138, stage 3 at 136, etc., assuming 2°F deadband.

RL TEXT - Relay Logic (1-12)The default value is ++++++++++++. NOTICE: If you select minus (-) and the RayTemp loses power or fails, then the heater or pump will remain off!!! Edit text with SPACE, BACKSP, F4, and F5 to return to a plus setting.

SENSOR OVERRIDE TEST

ST SENSOR TEST This feature allows you to simulate any sensor temperature and observe the affect on desired temperature and relay sequencing. Press SPACE or BKSP to select a sensor, then override the actual sensor temperature by pressing F4 or F5. Each key stroke changes the tem- perature by one degree F. Press Shift+F4 or Shift+F5 to adjust the temperature by one-tenth of a degree (works with PTT). You can change any or all sensors values and then look at other screens. While in this mode all temperature values will be frozen at the values you select. To restore the actual sensor values, press SPACE or BKSP until Inactive ###.# appears. The RayTemp will auto- matically restore actual sensor values 30 minutes after exiting this screen.

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