Raypak 240692 User Manual

Page 6

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CONTROL FEATURES

The Y-Series sequence panel includes:

Standard Indicator Lights:

Stages 1 to 8:

Red, indicates which stages are turned on.

Pump:

Green, indicates that the pump circuit is energized.

Call for Heat:

Green, indicates that a call for heat signal is present.

Control On:

Green, indicates outdoor temperature is below the Outdoor Cutoff Temperature

potentiometer setting and that the boiler will respond to a call for heat.

Setting Error:

Red, indicates one or more of the on-board settings is incorrect.

Sensor Error:

Red, indicates that the Water or Outdoor Temperature Sensor has an out-of-range reading.

Adjustment Knobs:

Reset Ratio:

0.12:1 to 8:1; determines how much the micro-controller calculated Target

Temperature will change for a given outdoor temperature change.

Control Band:

1°F to 10°F; the temperature above or below the Target Temperature at which the boiler

turns off and on.

Pump Off Delay:

0 to 10 min.; determines when the pump shuts off after entering Outdoor Cutoff mode.

.

Outdoor Cutoff

32°F to 200°F; a warm weather shutdown feature. When the outdoor temperature

Temperature:

exceeds this setting, the boiler will not fire unless placed in manual override mode.

Outdoor Cutoff

1°F to 10°F; the number of degrees below the Outdoor Cutoff (O/C)

Deadband:

Temperature which causes the O/C to reset.

Boiler On Delay:

0 to 5 min.; sets the time interval between sequential boiler start ups.

Stage On Delay:

0 to 60 sec.; determines the time delay between stages turning on.

Max. Water Temp.:

70°F to 235°F; the maximum value that the Target Temperature is allowed to reach.

Set Point:

40°F to 220°F; the system output temperature desired when the outdoor temperature is

70°F or, in domestic water applications, the desired water temperature.

Logic Test Button, Jumper and Switches:

System Test Button (S1):

initiates micro self test which causes the status indicator lights to blink 5 times

indicating the micro-controller is functioning properly.

Last Stage Jumper (J2):

selects the last active stage used for boiler control.

First Stage #1 Selector (S2):

designates the first stage of each boiler in a multi-boiler system. Switch

position #1 should always be on.

Mode Selector (S3):

switch #1 selects either Manual or Auto Lead-Lag Mode. Switch #2 provides an

Outdoor Reset defeat. Switch #3 configures the Y–Series for Master/Slave ganged

operation. Switch #4 allows the Set Point to be set below 105°F.

Bypass Switches (S5):

allows user to turn on any stage(s) regardless of current settings and

conditions if, and only if, the pump relay is already activated.

6

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