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CONTROL FAMILIARIZATION
The System is configured using the circuit board jumpers and switches, and the front panel control potentiometers.
Open the front cover of the Boiler Control Box for access to the front panel. Remove the front panel to gain access to the
jumpers and switches on the Y-Series Electronic Boiler Control circuit board.
Refer to the Interior Jumper and Switches section of this manual (pg. 24) for detailed configuration instructions.
1. Last Stage Selector. Install the jumper pot (J2) shunt bar in the position that corresponds to the total
number of stages to be controlled.
2. First Stage Selector. Switch (S2); Place switches in the ON position corresponding to the first stage
of each boiler in the system. Switch position #1 should always be in the ON position.
3. Mode Selector. Switch (S3) determines the following:
A. Switch #1, R/M
OFF - Manual Lead-Lag selection
ON - Automatic Lead-Lag selection
B. Switch #2, 70°F OFF
OFF - Outdoor Reset Enabled
ON - 70°F Defeat Enabled, Outdoor Reset Disabled-used for domestic water installations.
C. Switches #3 Master/Slave Option
OFF - Designates the Y-Series as a Master Control (Normal)
ON - Designates the unit as a slave (used for ganged Y-Series controls controlling 9 to 24 firing stages)
D. Switch #4, No Min Set Point Switch
OFF - Minimum allowable Set Point of 105°F to reduce potential of condensing the boiler.
ON - Set Point can be reduced to 40°F for special applications (i.e. water source heat pumps, etc.)
E. Switch #5 (reserved)
F. Switch #6 (reserved)
G. Switch #7 (reserved)
H. Switch #8 (reserved)
4. Lead-Lag Selector, Rotary switch (S4) selects the lead stage for stage sequencing. (Applies only in manual
lead-lag mode when Mode Selector Switch (S3) Switch #1, is OFF) switch should point to first stage in multi
stage applications.
5. Output Over-Ride Switch (S5) provides Manual Override of the system control. Switches #1 through #8 turn
on the corresponding relay and stage. Switch #9 turns on the pump circuit. The other stages are inter-
locked with Switch #9 and will not fire unless the pump is on. Switch #10 is not used.
6. System Test Switch (S1) is a momentary switch which will cause status indicators to blink five times
then revert to normal indications. This tests the functions status of the micro-controller.
Reinstall the panel above indicator lights that cover the Y-Series Electronic Boiler Control Circuit board.
Refer to the CONTROL POTENTIOMETERS (KNOBS) section of this manual to set the initial system operating param-
eters. Set knobs to default values and fine tune if necessary.
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