34
£
YP138 PROGRAMMER
The YP138 programmer offers burner operation similar to the YP100 programmer but with extended
functions that might enhance burner operation such as increased turndown. The YP138 programmer
makes use of additional inputs on terminals 16 and 21. Both terminals 16 (PILOT HOLD) and 21
(START INPUT) are line voltage inputs.
X
MV
S2
D
7
10
6
M
A
3
P
S1
L1
E
PILOT
MAIN
IGNITION
TRANSFORMER
DLYD
LOW FIRE
SWITCH
RECYCLING INTERLOCKS
NON-RECYCLING
RUNNING INTERLOCKS
BURNERLOGIX SYSTEM CONFIGURATION
8
SCANNER TERMINALS
YP300 SERIES
T
f
P
13
ALARM
BLOWER
W
FUEL VALVE
END SWITCH
NOT USED
MV
PV
11
12
5
FUEL
(5 SECS.)
MAIN
FUEL
MV
SV
7
X
6
PRIMARY
SECONDARY
OIL VALVE
OIL VALVE
L2
TERMINAL 5 - Interrupted Pilot Valve
TERMINAL 6 - Selectable intermittent/interrupted operation
TERMINAL W - Energized 5 seconds into AUTO
TERMINAL P - Selectable recycle/non-recycle operation
IMPORTANT:
A good earth
ground is
essential.
L2
/
N
Note: When Flame Rod is used
jumper S2 to grounding screw in
cabinet
VALVE
SUGGESTED WIRING DIAGRAM FOR YP300 PROGRAMMERS