Taco SR503-EXP User Manual

Manufacturer Device or Series
Power Connections Output Contacts Remote Probes
Hot Neutral Common
To Burner
Circuit
To EWF’s LW
Terminal/Alarm
Probe
Probe
Preference
Taco LF & LT-1 Series H N COM NC NO P GND Taco LTA-2 & LN Series H N COM NC NO — — Taco LTR Series Red Wire White Wire Yellow Wire Yellow Wire — — — McDonnell & Miller
PS-801/851 (Older Models w/Red & Amber LEDs)
1 2 3 5 4 P or J2 Chassis GND
McDonnell & Miller
PS-801/851 (New Models w/Red & Green LEDs)
H N C B W J2 Chassis GND
McDonnell & Miller
PS-802/852 (Older Models w/Red & Amber LEDs)
H N C B W J7 Chassis GND
McDonnell & Miller
PS-802/852 (Older Models w/Red & Green LEDs)
H N C B W J3 Chassis GND
McDonnell & Miller Series 750 1 2 3 5 4 P Chassis GND McDonnell & Miller RB-122
H
(Black Wire)
N
(White Wire)
C
(Yellow Wire)
B
(Yellow Wire)
— — —
McDonnell & Miller RB-120 1 2 3 4 5 — — McDonnell & Miller RB-24 Red Wire White Wire Yellow Wire Yellow Wire — — — Hydrolevel 24 1 2 P1 P2 A — — Hydrolevel 170 H GN P1 P2 A — — Hydrolevel 1100 Red Wire White Wire Yellow Wire Yellow Wire — — — Hydrolevel 1150
H
(Black Wire)
N
(White Wire)
CUT-OFF
(Yellow Wire)
CUT-OFF
(Yellow Wire)
— — —
Hydrolevel
400, 500, 600, 700, 450, 550, 650, 750
1 2 P1 P2 A H3 Chassis GND
Hydrolevel
RW700 Series (Except RW700A1098)
L1 L2 — B A
2 Red Wires,
White Wire
Green Wire
Hydrolevel RW700A1098 T1 T2 — B A
2 Red Wires,
White Wire
Green Wire
Taco LTR, LN, LT-1, LTA-2 & LF Series Low Water Cutoff and Taco Electric Water Feeder Wiring Cross Reference
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Taco SR503-EXP Specifications

General

Brand	Taco
Model	SR503-EXP
Category	Control Unit
Language	English