Taco SR503-EXP User Manual

76
Wiring TACO LTA-2 or LF Series 24VAC Low Water Cutoff to
McDonnell & Miller Series WF2 Uni-Match Electric Water Feeder
UNI-MATCH
WATER FEEDER
MODEL WF2-U-24
24VAC
SUPPLY
50/60 Hz
H
N
NH
COM
NC NO
AC POWER
OUTPUT CONTACTS
NHW
123
BURNER
SWITCH POSITION #2
M&M
2
3
0R
Remove jumper between H and COM if using power source
other than burner circuit or when using mixed voltages.
Do not connect feeder to a manual reset LWCO.
Note on switch position:
Switch setting 1 (M&M), the feed cycle repeats
indefinitely. Position 2 and 3 gives one feed cycle.
If using the LTA-2 series, choose whichever position
best matches the application:
WF-2 switch to position 1
- 60 sec. delay, 90 sec. feed, repeats
WF-2 switch to position 2
- 90 sec. delay, 90 sec. feed
WF-2 switch to position 3
- 100 sec. delay, 90 sec. feed
Wiring TACO LTA-2 or LF Series 120VAC Low Water Cutoff to
McDonnell & Miller Series WF2 Uni-Match Electric Water Feeder
UNI-MATCH
WATER FEEDER
MODEL WF2-U-120
120VAC
SUPPLY
50/60 Hz
H
N
NH
COM
NC NO
AC POWER
OUTPUT CONTACTS
NHW
123
BURNER
SWITCH POSITION #2
M&M
2
3
0R
Note on switch position:
Switch setting 1 (M&M), the feed cycle repeats
indefinitely. Position 2 and 3 gives one feed cycle.
If using the LTA-2 series, choose whichever position
best matches the application:
WF-2 switch to position 1
- 60 sec. delay, 90 sec. feed, repeats
WF-2 switch to position 2
- 90 sec. delay, 90 sec. feed
WF-2 switch to position 3
- 100 sec. delay, 90 sec. feed
24 VAC LWCO Using Burner Circuit Power Source
Remove jumper between H and COM if using power source
other than burner circuit or when using mixed voltages.
Do not connect feeder to a manual reset LWCO.
120 VAC LWCO Using Burner Circuit Power Source

Taco SR503-EXP Specifications

General

Brand	Taco
Model	SR503-EXP
Category	Control Unit
Language	English