Taco SR501 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 SR501 Specifications

General

Model	SR501
Category	Control Unit
Input Voltage	120 VAC
Frequency	60 Hz
Switch Type	SPDT
Enclosure Rating	NEMA 1
Type	Relay
Operating Temperature	0°C to 40°C
Relay Output	24 VAC