Step 3
Wiring
Select the wiring diagram
through
below that corresponds to the
low water cut-off installed on the boiler.
Consult boiler manufacturer’s instructions for proper burner terminal connections.
McDonnell & Miller
Note:
If there is no jumper installed on the low water cut-off
between 1 and P1, see
ALTERNATE WIRING
box.
Note:
If there is no jumper installed on the low water cut-off
between H and C, see
ALTERNATE WIRING
box.
Note:
If there is no jumper installed on the low water cut-off
between H and P1, see
ALTERNATE WIRING
box.
Note:
If there is no jumper installed on the low water cut-off
between 1 and 3, see
ALTERNATE WIRING
box.
Hydrolevel
Safgard Model 450 / CycleGard CG450
STANDARD WIRING
PS-800 Series
– Newer Models
STANDARD WIRING
PS-800 Series
– Older Models
STANDARD WIRING
Safgard Model OEM-170TD
STANDARD WIRING
IMPORTANT
To prevent over-feed-
ing and possible
flooding, when used
with the OEM-170TD,
the VXT should be set
with a Feed Delay of
10 minutes and a
Feed Amount of 1 to 5
gallons (see step 5).
DO NOT USE LWCO
SETTING.
Float Style Control
ALTERNATE WIRING
Safgard & CycleGard Models:
If there is no jumper installed between terminals 1 and P1 on the low cut-off
(between H and P1 on Model OEM-170TD), then the cut-off is powered by a
separate power source from the burner circuit and the following wiring must
be used:
➀
Connect a wire from the FEED terminal on the feeder to the A
terminal on the cut-off.
➁
Connect a wire from terminal H on the feeder to
the burner circuit hot.
➂
Connect a wire from terminal N on the feeder to
burner circuit neutral.
ALTERNATE WIRING
PS-800 Series:
If there is no jumper installed between terminals H and C on the low water
cut-off (terminals 1 and 3 on older models), then the cut-off is powered by a
separate power source from the burner circuit and the following wiring must
be used:
➀
Connect a wire from the FEED terminal on the feeder to the W
(4 on older models) terminal on the cut-off.
➁
Connect a wire from terminal
H on the feeder to the burner circuit hot.
➂
Connect a wire from terminal N
on the feeder to burner circuit neutral.
Using a separate power source for the feeder
Honeywell
Model RW-700 Guard Ring
Using the burner circuit to power the feeder
