Hydrolevel VXT-24 Instructions page 2

Step 3 Wiring
Hydrolevel
Safgard Model 400 / CycleGard CG400
STANDARD WIRING
Note:
If there is no jumper installed on the low water cut-off
between 1 and P1, see ALTERNATE WIRING box.
Safgard Model OEM-24TD
STANDARD WIRING
Note:
If there is no jumper installed on the low water cut-off
between 2 and P1, see ALTERNATE WIRING box.
ALTERNATE WIRING
Safgard & CycleGard Models:
If there is no jumper installed between terminals 1 and P1 on the low cut-off
(between 2 and P1 on Model OEM-24TD), then the cut-off is powered by a
separate power source from the burner circuit and the following wiring must
be used: Connect a wire from the FEED terminal on the feeder to the A

terminal on the cut-off. Connect a wire from terminal H on the feeder to
Ž
the burner circuit hot. Connect a wire from terminal N on the feeder to
burner circuit common.
Float Style Control
Using the burner circuit to power the feeder
Using a separate power source for the feeder
Select the wiring diagram
low water cut-off installed on the boiler.
Consult boiler manufacturer's instructions for proper burner terminal connections.
IMPORTANT
To prevent over-feed-
ing and possible
flooding, when used
with the OEM-24TD,
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.
through below that corresponds to the
McDonnell & Miller
PS-800 Series
STANDARD WIRING
Note:
If there is no jumper installed on the low water cut-off
between H and C, see ALTERNATE WIRING box.
PS-800 Series
STANDARD WIRING
Note:
If there is no jumper installed on the low water cut-off
between 1 and 3, see ALTERNATE WIRING box.
ALTERNATE WIRING
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: Connect a wire from the FEED terminal on the feeder to the W
(4 on older models) terminal on the cut-off.
H on the feeder to the burner circuit hot.
on the feeder to burner circuit common.
Honeywell
Model RW-700 Guard Ring
– Newer Models
– Older Models
PS-800 Series:

Connect a wire from terminal
Ž
Connect a wire from terminal N