background image

30-Second

2-Minute

(Factory Setting)

4-Minute

6-Minute

8-Minute

10-Minute

The feed delay feature is designed to prevent boiler flooding by allowing time for condensate to return to the boiler prior to feed-
ing. If the returns and vents are in good condition, the 2-minute factory setting is usually sufficient. If for any reason condensate
takes longer to return to the boiler (such as old return lines or long horizontal runs), a longer delay setting should be selected.

NOTE: SELECT ONLY ONE DIPSWITCH CORRESPONDING TO THE DESIRED FEED DELAY.

Step 4  

Set the Feed Delay

Step 6  

Attach Service Tag

Write the installation date on the top of the VXT SERVICE TAG and hang it in a visible location on or near the VXT Water Feeder.

LWCO

(Factory Setting)

1-Gallon

2-Gallon

3-Gallon

4-Gallon

5-Gallon

LWCO Setting: The VXT feeder is shipped in the LWCO feed setting. When operating in this setting, the VXT will feed

only until the low water cut-off re-energizes the burner circuit (or a maximum of 5 gallons). This will restore boiler
operation, but on some applications may only be enough water to satisfy the 

minimum 

requirements. If additional

water is needed to reach the boiler’s 

normal 

operating level, the 1-Gallon to 5-Gallon settings should be selected using

the instructions below. DO NOT USE LWCO SETTING WITH SAFGARD MODEL OEM-24TD.

1 Gallon to 5 Gallon Settings: When the 1 to 5 Gallon settings are used, the feeder will continue to feed until the cycle

is complete, regardless of when the low water cut-off is satisfied. These settings should be used only when the LWCO
setting does not provide adequate water to restore the boiler to a 

normal 

operating level. Use the following instruc-

tions when choosing these settings:

Boilers with probe-type cut-offs: 

1. With power to the system on and the thermostat off, lower

the water level to approximately 1/2" below the probe. 

2. Press the FEED button on the water feeder and, using a

watch with a second hand, time how long it takes boiler
water to reach the 

normal 

operating level (Usually the

middle of the gauge glass unless otherwise specified by
the boiler manufacturer).

3. Round the time to the nearest minute and set the feeder

for the corresponding number of gallons. 

Example: 

If it takes 1 minute and 15 seconds for water to

rise from 1/2" below the probe to the normal operating
level, round to 1 minute and set the feeder for 1-Gallon.

4. Once the Feed Amount has been set, perform a test cycle

by lowering the water a second time (following procedures
in Step 1 above) and allowing the feeder to replenish the
water automatically.

Boilers with float-type cut-offs:

1. With power to the system on and the thermostat off, lower

the water level until 1/4" is visible in the gauge glass.

2. Press the FEED button on the water feeder and, using a

watch with a second hand, time how long it takes boiler
water to reach the 

normal 

operating level (Usually the

middle of the gauge glass unless otherwise specified by
the boiler manufacturer).

3. Round the time to the nearest minute and set the feeder

for the corresponding number of gallons. 

Example: 

If it takes 2 minutes and 10 seconds for 

water to rise from 1/4" in the gauge glass to the normal
operating level, round to 2 minutes and set the feeder for
2-Gallons.

4. Once the Feed Amount has been set, perform a test cycle

by lowering the water a second time (following procedures
in Step 1 above) and allowing the feeder to replenish the
water automatically.

NOTE: SELECT ONLY ONE DIPSWITCH CORRESPONDING TO THE DESIRED FEED AMOUNT.

CAUTION: BOILER FLOODING CAN OCCUR IF THE FEEDER IS NOT SET PROPERLY. 

UNLIKE OTHER FEEDERS, THE 1-GALLON TO 5-GALLON SETTINGS WILL FEED THE FULL 

CYCLE REGARDLESS OF WHEN THE WATER REACHES THE LOW WATER CUT-OFF.

Step 5  

Set the Feed Amount

Summary of Contents for VXT-24

Page 1: ...EED COUNTER page 4 UNDERFEED PROTECTION page 4 LOCKOUT FLOOD PROTECTION page 4 INSTALLATION WARNING To prevent electrical shock or equipment damage power must be off during installation or servicing of the control To pre vent serious burns the boiler should be thor oughly cooled before installing or servicing control Only qualified personnel may install or service the control in accordance with lo...

Page 2: ...d 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 the burner circuit...

Page 3: ... system on and the thermostat off lower the water level to approximately 1 2 below the probe 2 Press the FEED button on the water feeder and using a watch with a second hand time how long it takes boiler water to reach the normal operating level Usually the middle of the gauge glass unless otherwise specified by the boiler manufacturer 3 Round the time to the nearest minute and set the feeder for ...

Page 4: ...ner shows signs of mineral deposits collect ing on the screen install a Hydrolevel Feed Valve Service Kit Part No 45 345 Every 3 Years Install Hydrolevel Feed Valve Service Kit Part No 45 345 Note If hardened calcium deposits have formed on the brass surface inside the valve replace the valve Part no 45 343 12 Years Replace the VXT Series Water Feeder after 12 years of service Diagnostics Trouble ...

Reviews: