Hydrolevel, 45-122, Water Feeder, 100 deg F, 150 psi, 1 gpm

Hydrolevel VXT-120 Automatic Water Feeder – 120V Model for Steam Boiler Applications

The Hydrolevel VXT-120 (model 45-122) is a 120V automatic water feeder designed for use with residential and light commercial steam boiler systems. It operates in conjunction with low water cut-offs—both probe and float types—to maintain proper water level and prevent dry-fire conditions. The VXT-120 is equipped with an integrated digital feed counter to assist in monitoring system make-up water usage over time.

This feeder supports programmable feed delays, onboard diagnostics, and lockout protection to improve reliability and system efficiency. The 120V configuration is commonly used in systems with line-voltage burner control circuits.

System Features

• Voltage Rating: 120 VAC
• Operating Temperature: Up to 150°F
• Maximum Pressure: 150 PSI
• Flow Rate: 1 GPM

Key Capabilities

• Works with all standard probe and float-type LWCOs
• Digital display records automatic and manual feed events for diagnostic review
• Feed volume adjustable from 1 to 5 gallons or “LWCO” timed fill
• Programmable feed delay (30 seconds to 10 minutes) allows condensate return before refill
• Underfeed recovery cycle ensures sufficient fill if initial feed is inadequate
• Lockout feature halts operation after two unsuccessful feed cycles
• LED diagnostic indicators provide system status and fault notifications

Installation Notes

The VXT-120 should be installed by qualified personnel. Installer must verify compatibility with the boiler's LWCO type and electrical system voltage. The feeder should be plumbed into the make-up water line and wired in accordance with Hydrolevel's instructions and local code requirements. Set delay and volume parameters as appropriate for system size and condensate return characteristics.

Contractor Reference

Hydrolevel's VXT-120 provides make-up water tracking, which is critical for identifying abnormal consumption patterns. This data supports early diagnosis of potential leaks, undersized returns, or system imbalance. It is frequently specified in preventative maintenance and retrofit applications for steam systems requiring 120V line-voltage feeders.