DriSteem LX Series User Manual (English)

Questions and Answers:

J
Jennifer KnightAug 16, 2025
How to fix DriSteem Humidifier that will not turn on?
- K
  kimberly83Aug 16, 2025
  If your DriSteem Humidifier isn't turning on, here's what you can check: * First, ensure the main power supply is active and the switch is on. * Verify the correct voltage across all terminals. * Inspect all field-wired terminal connections, including wiring and settings on accessories like the high limit switch and airflow proving switch. * For internal connections, power off the humidifier at the terminal block (follow the shutdown procedure first) and check that terminals from internal components are securely attached to the circuit boards. * Also, check the reset switch on the transformer, in case there's no power to the 24V control circuit.
M
Mariah AndersonAug 19, 2025
What to do if DriSteem LX constantly drains water?
- M
  Michael FloresSep 12, 2025
  If water is constantly running down the drain of your DriSteem Humidifier, consider the following: * Check the drain valve function using Test Mode. * Inspect for any debris preventing the drain valve from closing; remove the drain block plug to clean the valve. * Examine internal hoses for kinks or blockages if water flows from the overflow port. Also, check the level probe function. * If you have a mechanical tempering device, the tempering valve might have failed and need replacement.
M
Mitchell MooreAug 22, 2025
Why is my DriSteem LX not satisfying demand?
- L
  Lisa BarronAug 22, 2025
  If your DriSteem Humidifier isn't satisfying the demand, here are a few things to check: * Ensure that the control setting isn't too low; adjust it to a higher setting. * If there's a significant amount of hard water scale on the primary heat exchanger, perform a tank cleaning.
F
Frank WilliamsAug 26, 2025
How to stop water leaking from DriSteem LX?
- J
  John SharpAug 26, 2025
  If your DriSteem Humidifier is leaking water, take these steps: * Inspect all plumbing connections and fittings on the fill block manifold, and tighten them as necessary. * Check the internal hose clamp connections, repositioning and tightening clamps as needed. * Examine the steam hose connection on top of the tank, tightening the clamp or piping if required. * Consider replacing the gasket if the tank gasket life has exceeded.
S
Sonya BuckleyAug 28, 2025
How to reduce excess humidity from DriSteem Humidifier?
- J
  Joseph ScottAug 28, 2025
  If you're experiencing excess humidity from your DriSteem Humidifier: * Adjust the control to a lower setting.
A
Abigail FisherAug 31, 2025
What to do if DriSteem LX will not fill?
- C
  chasejimmyAug 31, 2025
  If your DriSteem Humidifier isn't filling, here’s what to check: * Ensure the field-installed supply water shut-off valve is open. * Check the fill valve function using the Test mode. * Confirm you have adequate water pressure and flow.
A
Alexandra WelchSep 3, 2025
Why does my DriSteem Humidifier make a gurgling sound?
- K
  Kathleen TaylorSep 3, 2025
  A gurgling sound in your DriSteem Humidifier can be due to a few reasons: * Excess condensate in the steam hose: Ensure the steam hose has a constant downward slope to the humidifier or to tees and traps in low spots. * Also, confirm the drain piping is correctly installed, including a vacuum breaker. * A low rumbling noise is normal when the humidifier is tempering drain water.
H
Hannah GoodwinSep 6, 2025
What to do if DriSteem LX Humidifier will not drain?
- J
  justin88Sep 6, 2025
  If your DriSteem Humidifier isn't draining, here’s what you should do: * Remove the drain block plug and clean any debris from the drain valve that may be blocking the outlet port. * Check the valve function using Test mode.
J
julian05Sep 9, 2025
Why is my DriSteem Humidifier draining hot water?
- M
  mackenziebrownSep 9, 2025
  If your DriSteem Humidifier is draining hot water, it could be due to a malfunctioning drain tempering device. You should: * Confirm that tempering is turned on. * Check that the fill and drain valves are operating correctly. * Confirm the tempering sensor is operating correctly.
R
Regina MontgomerySep 12, 2025
Why does the fill valve on my DriSteem Humidifier make a banging sound?
- J
  John LeachSep 12, 2025
  If the fill valve on your DriSteem Humidifier is making a banging sound, it could be due to water hammer from line pressure. Ensure the water supply line does not contact ductwork and consider installing a shock arrestor.

DriSteem LX Series Specifications

General

Brand	DriSteem
Model	LX Series
Category	Humidifier
Language	English

Summary

Warnings and Cautions

Fire or Explosion Hazard

Hazards related to fire and explosion, with safety instructions.

If You Smell Gas

Actions to take if gas is detected, emphasizing safety precautions.

Attention Installer

Installation requirements for qualified technicians and adherence to codes.

Warnings and Cautions (Continuation)

Carbon Monoxide, Fire, Explosion, and Electrical Shock Hazards

Potential hazards from CO, fire, explosion, and electrical shock.

Carbon Monoxide, Fire, Explosion, and Electrical Shock Hazards (Continued)

Further details on hazards associated with CO, fire, explosion, and shock.

Hot Surfaces and Hot Water

Hazards associated with extremely hot surfaces and water, with burn prevention advice.

Disconnect Electrical Power

Procedure for disconnecting electrical power before maintenance.

Specifications

Water

Supply Water Guidelines

Guidelines for supply water quality impacting humidifier reliability and maintenance.

Water Level Control

Explanation of the three-probe conductivity system for water level management.

Water (Continuation)

DriSteem Supply Water Guidelines (Table 13-1)

Guidelines for chlorides, hardness, pH, and silica in supply water.

Supply Water Requirements (Table 13-2)

Requirements for supply water pressure, flow rate, and temperature.

Fill and Drain Rates (Table 13-3)

Table detailing fill and drain rates for various GTS humidifier models.

Indoor Dimensions (Continuation)

Indoor Unit Dimensions (Table 17-1)

Table providing specific indoor unit dimensions (A-V) for various models.

Location and Clearance Recommendations

Finding a Location

Specific considerations for finding a suitable location for the humidifier.

Location and Clearance Recommendations (Continuation)

LX Series Clearance Recommendations (Indoor Units) (Figure 19-1)

Diagrams showing required clearances for indoor humidifier installations.

LX Series Clearance Recommendations (Outdoor Units) (Figure 19-2)

Diagrams showing required clearances for outdoor humidifier installations.

Optional Floor Stand Mount (Models 50, 75, 100, and 150 only)

Optional Wall Mount (Models 50, 75 and 100 only)

Piping: Connection Details

Piping: Connection Sizes

Piping: Steam

Piping: Supply Water

Piping: Drain

Piping: Drain (Continuation)

Piping: Optional Mechanical Drain Water Tempering (Continuation)

Replacing the Drain Manifold with Drain Water Tempering Assembly

Procedure for replacing the drain manifold with a drain water tempering assembly.

Piping: Flue Gas Condensate Drain

Piping: Gas

Piping: Gas (Continued)

Gas Leak Testing

Procedures and precautions for testing gas supply piping systems for leaks.

Venting: General

Venting: General (Continuation)

Installation Requirements (WARNING)

Mandatory installation by qualified technicians and adherence to codes.

Equivalent Vent Lengths (Table 46-1)

Table providing equivalent vent lengths for various elbows and fittings.

Approved PVC/CPVC Flue Gas Vent Pipe and Fittings (Table 43-1)

List of approved vent pipe and fittings materials for US and Canada.

Venting Pressure (Table 46-2)

Venting: Room Air Combustion

Room Air Combustion

Air for Combustion (WARNING)

Warning about contaminants in combustion air and their health impacts.

Venting: Room Air Combustion (Continuation)

Combustion Air Quality (List of Contaminants) (WARNING)

Sample list of contaminants to avoid in combustion air to prevent hazards.

Venting: Sealed Combustion

Sealed Combustion (Combustion Air from Outside the Building)

Requirement for Manifolding Sealed Combustion Piping Runs (WARNING)

Warning on manifolding sealed combustion piping to prevent CO hazards.

Venting: Vertical

Venting: Vertical (Continuation)

Venting: Sidewall

Sidewall Vent Termination (WARNING)

Warning regarding sidewall vent termination adjacent to building extensions.

Venting: Sidewall (Continuation)

Maximum Vent Piping Lengths (WARNING)

Warning against exceeding maximum vent piping lengths to prevent freezing.

Wiring

Grounding (WARNING)

Requirements for proper electrical grounding to ensure personal safety.

Fire Hazard (WARNING)

Warning about fire hazards from improper wiring connections, emphasizing copper wire use.

Outdoor Enclosure: Location

Outdoor Enclosure: Dimensions

Outdoor Unit Dimensions (Table 61-1)

Outdoor Enclosure: Mounting

Outdoor Enclosure: Piping

Supply Water and Drain

Outdoor Enclosure: Electrical

Outdoor Unit Amps and Weights (Table 64-1)

Outdoor Enclosure: Freeze Protection Piping

Installation Checklist

Mounting

Interconnecting Steam Piping

Supply Water

Tank Drain

Flue Gas Condensate Drain

Installation Checklist (Continuation)

Gas

Venting

Wiring and Controls

Outdoor Enclosure

Operation Overview

Operational Features

Start-up

Start-up Checklist

Commissioning Checklist

Start-up (Continuation)

Water Quality and Maintenance

Preparing for Maintenance

Cool Down Procedure

Inspection and Maintenance

Annual Pre-seasonal Inspection

Inspection and Maintenance (Continuation)

Seasonal Start-Up

Mid-season / End-of-Season

Mid-season

End-of-Season

Burners

Tuning the Gas Valve

Burners (Continuation)

High-Fire Gas Valve Tuning

Low-Fire Gas Valve Tuning

Burner Maintenance Instructions

Removing the Combustion Assembly

Ignitor and Flame Sensor Rod

Removing the Heat Exchangers

Troubleshooting

Troubleshooting (Continuation)

GTS Humidifier (Models LX-50 through LX-150)

GTS Humidifier LX Series Replacement Parts (Models LX-50 through LX-150)

GTS Humidifier (Models LX-200, LX-250, and LX-300)

GTS Humidifier LX Series (Models LX-200, LX-250, and LX-300)

GTS Humidifier (Models LX-400 through LX-600)

GTS Humidifier LX Series (Models LX-400 through LX-600)

Electrical Parts

Electrical Parts (Continuation)

GTS Electrical Replacement Parts (Table 97-1)

Warranty

Two-Year Limited Warranty

Terms and conditions of the standard two-year limited warranty.

Related product manuals

DriSteem GTS LX Series

DriSteem LX Series User Manual

Table of Contents

Questions and Answers:

DriSteem LX Series Specifications

Summary

Warnings and Cautions

Fire or Explosion Hazard

If You Smell Gas

Attention Installer

Warnings and Cautions (Continuation)

Carbon Monoxide, Fire, Explosion, and Electrical Shock Hazards

Carbon Monoxide, Fire, Explosion, and Electrical Shock Hazards (Continued)

Hot Surfaces and Hot Water

Disconnect Electrical Power

Specifications

Water

Supply Water Guidelines

Water Level Control

Water (Continuation)

DriSteem Supply Water Guidelines (Table 13-1)

Supply Water Requirements (Table 13-2)

Fill and Drain Rates (Table 13-3)

Indoor Dimensions (Continuation)

Indoor Unit Dimensions (Table 17-1)

Location and Clearance Recommendations

Finding a Location

Location and Clearance Recommendations (Continuation)

LX Series Clearance Recommendations (Indoor Units) (Figure 19-1)

LX Series Clearance Recommendations (Outdoor Units) (Figure 19-2)

Optional Floor Stand Mount (Models 50, 75, 100, and 150 only)

Optional Wall Mount (Models 50, 75 and 100 only)

Piping: Connection Details

Piping: Connection Sizes

Piping: Steam

Piping: Supply Water

Piping: Drain

Piping: Drain (Continuation)

Piping: Optional Mechanical Drain Water Tempering (Continuation)

Replacing the Drain Manifold with Drain Water Tempering Assembly

Piping: Flue Gas Condensate Drain

Piping: Gas

Piping: Gas (Continued)

Gas Leak Testing

Venting: General

Venting: General (Continuation)

Installation Requirements (WARNING)

Equivalent Vent Lengths (Table 46-1)

Approved PVC/CPVC Flue Gas Vent Pipe and Fittings (Table 43-1)

Venting Pressure (Table 46-2)

Venting: Room Air Combustion

Room Air Combustion

Air for Combustion (WARNING)

Venting: Room Air Combustion (Continuation)

Combustion Air Quality (List of Contaminants) (WARNING)

Venting: Sealed Combustion

Sealed Combustion (Combustion Air from Outside the Building)

Requirement for Manifolding Sealed Combustion Piping Runs (WARNING)

Venting: Vertical

Venting: Vertical (Continuation)

Venting: Sidewall

Sidewall Vent Termination (WARNING)

Venting: Sidewall (Continuation)

Maximum Vent Piping Lengths (WARNING)

Wiring

Grounding (WARNING)

Fire Hazard (WARNING)

Outdoor Enclosure: Location

Outdoor Enclosure: Dimensions

Outdoor Unit Dimensions (Table 61-1)

Outdoor Enclosure: Mounting

Outdoor Enclosure: Piping

Supply Water and Drain

Outdoor Enclosure: Electrical

Outdoor Unit Amps and Weights (Table 64-1)

Outdoor Enclosure: Freeze Protection Piping

Installation Checklist

Mounting

Interconnecting Steam Piping

Supply Water

Tank Drain