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EASY HEAT, EFFORTLESS COMFORT.

The new Evergreen boiler works the way you need it – for the long run. For single or multi-boiler installation with ZoneStacking™ up to 24 zones – no need for an extra zone panel. Simple wall or floor mount options.

It’s everything you’ve hoped for in heating with easy setup and maintenance, durable design and flexible functionality.

DURABLE

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FEATURES

  • Stainless Steel Fire Tube Heat Exchanger with non-metallic base
  • Floor Standing Boiler with optional wall mount kit
  • Sizes 220MBH, 299MBH, 399MBH
  • Modulating Condensing Boiler with 10:1 Turndown
  • 95% AFUE (220/299); 96.5% Combustion Efficiency (399)
  • 4 Pump/Auxiliary Outputs (Example: 1 boiler loop pump +3 zone pumps)
  • Up to 8 Multiple Boiler Control with lead/lag rotation
  • Modbus® to BMS connectivity
  • Each input can be assigned to a priority (Up to 3 Priorities)
  • Multiple Inputs can be assigned one priority (Zone Based Control)
  • All Lag Boiler Inputs and Output can be used
  • 0-10 Volt Input (modulation or set point)
  • Configurable Auxiliary Input/Output System
  • Boiler Circulator Included

Stay effortlessly comfortable in any home environment with the new Evergreen boiler. The quiet operation of the Evergreen further enhances the sense of “invisible” heat, from pool heating to multiple in-home zones.

  • Ease of programmability makes achieving comfort simple.
  • For the homeowner who wants heating comfort while maintaining lower utility bills and reducing their carbon footprint, the Evergreen boiler is rated Most Efficient by Energy Star™ standards with an AFUE rating of 95%. This could qualify the homeowner for available local utility rebates, if available. The Evergreen provides a Low NOx of < 20 PPM, which adds to the greener environment sustainability.
  • Up to 24 programmable zones with ZoneStacking™ (multiple boiler system) with no external panel required.
  • The Evergreen ensures heating comfort capability through multiple zones, including running an indirect fired water heater. Weil-McLain also offers the highly efficient and durable AHRI Certified Aqua Plus Indirect Fired Water Heater, available in five sizes to suit any application.
  • The Evergreen’s modern design adds value to your home.

Familiar interface – New technology

As our technology has advanced to create smoother, more efficient operations, we’ve kept the interface of the Evergreen boiler familiar, simple to use and easy to learn.

For the light commercial customer who requires a multiple boiler setup, the Evergreen provides ZoneStacking – 24 zone capability without an additional external 3rd party control.

ZoneStacking reduces the installation costs and time while increasing reliability. With this advanced control feature, the Evergreen boiler maintains optimal efficiency through lead-lag rotation and balanced heat loading.

THREE SELECTABLE SEQUENCING MODES TO CHOOSE FROM

Series Sequencing

Quickest boiler goes to 100% before another boiler is turned on; output is achieved more quickly with less total burner hours

Parallel Sequencing

Efficiency and speed based on Base Rate High; Hybrid mode between Smart and Series modes; boilers will go to user-programmed base rate high before turning on the next boiler

SmartSequencing™

Most efficient maximizes part-load efficiency by turning on as many boilers as possible

PROGRAMMABLE PREFERENCES FOR MULTIPLE BOILER SETUPS

Multiple Boiler Sequencing

User selects what point one boiler stops modulating before turning on another boiler

Lead Lag Rotation

User selects which boiler turns on first and can choose based on burner hours, fixed rotation or no rotation

Input/Output Options

Input and outputs can be used for every boiler with up to 24 capable input/output pairs

Redundant Sensors

If one system supply or outdoor temperature sensor fails, there are backups. If backups fail, the system can still run on a special safety mode

Auxiliary Output Flexibility

Ability to control system circulators, combustion air dampers and/or other auxiliary system components

Simple Interface – Complex Calculations

Straightforward, user-friendly design with advanced technology.

What’s happening behind the scenes?

Complex calculations of the required energy to meet system demands is distributed across all the boilers in the network.

System maximizes user’s comfort by simultaneously meeting as many system demands as possible: When there are multiple requests on a cascaded boiler system, the control satisfies both local and network heating demands.

Setup is easy. The built-in wizard asks direct questions on setup, making customization easy and straightforward. Contextual help is also available on screen.

As the most advanced addition to the Weil-McLain® line of high-efficiency condensing boilers, the Evergreen™ is programmed to make installation, setup and maintenance faster and easier than ever.

Easy to Install

  • Setup wizard efficiently guides the installer through a single or multiple boiler installation in minutes
  • For the contractor, installer and/or service provider, the Evergreen has an easy to understand graphical user Interface and makes programming and monitoring operations simple
  • Wiring diagrams provided are clear and easily accessible

Easy to Use

  • Ability to control multiple boilers with lead-lag capability without an external device
  • Interactive diagnostic capability
  • Reliable operation
  • Easy to understand and monitor controls
  • Effortless heating and comfort in all zones

Easy to Maintain

  • Large, accessible panels for quick and easy maintenance checks
  • Interactive diagnostic capability provides a snapshot of the past and current operation parameters
  • Reliable operation of the complete heating system including radiant elements
  • Sentinel X100® inhibitor is included with the boiler to ensure the water chemistry is optimal for heating system efficiency

FLEXIBLE

EASY

Ease of Installation

For the contractor, installer and/or service provider, the Evergreen has easy to understand graphical user interface and makes programming and monitoring operations simple.

Ease of Use

  • Ability to control multiple boilers with lead-lag capability without an external device
  • Interactive diagnostic capability
  • Reliable operation
  • Easy to understand and monitor controls
  • Simultaneous heating in all areas

Ease of Maintenance

  • Interactive diagnostic capability provides a snapshot of the past operation parameters.
  • Reliable operation of the complete heating system including radiant elements.
  • Sentinel X100® inhibitor is included with the boiler to ensure the water chemistry is optimal for heating system efficiency.

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