Residential Wood Pellet Boilers: Fully-Automated, Proven Reliability

Pellergy Wood Pellet Boilers: Alpa Series

Pellergy Wood Pellet Boilers: Alpha Series

Pellergy’s Alpha series wood pellet boilers are one of the most advanced, efficient, and low maintenance wood pellet boilers available in the world. They are compact in design, integrating a 330 LBS hopper directly into the boiler itself for manual feed, or a vacuum transfer system for automated bulk feeding the boiler with pellets. The wood pellet boiler bulk feed system can be fitted with a single suction probe for use with Pellergy’s fabric bulk bins, or up to three suction probes and an auto changeover unit for custom built bins or even a bulk pellet storage bunker.

Pellergy’s Alpha series wood pellet boilers are a fully automatic system that incorporates:

• Fully automated burn chamber cleaning and ash removal
• Fully automated heat transfer surface cleaning
• Fully automated ash removal with an integrated ash collection box to minimize required maintenance
• Firing rate modulation and advanced Thermocontrol allowing the boiler to fire down to 30% of its rated output eliminating the need for costly buffer tanks
• 86% Sustained efficiency
• Standard North American Wiring: No Voltage Converters, No 50Hz Motors to fail.

Pellergy’s Alpha series wood pellet boilers incorporate one of the most advanced ignition systems on the market with a dual ignition element design. Having built in redundancy in the ignition system is unique and ensures the highest level of reliability.

The boilers will be certified to UL-391, CAN/CSA-B366.1-11 and EN-303.5. These wood pellet boilers will be referred to as the Pellergy Alpha Series.


Pellergy Alpha Wood Pellet Boilers cut-away

Figure 1.1: Pellergy Alpha Wood Pellet Boiler Cutaway

 

 

The Alpha Wood Pellet Boilers Concept of Operation

The cutaway drawing in Figure 1.1  shows the Pellergy Alpha boiler with integrated vacuum transfer system for use with bulk pellets. Dimensional data on the units can be found in Table 1.1 below. The concept of operation of the system is very similar to many of the other European designed and built systems available today with the added features of a unique burn chamber design for automated cleaning, the incorporation of a dual ignition element and an integrated ash container with a convenient handle and wheels for ease of routine maintenance.

 

 


Alpha Wood Pellet Boilers Burn Chamber

The Pellergy Alpha Wood Pellet Boiler Burn Chamber Design

The Alpha Wood Pellet Boilers Unique Burn Chamber Design

The Pellergy Alpha boiler burn chamber utilizes a unique and robustly engineered system consisting of two superimposed metal discs. The high temperature stainless steel discs incorporate an engineered hole pattern. By rotation of the upper disc, these holes are opened and closed. Ash lying on the “grate” is agitated, broken up and can fall below to the ash auger system. This system has been proven in tens of thousands of systems across the globe and hundreds in the US and Canada.


Figure 1.3: The Pellergy Alpha Wood Peller Boilers Basic Installation with Bulk Pellet Storage

Figure 1.3: The Pellergy Alpha Wood Pellet Boiler Basic Installation with Bulk Pellet Storage

Wood Pellet Boilers Installation

The installation of a Pellergy Alpha boiler is simple. The system has been engineered for true North American voltage: 120V AC, 60Hz. NO power converters, NO wiring for 240V AC, NO 50Hz motors nor controllers prone to failure.

With the incorporation of a single vacuum suction probe as shown in Figure 1.3 above, the Pellergy Alpha boiler can run for weeks, even months with no routine maintenance other than emptying the ash box. The single vacuum suction probe installation works well with an outdoor storage silo as well.

Figure 1.4: Pellet Storage Room with Three Suction Probes Feeding a Single Pellergy Alpha Wood Pellet Boilers

Figure 1.4: Pellet Storage Room with Three Suction Probes Feeding a Single Pellergy Alpha Wood Pellet Boiler

In larger storage rooms, or where more efficient pellet removal is desired, an auto changeover unit can be installed and accommodate three vacuum suction probes as shown in Figure 1.4. In this installation, the auto changeover unit will pull pellets from each probe equally.

Where installations require larger than the output of one Pellergy Alpha boiler, multiple boilers can be installed and cascaded through the use of a boiler management system. The Pellergy Alpha boiler controls accommodate all standard US and Canadian boiler management systems and require only a simple normally open contact to activate. Figure 1.5 shows the installation of three Pellergy Alpha boilers, each pulling pellets from a single pellet storage room configured with an auto changeover unit. Through cascading multiple smaller boilers, a space can be heated at peak efficiency throughout even the shoulder months of the heating season.  More information is available in the Alpha Boiler brochure.

Figure 1.5: Three Pellergy Alpha Wood Pellet Boilers set up for Cascade Operation, Each with Three Vacuum Suction Probes

Figure 1.5: Three Pellergy Alpha Wood Pellet Boilers set up for Cascade Operation, Each with Three Vacuum Suction Probes