GoRex EXPERT
High efficiency · Reliability · Economy
Product description
The GoRex EXPERT is a high-efficiency steel water-jacket pellet boiler engineered for reliable, economical, and eco-friendly heating of single-family houses, small administrative buildings, workshops, and service facilities.
Designed and tested in accordance with EN 303-5:2012, it guarantees safety, efficiency, and long service life.
The unit is compatible with GoRex RB / RB STAR pellet burners and is available in 20 / 30 / 50 kW variants for different heating systems.
Featuring a three-pass high-efficiency heat exchanger and a 5.0mm steel combustion chamber, it delivers optimal combustion, low fuel consumption, and stable, condensation-free operation.
The burner can be mounted from three different sides for flexible installation.
Choosing a GoRex EXPERT pellet boiler offers modern, safe, and environmentally friendly heating with high efficiency, low emissions, and easy maintenance.
With correct installation and operation, the equipment provides reliable performance and comfort throughout the heating season.
89% efficiency
At nominal output - certified efficiency to EN 303-5:2012
Three-pass heat exchanger
Maximum heat transfer with minimum fuel consumption
5,0mm steel chamber
Thick-walled combustion chamber for long-term reliable operation
3 burner positions
Installation from three sides for easier adaptation to the installation room
No condensation
Design prevents condensation for stable operation
Low emissions
Eco combustion suitable for wood, agro and blended pellets
| Parameter | Unit | EXPERT 20 | EXPERT 30 | EXPERT 50 |
|---|---|---|---|---|
| Rated power | kW | 20 | 30 | 50 |
| Dimensions (H/W/D) | mm | 1200/560/620 | 1200/560/720 | 1200/700/820 |
| Weight | kg | 240 | 280 | 390 |
| Water volume | l | 100 | 125 | 170 |
| Thermosensor sleeve distance between inlet and outlet pipe A/B | mm | 540/955 | 540/955 | 585/955 |
| Distance between inlet and outlet pipe E/F | mm | 955/425 | 955/425 | 955/572 |
| Distance of the valve (PIC valve D3) from the inlet pipe C | mm | 265 | 265 | 408 |
| Inlet pipe D4 | inch | 1¼" | 1¼" | 1¼" |
| Outlet pipe D1 | inch | 1¼" | 1¼" | 1¼" |
| PIC valve D3 | inch | ½" | ½" | ½" |
| Flue diameter | mm | 148 | 148 | 180 |
| Thermosensor sleeve D2 | - | - | - | - |
Proper flue gas exhaust ensures the boiler's safety and long service life.
Flue diameter:
- EXPERT 20
- Ø148 mm
- EXPERT 30
- Ø148 mm
- EXPERT 50
- Ø180 mm
Requirements:
- Horizontal pipes: up to 3 m
- Minimum slope: 5%
- The chimney must have an inspection opening and insulation
- Incorrect draft can damage the auger
- Front: minimum clearance 500 mm
- Back and sides: 500 mm
- Top: 1000 mm
- Room volume above 40 m3
- Non-combustible walls and floor
- Fresh air access (opening 80 – 100 mm)
- Do not install in a bedroom, bathroom, or rooms with other solid/liquid fuel
- Installation must be performed by an authorized installer
Wood, agro and blended pellets
Poor pellet quality reduces efficiency and increases maintenance. We recommend ENplus A1 certified pellets.
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