Legacy products and support
Stoves and pellet boilers
Heatweb no longer manufactures Stoves and pellet boilers, but we service, repair and support every unit in the field. The documents below are kept from the Heatweb wiki.
Active + Hydro stoves pump running constantly
The Active + Hydro stoves Duo, Flux, Swing, Toba are currently available with either a standard type circulator, or ‘A’ Rated high efficiency type. This…
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Active + stoves air flow venturi - correct position
The Active + range of stoves utilise a pressure transducer and venturi located in the combustion air inlet pipe to monitor and calculate the correct…
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Active Hydro stoves - Standard Vs. HE Pump motherboards
The Active Hydro range of stoves were sold by MCZ with two different circulation pump options: A Standard type pump or a High Efficiency A Rated
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Compact 18-24 alarm A03: boiler or pellet hopper overheating
This article elaborates on the information given in the article 'Standard Alarm Codes and Fault Finding on MCZ RED Boilers', and should also be read in…
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Compact 18-24 circulation pump installation - pressure gauge connection
This article should be read in conjunction with the Compact circulation pump installation instructions to provide additional information relating to the…
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Compact 35 Pellet Boiler Test Rig
Data is recorded from all sensors to the SD card every 5 seconds, with data saved to the internet less frequently, typically 1 minute, but sometimes as…
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Compact 45 A03 Alarm
The Compact 45 pellet boiler, like all the other models on the range, features both a water pressure switch and air pressure switch that provide a safety…
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Compact pellet igniters - new style terminals
From approximately mid-2013 the spare part replacement igniters that MCZ are supplying for the Compact boiler range have spade connectors at the two…
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Compact Pump Group Installation Guide - electrical connections
Note: This document must be read in conjunction with the Compact Circulation Pump Kit Installation manual, and the User/Installation instructions for the…
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MCZ Hydro Stoves - A16 alarm
Note: The following processes can only be carried out by a suitably qualified Biomass
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MCZ Hydro stoves - External Thermostat problems or unusual operational characteristics
This article relates to any of the MCZ Active System Hydro stoves that have the external interface panel as seen below found at rear of boiler. These…
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MCZ Hydro stoves - Pump operating parameters
This article relates to the MCZ 'Active' Hydro range of products Ego, Musa, Suite, Club,
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MCZ products with MCS Certification
A list of all MCZ and Red boilers and stoves that have received MCS certification may be viewed on the MCS website by following the link
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MCZ/Red Hydro Stoves and boilers - minimum static pressure
For most of the MCZ / Red 365 Hydro stove and boiler ranges, the installation manuals state that when connecting the appliance to the hydraulic system and…
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Pellet sensor kit for auger fed systems - set up and operation
This article describes the set-up, operation and problem solving of the pellet level sensor equipment that is used in conjunction with a remote hopper and…
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Practika hopper auger and pellet pipe blockages
When installating a Practika, the position of the hopper in relation to the boiler is
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Primula, Margherita, Orchidea, Gardenia stoves - noise and vibration
There have been several reports of Primula stoves exhibiting excessive noise and vibration when operating at maximum power levels and/or the smoke fan has…
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Red boilers and Hydro stoves - System Configurations and operating characteristics
This article describes the operating parameters & characteristics of the circulation pump in the Compact range of boilers, depending on System…
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