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4.1 Commissioning
Note: It is the responsibility of the installer to ensure that the appliance is properly
commissioned by a trained and competent technician. Failure to do so WILL invalidate
ALL warranties.
Before commissioning ensure that the combustion pot and ash pan are in place as they may
have been displaced during transport/installation (refer to Figure 14). Switch the appliance on,
ensuring all controls are calling for heat.
The combustion settings are factory set and cannot be altered, the combustion fan works under
negative pressure (draws exhausted air out of the combustion chamber) and is controlled by the
differential pressure sensor and lambda sensor fitted to the appliance. Fan speed will modulate
depending on the auger feed rate. As the combustion fan is used to both pre and post purge the
combustion chamber, a low minimum draft of 4pa is required.
Using a flue gas analyser, check the CO
2
content and the flue gas temperature once the
appliance is hot and in a stable operating condition. Testing while the appliance is still relatively
cold gives inaccurate results and leads to incorrect adjustments being made. The CO
2
level is
controlled by the combustion fan and is selfcorrecting and should not require alteration at
commissioning. However, if the CO
2
level is not within the range of 6 to 14% please contact
Warmflow.
If the flue gas temperature is above 140°C or a CO value above 400ppm consistently please
contact Warmflow. Please refer to Table 1 for flue gas temperatures at maximum and minimum
outputs.
The appliance has an anticondensation valve factoryfitted which must not be removed or
tampered with in any way. The valve is controlled by the appliance’s user interface controller
and will ensure a return temperature of 55°C to promote longevity of the heat exchanger.
Note: All product warranties will be invalidated if the appliance is not commissioned by a
Warmflow engineer or other trained and competent technician and the
installation/commissioning certificate (see Section 6 of this manual) completed and
returned to Warmflow within 30 days from the date of installation and 90 days from the
date code stamped on the appliance.
Additionally, to comply with building regulations, a copy of the completed
installation/commissioning certificate must be left with the householder.
4.2 Servicing
4.2.1 General Requirements
The appliance must be serviced at least annually or as indicated by the user interface controller
by a Warmflow Engineer or other competent technician. This is necessary in order to optimise
performance of the appliance and to ensure its efficiency and safety for the user. Additionally,
when servicing, special attention should be paid to the condition of the combustion pot, cleaning
knives and mechanisms, air turbulators, door insulation, sealing rope, ash pan, hopper door
seal and auger assembly. If found to be defective, they must be replaced.
