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During a cold start, the heat emitters of the installation will be irrigated when the set temperature is reached; the
temperature rise of the installation will be carried out at minimum power.
Do not shut off the burner at full load to avoid temperature shock.
Do not hesitate to add buffer volumes to the plant's hydraulic system to avoid short operating cycles, especially
when the boiler is protected by an isolation plate heat exchanger. Regarding the regulation of the installation, we
recommend burner modulation parameters (PID) sufficiently slow to ensure stability and low temperature
variations, start / stop differentials / hysteresis must be reasonable in order to leave a range of operation sufficient
for the burner and to ensure its modulation (value +/- 4 ° C). All strategies must allow the burner to be started up
for an average operating time of 30 minutes.
The temperature variations of the boiler must be as low as possible to ensure the highest service life.
The first heating must allow the evacuation of moisture from concrete doors, it is necessary to avoid any heat
shock and adopt a rise in temperature as slow as possible.
Do not hesitate to adopt the burner's burner maintenance accessories to minimize structural vibration of the
burner assembly.
Unit monitoring
If the recommendations listed above (new installation or renovation) have been followed, the unit monitoring is
limited to:
- Checking the amount of make-up water (fill water volume + make-up water volume < 3 times the unit
volume)
- Checking the pH level (stable or slightly increasing)
- Checking the total hardness (stable or slightly decreasing)
We recommend monitoring these parameters two to three times a year. Note: Monitoring the quantity of make-up
water is critical to the long life of the unit.
If any of these parameters deviates from the above recommendations, refer to a water treatment specialist to
correct the problem.
Setting up a plate exchanger
If the recommendations listed above cannot be met, you can set up a plate exchanger to separate the primary
system from the secondary system, which protects the boiler from undesirable effects.
We reserve the right to make changes to dimensions and construction
Melbury HE, C 530 - 3000
8
Hamworthy Heating Limited – Dorset BH17 ONF
edition 12.2020
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