Tab.19 Standard ΔT values
Boiler model
Standard ΔT
Max. ΔT
Gas 120 ACE - 65
25 K
40 K
Gas 120 ACE - 90
25 K
40 K
Gas 120 ACE - 115
20 K
35 K
Increase the ΔT value using the GP021 parameter. When increasing the
ΔT, the control unit limits the linear flow temperature to 80 °C maximum.
This does not modify the value set for the maximum flow temperature. This
value can be adjusted using the CP000 parameter.
Important
If the heat demand is greater than 80 °C with the increased ΔT
value, Recom (or the service tool) will use a sub-status to
indicate that the limited flow temperature is active.
Always ensure that circulation is minimal (using a bypass or
low-loss header if necessary) to prevent the boiler from locking
out.
If a PWM-controlled central heating pump is controlled by the
boiler control panel, set the PP014 parameter to 2.
7.10 Points to check after commissioning
1. Remove the measuring equipment.
2. Put the flue gas sampling plug back in place.
3. Put the front casing back.
4. Bring the heating system temperature up to approximately 50°C.
5. Shut down the boiler.
6. After about 10 minutes, vent the air in the heating system.
7. Check that there are no leaks (hydraulic circuit, gas circuit, etc.).
8. Check that the boiler equipment is operating correctly.
9. Check that the thermostats are operating correctly and have the
correct settings.
10. Check the water pressure. Recommended pressure: between 0.15
and 0.2 MPa (1.5 and 2.0 bar).
11. Tidy away or scrap the various packaging items.
12. If necessary, affix the second type plate provided with the
documentation to a visible part of the boiler.
13. Affix the data plate supplied with the control box beside the boiler type
plate.
14. Instruct the user in the operation of the system, boiler and controller.
15. Inform the user of the periodicity of maintenance work to be carried
out.
16. Hand over all manuals to the user.
Commissioning of the boiler is now complete.
7 Commissioning
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MID _HMI T-control - Gas 120 ACE
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