Noritz CB180-DV, Руководство пользователя

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- Flushing the
Combi
Boiler
Flushing the Heat Exchanger of Combi Boiler is a complicated procedure. Refer to the following instructions carefully before attempting
the procedure.If you do not understand the procedure, contact an authorized technician or licensed professional. Keep in mind that
improper maintenance will void the warranty.
6. Turn on the pump to circulate the cleaning solution through the Combi Boiler for at least 1 hour at a rate of 4 gallons per minute.
7. Rinse the cleaning solution from the Combi Boiler as follows:
- Remove the free end of the drain hose (D1) from the bucket.
- Close service valve, (V4), and open shutoff valve, (V2). Do not open shutoff valve, (V1).
- Allow water to flow through the Combi Boiler for 5 minutes.
- Close shutoff valve (V2).
8. Disconnect all hoses.
9. Remove the DHW Cold Water inlet filter from the Combi Boiler
and clean out any residues.
10. Reinsert the filter and ensure the filter cap is securely tightened.
11. Connect electrical power to the Combi Boiler.
Maintenance procedures [Annually]
- Check piping. (gas and water)
Visually inspect for leaks around internal water piping. Also inspect external water piping, circulators, pressure relief valves and fittings.
Immediately call a qualified service technician to repair any leaks.
Leaks must be fixed by a qualified service technician immediately. Failure to comply with this instruction could result in severe personal
injury, death or substantial property damage.
- Check for operation of the pressure relief valves
Before proceeding, verify that pressure relief valve outlets has been piped to a safe place of discharge, avoiding any possibility of
scalding from Domestic Hot Water. If water flows freely, release the lever and allow the valve to seat. Watch the end of the pressure
relief valve discharge pipe to ensure that the valve does not weep after the line has had time to drain. If the valve weeps, lift the seat
again to attempt to clean the valve. If the valve continues to weep, contact your qualified service technician for inspecting the valve
and system. If water does not flow from the valve even though you have lifted the lever completely, the valve or discharge line may
be blocked. Shut down the Combi Boiler immediately. Call your qualified service technician to inspect the Combi Boiler and system.
Both DHW and Heating pressure relief valves should be checked.
- Check burner state
You can clean the exterior of burner. However, if you need to clean the inside of the burner, you should call an qualified service
technician.
Maintaining the Combi Boiler Chapter 4. – Maintenance
WARNING
Leaks must be fixed by a qualified service technician
immediately. Failure to comply with this instruction could
result in severe personal injury, death or substantial property
damage. This discharge line must be installed by a qualified
heating installer or a service technician.
3. Flushing the Combi Boiler
V1
V2
V4
V3
D1
D2
D3
1. Disconnect electric power to the Combi
Boiler.
2. Close the shutoff valves on both Domestic
Hot Water supply and DHW Cold Water
inlet lines. (V1 & V2)
3. Connect one hose ‘D1’ to the valve ‘V3’ and
place the free end in the bucket. Connect
one of the hoses ‘D3’ to the circulation
pump outlet and the DHW Cold Water inlet
line at the valve ‘V4’. Connect other hose
‘D2’ to the circulation pump inlet and place
the free end in the bucket.
4. Pour the cleaning solution into
the bucket. White Vinegar is suggested.
Place the drain hose (D1) and the hose
(D2) into the cleaning solution.
5. Open service valves (V3 & V4) on the
Domestic Hot Water supply and DHW Cold
Water inlet lines.