Pavilion PV199DV Installation Manual page 82

For Single Unit
[Procedure 1. Flushing the Plate Heat Exchanger]
1. Open the front cover.
2. Connect the blue connector* marked "FLUSH"
for flushing near the Circuit Board.
* The connector color is blue and labeled "FLUSH".
Connect
FLUSH
3. Then the code "CCC" is displayed on the
Operation Display.
4. Turn on the circulating pump to circulate the
flushing solution through the Combi Boiler for 1
hour at a rate of 1.5 gallons per minute or more.
5.
CCC
The code "C60" is displayed on the
Operation Display when the Combi
Boiler detects the flow of the flushing
C60
solution.
When 1 minute passes, the code "C60"
C59
will change to "C59" on the Operation
Display.
When 1 hour passes, the code "C00" is
C00
flashing on the Operation Display.
Do not disconnect the blue connector
marked "FLUSH" for flushing.
NOTE Check whether the reverse
connection of the hose (H1) and (H3)
if the display number will not change.
In that case, the flow rate of the
flushing solution may be under 1.5
GPM.
6. Turn off the circulation pump.
82
Maintenance
Combi Boiler
Opera on Panel
Circuit Board
[Procedure 2. Cleaning the Plate Heat Exchanger]
The flushing solution needs to be rinsed and
cleaned out of the Combi Boiler.
Below is the way to rinse and clean the flushing
solution.
1. Remove both drain hoses (H2 and H3) from the
bucket. And then place the drain hose (H3) into
the sink or outside to drain.
2. Close the drain valve (V3) and then open the
Domestic Water Inlet valve (V1).
Do not open the Domestic Water Outlet valve
(V2).
3. Clean the Combi Boiler with fresh water for 3
minutes or more.
(Needs to have enough time to clean the Combi
Boiler.)
4. Close the drain valve (V4) and then remove the
drain hose (H3) from the drain valve (V4).
5. Remove the drain hose (H1) from the drain valve
(V3).
6. Disconnect the blue connector marked "FLUSH"
for flushing.
The code "C00" goes out on the Operation
Display.
Disconnect
7. Close the front cover.
8. Open the gas supply valve and Domestic Water
Outlet valve (V2).
9. CCheck for correct operation of the Combi
Boiler.
FLUSH