TriangleTube Marquis TWH180, User Manual

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15
- Flushing the Water Heater
Flushing the Heat Exchanger of the water heater is
required for optimal performance. Refer to the fol-
lowing instructions carefully before attempting the
procedure. If you do not understand the procedure,
contact an authorized technician or licensed profes-
sional. Keep in mind that improper maintenance can
void your warranty.
1. Disconnect electric power to the water heater.
2. Close the shutoff valves on both hot water outlet
and cold water inlet lines. (V1 & V2)
3. Connect one hose “D1” to the valve “V3” and
place the free end in the bucket. Connect another
hoses“D3” to the circulation pump outlet and the
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 instantaneous water heater cleaning
solution into the bucket. Place the hose (D1) and
hose (D2) to the pump inlet into the cleaning
solution.
5. Open service valves (V3 & V4) on the hot water
outlet and cold water inlet lines.
6. Turn on the circulation pump (Operate the pump
and allow the cleaning solution to circulate through
the water heater for at least 1 hour at a rate of 4
gallons per minute.)
7. Rinse the cleaning solution from the water heater
as follows:
- Remove the free end of the drain hose (D1) from
the bucket.
Maintenance
- Close service valve, (V4), and open shutoff valve,
(V2). Do not open shutoff valve, (V1).
- Allow water to flow through the water heater for 5
minutes.
- Close shutoff valve (V2).
8. Disconnect all hoses.
9. Remove the cold water inlet filter from the water
heater and clean out any residues.
10. Reinsert the filter and ensure the filter cap is se-
curely tightened.
11. Connect electrical power to the water heater.
Maintenance procedures [Every 6 Months]
- Check piping. (gas and water)
Visually inspect for leaks around internal water pip-
ing. Also inspect external water piping, circulators,
relief valve 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 sub-
stantial property damage.
- Operate relief valve
Before following the procedure, verify that relief valve
outlet has been piped to a safe place of discharge,
avoiding any possibility of scalding from hot water.
If water flows freely, release the lever and allow the
valve to seat. Watch the end of the relief valve dis-
charge 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 seat.
If the valve continues to weep, contact your quali-
fied 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
Water Heater immediately. Call your qualified service
technician to inspect the water heater and system.
D1
D2
D3
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.
WARNING
V3
V1
V4
V2