0312731_ST_400-1000_NLENFR_V3.0, 2018-01-04
31
3
Filling and draining
Note
These products can be installed as vented and unvented. This manual only
discusses unvented installations. For information about vented installations please
contact A.O. Smith.
Legend
1. pressure relief valve
(mandatory if mains water
pressure is too high)
3. T&P-valve
4. stop valve (recommended)
5. non-return valve
(mandatory)
6. circulation pump (optional)
9. drain valve
11. service stop valve
12. temperature gauge
(optional)
14. draw-off points
15. expansion valve
(mandatory)
16. expansion vessel
(mandatory)
A. cold water supply
B. hot water supply
C. circulation pipe
Installation Diagram
IMD-0550 R1.0
3.1 Filling
To fill the water heater, proceed as follows:
1. Open the stop valve (11) in the hot water pipe and, if present, the stop valves (4)
for the circulation pump (6).
2. Close the drain valve (9).
3. Open the nearest hot water draw-off point (14).
4. Open the stop valve (4) on the cold water side (A) so that cold water flows into
the water heater.
5. Completely fill the water heater. When a full water jet flows from the nearest
draw-off point, the water heater is full.
6. Bleed the entire installation of air, for example by opening all draw-off points.
7. The water heater is now under water supply pressure. There should now be no
water coming out of the inlet combination expansion valve or (if used) out of the
T&P valve (3). If there is, the cause might be:
-
The water supply pressure is greater than the specified value (1.6 "General
specifications"). Rectify this by fitting a pressure reducing valve (1).
-
The expansion valve in the protected cold supply set-up is defective or
incorrectly fitted.
Summary of Contents for ST-400
Page 4: ...Installatie Service en Gebruikershandleiding 4...
Page 6: ...Installatie Service en Gebruikershandleiding 6...
Page 8: ...Installatie Service en Gebruikershandleiding 8...
Page 11: ...0312731_ST_400 1000_NLENFR_V3 0 2018 01 04 11 Vooraanzicht doorsnede toestel IMD 1294 R0...
Page 12: ...Installatie Service en Gebruikershandleiding 12...
Page 22: ...Installation Service and User Manual 22...
Page 24: ...Installation Service and User Manual 24...
Page 28: ...Installation Service and User Manual 28...
Page 38: ...Notice d installation Mode d emploi Notice d entretien 38...
Page 40: ...Notice d installation Mode d emploi Notice d entretien 40...
Page 43: ...0312731_ST_400 1000_NLENFR_V3 0 2018 01 04 43 Vue de frontale des appareils IMD 1294 R0...
Page 44: ...Notice d installation Mode d emploi Notice d entretien 44...
