Filling - A.O. Smith STE-1000 Installation, User And Service Manual

4
Legend
Unused numbers are not
applicable.
1. pressure reducing valve
(mandatory if the mains
water pressure is too
high)
2. inlet security group
(mandatory)
3. T&P valve (mandatory -
factory delivered)
4. stop valve
(recommended)
5. non-return valve
(mandatory)
6. circulation pump
(optional)
9. drain valve
11. service stop valve
(recommended)
12. temperature gauge
(recommended)
A. cold water supply
B. hot water supply
C. circulation pipe
Installation, User and Service Manual STE

Filling

Installation diagram
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 inlet valve of the inlet security group (2) so that the 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 security group or out of the T&P valve (3). If there is, the
cause might be:
- The water supply pressure is greater than the specified value
specifications").
- Rectify the by fitting a pressure reducing valve.
- The expansion valve in the protected cold water supply set-up is defective or
incorrectly fitted.
- The T&P valve is defective or incorrectly fitted.
T
(3.4.2 "General
83