A.O. Smith 28 30 50 60, Инструкция по установке и обслуживанию

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Introduction
Release R.1.3 UK 39
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4 Filling and draining
4.1 Introduction
Topics covered in this chapter:
•
Filling the appliance .
• Draining the appliance .
The components referred to in these paragraphs are illustrated in Figure 4.1 .
4.2 Filling the appliance
4.2.1 Filling unvented installations
To fill the appliance, proceed as follows.
1. Open the stop valve
i
in the hot water pipe and, if present, the stop valves
d
for the circulation pump.
2. Shut drain valve
g
.
3. Open the nearest hot water draw-off point
l
.
4. Open the supply valve
i
on the cold water side
a
so that cold water flows
into the appliance.
5. Completely fill the appliance (when cold water flows at normal pressure from
the nearest hot water draw-off point, the appliance is full).
6. Bleed the entire installation of air, for example by opening all hot water draw-
off points.
7. The appliance is now under water supply pressure. There should be no
water coming out of the overflow valve
m
nor the T&P valve
c
. If this does
happen, the cause might be:
-
The water supply pressure is greater than the specified 8 bar.
Rectify this by fitting a pressure-reducing valve
a
.
- The overflow valve in the protected cold supply setup is defective or
incorrectly fitted.
4.2.2 Filling vented installations
To fill the appliance, proceed as follows.
1. Open the stop valve
i
in the hot water pipe and, if present, the stop valves
d
for the circulation pump.
2. Shut drain valve
g
.
3. Open the nearest hot water draw-off point
l
.
4. Open the supply valve
i
on the cold water side
a
so that cold water flows
into the appliance.
5. Completely fill the appliance (when cold water flows at normal pressure from
the nearest hot water draw-off point, the appliance is full).
6. Bleed the entire installation of air, for example by opening all hot water draw-
off points.
7. The appliance is now under water supply pressure. There should be no
water coming out of the T&P valve
c
. If this does happen, the T&P valve
might be defective or incorrectly fitted.
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