Buderus 800-24 Installation And Servicing Instructions page 27

Connecting the hot water sensor FW
Remove the bridge plug (fig. 32, item 1).
Cable colours: black/white and lilac.
Connect 3-m long extension cable (fig. 32, item 2) for the
hot water sensor to the plug and fit sensor in the reservoir.
type 800 – 24T25 H/V and 800 – 29T25 H/V
Setting the hot water flow limiter
Set the desired value on the flow volume limiter (fig. 33),
e.g. for 60 °C at 6 liters/min for type 800 – 24T25 or
8 liters/min for type 800 – 29T25.
Turning to the right =
Turning to the left =
2.2.3 Measuring the gas supply pressure (flow pressure)
Open at least one radiator thermostat valve.
The gas boiler must not be turned on yet.
Move the chimney sweeper switch (fig. 34) to position "1".
On type 800 – 60 the full capacity is achieved after approx.
one minute. Therefore measurements should be carried
within one minute of boiler operation.
Loosen the screw plug on the gas distribution pressure test
nipple on Honeywell gas units (fig. 35, item 1) two turns,
fully unscrew the plug on SIT gas units (fig. 36, item 1).
Fit the measuring hose of the pressure gauge to the test
nipple (fig. 35, item 2 or fig. 36, item 2).
Subject to modifications resulting from technical improvements !
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
reducing the flow volume
increasing the flow volume
Initial start-up
1
fig. 32 Hot water sensor FW for external storage-type water heater
fig. 33 Hot water flow volume limiter
I 11
KW
0 0 1
1 2
1 10
1
10
1
10
fig. 34 Chimney sweeper switch
2
0 1
Buderus • http://buderus-domestic.co.uk
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