Initial start-up
2
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
27
Subject to modifications resulting from technical improvements !
Buderus • http://buderus-domestic.co.uk
Connecting the hot water sensor FW
z
Remove the bridge plug (fig. 32, item 1).
Cable colours: black/white and lilac.
z
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
z
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.
2.2.3
Measuring the gas supply pressure (flow pressure)
z
Open at least one radiator thermostat valve.
The gas boiler must not be turned on yet.
z
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.
z
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).
z
Fit the measuring hose of the pressure gauge to the test
nipple (fig. 35, item 2 or fig. 36, item 2).
fig. 32 Hot water sensor FW for external storage-type water heater
1
2
fig. 33 Hot water flow volume limiter
Turning to the right =
reducing the flow volume
Turning to the left
=
increasing the flow volume
fig. 34 Chimney sweeper switch
1
2
10
0
1
11
KW
10
1
10
1
0
1
1
I
0
