Installation
23
Condens 7000 FP – 6721846699 (2022/12)
Observe the safety equipment in accordance with EN12828!
Generally, every boiler >300 kW must be equipped with a maximum
pressure limiter, which must be electrically connected to the control unit.
A low water indicator or a minimum pressure limiter are not required. The
function is ensured by an integrated water pressure sensor.
Only an additional maximum pressure limiter is required as replacement
for an expansion valve. Due to the design, an additional high limit safety
cut-out is not required.
Observe the installation instructions for the accessories.
Connection of safety set 3 bar, 4 bar, 5 bar and 6 bar
(Fig. 28)
Seal the safety valve [2] at the connector on the boiler safety
assembly [1] using suitable sealing agent.
Screw in pressure gauge [3].
Mount maximum pressure limiter [4] with gasket [5] (tightening
torque: 50 Nm).
Remove the plug from the flow connector [9].
Screw connector pipe 2" [7] with O-ring [8] into the flow connector
[9] (tightening torque: 70 Nm).
Mount the pre-assembled boiler safety assembly [6] to the 2"
connector pipe [ [7] (tightening torque: 70 Nm). In doing so,
counterhold the connector pipe.
Fig. 28 Connection of safety set
[1] Boiler safety assembly
[2] Water pressure relief valve
[3] Pressure gauge
[4] 2x maximum pressure limiter
[5] Flat gasket
[6] Flat gasket
[7] Connector pipe 2”
[8] O-ring
[9] Flow connector
At an operating pressure up to 3 bar, seal in the pressure relief valve
at the manifold connector with a suitable sealant.
Fit the discharge pipe to the respective pressure relief valve
according to local regulations.
5.8.4 Installing the DHW cylinder
Make the connection of a DHW cylinder to the flow and return on site. The
required external cylinder primary pump can be controlled by the control
unit ( technical documentation of control unit).
5.9 Establishing the fuel supply
DANGER
Danger to life through explosion of flammable gases!
Work on components in contact with gas must only be carried out by
certified gas fitters.
Observe all local regulations relating to the gas connection.
Seal in the gas connections with an approved sealant.
Subject to local regulations, install thermally activated shut-off device
(TAE).
We generally recommend the installation of a compensator in the gas
line.
Install gas isolator [2] in the gas line (GAS). When doing so, secure
the gas line inside the boiler to prevent it from becoming twisted.
Connect expansion joint [1] (recommended) to the gas isolator.
Connect the gas line to the gas connection or expansion joint free of
stress.
Secure the gas line with pipe clips so that the gas connection is free
from any stresses.
Close gas isolator.
Fig. 29 Establishing the gas connection
[1] Expansion joint
[2] Gas isolator (here with thermally activated shut-off device)
[3] Pipe clip
For higher gas supply pressures than shown in table 10 ( page 29),
Bosch offers additional gas pressure governors as accessories.
0010041042-001
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