4.6
Hydraulic connection
The boiler comprises the following safety equipment,
in accordance with EN 12828:
•
Minimum pressure limiter DBmin
• Safety maximum pressure limiter DBmax
• Hydraulic pressure monitor DBmax + 50 %
• Thermostat
• Temperature monitor TBmax + 20 %
• Safety temperature limiter
Make sure the return is connected correctly so
as to achieve optimum efficiency.
To prevent noise emissions, connect the flow
and return pipes to the heating circuit with
flex i ble compensators.
High-temperature return
(e.g. fan group or calorifier)
Low-temperature return
(e.g. underfloor heating)
Fig. 26
4.6.1 Customer-side requirements
A pressure expansion tank adapted to the heating sys-
tem, water volume and static height.
4.6.2 Hydraulic interconnection
When combining a calorifier with floor heating, a mixer
needs to be installed. A minimum amount of circulating
water is not required.
Regarding suitable hydraulic connections,
please observe the notes in the planning doc-
u mentation of the relevant Hoval sales com-
pany!
Example: UltraGas
®
(15-50)
Gas boiler with
- 1 direct circuit
Hydraulic schematic BDEE005
Fig. 27
NOTICE
Make sure to close off unused connectors
tightly.
TTE-WEZ
TopTronic
®
E basic module heat generator (installed)
B1
Flow temperature monitor (optional)
AF
Outside sensor
DKP
Pump for heating circuit without mixer
Optional
RBM
TopTronic
®
E room control module
TTE-GW
TopTronic
®
Gateway
26
4 217 213 / 01
INSTALLATION
Summary of Contents for UltraGas 15
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