Viessmann VITOCAL 300-A, Инструкции по установке и обслуживанию для подрядчиков

Страница: 19 / 124

19
Connect heating circuits and DHW cylinder in the building
1. Equip the secondary circuit on site
with an expansion vessel and safety
assembly (in accordance with
EN 12828).
Fit the safety assembly to the on-site
line in the heating water return.
2. Connect secondary lines to the lines
of the hydraulic connection set
(accessory).
!
Please note
To prevent appliance dam-
age,
connect on-site secondary
lines so that they are free of
load and torque stresses.
Make tight hydraulic connec-
tions on the secondary side.
3. Fill and vent secondary circuit.
4. Thermally insulate pipes inside the
building.
5. Connect the drain hose to the safety
valve.
Connect the drain hose to the public
sewage system with a fall and a pipe
vent.
Note
■ In underfloor heating circuits, install a
temperature limiter to restrict the max-
imum temperature of underfloor heat-
ing systems.
■ Safeguard the minimum flow rate: see
"Specification".
Fitting the flow temperature sensor, secondary circuit
The flow temperature sensor for the sec-
ondary circuit is installed in the heating
water flow
inside the building .
Note
If an instantaneous heating water heater
is installed, fit the flow temperature sen-
sor for the secondary circuit in the heat-
ing water flow downstream of the
instantaneous heating water heater.
Installation sequence
Making the hydraulic connections
(cont.)
5516 436 GB
Installation