Viadrus GRAND G 36, Manual For Operation And Installation

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The heating systems with an open expansion tank enable a direct contact between the water and
atmosphere. During the heating season the water expanding in the tank absorbs the oxygen which
increases the corrosive effects and at same time water evaporates significantly. For a refill there can only
be used water treated to the values according to
Č SN 07 7401.
12. Bleed the heating system.
13. Boiler must be properly earthed. For grounding there is used an external protective clamp in the rear
part of boiler.
14. Fill the heater with water (if the heater is connected). In case of a longer hot water distribution system
the pipes must be insulated in order to reduce the heat loss.
15. After the system has been filled with water set the Honeywell V 4044F three-way valve operation
lever from the MAN-OPEN position into AUTO position see. fig. no. 15 (if the HWS preparation is
installed).
16. Connect the selected type of regulation according to the enclosed manual.
17. The plastic foil, wooden pallet and cardboard packing after boiler unwrapping must be thrown out into the
waste containers intended for this purpose.
During the heating season the water volume in heating system must be kept constant and the heating system
has to be blown through. Water from boiler and the heating system must never be discharged or taken for
usage except for the emergency cases like repairs etc. Water discharge and filling with new water increase
the danger of corrosion and scale development.
In case we have to refill the heating system with water we only refill a cold boiler in order to prevent the
boiler sections from disruption.
10. Commissioning- instructions for contractual service organization
The boiler commissioning, heat output setting and any interference with boiler electric part or
connection of additional control elements can only be done by a contractual service organization
authorized to do these activities.
10.1 Verification activities before commissioning
Before the boiler commissioning it is necessary to check:
a) Filling the heating system with water (check the manometer).
b) Adjustment of thermostats:
-
boiler thermostat 85 °C
(in case of any superior regulation it is recommended to set 85 °C temperature);
- heater thermostat (if connected) 0 – 90 °C; for a sufficiently fast HWS heating the TK boiler
thermostat must be set to 85 °C.
c) Gas input pressure before entering the boiler and bleeding of the gas connection.
d) Connection to el. network and switching of the control thermostats Č SN 33 2180 Art. 6.2.2. – the sockets
are to be connected in a way making sure that the protective plug is upwards and the phase are
connected to the left hand side socket when looking on it from the front. The same applies to the double
sockets.
e) Release of bleeder screw of automatic bleeder valve.
f) Connection to the chimney or to smoke flue in case of forced combustion products venting.
g) Sparkling (for boilers in natural gas design do the check with boiler gas supply closed):
- check by listening whether there is some sparkling on the ignition electrode of ignition pilot burner;
- sparkling time 50 sec.
- because the gas supply is closed there must be signalled a failure;
- „automatics unblocking“ by pushing down the ”RESET” push in network.