Robur Next-R, Инструкция по установке, использованию и техническому обслуживанию

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First start-up
38
5
minimum power operation; check again and, if necessary,
correct the CO
2
value in such conditions by actuating the
o ff set adjustment screw.
14. Repeat step 12 to complete the procedure.
Check that the static and dynamic supply gas pressure
values, with the gas unit heater running at maximum
power, correspond to what is shown in Table 3.1
p. 23
(with low supply gas pressure values the CO
2
value will
also be at minimum values).
If the control systems are designed so that the gas unit
heater activation request depends on the room tem-
perature, the gas unit heater may not start because the
room temperature is already at requested setpoint. In
this case, set the forcing for manual activation on the
control system, or close contact Z9 (Z91-Z92 terminals)
manually.
Remember to set contact 27 (L-C terminals) back in its
original position or stop manual forcing of the power
level after the conclusion of checking operations.
If it has been set, remember to disable the forcing for
manual activation on the control system, or manual
close of contact Z9 (Z91-Z92 terminals).
Figure 5.2
Gas valve
A O ff set pressure intake
B Gas mains pressure intake
C O ff set adjustment screw
A
C
B
Table 5.6
R60 gas valve setting table
Gas
Gas
network
pressure
O ff set
pressure
CO
2
percentage in fumes
nominal Minimal heat input Nominal heat input
Type mbar Pa % %
G20
See Table
3.1 p. 23
-10 8,9 9,4
G25 -10 8,7 9,0
G25.1 -10 10,5 10,9
G25.3 -10 8,8 9,2
G27 -10 9,2 9,4
G2.350 -10 9,1 9,4
G30 -10 10,4 10,6
G31 -10 10,1 10,4
LPG -10 9,8 10,2
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
Table 5.7 R80 gas valve setting table
Gas
Gas
network
pressure
O ff set
pressure
CO
2
percentage in fumes
nominal Minimal heat input Nominal heat input
Type mbar Pa % %
G20
See Table
3.1 p. 23
-10 9,1 9,3
G25 -10 8,7 9,2
G25.1 -10 10,5 10,9
G25.3 -10 8,9 9,3
G27 -10 8,8 9,2
G2.350 - - -
G30 -10 10,2 10,5
G31 -10 9,9 10,2
LPG -10 9,7 10,1
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
5.3 GAS CHANGEOVER
Paragraph reserved exclusively to TACs.
The following instructions apply to both the conversion
from natural gas (G20) to any other gas and vice versa.
After the gas changeover, verify the combustion param-
eters as described in Paragraph 5.2 p. 35.
Check that the gas supply line is suitable for the new fuel
type used to supply the unit.
The following Table 5.8 p. 39 shows the nozzle diameter and
code for the di ff erent Next-R gas unit heater models, depending
on the gas type.