andrews SUPAflo EVO SF60 EVO, Инструкция по установке и обслуживанию

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Commissioning
24
Water and hydraulic system
Hydraulic system
Check if the boiler is hydraulically
connected to the system in such
way, that water flow can be secured
at all times during burner operation.
The water flow is supervised by ΔT-
protection in the boiler and a lack of
flow will lead to a direct burner stop
and lockout of the boiler.
Minimum
operating
pressure
[bar]
Flow
temperature
[°C]
> 1.0 90
Commissioning of the boiler should
be carried out by authorized per -
sonnel only. Failure to respect this
condition makes the guarantee
void. A protocol of the commission -
ing should be filled out (see end of
this chapter for example of commis -
sioning protocol).
This chapter explains the commis -
sioning of the boiler with the stand -
ard boiler controller. When an addi -
tional system controller is installed,
please refer to its manual for com -
missioning the controller.
Water quality
The system should be filled with wa -
ter with a pH value between 7 and
9,5. The chloride value of the water
should not exceed 50 mg/l. Entry of
oxygene by diffusion should be pre -
vented at all times.
Damage to the heat exchanger be -
cause of oxygene diffusion will not
be taken under warranty.
In installations with higher water
volumes, it’s necessary to respect
the maximum filling and additional
volumes with corresponding hard -
ness values as indicated in the
Standard VDI 2035.
The table on the right gives an indi -
cation of the relation between the
water quality and the maximum wa -
ter filling volume during the lifetime
of the boiler.
Water pressure
Open the valves to the system.
Check the water pressure in the sys -
tem.
If the water pressure is too low (see
table), increase the pressure up to at
least the minimum required water
pressure in the table.
Filling can eventually be done via
the (optional) fill and drain valve (2)
on the return connection (1) of the
boiler.
Boiler output Max. sum of alkaline earths Max. total hardness
[kW] [mol/m³] [°dH] [°f]
50 - 200 2.0 11.2 20
200 - 600 1.5 8.4 15
Concentrate
Ca(HCO
3
)
2
Capacity of installation Q (kW)
115
150
200 250 300 350
400
500 570
mol/
m ³
°dH °f
Maximum water (re)fill volume Vmax [m ³ ]
≤ 0.5 ≤2.8 ≤5 - - - - - - -
1.0 5.6 10 - - - - - - -
1.5 8.4 15 3 4 5 6 8 10 12
2.0 11.2 20 3 4 5 6 6.3 7.8 9.4
2.5 14.0 25 1.9 2.5 3.1 3.8 5.0 6.3 7.5
≥ 3.0 ≥16.8 ≥30 1.6 2.1 2.6 3.1 4.2 5.2 6.3
1
2
Commissioning