GOK 500EAZ, Assembly And Operating Manual, Page: 23 / 144

Single conduit filter and double conduit filter with plastic filter cup
Part no. 13 852 51 a 7 / 16
For oil consumer installations, the following mean flow rate is applicable pursuant to
DIN 4755:
Suction: (0.2 ÷ 0.5) m/s Discharge: (1.0 ÷ 1.5) m/s
Taking into account the length of the suction
line, the geodesic height, the suction height, and
the fuel oil volume flow rate, the following can
be recommended for selecting the piping:
⇒
.
V
Fuel oil
AD x t Copper pipe
(1 ÷ 10) l/h
6 x 1mm
(8 ÷ 45) l/h
8 x 1mm
(25
÷
130) l/h
10 x 1mm
(90 ÷ 170) l/h
12 x 1mm
• Lower flow rates in suction mode will result in an undesired formation of bubbles
•
Piping with an internal diameter of less than 4mm is not recommended!
Maximum total pressure loss for all fittings in the suction line = 0.4bar
The pressure loss depending on the fuel oil volume flow rate and the filter element used can
be found in the diagrams:
Diagram1: pressure loss
∆
p filter type 500 ERAZ in the return supply area
For the total pressure loss of the
filter, the pressure loss is to be
individually determined depending
on the fuel oil EL volume flow rate
and to be the sum of:
The return supply area +
Tank – burner supply area
Diagram 2: pressure loss ∆p filter type 500 ERAZ in the tank – burner supply area
Filter elements:
Siku 70 μ m, Siku 35 μ m,
Siku 70 μ m long, Siku 35 μ m long,
felt 70-80 μ m, stainless steel 100,
Ultra-fine filter MC-7 7-20 μ m,
Replacement filter 25µm
Filter area:
100% = pure/clean
50% = filter area 50%
dirty/impermeable
V = fuel oil volume flow rate