Spec
Sheet
PYRTEC Grate Firing System
Installation, closed system
KÖB & SCHÄFER GmbH, Flotzbachstr. 33, A-6922 Wolfurt, Tel. +43/5574/6770-0, Fax 65707, E-Mail: [email protected]
Subject to technical changes.
7960-2
2006-02-01_E
a) Note:
-
To reliably prevent boiler corrosion caused by condensation of exhaust gases, the boiler return flow temperature must
not under any circumstances be below 65°C. A boiler circuit pump with a modulating valve should be provided
according to the diagram for this purpose. The boiler circuit should be designed such that the temperature difference
between the forward flow and the return flow is equal to or less than 15°C.
-
The expansion tank has to be connected to the boiler above the boiler forward flow and without any shut-offs.
b) Safety-relevant equipment included in the scope of performance provided by the installing
heating engineer
M 20
Boiler pump
Y 20
Boiler mixer
SV
Safety valve, pressure set to max. 3.0 bar, homologated component as per DIN 3440
Nominal width of the valve, of the connection line and of the exhaust pipe as per DIN 4751 Part 2
TS131
Thermal run-off safety valve R ¾”, homologated component; special-purpose design for opening
temperature 100°C, (safety heat exchanger built into boiler), from Pyrtec-720 2 safety heat exchangers in
parallel are required as well as 2 thermal run-off safety valves
KW
Cold water inlet, min. 2.5 bar, max. 3.5 bar
WMS
Water level control device, homologated component; required in Germany starting from systems over 350
kW,Installation recommendation: WMS with magnetic transmission of the float movement to a switch unit
EL
Air
separator
(recommendation: absorbition-type degasser)
ExH
Expansion tank closed, with design certification; for heating system
(Recommendation: connect on cool return flow, connected to the boiler via the forward flow without any
blockage units)
ExS
Expansion tank closed; with design certification; for safety heat exchanger, max. 4.0 litres, 10 bar
DAZ
Pressure indication device (pressure gauge)
TAZ
Temperature indication device (thermometer)
c) Design recommendation
Mode
l
KPT-
Boiler circuit
(VL, RL, BP)
Thermal
run-off
safety valve
TS-131
(quantity)
Water
through-put
required at
2.5 bar
Accumulat
or volume
3)
Supply
line ZL
Drain
pipe
AL
2)
Safety valve
model SV
68M
1)
Safety line
SL
2)
530 NW 100
1
2224 l/h
4300 l
R ¾“
R 1“
R 1 ½“
NW 65
720 NW 100
2
3020 l/h
5800 l
R ¾“
R 1“
R 1 ½“
NW 80
950 NW 125
2
3986 l/h
7600 l
R ¾“
R 1“
2 x R 1 ½“
2 x NW 65
1250 NW 125
2
5246 l/h
10000 l
R ¾“
R 1“
2 x R 1 ½“
2 x NW 80
1)
Threaded connection for supply line
2)
Length of the exhaust pipe up to 4.0 m (for longer lines, see DIN 4751 Part 2)
3)
On request, we will be glad to provide a project-based offer on the accumulator(s).
d) Equipment recommendation from KÖB's delivery programme
-
Note: The equipment below will only be supplied via the installing heating engineer.
Model
KPT-
Designation:
Description:
Item no:
See Spec
Sheet:
Accumulator in the form of a hydraulic switcher
WD-…
4700
TS 131
Thermal run-off safety valve, 100°C
K-TS-131
4500
530 M 20
Grundfos pump UPS 65-60 F, 400 V
1)
ZPS-656-4
4600
720 M 20
Grundfos pump UPS 80-60 F, 400 V
1)
ZPS-806-4
4600
950 M 20
Grundfos pump UPS 80-120 F, 400 V
1)
ZPS-8012-4
4600
1250 M 20
Grundfos pump TP 100-60 F, 400 V
1)
ZPS-1060-4
4600
530 Y 20
Motor-three way tap,
VBF 21.100/SQL33
ZH-3-100
4600
720 Y 20
Motor-three way tap,
VBF 21.100/SQL33
ZH-3-100
4600
950 Y 20
Motor-three way tap,
VBF 21.125/SQL33
ZH-3-125
4600
1250 Y 20
Motor-three way tap,
VBF 21.125/SQL33
ZH-3-125
4600
1)
For
∆
t 15K, as per illustration
Any additional resistors (heat meters, slide valve) require redesigning of the boiler pump!
Summary of Contents for KOB PYRTEC SERIES
Page 1: ...Assembly and Installation Instructions 530 to 1250 ID 104661 F english ...
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