Krom Schroder PFR 704 User manual

03250789
DK S N P GR
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TR CZ PL RUS H
© 2018 Elster GmbH · Edition 01.18
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Follow-
ing the installation, pass the instructions on to the
operator. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• ,  ,  ,  ... = Action
▷= Instruction
Liability
We will not be held liable for damages resulting
from non-observance of the instructions and non-
compliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Transport
On receipt of the product, check that the delivery is
complete (see Part designations). Report any trans-
port damage immediately.
Storage
Store the product in a dry place. Ambient tempera-
ture: see Technical data.
Changes to edition 05.09
The following chapters have been changed:
– Wiring
– Certification
Operating instructions
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Translation from the German
Safety
Contents
Power supply PFP 700,
Relay module PFR 704
Power supply PFP 700,
Relay module PFR 704...................
Contents ..............................
Safety.................................
Checking the usage .....................
PFP 700...............................2
PFR 704 ..............................2
Installation ............................
Replacing PFP 700/PFR 704 ..............
Wiring ................................
Commissioning.........................
Faults.................................4
Technical data .........................4
Certification ...........................4
Contact ...............................4

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Checking the usage
PFP 700
Mounted in a module subrack, for power supply to
the control inputs of burner control units PFU760
and PFU780, or for auxiliary voltage supply to relay
module PFR704.
This function is only guaranteed when used within
the specified limits – see Technical data. Any other
use is considered as non-compliant.
Typenschlüssel
Code Description
PFP Power supply
700 Series
T
N
Mains voltage: 220/240 V AC
110/120 V AC
ZSpecial version
Part designations
U
I
I
PFP 700
2
5
4
1
3
3
LED panel
On/Off switch
Screws for attachment to the subrack
4Connection diagram
5Type label
Input voltage and ambient temperature – see type
label.
D-49018 Osnabrück, Germany
PFP 700
PFR 704
Mounted in a module subrack, for contact multiplica-
tion, e.g. if several air valves are activated via one
control signal for pre-purge, or for heating/cooling
switchover when using an impulse system MPT.
This function is only guaranteed when used within
the specified limits – see Technical data. Any other
use is considered as non-compliant.
Type code
Code Description
PFR Relay module
7Series
04 With 4 independent relays
T
N
K
H
Mains voltage: 220/240 V AC
110/120 V AC
24 V DC
24 V AC
ZSpecial version
Part designations
1
2
3
4
PFR 704
4
3
1
2
2
LED panel for relay activation
Screws for attachment to the subrack
Connection diagram
4Type label
Input voltage – see type label.
D-49018 Osnabrück, Germany
PFR 704
Installation
▷Installation position: any.
▷Distance between PFU and burner: max. 100m
(328 ft).
2
1
U
I
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PFP700
U
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I
PFP700
Replacing PFP 700/PFR 704
▷ Since February 2008, power supply PFP700
and relay module PFR 704 have had a black
front plate. PFP 700 and PFR 704 with a black
front plate incorporate all the previous functions
of PFP700 and PFR704 with a grey front plate.
▷ The new power supply PFP700 and the relay
module PFR704 are interchangeable with units
of earlier construction stages.

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PFP 700
CAUTION
Please observe the following to ensure that the PFP
is not damaged during operation:
– Check the mains voltage setting of the replaced
unit – see setting of switch S (115V or 230V).
– If necessary, adjust the setting of switch S on
the new unit.
S1
PFR 704
CAUTION
Please observe the following to ensure that the
PFR is not damaged during operation:
– The relay inputs must only be connected to the
permitted voltages (see connection diagram B
for PFR704).
Wiring
WARNING
Electric shocks can be fatal! Before working on
possible live components ensure the unit is discon-
nected from the power supply.
 Disconnect the system from the electrical power
supply.
▷PFP and PFR do not meet the requirements for
safety extra low voltage (SELV/PELV).
▷Ensure that the board outputs are connected to
mains voltage of one phase only or are only sup-
plied with 24 V AC/DC. Do not use the outputs
for different phases (L1, L2 and L3).
▷Connection only with permanent wiring.
 Wire as shown on the connection diagram.
Connection diagrams
A= PFP 700
B= PFR 704
8ace
30a
32c
F1
12ace
N
L1
PFP 700
UI
24 V=
600 mA
0 V
O
I
S0
230 V
115 V
S1
A
2e
2a
2c
4e 6c
8e
1
115 V~
8c
max. 2 A, 264 Vmax. 2 A, 264 Vmax. 2 A, 264 V
max. 2 A, 264
V
PFR 704
8a
6e
6a
230 V~
24 V=/~
0 V
10e
10a
10c
12e 16c
14e
2
14c
14a
16e
16a
0 V
18e
18a
18c
20e 24c
22e
3
22c
22a
24e
24a
0 V
26e
26a
26c
28e 32c
30e
4
30c
30a
32e
32a
0 V
115 V~
230 V~
24 V=/~
115 V~
230 V~
24 V=/~
115 V~
230 V~
24 V=/~
B
Commissioning
CAUTION
Mains voltage may only be connected by trained
personnel.
 Check the electrical wiring, switch settings and
parameter settings of the 19” boards and the
burner settings before commissioning.
 Switch on the system.
PFP 700
 Apply voltage to terminal 30a.
4 Switch on power supply PFP 700.
▷The green LED will light up.
PFR 704
▷The green LED will light up if a relay is activated.

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If you have any technical questions, please contact
your local branch office/agent. The addresses are
available on the Internet or from ElsterGmbH.
We reserve the right to make technical modifications
in the interests of progress.
Elster GmbH
Strotheweg 1, D-49504 Lotte (Büren)
Tel. [phone]
Fax [phone]
[email protected], www.kromschroeder.com
Contact
Faults
WARNING
Electric shocks can be fatal! Before working on
possible live components ensure the unit is discon-
nected from the power supply.
Fault-clearance must only be undertaken by au-
thorised, trained personnel.
? Faults
! Cause
• Remedy
? Red LED lights up on PFP 700 – 4 VDC
output is switched off.
! Overload at terminals 8ace – 12ace:
current >600 mA.
• Check wiring, reduce load.
Technical data
Front width 8 depth units = 40.6 mm,
Overall height 3 height units = 128.4 mm.
Ambient temperature:
-20°C to +60°C.
PFP 700
Mains voltage:
110/120 V AC, -15/+10%, 50/60 Hz,
220/240 V AC, -15/+10%, 50/60 Hz.
Power consumption:
PFP 700: 25 VA.
Output load:
24 V DC, 600 mA, short circuit-proof,
output rating 14 VA, PFP 700 switches off in the
event of an output overload.
Fine-wire fuse: 0.315 A, slow-acting L, pursuant to
IEC 127-2/3.
Weight: approx. 0.75 kg.
PFR 704
Input voltage: 3 inputs per relay,
110/120 V AC, -15/+10%, 50/60 Hz,
220/240 V AC, -15/+10%, 50/60 Hz,
24 V AC/DC, ± 10%.
Power consumption per relay: 25 mA.
Contact rating of floating outputs:
max. 2 A, 264 V (not fused internally).
Weight: 0.17 kg.
Certification
Declaration of conformity
We, the manufacturer, hereby declare that the prod-
ucts labelled accordingly comply with the essential
requirements of the following Directives and Stand-
ards:
– Gas Appliances Directive (90/396/EEC) in con-
junction with EN 298,
– Low Voltage Directive (2006/95/EC) in conjunction
with the relevant standards,
– Electromagnetic Compatibility Directive (2004/108/
EC) in conjunction with the relevant standards
relating to radiation,
– designed for applications pursuant to Directive
98/37/EC.
Comprehensive quality assurance is guaranteed by
a certified Quality System pursuant to DIN EN ISO
9001 according to annex II, paragraph 3 of Directive
90/396/EEC.
Elster GmbH