Operating instruction
Pressure actuated Fan Speed Control
FSX / FSY / FSM
Emerson Climate Technologies GmbH
www.climate.emerson.com/en-gb
Am Borsigturm 31 I 13507 Berlin I Germany
Date: 04.09.2019
FSY-FSX-FSM_OI_ML_R14_0716010.docx
G e n e r a l i nf o r ma t i o n :
FS regulates the speed of fan motors according to
pressure changes. Make sure that the motor is approved
by the motor/unit manufacturer for variable speed by
means of phase cutting (TRIAC).
S a f e ty i n s tr u c t i o n s :
•
Read operating instructions thoroughly. Failure
to comply can result in device failure, system
damage or personal injury.
•
According to EN 13313 it is intended for use by
persons having the appropriate knowledge and
skill.
•
Before opening any system make sure pressure in
system is brought to and remains at atmospheric
pressure.
•
Do not exceed the specified maximum ratings for
pressure, temperature, voltage and current.
•
Before installation or service disconnect all
voltages from system and device.
•
Observe and avoid mechanical damage of
component housing.
•
Do not use any other fluid media without prior
approval of EMERSON. Use of fluids not listed
could result in change of hazard category of
product and consequently change of conformity
assessment requirement for product in
accordance with European pressure equipment
directive 14/68/EU.
•
Ensure that design, installation and operation are
according
to European and national
standards/regulations.
•
Disposal: Electrical and electronic waste must
NOT be disposed of with other commercial waste.
Instead, it is the user responsibility to pass it to a
designated collection point for the safe recycling
of Waste Electrical and Electronic Equipment
(WEEE directive 2012/19/EU). For further
information, contact your local environmental
recycling center.
S e t t i n g :
If desired set point differs from factory setting, follow
the procedure for setting
before any installation
:
Factory set point:
Type
Refrigerant Temp.
(°C)
Pressure
P-band
fix
FS_-41_
R134a
36
8 bar 2.5 bar
R1234ze
46
R513A
34
R450A
41
FS_-42_
R404A
35
15 bar 3.8 bar
R507
35
R452A
37
R407F
38
R448A
39
R449A
39
R407F
39
R407C
42
R22
42
FS_-43_ R410A
38
21.8 bar 4.6 bar
Fig. 1
Bottom view
Allen Key
Setting Screw
Clockwise
Sealing plug
Counterclockwise
1.
Remove sealing plug and insert 2 mm or 5/64"
Allen key into setting screw. Turn Allen key
clockwise (+) or counterclockwise (-) to readjust the
setting. Do not turn setting screw
more than 3
turns clockwise
(+3).
Use following table as a quick guideline for setting:
Pressure changes per turn of adjusting screw:
Type
FS -41_ FS -42_
FS -43_
Pressure
range (bar)
4.0...12.5 9.2…21.2 12.4…28.4
Turn
clockwise
+1.2 bar +2.5 bar
+3.3 bar
Turn
counter-
clockwise
-1.2 bar
-2.5 bar
-3.3 bar
2.
After adjustment insert sealing plug and make sure
that it is properly fitted.
Notes:
•
IP65 protection requires firmly sealed plug.
•
Tolerances for condensing temperatures set point:
±
2K.
Readjustment to factory set point:
Turn setting screw counterclockwise until end-stop.
Then turn setting screw clockwise:
5 turns for FS -41 ,
3 turns for FS -42 or
5-1/2 turns for FS -43 .
Partial voltage is applied even if motor is not
running. Disconnect voltage for service on motor or
FS!
M o u n t i n g l o c a t i o n :
see Fig. 2 and Fig. 3
I n s t a l l a t i o n :
Direct mounting via pressure connection or indirect
mounting on housing bracket with capillary tube or
sweat pressure connection.
Threaded connection: (see Fig. 4)
•
For tightness the use of copper gasket (
Fig. 4) on
7/16”-20UNF female connection is required.
Brazing:
(see Fig. 5)
•
Perform and consider the brazing joint as per
EN 14324.
•
Before and after brazing clean tubing and brazing
joints.
•
Minimize vibrations in the piping lines by
appropriate solutions.
•
Do not exceed the max. body temperature of
70°C!
E l e c t r i c a l c o n ne c t i o n f o r F S F - N _ _ :
Notes:
•
Entire electrical connections have to comply with
local regulations.
•
Use proper cable diameter for wiring of motor.
•
Do not use with two-speed motors.
•
Push plug slightly on the pins of controller.
•
Direction of plug in 90° steps possible (Fig. 6)
•
No gasket required.
•
Fasten screw with 0,3 Nm.
•
Plug cannot be repaired. In case of failure replace
connector.
P r e s s ur e T e s t :
After completion of installation, a pressure test must be
carried out as follows:
‒
according to EN 378 for systems which must comply
with European pressure equipment directive
14/68/EU.
‒
to maximum working pressure of system for other
applications.
Warning
:
•
Failure to do so could result in loss of refrigerant
and personal injury.
•
The pressure test must be conducted by skilled
persons with due respect regarding the danger
related to pressure.
L e a ka g e T e s t :
Conduct a tightness test according to EN 378-2 with
appropriate equipment and method to identify leakages
of external joints.
W i r i n g : ( s e e F i g . 7 )
Note:
Use fuse type/size recommended by motor
manufacturer and break switch. Consult motor
manufacturer for capacitor size (Cb).
O p e r a t i o n :
Note: Before operation the customer has to qualify
the functionality and reliability of FS
_+ FSF-
N
in
combination with the fan motors!
T e c h ni c a l D a ta :
Supply voltage
15%, -20%
(50-60 Hz)
Nominal Current
FSY
FSX/FSM
0.1 – 4.0A
0.5 – 4.0A
3.0A at 55°C - Fig. 8
Fig. 8
Max.operating Pressure PS
FS -41 :
FS -42 :
FS -43 :
27 bar
32 bar
43 bar
Max. Test Pressure PT
FS -41 :
FS -42 :
FS -43 :
30 bar
36 bar
48 bar
Temperatures
medium at pressure connection
operating (ambient)
Max. 70°C
-20…+55°C
Medium
Compatibility
R410A
R134a
R404a,
R507
R407C
R407A
R407F
R1234ze R452A
R448a
R449a
R450A
R513A
R22
Protection class
IP 65 (EN 60529/IEC 529)
Markings
(FS + FSF-N )
(EMC 2014/30/EU,
LVD 2014/35/EU,
RoHS 2011/65/EU)
