Emerson ALCO CONTROLS Thermo TI Serie Instrucciones De Operación

G e n e r a l i n f o r m a t i o n :
TI series of Thermo -Expansion Valves are designed
™
for refrigeration, heat pump and air conditioning. In
addition to the valve body (1), an orifice (2), a nut and
an optional TIA braze adapter (3) are required for
installation. (see Fig.1)
S a f e t y i n s t r 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 this product is intended
for use by personnel 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 release any refrigerant into the
atmosphere!
• Do not exceed the specified maximum ratings for
pressure and temperature.
• Do not use any other fluid 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
14/68/EU.
• Ensure that design, installation and operation
comply with European
standards/regulations.
I n s t a l l a t i o n :
• Valves may be installed in any position but should be
located as close as possible to the distributor or
evaporator inlet.
• Connect the liquid line to the TI valve inlet after the
orifice with strainer have been inserted. (No. 1 Fig.1).
• The expansion valve must be protected against all
contaminants. Install a filter drier and a sight glass in
front of the valve.
Flare Connections: (Fig.3)
- Use a nut according to DIN/EN/SAE/ANSI
standards. Shape of tube end must be in 45° angle,
straight edge, free from swarf (Fig.4a & 4b)
- Tightening torques for the nuts:
Inlet: 40...50 Nm
External equalizer: 17...20 Nm
- Apply a few drops of refrigeration oil on surfaces
of angled tube before fastening.
Warning: Failure to do so will cause
improper tightness. Leakage detection at a
specified torque requires an examination of
flare edge and nut. Torques over the specified
value may not stop the leakage. Do not over
torque the nut at the inlet connection. The
orifice would be jammed inside and will cause a
valve malfunction.
Brazing Connections:(Fig.5 & 6)
- Perform brazing in accordance with EN 14324.
- Before and after brazing clean tubing and brazing
joints.
- To avoid oxidization, it is advised to purge the
system with an inert gas such as nitrogen while
brazing.
Brazing connections TILE (Fig.5):
- TILE with stainless steel does not require any wet
rag during brazing. It is important to consider the
following subjects:
- Use of flux and silver rod with minimum 30%
silver. Direct torch away from valve
Brazing connections TIS(E) (Fig.6):
- Wrap wet rag around the valve to prevent valve
damage while brazing. Direct torch away from
valve body (max. temp. 120 °C).
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Operating instruction
Thermo™-Expansion Valve TI Series
TIA Brazing Adapter (Fig.1 & 2):
- Use supplied copper washer as shown in Fig.1.
Make sure that the surface of brass orifice (see
No.1 Fig.1) is scratch/damage free and apply a few
drops of refrigeration oil.
- Tightening torque for adapter nut: 40...50 Nm
• Unwind the capillary tube.
Warning: Do not bend capillary tube directly at
the connection to the valve. Permitted: distance
N (10 mm) and radius R (5 mm). (Fig.7)
• Securely fasten the bulb with straps provided.
Insulate bulb with suitable material. The location of
bulb on suction line depends on size of suction line
(see Fig. 8)
• Be sure that the external equalizer line cannot siphon
oil from the suction line.
P r e s s u r 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 PED 14/68/EU.
- to maximum working pressure of system for other
applications.
Warning:
Directive
• Failure to do so could result in loss of refrigerant
and personal injury.
• The pressure test must be conducted by skilled
and national
personnel with due respect for the danger related
to pressure.
L e a k a 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.
O p e r a t i o n :
Check for leaks, sufficient refrigerant charge and be
sure no flash gas is present before attempting to check
valve operation.
P r o p e r o p e r a t i o n o f c h a r g e s :
The maximum bulb temperature is limited to:
Code
SWxx /MWxx / NWxx
ZWxx / BWxx
Outlet: 50...60 Nm
SAD
SW / NW / BW /LW / KW
ZW
MW
CW / FW
Warning:
Gas charged valves features MOP function and only
operate properly if the temperature at the bulb is
below the temperature at valve head / capillary tube
(see Fig. 9). If the valve head becomes colder than
the bulb, malfunction of the expansion valve occurs
(i.e. erratic low pressure or excessive superheat).
F a c t o r y s e t t i n g s :
The table below provides the factory setting position of
superheat adjusting stem and shows the number of turns
(360°) clockwise when adjusting stem fully open
counterclockwise
Charge Number
Code of turns
SW
MW
NW
ZW +5 1/2
BW +5 1/2
www.climate.emerson.com/en-gb
Max. bulb
Charge
temp.
MOP +175°C
Adsorption +130°C
liquid +85°C
liquid +60°C
liquid +100°C
liquid +90°C
Charge Number Charge
Code of turns Code
+4 LW +4 SAD10
+6 KW +4 1/2 SAD20
+3 CW +4 1/2 MW55
FW +4 ZW175
SW75 +2 BW30
Warning: TILE-ZW (R410A) may require the
increase of factory static superheat setting for low-
temperature refrigeration applications such as
freezers.
TI in systems with non-standard refrigerants:
The following refrigerants can be used with standard
charges when factory setting is readjusted for optimum
superheat level. The readjustment depends to operating
evaporating temperature as follows:
Evaporating temperature (°C)
Refrigerant/
Charge -40
Code
R452A S +3/4
R450A M +1/3
R1234ze M +1/2
R32 Z
R454A B -2/3
Note: Change of static superheat will shift MOP point
in reverse direction.
Fig. 10
Note: + = Clockwise rotation
- = Counterclockwise rotation
S u p e r h e a t A d j u s t m e n t :
If the superheat must be adjusted for the application
proceeds as follows:
1. Remove seal cap from side of valve.
2. Turn the adjustment screw clockwise to increase
superheat and counterclockwise
superheat.
Changes in superheat (K) per stem turn depending on
evaporating temperature and refrigerant:
Refr. Code
R404A S
R507 S
R134a M
R407C N
R410A Z
R448A
B
R449A
R454C L
R455A K
R513A C
R1234yf W
As much as 20 minutes are required for the system to
stabilize after the adjustment is made.
3. Determine superheat "sh" according to Fig. 11.
4. Replace and tighten seal cap (hand tight).
S e r v i c e / M a i n t e n a n c e :
Defective valve body or orifice must be replaced, they
cannot be repaired.
T e c h n i c a l D a t a :
Max. Allowable Pressure PS
Factory Test Pressure PT
Medium Temperature TS
Number
Fluid Group
of turns
Hazard Category
+4
+5
Markings
+4
+3
Dimensions
+2 1/2
TI_OI_EN_DE_FR_ES_IT_RU_0421_R08_865884.docx
-30 -20 -10 0 +5
Number of turns
+1 +1-1/3 +1-3/4 +2-1/4 +2-1/3
+2/3 +1 +1-1/2 +2 +2-1/3
+1 +1-1/2 +2-1/2 +4 +4-1/2
0 -1/4 -1/2 -3/4 -1-1/4
-1 -1 -1-1/2 -1-3/4 -2
Warning: There are
max. 11 turns on the
adjustment stem (from left
stop to right stop). When stop
is reached, any further
turning will damage the
valve.
to decrease
Evaporating temperature (°C)
-40 -30 -20 -10 0 +10
3.1 2.3 1.7 1.3 1.0 0.8
3.0 2.2 1.7 1.3 1.0 0.8
6.5 4.6 3.3 2.4 1.8 1.4
4.2 3.0 2.2 1.6 1.2 1.0
2.4 1.8 1.3 1.0 0.8 0.6
3.4 2.5 1.8 1.4 1.1 0.9
3.3 2.4 1.8 1.4 1.1 0.9
2.7 2.0 1.5 1.2 1.0 0.8
5.9 4.2 3.1 2.3 1.7 1.4
5.9 4.2. 3.1 2.3 1.7 1.4
45 bar
49.5 bar
-45...+70 °C
I + II
SEP (PED 14/68/EU)
not allowed
Fig. 12
Date: 22.04.2021