Emerson Alco Controls TIH Series Operating Instruction

G e n e r a l i n f o r m a t i o n :
TIH series of Thermo™-Expansion Valves are
designed for air conditioning, heat pumps and
commercial refrigeration applications. The TIH is ideal
for those applications requiring hermetic/ compact size
combined with stable and accurate control over wide
load and evaporating temperature ranges.
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 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 release any refrigerant into the
atmosphere!
• Do not exceed the specified maximum ratings for
pressure and temperature.
• 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
accordance with European pressure equipment
directive 14/68/EU.
• Ensure that design, installation and operation are
according to European
standards/regulations.
M o u n t i n g l o c 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.
• Fig. 1 shows Heat pump application.
B r a z i n g : ( F i g . 2 )
• Perform and consider the brazing joint as per
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.
• Do not exceed the max. body temperature of
120 C!
I n s t a l l a t i o n :
Warning: Do not bend capillary tube at
interface to head of valve. Allowed: distance N
(10 mm) and radius R (5 mm).
Fig. 3
• Securely fasten the bulb with straps provided.
Insulate bulb with a suitable material. The location of
bulb on suction line is dependent to size of suction
line (see Fig. 4)
• Be sure that the external equalizer line cannot siphon
oil from the suction line.
• The expansion valve must be protected against all
contaminants. Install a filter drier before the valve.
• Install a sight glass before the valve.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Thermo™-Expansion Valve Series TIH
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
directive14/68/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 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:
Charge Code
for product in
Z1/Z3, M1/M3,
N1/N3, C1/C3
M0/M2, C0/C2
N0/N2, B0/B2
and national
Warning:
Valves with gas charge feature MOP function and
operate properly only if the temperature at the bulb
is below the temperature at the head of the valve and
at the capillary tube (see Fig. 5). If 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
clockwise
counterclockwise
Charge
Code
Z1/Z3
M1/M3
N1/N3
-
C1/C3
TIH in systems with nonstandard refrigerants:
The following refrigerants can be used with standard
available charges when factory setting to be readjusted
for optimum superheat level. The readjustment depends
to operating evaporating temperature and it is as
guideline as follows:
Refrigerant
R32
R452B
R454B
R450A
R454C
R454C
R1234YF
R1234YF
R454A
R455A
Note: Change of static superheat will shift MOP point
in reverse direction.
Note2: TIH for R134a with MOP (M1) shall not be
used for R450A.
www.emersonclimate.eu
Operating instruction
Charge Max. bulb Temperature
MOP +120°C
liquid +100°C
liquid +80°C
when adjusting stem fully
Number of Charge Number of
turns (360°) Code turns (360°)
+5.5 -
+2.5 M0/M2
+5.5 N0/N2
- B0/B1
+1.5 C0/C2
Evaporating temperature (°C)
Charge
+5 0 -10
code
Number of turns
Z1 -1 0 0
Z1 +2.5 +2.5 +2.5 +2.5
Z1 +3 +3 +3
M0 +2.5 +2 +1
N1 0 0 0
N0 +0.5 +0.5 0
C1 0 0 0
C0 0 0 0
B0 -2 -2 -1
B0 +1.5 +1.5 +1.5 +1.5 +1.5
Warning: There are max. 12 turns on the
adjustment stem (from left stop to right stop). When
stop is reached, any further turning will damage the
valve.
Fig. 7
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 bottom of valve.
2. Turn the adjustment screw clockwise to increase the
superheat and
superheat.
Changes in Superheat (K) per stem turn depending
on evaporating temperature and refrigerant:
Refrigerant
R410A
R32
R452B
R454B
R407C
R448A
R449A
R134a
R513A
As much as 15 minutes are required for the system to
stabilize after the adjustment is made.
3. Determine superheat "sh" according to Fig. 6.
open
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 TIH must be replaced, they cannot be
-
repaired.
+2.5
T e c h n i c a l D a t a :
+4.5
Max. working pressure PS
+3.5
+3
Factory test pressure PT
Medium temperature TS
Dimensions
-20 -30
0 -
-
+3 -
+0.5 -
0 -
-0.5 -
+0.5 -
+1 -
-0.5 0
TIH_OI_EN_DE_FR_ES_IT_RU_0220_R05_865925.docx
Note:
+ = Clockwise rotation
- = Counterclockwise rotation
counterclockwise to decrease
Evaporating temperature (°C)
-30 -20 -10 0 +5
1.3 1.0 0.8 0.6 0.5
1.3 1.0 0.7 0.6 0.5
1.4 1.1 0.8 0.6 0.6
1.5 1.1 0.8 0.6 0.6
2.3 1.6 1.2 0.9 0.8
2.0 1.5 1.1 0.9 0.8
2.0 1.5 1.1 0.9 0.8
- 2.5 1.8 1.4 1.2
- 2.3 1.7 1.3 1.2
46 bar
50.6 bar
-40...+70°C
Fig. 8
Date: 19.02.2020