Mueller E-Star OESE 3.5 and 5 HP HFC Condensing Unit
Installation and Operation Manual, Part No. 8828747
Effective April 13, 2020
5.1
THERMAL EXPANSION VALVE (TEV) SELECTION AND INSTALLATION
The E-Star’s TEV must be field adjusted to maintain milk cooler evaporator superheat at 4–6°F or chiller
evaporator superheat at 10–12°F. Proper location and sizing of the thermal expansion valve is critical. Refer to
Section 5.2 for the superheat adjustment procedure.
An externally equalized TEV must be used on Mueller milk cooling applications. A sight glass must be installed at
the TEV inlet.
TABLE 7: THERMAL EXPANSION VALVE (TEV) SELECTION
FIGURE 3: THERMAL EXPANSION VALVE (TEV) INSTALLATION
10
Section 5.0 – Expansion Valve
No.
Description
Specifications
Part No. for Milk
Cooler Applications
Part No. for
Chiller Applications
1A
R-22 (5 HP)
1
⁄
2
" ODF inlet x
5
⁄
8
" ODF outlet solder
8824492
8824511
1B
R-22 (3.5 HP)
1
⁄
2
" ODF inlet x
5
⁄
8
" ODF outlet solder
8824490
N/A
1C
R-507 (5 HP)
1
⁄
2
" ODF inlet x
5
⁄
8
" ODF outlet solder
8825503
9843711
1D
R-507 (3.5 HP)
1
⁄
2
" ODF inlet x
5
⁄
8
" ODF outlet solder
8825505
N/A
1E
R-404a (5 HP)
1
⁄
2
" ODF inlet x
5
⁄
8
" ODF outlet solder
9844469
N/A
1F
R-404a (3.5 HP)
1
⁄
2
" ODF inlet x
5
⁄
8
" ODF outlet solder
9844468
N/A
2
Sight Glass, All
1
⁄
2
" ODF x
1
⁄
2
" ODM solder
8824494
8824494
The TEV sensing bulb should be located
a minimum of 10 tube diameters away
from any fittings or bends.
Example:
7
/
8
" suction line (x) 10 = 8
3
/
4
".
Securely mount and insulate the TEV sensing
bulb at a 4-o’clock position on the copper
suction line. Horizontal mounting is always
recommended when possible. If vertical
mounting is required, maintain the minimum
dimensions as stated above.
4 o'clock
12 o'clock
1
2
