Danfoss Thermostatic Expansion Valves

TE 5, TE 12, TE 20, TE 55

Instructions

Installation Guide

This section details the installation procedures for Danfoss TE 5, TE 12, TE 20, and TE 55 thermostatic expansion valves.

Valve Components and Connection

Diagrams illustrate the internal components of the thermostatic expansion valve, including the diaphragm, spring, and needle assembly. The valve is designed for connection to refrigeration lines.

Installation Steps

The installation process involves connecting the valve to the refrigeration line, inserting the element, and securing the valve body. Specific torque values must be observed for secure and proper installation.

Step 1: Connect the valve to the refrigeration line.
Step 2: Insert the valve element.
Step 3: Secure the valve body.

Torque Specifications and Tools

For proper installation, adhere to the following torque specifications:

Minimum torque: 7 Nm (0.7 kpm / 5 ft-lbs)
Maximum torque: 10 Nm (1 kpm / 7 ft-lbs)

Required tools include an Allen key M6 and a specific TE55 spanner M6.

Pipe Connection Sizes

The valves are compatible with various pipe sizes, indicated by Outer Diameter (OD) ranges:

12-16mm (1/2-5/8 in.)
18-22mm (3/4-7/8 in.)
25-35mm (1-1 3/8 in.)

Technical Specifications and Capacity Data

This section provides key technical specifications, including factory settings, superheat calculations, and nominal capacity data for various refrigerants.

Factory Settings and Superheat

The factory setting for superheat is typically SS = 4°C (7°F).

The superheat calculation is defined as: SH[K] = t1[°C] - ps[°C].

Superheat accuracy varies by model series:

TE5 and TE12: Normal (N) approximately 0.5°C (1°F) superheat, Broad (B) approximately 1.5°C (3°F) superheat.
TE20 and TE55: Normal (N) approximately 0.5°C (1°F) superheat, Broad (B) approximately 1.0°C (2°F) superheat.

Nominal Capacity Table

The following table lists the nominal capacities (in Tons of Refrigeration - TR and Kilowatts - kW) for different valve types, orifice numbers, and refrigerants. Note that new orifices and elements are marked with 'MWP 28 bar' on the box.

Type	Orifice No.	Old code	New Code	Nominal Capacity TR/kW (R134a)	Nominal Capacity TR/kW (R404A/507)	Nominal Capacity TR/kW (R407C)	Nominal Capacity TR/kW (R22)	Y-value
TE5	0.5	067B2788		2.5 / 8.7	3 / 10.8	3 / 11.1		26
TE5	1	067B2089	067B2789	3.5 / 12.0	4 / 14.6	4 / 15.0		26
TE5	2	067B2090	067B2790	5 / 16.9	6 / 20.1	5.5 / 18.3	5.5 / 18.8	26
TE5	3	067B2091	067B2791	6 / 21.7	7.5 / 26.3	9.5 / 33.0	10 / 33.9	26
TE5	4	067B2092	067B2792	8.5 / 29.0	10 / 34.6	12.5 / 43.9	13 / 44.8	26
TE12	2	067B2005¹⁾	067B2790¹⁾	5 / 16.9	6 / 20.1	7.5 / 25.6	7.5 / 26.1	26
TE12	3	067B2006¹⁾	067B2791¹⁾	6 / 21.7	7.5 / 26.3	9.5 / 33.0	10 / 33.9	26
TE12	4	067B2007¹⁾	067B2792¹⁾	8.5 / 29.0	10 / 34.6	12.5 / 43.9	13 / 44.8	26
TE12	5	067B2008	067B2708	11 / 39.0	14.5 / 50.6	17 / 58.8	17 / 60.0	37
TE12	6		067B2709	13.5 / 47.5	17.5 / 61.0	20.5 / 71.2	21 / 72.7	37
TE12	7		067B2710	16 / 55.8	20 / 70.6	23.5 / 81.4	24 / 84.5	37
TE20	8	067B2172	067B2771	20 / 69.5	22 / 77.6	29.5 / 104.0	32.5 / 113.0	31
TE20	8	067B2170	067B2771	20 / 69.5	22 / 77.6	29.5 / 104.0	32.5 / 113.0	31
TE20	8	067B2175	067B2771	20 / 69.5	22 / 77.6	29.5 / 104.4	32.5 / 113.0	31
TE20	9		067B2773	22.5 / 78.4	24 / 84.5	32.5 / 113.5	37.5 / 131.0	31
TE20	10	067G2701		29.5 / 102.8	34 / 118.4	42.5 / 148.4	44.5 / 156.0	32.5
TE55	11	067G2005	067G2704	35.5 / 124.7	41 / 143.2	50.5 / 177.4	54 / 190.0	32.5
TE55	11	067G2001	067G2704	35.5 / 124.7	41 / 143.2	50.5 / 177.4	54 / 190.0	32.5
TE55	11	067G2011	067G2704	35.5 / 124.7	41 / 143.2	50.5 / 177.4	54 / 190.0	32.5
TE55	12	067G2707		44 / 154.7	48.5 / 170.3	61.5 / 215.3	65.5 / 228.8	32.5
TE55	13	067G2006	067G2710	54.5 / 190.0	60.0 / 209.8	78 / 273.6	80.0 / 281.0	32.5
TE55	13	067G2002	067G2710	54.5 / 190.0	60.0 / 209.8	78 / 273.6	80.0 / 281.0	32.5
TE55	13	067G2012	067G2710	54.5 / 190.0	60.0 / 209.8	78 / 273.6	80.0 / 281.0	32.5

¹⁾ Change to TE5 valve body and element.

Important Notes

When combining previous and new orifices and elements, it is essential to control the superheat in the system. New orifices are identified by code numbers 067B27** and 067G27**. New elements are marked with 'MWP 28 bar' on the box.

The maximum test pressure (Ptest max.) is 32 bar (465 psig).

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