Danfoss TR6 Data sheet

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Data Sheet

Thermostatic Expansion Valves Type TR6

The TR6 series is a hermetic design which is developed with features especially for use in applications such as:

• Residential air conditioning systems

• Split systems

• Roof top units

• Heat pumps

• Chillers

• Light commercial air conditioning systems

The TR6 design incorporates a forged brass body with the entire power element, including the capillary tube and bulb, fabricated from stainless steel. All valves are designed with balanced port which reduces the inuence from varying condensing pressures. The valves can be delivered with special connections and ttings both at the inlet, outlet, and the equalizer connection.

AI318728845972en-000401

Thermostatic Expansion Valves, Type TR6

Features

• Compact size - hermetic design, straightway conguration with external equalization

• Refrigerants & rated capacities ranging up to

◦ R22/R407C: 23.6 kW / 6.7 TR ◦ R410A: 24.5 kW / 7 TR

• Laser-welded power element

◦ Longer diaphragm life ◦ High corrosion resistant

• Stainless steel capillary tube

◦ Tolerates more bending for easier installation and longer life ◦ High strength and vibration resistance

• Stainless steel bulb ◦ Self aligning

• Balance port design

• A complete program with and without internal check valve

• Internal check valve design with low pressure drop in reverse ow

• Adjustable or non-adjustable superheat, for customer specic factory setting

• Bleed function available

• Solder, chatle and aeroquip connections

• With external equalization

• UL listed, le SA7200

• Anti-hunt bulb charge

Danfoss

R64-1822.12

BCD

TR6 with / without internal

check valve

RD Distributor

Compressor

Outdoor coil

DCL/DML

Danfoss

R64-1823.13

ABCDEFGHRD Distributor

Indoor coil

TR6 with internal check valve

4-way valve

Compressor

DCB/DMB

TR6 with internal check valve

Outdoor coil

Thermostatic Expansion Valves, Type TR6

Application

Traditional air conditioning system, cooling only

Figure 1: Traditional air conditioning system, cooling only

Illustrates the diagram of a traditional air conditioning system where the TR6 is controlling liquid injection in one direction only.

Traditional air conditioning / heat pump system

Figure 2: Traditional air conditioning / heat pump system

Illustrates a split air conditioning / heat pump system with two thermostatic expansion valves, one for cooling mode and one for heating mode. The thermostatic expansion valves each has a built-in check valve, which has the function of preventing ow in one direction and allowing the ow in the opposite direction. It means that one thermostatic expansion valve is controlling liquid injection into the indoor coil while the other thermostatic expansion valve is bypassing the metering device with the open check valve.

Danfoss

R64-1824.13

ABCDEFRD Distributor

Indoor coil

TR6 without check valve

4-way valve

Compressor

Outdoor coil

Thermostatic Expansion Valves, Type TR6

Simplied air conditioning / heat pump system (bi-ow)

Figure 3: Simplied air conditioning / heat pump system (bi-ow)

Illustrates a packaged air conditioning / heat pump system with a short distance between the indoor and outdoor heat-exchangers. The two TR6 valves from g 6 can be replace by one TR6 valve without internal check valve, making use of the bi-ow feature of this thermostatic expansion valve. The single valve is controlling the liquid injection in both directions. The normal ow direction marked with an arrow on the valve body should be used for the primary function, i.e. cooling or heating.

Thermostatic Expansion Valves, Type TR6

Product specication

Technical data

Max. operating temperature

• Thermostatic element:

◦ R22 / R407C: max. 100°C / 212°F ◦ R410A: max. 100°C / 212°F

• Valve body:160 °C / 320 °F

Max. working pressure PS / MWP

49 bar / 711 psig

Valve program

Standard versions

Refrigerants:

R22 / R407C and R410A

Operating range:

-10 to 15°C / 15 to 60°F

Setting:

• Fixed setting: ◦ Static superheat in accordance with customers' specications

• Adjustable setting:

R22 / R407C

Factory static superheat of 4 K / 7.2 °F

R410A

Factory static superheart of 3 K / 5.4 °F

Packing

Single or Multipack Industrial Pack for OEM specic valves only

Versions:

All valves are in straightway versions with or without internal check valve

Standard connections:

Inlet solder Equalizer capillary tube ¼ in. are; 24.3 in. length

Capillary tube length: 800 mm / 31.5 in.

⁄8 in. ODF x Outlet solder 3⁄8 in. ODF

Options on request

Capillary tube lengths(approx.): 450 mm / 17.7 in. 975 mm / 38.4 in.

Options for Connections: Inlet/Outlet:

Inlet: Solder ODM

⁄8 in., solder ODF 3⁄8 in., solder ODF ½ in., Chatle male 5⁄8 in. and aeroquip male 5⁄8 in.

G H

ABCDEFGHValve type

Code number

Evaporating temperature range in °C

Refrigerant

Rated capacity Qnom in Tons of refrigeration

Evaporating temperature range in °F

Max. working pressure in bar and psig

Date making (BC=Mexico, week 49, year 2017, weekday

D=Thursday)

XYDp (psi)

Mass ow lb/h

Thermostatic Expansion Valves, Type TR6

Outlet: Solder ODF female

⁄8 in., short and long tail.

⁄8 in., solder ODF ½ in., solder ODF 5⁄8 in., chatle female ¾ in., short and long tail, aeroquip

Equalizer:

Copper capillary tube size (approx.): Ø

⁄8 in.

Available congurations:

Solder ODM

⁄8 in., lengths 9.5 in., 16.9 in., 24.3 in., 31.7 in.

Solder ODF ¼ in., lengths 31.7 in. and 39.1 in. Flare nut ¼ in., lengths 9.5 in., 16.9 in., 24.3 in., 31.7 in.

Identication

Figure 4: Main valve data example:

Essential valve data is given on the power element.

Check valve capacity

Figure 5: Internal check valve for orice bypass in reverse ow (ow rate as a function of pressure dierential)

TC= 32 °C / 90 °F TI= 24 °C / 75 °F

Valve selection based on capacity calculation

As for extended capacity calculations and valve selection based on capacities and refrigerants, please refer to Coolselector®2. Rated and extended capacities are calculated with the Coolselector®2 calculation engine to ARI standards with the ASEREP equations based on laboratory measurements of selected valves.

Download Coolselector®2 for free at coolselector.danfoss.com.

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TR6 with xed setting

TR6 with adjustable setting

Bulb

Thermostatic element

Push pin seal

Balanced port

Check valve

Setting spindle for adjustment of static superheat

(SS)

Equalizer

Inlet connection

Outlet connection

Thermostatic Expansion Valves, Type TR6

Design and function

Table 1: Design and function

SSOSOSH

Static superheat

Opening superheat at nominal/ rated capacity

SS + OS = Operating superheat

Danfoss

67U02.10

45.5 mm / 1.79 in.

46.3 mm / 1.82 in.

7.5 mm /

0.30 in.

35.5 mm /

1.40 in.

29.4 mm /

1.16 in.

Danfoss

67U03.10

47 mm / 1.85 in.

40.5 mm / 1.59 in.

Ø14.35 mm /

0.565 in.

22.7 mm /

0.89 in.

Thermostatic Expansion Valves, Type TR6

Figure 6: Static/opening superheat graph

The central push pin is sealed with a robust seal (pos. 3) that ensures maximum tightness and minimum friction through the lifetime of the valve.

The balanced port (pos. 4) ensures minimal superheat changes when condensing pressure varies. This feature makes the valve ideal for bi-ow operation.

Static superheat (SS) can be adjusted with the setting spindle (pos. 6).

Example

Static superheat SS = 4 K / 7.2 °F (factory setting) or according to customer specication

Opening superheat at nominal/ rated capacity OS = 4 K / 7.2 °F

Opening superheat is dened as the required superheat to open the valve to nominal capacity

Dimensions and weights

Fixed setting

Table 2: Fixed setting

Weight 0.305 kg, 0.672 lbs

Danfoss

67U05.10

45.5 mm / 1.79 in.

46.3 mm / 1.82 in.

7.5 mm /

0.30 in.

43.1 mm / 1.70 in.

29.4 mm /

1.16 in.

Danfoss

67U06.10

47 mm / 1.85 in.

Ø14.35 mm /

0.565 in.

48.1 mm / 1.89 in.

22.9 mm /

0.90 in.

Thermostatic Expansion Valves, Type TR6

Adjustable setting

Table 3: Adjustable setting

Weight 0.361 kg; 0.795 lbs

Danfoss

R64-1825.11

ABC

TR6

RD Distributor

Compressor

Valve type

Orice no.

Rated capacity

Connections solder ODF

Code no.

Multi pack

(1)

R410A

(2)

R407C

R22

Inlet x Out‐

let [in.]

Pressure

equalization

[in.]

[KW]

[TR]

[KW]

[TR]

[KW]

[TR]

TR63––9.8

2.8113.1

3⁄8 × 3⁄8

1⁄4

067L5855

TR64––13.8

3.9

15.5

4.4

3⁄8 × 3⁄8

1⁄4

067L5856

TR65––16.4

4.7

18.4

5.2

3⁄8 × 3⁄8

1⁄4

067L5857

TR66––17.4

4.9

19.6

5.6

3⁄8 × 3⁄8

1⁄4

067L5858

TR67––20.9623.8

6.8

3⁄8 × 3⁄8

1⁄4

067L5859

TR6311.3

3.2––––

3⁄8 × 3⁄8

1⁄4

067L5955

TR6415.9

4.5––––

3⁄8 × 3⁄8

1⁄4

067L5956

TR6519

5.4––––

3⁄8 × 3⁄8

1⁄4

067L5957

TR6620.2

5.8––––

3⁄8 × 3⁄8

1⁄4

067L5958

TR6724.57––––3⁄8 × 3⁄8

1⁄4

067L5959

Thermostatic Expansion Valves, Type TR6

Ordering

R22 / R407C and R410A

Figure 7: Adjustable setting

Table 4: R22 / R407C and R410A

(1)

Kit part numbers consist of a valve, bulb strap, insulation tape, installation guide, and the following connectors:

Kit part numbers consist of a valve, bulb strap, insulation tape, installation guide, and the following connectors: 1 Chatle female 3⁄4 in. connector

1 Chatle female 3⁄4 in. connector 1 Aeroquip female 5⁄8 in. connector

1 Aeroquip female 5⁄8 in. connector 1 Flare 3⁄8 in. connector

1 Flare 3⁄8 in. connector

(2)

The rated capacity is based on:

The rated capacity is based on: Evaporating temperature te : 4.4 °C / 40 °F

Evaporating temperature te : 4.4 °C / 40 °F Condensing temperature tc : 38 °C / 100 °F

Condensing temperature tc : 38 °C / 100 °F Refrigerant temperature ahead of valve tl : 37 °C / 98 °F

Refrigerant temperature ahead of valve tl : 37 °C / 98 °F

Temperature range = -10 to 15 °C / 15 to 60 °F = 4 K / 7.2 °F TR6 with xed superheat setting are available upon request. Single pack = 1 valve kit in a box Industrial pack = 12 pieces in one box

Sizing

Figure 8: Sizing

Example:

Refrigerant=R410A

Thermostatic Expansion Valves, Type TR6

Evaporating temperature=(te=45 °F;pe=131 psig) Condensing temperature =(tc=110 °F;pc=368 psi Liquid line tl= 100 °F pressure drop in liquid line, drier and distributor system Dp2+ Dp1=35 psi Pressure drop in valve Dp = 368 - 131 - 35 = 202 psi Subcooling Δtsub = tc – tl=10 °F Evaporator capacity = 4.0 TR Correction factor from table= 1.02

The corrected evaporator capacity then becomes 4.0 × 1.02 = 4.08 TR As the selected valve must be equal to or slightly larger than the corrected evaporator capacity of 4.08 TR, the TR6 with orice 4 would be a suitable choice. Reference table below for rated capacities.

File name

Document type

Document topic

Approval authority

067U9601 Vr.AB

Manufacturers Declaration

China RoHs

Danfoss

Thermostatic Expansion Valves, Type TR6

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 5: Declaration for TR6

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Coolselector®2 - nd the best components for you HVAC/R system

Coolselector®2 makes it easy for engineers, consultants, and designers to nd and order the best components for refrigeration and air conditioning systems. Run calculations based on your operating conditions and then choose the best setup for your system design.

Download Coolselector®2 for free at coolselector.danfoss.com.

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Danfoss TR6 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual