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Solenoid Valves
Emerson Climate Technologies
Installation
Solenoid Valves having a spring loaded piston or dia-
phragm may be installed and operated in any position,
but installing more than 90° from vertical is not recom-
mended since dirt or debris may collect in the solenoid
area and prevent it from operating. An adequate strainer
or lter drier should be installed ahead of each solenoid
valve to keep scale, pipe dope, solder, and other foreign
matter out of the valve.
When installing a solenoid valve, be sure the arrow
on the valve body points in the direction of refrigerant
ow.
When brazing valves with extended solder type con-
nections do not use too hot a torch and point the ow
away from the valve. These valves do not normally need
to be disassembled before installation; if the valve does
not have extended connections, disassemble the valve
before brazing. Wet rags or chill blocks are recom-
mended during brazing. They are needed to keep the
valve body cool so that body distortion on close-coupled
valves will not occur. Allow the valve body to cool before
replacing the valve’s operating insides to ensure that the
seat material and gaskets are not damaged by the heat.
When reassembling, do not over torque.
Application Overview
Application Product Family
Liquid, Suction Line Service 240RA/540RA
or Hot Gas By-Pass 50RB
100RB
200RB/500RB
Pressure Differential Valve for Gas Defrost 710RA
713RA
Emerson Solenoid Valves
Emerson offers a complete line of refrigerant solenoid
valves for refrigeration and air-conditioning applications.
As part of Emerson’s commitment to the industry, each
valve undergoes stringent Emerson testing to ensure
fail-safe operation. And, with the lowest external leak
rates in the industry, Emerson solenoid valves ensure
precise refrigerant ow, preventing system failures and
aiding in environmental protection.
- Technical 1
- Help Guide 1
- Introduction 3
- Table of Contents 4
- Thermal Expansion 5
- Thermal Expansion Valves 6
- Internal Equalizer 6
- Factory Settings of TXVs 7
- External Equalizer 7
- Superheat 9
- Approximate Methods 9
- Superheat Adjustment 9
- TXV Selection 10
- Application Tips 11
- Remote Bulb Well 11
- Remote Bulb Location 11
- Operation at Reduced Capacity 12
- Gas & Gas Cross-Charges 14
- Which Charge to Use? 14
- Adsorption Charges 14
- Liquid Cross-Charges 14
- Other TXV Considerations 15
- Refrigerant Code Names 16
- Emerson MOP 16
- TXV Charge Code Selector 17
- Electronic Valves 18
- & Controls 18
- Electronic Valve Applications 19
- Emerson Climate Technologies 20
- EC3-32 and EC3-33 Systems 20
- Temperature Sensor ECN-N60 20
- Pressure Transmitter – PT4 21
- TXV Controller – EC3-X32 21
- TXV Controller – EC3-X33 22
- Universal Driver – EXD-U00 22
- XEV22 Superheat Controller 22
- Electrical Control Valve – EX 23
- Third Party Controller 23
- Electronic Valves Programming 24
- Solenoid Valves 25
- What Are Solenoid Valves? 26
- 2. Pilot Operated Valve 27
- Types of Solenoids 27
- 2-Way Valves 27
- Solenoid Valve Selection 28
- Application Overview 29
- System Protectors 30
- Absorption vs. Adsorption 32
- Types of Filter driers 32
- Dirt, Waxes, Acid 32
- Sightglass 33
- Suction Filter Driers 34
- Internal Design 35
- Compressor Burnout 36
- Filter Driers for Heat Pumps 37
- Removing Contaminants 37
- One-Way Flow, Both Directions 37
- Simplifying While Servicing 38
- Emerson System Protectors 38
- Regulators 39
- EVAPORATOR 40
- INTERMEDIATE 40
- Figure 3: EPRB(S) Brass Body 41
- (Emerson EPRB) 42
- HeadMaster HP Operation 43
- solenoid VAlVe 46
- Figure 8 47
- Adjusting the Set Point 48
- Oil Controls 49
- Emerson Oil Controls 50
- Temperature 51
- Pressure Controls 51
- Temperature Pressure Controls 52
- TS1 Introduction 52
- Housing Variants 52
- Temperature Sensing 52
- Setpoints 53
- Electrical Contacts 53
- Contact Function 53
- PSC Pressure Switch 56
- PSC Introduction 56
- FSX Introduction 57
- Basic Rules of 58
- Good Practice 58
- Basic Rules of Good Practice 59
- Troubleshooting 61
- SYSTEM TROUBLESHOOTING GUIDE 62
- No Superheat At Start Up Only 63
- Superheat Is Erratic Or Hunts 63
- Troubleshooting Ball Valves 68
- Troubleshooting Regulators 69
- R404A/R507A 70
- Wholesaler/Contractor Support 72
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