Emerson Fluid Chiller Guía para resolver problemas Pagina 17
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Thermal Expansion Valves
Emerson Climate Technologies
HW35
AIR CONDITIONING COMMERCIAL REFRIGERATION LOW TEMPERATURE
OLD CHARGE REPLACEMENT OLD CHARGE REPLACEMENT OLD CHARGE REPLACEMENT
REFRIGERANT R12/R134a
F OR FL — —
FC FC —
FW FW FWZ
FG55 FC FG35 — —
FW55 FW35 FW35 FW15
FQ55 FQ35 FW15
FGA
FLA — —
FGS FGS35 FGS35
FWS FWS FWS
FWS FWS FWS FZ/MZ FZ/MZ
FX FX
REFRIGERANT R22
H OR HL — —
HC HC —
HW HCA HW HWZ
HG100 HG65 — —
HW100 HW65 HW65 HW35
HQ100 HC HQ65 HQ35
HGA
HLA — —
HW85 HW85 — —
HGS HGS65 HGS65
HWS HWS
HWS HWS HWS HWS HZ HZ
HX HX
REFRIGERANT R502/R404A/R507A
RL — —
RW RC/SC/PC RW RWZ RZ
RW110 RW65 RW65 RW35 RW45/SW45
RWS RWS
RZ RZ/SZ/PZ
HZ
HC
— —
FW15/MW15
RC/SC/PC
RWS RWS RWS RWS
FZ
TXV Replacement Charge Symbols Cross Reference
Old Bulb Charges vs. New Replacement Bulb Charge
NOTE: ALL OTHER CHARGE SYMBOLS MUST BE REPLACED WITH AN IDENTICAL MODEL OR AT THE OPTION OF THE EMERSON TECHNICAL SERVICE DEPART-
MENT WHO MAY MAKE ENGINEERING AUTHORIZED SUBSTITUTION OF EQUIVALENT TYPE TO PROVIDE EQUIVALENT OPERATION AND PERFORMANCE.
NOTE: FOR FIELD REPLACEMENT PURPOSES, HC CAN BE USED TO REPLACE HCA.
TXV Charge Code Selector
Applications Operating Ranges
R-134a/R-12
Domestic Refrigerators and Freezers, Ice Makers,Dehumidiers,
Transport Refrigeration, Medium Temperature Supermarket
Equipment,Medium Temperature Commercial Equipment
MC/FC
MZ/FZ
MW15/FW15 (MOP)
MW35/FW35 (MOP)
MW55
R-22
Residential Air Conditioners &Heat Pumps, Commercial and
Industrial Chillers, Medium Temperature Supermarket
Equipment, Commercial Air Handlers
HCA/HAA AIR COND. & HEAT PUMP
HW/HW100
HC
HW65 (MOP)
HZ
R-404A/R-507A/R-502
Low Temperature Cases, Ice Makers, Commercial Air Handlers,
Conditioners, Soft Ice Cream Machines, Environmental Chambers
SC/RC
SZ/RZ
SW45/RW45 (MOP)
R-410A ZW195/ZAA
-50 -40 -30 -20 -10 0 +10 +20 +30 +40 +50
- 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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