April 2007 / BULLETIN 30-21 3-Way Valves Installation and Servicing Instructions CONTENTS B5D, 8D, 12D & 16D 3-Way Heat Reclaim Valves . . . . . . . . . . . . . . 2 8D-SC, 12D-SC & 16D-SC 3-Way Split Condenser Valves . . . . . . . 5 10G79B, 10G711B & 10G711C 3-Way Hot Gas Defrost Valves . . . . 6 180 Solenoid Pilot Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page / Bulletin 30-21 TYPES B5D, 8D, 12D & 16D 3-WAY HEAT RECLAIM VALVES OPERATION “B” TYPE NORMAL (OUTDOOR) CONDENSER - De-energized See Figure 1. With the pilot valve de-energized, high side pressure is prevented from entering the cavity above the piston assembly. At the same time, the upper pilot port is open to suction pressure. The resulting pressure differential across the piston moves the piston-seat assembly to close the reclaim condenser port (upper main port).
Bulletin 30-21 / Page TYPICAL WIRING SCHEMATICS & ELECTRICAL CONSIDERATIONS B5D, 8D, 12D or 16D SINGLE COMPRESSOR SYSTEMS Wiring of single compressor units may require the use of relays to prevent high to low side bleed during periods when the compressor is not circulating refrigerant. This is necessary to prevent refrigerant migration to the low side of the system where it may condense into liquid and damage system components when the compressor restarts.
Page / Bulletin 30-21 TYPICAL PIPING SCHEMATICS Figure 3 SERIES CONDENSERS Normal Condenser 3-Way Heat Reclaim Valve T SERIES CONDENSERS R Reclaim Condenser Check Valve R Q (optional) Normal Condenser T 3-Way Heat Reclaim Valve – CV Q (optional) Normally Open Solenoid Valve (XPM) Normally Open Solenoid Valve (XPM) A8 Pressure Regulating Valve A9 Hot Gas Bypass Regulator A9 Hot Gas Bypass Regulator Receiver E E Compressor Reclaim Condenser A8 Pressure Regulating Valve Receiver Compr
Bulletin 30-21 / Page TYPES 8D-SC, 12D-SC & 16D-SC 3-WAY SPLIT CONDENSER VALVES The Split Condenser Valves are a relatively simple modification of the standard Heat Reclaim Valves. Figure 7 shows that the Split Condenser Valves only use the upper port; the lower port is always open. The location of the seat disc has been optimized such that when the valve is in the two condenser mode, the flow is split evenly between the two condensers. The pilot valve is different from the standard heat reclaim valve.
Page / Bulletin 30-21 Figure 7 Figure 6 shows a piping schematic to illustrate the general installation of the Split Condenser Valves. Sporlan recommends that recognized piping references be consulted for assistance in piping procedures. Sporlan is not responsible for system design, any damage resulting from system design, or for misapplication of its products. H 1.
Bulletin 30-21 / Page SERVICE 10G79B and 10G711B } Y U O Service parts for these valves may be ordered through your local Sporlan wholesaler. P e E R If a pilot assembly kit is required, note that they – unlike the internal parts kits – are not interchangeable. For a list of replacement part kits, see table on page 12. DISASSEMBLY Evaporator Q q { W R E Discharge I 1.64 Optional 1/2” Conduit Boss 10G711C } Y U O REASSEMBLY 1.
Page / Bulletin 30-21 TYPE 180 SOLENOID PILOT CONTROL VALVE The Type 180 Solenoid Pilot Control offers three outstanding features for refrigeration applications: Control influences the expansion valve action is by the creation of a pressure under the valve diaphragm, which is higher than the bulb pressure. This is how it is accomplished. • • • The Type 180 has two ports in the valve body — one high pressure and one low pressure.
Bulletin 30-21 / Page Upon re-energizing the solenoid coil, the low pressure port of the 180 opens and allows instantaneous relief of pressure under the thermostatic expansion valve diaphragm and normal operation of the thermostatic expansion valve. APPLICATION The Type 180 Solenoid Pilot Control may be connected to any number of thermostatic expansion valves as large as those nominally rated at 132 tons on Refrigerant 134a and 180 tons on Refrigerant 22.
Page 10 / Bulletin 30-21 because the seating discs operate on the same shaft. Therefore, an adequately sized Catch-All® should be installed ahead of the thermostatic expansion valve for complete protection. The Type 180 Solenoid Pilot Control is not recommended for application with other makes of thermostatic expansion valves. The reason is that Sporlan diaphragm assemblies are specially designed to withstand the admission of high side pressure through the external equalizer connection.
Bulletin 30-21 / Page 11 GENERAL INFORMATION 3-WAY VALVES INSTALLATION PRECAUTIONS 1. Do not attempt installation of the valve before pumping the entire system down. 2. The solenoid coil must not be energized unless it is installed on the valve. To do so would cause coil to overheat and burn out. 3. The solenoid coil should be fused in accordance with local codes. 4. If a service valve is installed ahead of a solenoid valve, it should be closed during service procedures.
Page 12 / Bulletin 30-21 REPLACEMENT PARTS Valve Type Kit Number Description of Contents Heat Reclaim Valves / Split Condenser Valves 8D7B/8D9B KS-8DB 8D7C/8D9C KS-8DC 8D9B-SC KS-8DB-SC 8D9C-SC KS-8DC-SC 12D11B/12D13B KS-12DB 12D11C/12D13C KS-12DC 12D11B-SC/12D13B-SC KS-12DB-SC 12D11C-SC/12D13C-SC KS-12DC-SC 16D17B KS-16DB 16D17B (12-03 and after) KS-16DB-A 16D17C KS-16DC 16D17C (12-03 and after) KS-16DC-A 16D17B-SC KS-16DB-SC 16D17B-SC (12-03 and after) KS-16DB-SC-A 16D17C-SC
