©Johnstone Supply eCatalog 216

REFRIGERATION & AIR CONDITIONING Air Conditioning Controls

Air Conditioning Time Delay Sequencers • For residential and commercial central and unitary air conditioning systems • Prevents compressor short cycling

• 250VAC; 4.9 FLA, 29.4 LRA, resistive load maximum 10A • Maximum pilot duty 125/250VAC: 125VA • B10-500 replaces Carrier # T34-111 , HK25MJ172 and HK25RC010 • B10-502 replaces Carrier # T34-112 , HK25MJ174 and HK25 RC011 • B11-252 replaces Carrier # T34-110 , HK25MJ173 and HK25RC012; Rheem-Ruud # T34-123 and 47-18795-01

• Provides automatic resetting of safety devices during power outage, low and high pressure cutouts and thermostat jiggling • Allows system pressures to equalize before compressor restart • 125VAC; 9.8 FLA, 58.8 LRA, resistive load maximum 15A

Each

Order # Mfg. # B10-500 T34-131

Time Delay

Volts

Wiring Style

5 Min. 5 Min. 5 Min.

208/240V

Fig. 2 Fig. 2 Fig. 1

339.00 355.00 375.00

B10-502 B11-252

T34-133 T34-153

120V

24V

P20 Series Air Conditioning Limit Controls • Shuts compressor off when excessive pressure develops • Specially designed for commercial and residential air conditioning units • Can be used with all non-corrosive refrigerants • Dust tight contact unit has male quick connect terminals

• Capillary is 36" long with 1/4" sweat connection • 16A @ 120VAC; 8A @ 240VAC; maximum volts 300 AC • Screwdriver adjustment slot • Mounting bracket supplied on all models Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Each

Order #

Mfg. #

Switch Action

Pressure Range PSIG

Diff. PSIG

Max. Pressure

L36-926 L36-927 L36-928 L36-929

P20BB-1 Open-on-Fall P20DB-1 Open-on-Rise

7 to 150

Manual Reset Manual Reset

250 450 250 450

205.00 249.00 219.00 239.00

100 to 425

P20EB-1 SPDT P20EB-2 SPDT

7 to 150

30 Fixed 70 Fixed

100 to 425

Solenoid Operated Reversing Valves • For unitary, spilt systems and window-type heat pump applications • Instantaneously reversing • Brass body construction with copper tubes • Operates on pressure differential between high and low sides of refrigerant system • Valves come less coil — proper coil should be ordered separately from the chart below

• Capacity ratings listed below are suggested capacity in tons • Reversing valves have specific suction and discharge tube sizes as well as restricted refrigerant capacity; therefore the valves are not interchangeable Warning: Keep valve cool while brazing into heat pump.

A

B

R22 Min. Capacity

C

D

Each

Fig. Order # Mfg. #

R22 Max. Capacity Discharge Conn. Suction Conn.

B14-872 B14-873 B14-874 B14-875 B14-876

A B C D E E E E

V2-408060-170 0.75 V2-408060-270 0.75 V2-4100F0-370 0.75 V2-410060-470 0.75 V6-412080-170 1.0

1.6 1.6 1.6 1.6 4.3 4.3 6.8 7.7

3/8" 3/8" 3/8" 1/2" 1/2" 1/2" 3/4"

1/2" 1/2" 5/8" 5/8" 3/4" 7/8" 7/8" 7/8"

315.00 375.00 269.00 389.00 585.00 595.00 795.00 845.00

3/8" O.D.

B14-877 V6-414080-170 1.0

B14-878 B14-879

V10-414080-170 3.0 V10-414120-170 3.0

E

Coils for V1/V2/V3/V6/V10/V12-4 Series Valves

Each

Order # Mfg. #

Coil Voltage

Watts

Color Code

B14-880 LDK-110000-070

24

4 4 4

Red

125.00 135.00

B14-881 B14-882

LDK-310000-070 LDK-410000-070

120

Black Green

208/240

75.00

1318

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