©Johnstone Supply eCatalog 216

INSTALLATION & MAINTENANCE SUPPLIES Software & Manuals

Pressure Enthalpy Without Tears Manual • Designed for the service tech to aid in troubleshooting, evaluation and start up processes • Reviews and explains the pressure enthalpy chart

• Covers superheat, subcooling and the pressure/temperature relationship • Additional sections on plotting systems, calculating system capacity/efficiency and common issues in the field

Each

Order # Mfg. #

G37-390 PEWTPM

165.00

System Performance: Maximizing Energy Efficiency • Explains the proper techniques and procedures to verify and optimize HVAC system performance

• Covers airflow, critical charging procedures, psychrometrics and combustion efficiency • Prepares readers for taking the online System Performance Certification exam

Each

Order # Mfg. # G37-392 SPVPM

125.00

Dual Element Cartridge Fuses • For circuit protection use – same size as ordinary fuses • Long time lag prevents useless shutdowns caused by ordinary fuses opening on starting currents or other harmless overloads • For motor protection use size about 125% of motor running current

• On normal installations guards motor against burnout from overloads or single phasing, reduces heating in switches and panels • Operates cooler than any other type fuse, prevents needless blows and heat damage • Rejection type

A

B

C

D

Each

10 Lot

50 Lot

Fig. Order #

Mfg. #

Length

Diam. 9/16" 9/16" 9/16" 9/16"

Type

Amps

Volts 250 250 250 250 250 250 250 250 250 250 600 600 600 600 600 600 600 600 600 600

Pkg. Qty.

G31-522 G31-523 G31-524 G31-525 G31-540 G31-526 G31-541 G31-527 G31-528 G31-529 G31-816 G31-817 G36-637 G31-818 G36-638 G31-819 G31-820 G31-821 G31-822

A A A A A A A A A B A A C A D A D A A B

ECNR15 2" ECNR20 2" ECNR25 2" ECNR30 2" ECNR35 3" ECNR40 3" ECNR45 3" ECNR50 3" ECNR60 3" ECSR15 5" ECSR20 5" ECSR25 5" ECSR30 5" ECNR10 5-7/8" ECSR35 5-1/2" ECSR40 5-1/2" ECSR50 5-1/2" ECSR60 5-1/2" ECSR10 7-7/8"

Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5 Class RK5

15 20 25 30 35 40 45 50 60 15 20 25 30 35 40 45 50 60

10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 5

10.99 9.49 8.65 10.99 9.49 8.65 10.99 9.49 8.65 9.45 8.49 7.75 17.49 15.49 13.99 17.49 15.49 13.99 17.49 15.49 13.99 17.49 15.49 13.99 17.49 15.49 13.99 41.99 37.99 34.49 23.49 20.99 19.49 23.49 20.99 19.49 23.49 20.99 19.49 23.49 20.99 19.49 40.49 36.49 32.99 40.49 36.49 32.99 40.49 36.49 32.99 40.49 36.49 32.99 40.49 36.49 32.99 75.00 69.00 65.00

13/16" 13/16" 13/16" 13/16" 13/16" 1-1/16" 13/16" 13/16" 13/16" 13/16" 1-1/16" 1-1/16" 1-1/16" 1-1/16" 1-1/16" 1-5/16"

100

G36-643 ECSR45 5-1/2"

100

5

1111

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