Carrier 42 SERIES - Manual (Page 2)

CONTENTS
Page
CONTROL SELECTION GUIDE . . . . . . . . . . . . . . . 3
STANDARD WIRING PACKAGES . . . . . . . . . . . . 4-8
Manual Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . 4
Thermostatic Fan Control,
2-Pipe Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Thermostatic Fan Control,
2-Pipe System with Safety Cycle . . . . . . . . . . . . 5
Thermostatic Electric Valve Control, 2-Pipe . . . 5
Thermostatic 2-Pipe Auxiliary Electric Heat
with Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermostatic 2-Pipe Total Electric Heat
with Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermostatic Valve Control, 4-Pipe . . . . . . . . . . . 8
ELECTRIC HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Heater Construction . . . . . . . . . . . . . . . . . . . . . . . . . 9
Heater Electrical Data . . . . . . . . . . . . . . . . . . . . . . . 9
REMOTE-MOUNTED CONTROLS . . . . . . . . . . . . 10
Standard 3-Speed Switch . . . . . . . . . . . . . . . . . . . 10
Combination Thermostat/3-Speed Switch . . . . 10
Wall Thermostat, 2-Pipe . . . . . . . . . . . . . . . . . . . . 10
Wall Thermostat, 4-Pipe . . . . . . . . . . . . . . . . . . . . 10
ALTERNATE WALL THERMOSTATS . . . . . . . . . 11
Wall Thermostat (Honeywell) with Manual
3-Speed Fan Switch and ON-OFF Switch . . . 11
Wall Thermostat (Sunne) with Manual
3-Speed Fan Switch and ON-OFF Switch . . . 11
Page
UNIT MOUNTED CONTROLS . . . . . . . . . . . . . . 12,13
Standard 3-Speed Switch . . . . . . . . . . . . . . . . . . . 12
Combination Thermostat/3-Speed Switch . . . . 12
Combination Thermostat/ON-OFF
Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Two-Pipe Thermostat . . . . . . . . . . . . . . . . . . . . . . . 13
Four-Pipe Thermostat . . . . . . . . . . . . . . . . . . . . . . 13
Automatic Changeover . . . . . . . . . . . . . . . . . . . . . 13
BASIC DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . 14
FIELD PIPING CONNECTIONS . . . . . . . . . . . . . . 15
VALVE PACKAGES . . . . . . . . . . . . . . . . . . . . . . . 16-19
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Two-Way Motorized Control Valve . . . . . . . . . . . 18
Two-Way Motorized Control Valve
with Aquastat Bleed Bypass Line . . . . . . . . . . 18
Three-Way Motorized Control Valve . . . . . . . . . 19
No Motorized Control Valve . . . . . . . . . . . . . . . . . 19
VALVE PACKAGE ARRANGEMENTS . . . . . . . 20-23
PIPING COMPONENTS . . . . . . . . . . . . . . . . . . . . 24-27
Cv FACTOR vs WATER PRESSURE DROP . . . 28
SYSTEM COMPONENT WORKING
PRESSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
COPPER WATER TUBE AND JOINT MATERIAL
PRESSURE RATINGS . . . . . . . . . . . . . . . . . . . . . 30
CORRECTION FACTORS FOR GLYCOL . . . . . . 31
STANDARD ACCESSORIES AND OPTIONS . . 32
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