Carrier 42 SERIES User Manual
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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