ECR PENNCO KSC STEAM Installation, Operation And Maintenance Manual page 10

TH-1 Thermostat (Millivolt)
TH-2 Thermostat (24 Volt)
TH-3 Thermostat (Line Voltage)
TR-1 Transformer (120V/24V/40VA)
TR-2 Transformer (120V/24V/50VA)
LGV24 Volt Gas Valve
PS Pressure Switch
WIRING CODE
Line Voltage By Factory
Low Voltage By Factory
Line Voltage By Installer
Low Voltage By Installer
STEAM WIRING W/BECKETT BURNER
COMPONENT CODING
MR-PS Manual Reset Pressure Switch
Control Terminal
1K
1K1
1K2
LS
MS
NOTE: Not all components listed are used in all control systems.
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Relay Coil
Relay Contacts
Relay Contacts
Limit Switch
Manual Switch
CIR Circulator
ECO Energy Cut-Off
PSC Pilot Safety Coil
Wire Connection
LWCO Low Water Cut Off
EWF Electric Water Feeder
PG Power Generator