
30
* Not all components listed are used in all control systems.
NOTES:
* Switches are shown in position during the heating
cycle.
* If any of the original wiring supplied with the boiler
is replaced it must be replaced with like wire size and
type of insulation or equivalent.
• When installed boiler must be electrically bonded to
ground in accordance with the requirements of the
authority having jurisdiction or, in the absence of such
requirements, with the National Electrical code, ANSI/
NFPA 70, and/or the Canadian Electrical Code Part 1,
CSA C22.1, Electrical Code.
• Install fused disconnect switch between boiler and meter
at convenient location.
Hot water control and intermittent ignition wiring for boilers
with fail safe relay. See
figure 26
.
WIRING CODE KEY
LINE VOLTAGE BY FACTORY
LOW VOLTAGE BY FACTORY
LINE VOLTAGE BY
INSTALLER
LOW VOLTAGE BY
INSTALLER
COMPONENT KEY
CODING
Thermostat (millivolt)
TH-1
Thermostat (24 Volt)
TH-2
Thermostat (Line Voltage)
TH-3
Transformer (120V/24V 40VA)
TR-1
Transformer (120V/24V 50VA)
TR-2
24 Volt Gas Valve
LGV
24 Volt Gas Valve
LGV-1
Pressure Switch
PS
Manual Reset Pressure Sw.
MR-PS
Control Terminal
Relay Coil
1K
Relay Contacts
1K1
Relay Contacts
1K2
Limit Switch
LS
Manual Switch
MS
Circulator
CIR
Energy Cut-Off
ECO
Pilot Safety Coil
PSC
Wire Connection
Low Water Cut Off
LWCO
Electric Water Feeder
EWF
Power Generator
PG
Roll-Out Switch
RSW
COMPONENT AND Wire CODING Keys
The keys that follow pertain to the
HOT WATER
CONTROL AND INTERMITTENT IGNITION WIRING
diagrams.
ELECTRICAL WIRING
Содержание CDVB-100
Страница 15: ...15 HORIZONTAL VENT INSTALLATION INSTRUCTIONS Figure 9 Figure 7a Vent Cap Figure 7b Figure 8 ...
Страница 22: ...22 HORIZONTAL VENT INSTALLATION INSTRUCTIONS Figure 16 Termination Clearances ...
Страница 31: ...31 PILOT PILOT ELECTRICAL WIRING Figure 26 HOT WATER CONTROL AND INTERMITTENT IGNITION WIRING ...
Страница 44: ...Columbia Company Main offices and factory Pottstown PA ...