Crown Boiler Phantom X series, Installation And Operating Instructions Manual, Page: 64 / 136

64
L N
120V
NOTE: 1.
INSTALL OVER-CURRENT PROTECTION IN ACCORDANCE WITH AUTHORITY HAVING JURISDICTION OR, IN THE ABSENCE OF SUCH REQUIREMENTS, FOLLOW THE NATIONAL ELECTRIC CODE, NFPA 70, AND/OR CSA C22.1 ELECTRCAL CODE. DO NOT PROVIDE OVER-CURRENT PROTECTION GREATER THAN 15 AMPERES. IF IT BECOMES NECESSARY TO PROVIDE GREATER AMPERES (BECAUSE OF THE NUMBER OF BOILERS PROVIDED) USE SEPARATE CIRCUITS AND OVER-CURRENT PROTECTION FOR ADDITIONAL BOILER.
2.
BOILER-TO-BOILER WIRING CAN BE DONE WITH RJ45 PLUGS (SHOWN) OR USING SCREW TERMINALS A, B, AND C LABELED 'BOILER-TO-BOILER'.
3.
BOILERS WITH DELTA DISPLAY: ENERGY MANAGEMENT SYSTEM WIRING CAN BE DONE WITH RJ45 PLUGS (SHOWN) OR USING SCREW TERMINALS A, B, AND C LABELED 'EMS (DELTA ONLY)'.
4.
BOILERS WITH PANASONIC DISPLAY: SCREW TERMINALS A, B, AND C LABELED 'EMS (DELTA ONLY)' ARE NOT USED. SCREW TERMINALS A, B, AND C LABELED 'BOILER-TO-BOILER' MAY BE USED TO CONNECT AN ENERGY MANAGEMENT SYSTEM ONLY IF INTERNAL SEQUENCER IS DISABLED.
DISCONNECT PROTECTION/
OVERCURRENT
L2
GND
L1
120/60/1 POWER SUPPLY
ITEMS SUPPLIED BY INSTALLER
(OPTIONAL)
SERVICE SWITCH
GND
TO
ADDITIONAL
BOILERS
DHW
AQUASTAT
BOILER
CIRCULATOR
DHW
CIRCULATOR
BOILER
CIRCULATOR
REMOVE JUMPER(S) TO CONNECT EXTERNAL LIMIT(S).
REMOVE JUMPER(S) TO CONNECT EXTERNAL LIMIT(S).
BOILER 1 (WITH SEQUENCER MASTER ENABLED)
BOILER 2
REMOVE JUMPER
TO ENERGY MANAGEMENT
SYSTEM (IF USED, SEE
NOTES 3 AND 4)
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
POWER ZONE 1 ZONE 2 ZONE 3 ZONE 4
LED
INDICATORS
N
N
N
N
N
N
H
H
H
H
H
H
PRIMARY
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 4
120 VOLT CIRCULATORS
PRIORITY
NORMALLY CLOSED
120 VAC INPUT
ZC
ZR
N
H
MASTER OFF NORMAL OFF OFF OFF OFF 4 MIN/24 HR OFF
SLAVE
PRIORITY ON
RESET
PRIMARY PUMP ON
POST PURGE ON
PRIOR. PROTECT ON PUMP EXERCISE ON
30 SEC/2 WK
LOW LIMIT (ZC) ON
MAIN
PRIORITY
X
X
X
X
END SWITCH
EXPANSION
ZONE 1
ZONE 2
ZONE 3
ZONE 4
NET
A
B
C
C
W
R
R
R
R
1
W
W
W
C
C
C
2
THERMOSTATS
24 VAC
PRIORITY
BT LT
ZC4
ZC3
ZC2
ZC1
1
2 3
OFF
ON
ZONE CONTROL
CIRCULATOR PANEL
HEATING THERMOSTATS
RJ45
CONNECTOR
TO NEXT BOILER
IN SEQUENCE (IF REQUIRED)
Figure 42b: DHW Priority/Circulators (with Crown PN 3501505 Zone Panel) Piped Off
System Header W
iring Schematic for Heating Zone Circulators
CROWN PN 3501505
VIII. Electrical
(continued)