ECR International CHB Application Manual page 27

FIGURE 18 - CCB Boiler with Multiple Zone Pumps WITH DHW Interface
CCB BOILER - WIRING DIAGRAMS
N.O.
DHW
FLOW
SWITCH
(0.50 GPM)
Argo ARM Zone
Pump Control
CCB BOILER
SECONDARY PUMPS WILL SHUTOFF DURING
DHW PRIORITY WHEN ARGO PRIORITY SWITCH
KEY 370
Key 72
1 2 4 5
3
REMOVE
JUMPER IF
USED
LOW VOLTAGE ROOM THERMOSTATS
(Zone 2-4)
ZONE PUMPS
IS ON.
6 7 8
27
NOTICE
Important:
• Before connecting to Argo
Control remove jumper on
terminal block. (Key 72)
• Before connecting Low
Water Cutoff remove jumper
on terminal block. (Key 370)
SET
PRIORITY
SWITCH TO
"ON"
L
N G
POWER SUPPLY
120V/60HZ
SYSTEM PUMP
CONNECTION
L1
(Hot)
Key 307 GND
NEU
120 VAC
POWER SUPPLY CORD
120V/60HZ
PN 240011074 REV C, [11/01/2017]
CH SYSTEM
PUMP (If used)