ECR International CHB Application Manual page 53

Kit installation shall be completed by qualified agency.
!
WARNING
Fire, explosion, asphyxiation and electrical shock
hazard. Improper installation could result in
death or serious injury. Read this instruction and
understand all requirements, including requirements
of authority having jurisdiction, before beginning
installation. Installation not complete until appliance
operation verified per Installation, Operation &
Maintenance Manual provided with boiler.
1.
Follow instructions TO TURN OFF GAS TO APPLIANCE
found on Operating Instructions label on boiler or in
Installation, Operation & Maintenance Manual. Verify all
electrical power to boiler is turned off.
!
WARNING
Electrical shock hazard. Turn OFF electrical power
supply at service panel.
2.
Verify all power to boiler is turned OFF at service panel.
3.
Follow Installation, Operation & Maintenance manual to
remove front jacket panel
!
WARNING
Burn hazard. Verify heat exchanger has cooled or
use appropriate personal protection equipment.
4.
Inspect combustion chamber through sight glass. Verify
flame is not present.
5. See wiring shown in figures 2 and 3.
DHW RESISTOR HARNESS AND RELAY
KIT 550003082
For use with Argo ARM Zone Pump Control
CHB BOILER
Description
DHW Resistor Harness
Isolation Relay (24 VAC)
Wire Nuts
Installation Instructions
Use this kit when the following applies:
• Use of Argo ARM Zone Control.
• Multiple 'CH' Zone and priority 'DHW' operation is
required.
• Indirect tank operation (DHW) is controlled using
mechanical thermostat.
If any of the conditions above apply:
a. Use piping diagram Figure 4 attached.
b. Priority switch on Argo Zone Control must be set to
"ON" position.
c. Must use anti-scald valve on domestic hot water
supply piping.
Kit Contents:
Qty.
1
1
7
1
PN 240011270 REV B [03/11/2016]