Install Instructions

11
AR861-2II & AR861-3II SEQUENCE OF OPERATION
IF THE PRIORITY SWITCH IS IN THE “OFF” POSITION

is illuminated.
2. The relay for the corresponding zone will then close.
3. A/R terminals will close starting the boiler.
4. The corresponding GZ/HZ terminals will be energized
with 120 Volts.
IF THE PRIORITY SWITCH IS IN THE “ON” POSITION
1. Zone 1 becomes the priority zone.
2. When zone 1 calls for heat, the priority zone is activated
and all other zones are deactivated (circulators for zones 2
-
cating a call for heat.
3. Zone 1 relay will close.
4. A/R terminals will close starting the boiler.
5. GZ 1/HZ 1 will be energized with 120 Volts.
2-Zone AR861-2II or 3-Zone AR861-3II
•
Auto-Reset Electronic Fuse Protection • – Eliminates
Nuisance Service Calls
15VA Transformer
• – Robust Components Provide Years
of Trouble -Free Service
Ice Cube Technology
• – Plug-In Replacement Relays
Priority Function
•
5-Year Warranty •
AR861-2II & AR861-3II CONTROL FEATURES