Manualshelf

Reference Guide

ManualsBrandsBraeburn ManualsHeating SuppliesEmergency Heat Switch - Standard Switch
11121314151617181920
Part No. RG-0508-001 9 The Braeburn Zoning Reference Guide
Understanding Zone Controllers
Braeburn zoning controllers serve as the brains of the zoning system. The zone controllers
have a built-in computer to monitor the thermostats and the HVAC equipment, and to open
and close the dampers. All equipment is connected to the zone panel.
The zone panel has connections to hook up thermostats.•
The zone panel has connections to the HVAC equipment.•
The zone panel has connections to power the zone dampers.•
The zone panel has a connection for 24-volt power just like the HVAC •
equipment.
The 3-zone panel has connections to the air plenum to monitor the air supply •
temperature.
When the zone panel is running, here is what happens:
At rest, when no zones are calling for heating or cooling, all dampers are open and the fan
is off.
As soon as a thermostat calls for a temperature change in one or more of the zones, the zone
panel reacts by making several changes. First, all dampers other than the calling zone(s)
close. Then, the heating or cooling equipment is turned on along with the corresponding fan
control. The system continues in this state until one of two things happen:
The  rst case occurs when the zone is satis ed. The equipment is turned off, along with the
fan control, and all dampers return to their open state.
The second case occurs when a zone is heating or cooling and an opposite call occurs
from one or more of the other thermostat zones. An opposite call is a call for heating when
the system is already cooling, or a call for cooling when the system is already heating. The
opposite call can be handled one of two ways:
Zone 1 Priority• ensures opposite calls are only answered if they are either from
zone 1, or match the last call from zone 1. This method is used when you have
an area that should get the highest priority, and the kind of call from that area sets
the mode (heating or cooling) for the rest of the building.
The zone panel can also be con gured to handle opposite mode calls with a
timer. This mode is called All Priority.