Brivis ZonePlus B061006, Installer Manual

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5
•
Multi-Temperature Set Point systems can have up to four
controlled zones where each zone has independent
temperature set points. We do not recommend the use of a
Common Zone in these applications
•
Single Temperature Set Point systems can have up to four
controlled zones where each zone has the same temperature
set point. An optional Common Zone is recommended for this
type of application
A zoning system reduces the effective size of the air
distribution system as dampers open and close to meet the
needs of the zones. The aim is to ensure that the distribution
system does not become so small that the reduction in airflow
causes one or more of the following problems:
•
excessive air, noise or drafts
•
the equipment shuts down because predetermined limits are
exceeded
•
the life of the equipment is reduced through stress-related excess
temperatures or cycling
3.0 DESIGNING THE COMFORT SYSTEM
Objective: to maintain a minimum airflow through the system when only
one zone requires conditioning, yet still provide sufficient airflow when all
design zones require conditioning, for both heating and cooling modes.
Multi Temperature Set Point - Design Framework:
•
Each zone has independent temperature set points
•
In Heating mode there is no requirement for a Constant Zone
•
In Refrigerated Cooling mode we recommend you nominate your
largest zone as the Constant Zone (typically default value Zone A -
“ID93:1” ) to satisfy the system’s minimum air quantity requirement.
Usually this is the zone which incorporates the return air grille
•
A Common Zone is not recommended as MTSP ZonePlus offers
optimum independent zone temperature control
Single Temperature Set Point - Design Framework:
•
Each zone has the same temperature set point
•
The design guidelines allow for the inclusion of a Common Zone
Step by step tasks:
1. Assign Zones
a.
Determine, in consultation with the homeowner, whether the system
is to be designed primarily for comfort or energy savings
b. Assign the zones and determine how many zones are to operate
simultaneously, for both heating and cooling modes
c. Determine whether the system is to be Single Temperature Set Point
or Multi Temperature Set point
d. Complete the Home Owner Comfort Schedule (in the ZonePlus
Owner’s Manual) to ensure that the installed system will meet the
home owner requirements
2. Size the equipment
a.
Determine Design Conditions; i.e. Indoor Control Temperatures at
Ambient Design Temperatures
b. Calculate peak heating and cooling load estimates for each zone (e.g.
Brivis SuperSizeGuide)
c. Calculate cooling BLOCK LOAD (maximum simultaneous load)
d.
Satisfy both kW and AIRFLOW capacity requirements for both
heating and cooling modes