Changing Zone Sizes
Selecting Type of Thermostat
Zone1
Zone2
Zone3
400 CFM
Zone CFM
3 x 400/1200
Calculate
Weighted Value
3 x 600/1200
3 x 200/1200
1.0 zones
Zone Size
1.5 zones
0.5 zones
3.0 zones
600 CFM
200 CFM
1200 CFM
Zones can be set to the same size or each zone can be set
differently. The size of the zones are in a weighted zone value.
If zones are equal size, the weighted zone value is 1.0 zones.
The examples below show a 3-zone installation with different
zone sizes.
If gas/electric equipment is selected, only a heat/cool thermostat
can be used in all zones. If heat pump equipment is selected, a
heat/cool or a heat pump type thermostat can be used in Zone1.
Thermostats in Zones 2 and 3 are always heat/cool types.
Zone size is calculated by multiplying the total number of zones
(3) by the zone CFM (400) divided by the total CFM (1200). The
calculation can also be done using square footage or percent
demand.
Important!
The total of the zone sizes should always equal the total number
of zones.
Press Yes to select the thermostat type
used in each zone.
Press Yes to change the zone sizes or
press NEXT to continue to next menu
selection.
Press Yes to set all zone sizes the
same or press No to set the size of
each zone.
Press Up or Down to set the size of
the zone. Press NEXT to set the size
of the next zone.
Press Up or Down to set the size of
the zone. Press NEXT to set the size
of the next zone.
Press Up or Down to set the size of
the zone. Press NEXT to continue to
the next menu selection.
Press Up or Down to change the
number of stages. Press NEXT to
continue.
Press Yes to select the heat/cool
thermostat for that zone. Press No to
see other thermostats that can be
used in that zone.
Press Up or Down to change the
number of auxiliary heating stages.
Press NEXT to continue.
Press Up or Down to change the
heating temperature limit. Press
NEXT to continue.
Press Up or Down to change the
outdoor temperature to switch to
fossil fuel heating. Press NEXT to
continue.
Press Up or Down to change the
cooling temperature limit. Press
NEXT to continue.
Press Up or Down to change the
number of zones being used. Press
NEXT to continue.
Equipment Type
DFHP Y/N
Select Tstat
Options Y/N
Change Zone Size
Y/N
Are All Zones
Equal Size Y/N
Zone 1 1.0
Size U/D/NEXT
Zone 2 1.5
Size U/D/NEXT
Zone 3 0.5
Size U/D/NEXT
Compressor 1
Stages U/D/NEXT
Zone 1 1Stg HC
Tstat Y/N
Aux Heating 1
Stages U/D/NEXT
Htg Temp Lmt 160
U/D/NEXT
Fossil Fuel 35
OBP U/D/NEXT
Clg Temp Lmt 45
U/D/NEXT
Total Zones 3
Used U/D/NEXT
10
There are a number of bypass methods that can be used with the
panel as shown below.
If the ducts are sized for larger airflow and there is only 2 or 3
zones, no bypass may be acceptable. Or each zone damper
can be set to not fully close. The actuator has a cam that can
set the closed position from fully closed to about 50% closed
to provide some bypass.
If a mechanical bypass damper is being used with a bypass
duct, select Ext Baro.
The bypass damper must be sized to bypass the total system
CFM minus the CFM of the smallest zone. The weights on the
arm of the bypass damper should be set so the damper is
fully open and open enough to eliminate any noise that may
occur when only the smallest zone damper is open.
Bypass Control
No Bypass
Barometric Damper with Bypass Duct
With actuator in the Open position,
loosen screw, rotate cam CW and
tighten screw.
Model ProBMR-XX
Bypass Mechanical Damper
Press Yes to select dual fuel heat
pump. If equipment type is incorrect,
press Cancel and see Selecting
Equipment on page 3.
