Bryant ZONE PERFECT PLUS ZONEBB2KIT Installation Instructions Manual page 10

5. Press SET TIME/TEMP button to flash 1 on small display.
Up and down buttons now move between option choices.
Or press END button to exit configuration mode.
OPTION 2—ENGLISH/METRIC
Select between Fahrenheit or Celsius operation. Factory default is
Fahrenheit.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 2 on flashing small
display.
3. Press SET TIME/TEMP button once to flash large display.
4. Use up or down buttons to alternate between F and C.
5. Press SET TIME/TEMP button again to flash 2 on small
display, or press END button to exit configuration mode.
OPTION 3—FAN ON WITH W
This selection determines whether the G (fan) output is to be ON
or OFF when any W (furnace or strip heat) output is ON. Most
furnaces and fan coils manage their own blowers and do not
require a separate G signal. For these applications, select OFF.
Some auxiliary heaters require a separate G signal to turn on the
blower. In this case, select ON. Factory default is OFF.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 3 on flashing small
display.
3. Press SET TIME/TEMP button once to flash large display.
4. Use up and down buttons to alternate between OF (off) and
ON.
5. Press SET TIME/TEMP button again to flash 3 on small
display, or press END button to exit configuration mode.
OPTION 4—USER INTERFACE ADDRESS
When 2 Zone Perfect Plus systems are connected together on the
same bus, each must have a different address. Address 01 is used
for single systems. Address 11 is selected for second User
Interface when present. Factory default is 01.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 4 on flashing small
display.
3. Press SET TIME/TEMP button once to flash large display.
4. Use up and down buttons to alternate between 01 and 11.
5. Press SET TIME/TEMP button again to flash 4 on small
display, or press END button to exit configuration mode.
OPTION 5—DISABLE ZONING
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When this option is selected, all dampers go fully open and zone
1 sensor (normally User Interface itself) becomes the sensor for the
entire home or business. In effect, the zoning system disappears
and is replaced by a single thermostat. In this mode, the ZONE X
where X is the zone number is not displayed. Factory default is OF
(off), zoning enabled. This option is used to check out the system
equipment. The User Interface acts as normal thermostat.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 5 on flashing small
display.
3. Press SET TIME/TEMP button once to flash large display.
4. Use up and down buttons to alternate between ON and OF
(off). Remember: OF (off) enables zoning, ON disables
zoning.
5. Press SET TIME/TEMP button again to flash 5 on small
display, or press END button to exit configuration mode.
OPTION 6—IGNORE LAT AND HPT TEMPERATURES
CAUTION: Leaving this selection ON can cause perma-
nent damage to HVAC equipment
This option, when ON, tells the system to ignore the LAT and HPT
temperature information. It should only be used for troubleshoot-
ing and to allow temporary operation with a failed or missing
sensor until the sensor can be replaced. Factory default is OF (off).
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 6 on flashing small
display.
3. Press SET TIME/TEMP button once to flash large display.
4. Use up and down buttons to alternate between ON and OF
(off). Remember ON is for temporary use only.
5. Press SET TIME/TEMP button again to flash 6 on small
display, or press END button to exit configuration mode.
OPTION 7—VARIABLE SPEED (ICM) OR PSC BLOWER
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If the furnace or fan coil contains a variable speed ICM blower, set
this option ON. For normal (PSC) blowers, set to OF (off). This
selection enables the system to use the special dehumidification
features available only with the ICM blower. Factory default is OF
(off).
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 7 on flashing small
display.
3. Press SET TIME/TEMP button once to flash large display.
4. Use up and down buttons to alternate between OF (off) and
ON.
5. Press SET TIME/TEMP button again to flash 7 on small
display, or press END to exit configuration mode.
OPTION 8—LEAVING AIR TEMPERATURE (LAT) SHUT-
DOWN TEMPERATURE
This option selects maximum allowable LAT in furnace and fan
coil auxiliary heat installations. Equipment will be turned off if its
LAT exceeds selected value. Values are 35, 40, 45, 50, 55, 60, 65,
70, or 75 corresponding to temperatures of 135° to 175°F. As LAT
nears selected limit, actions are taken by the system to try to reduce
the LAT. These include staging down multi-stage equipment and
limited conditioning of OUT zones.
When the LAT temperature approaches its limit, OUT zone
dampers progressively open, allowing more airflow into the duct
system. The temperatures of the OUT zones are also monitored. As
any OUT zone approaches the temperature of the most conditioned
zone, its damper closes again, preventing the OUT zone from
being over conditioned. If OUT zones are not available and LAT
temperature cannot be maintained at a safe value, the system will
shut down the equipment when the LAT temperature reaches its
limit. With earlier Comfort Zone systems, temperature set here
was temperature where actions were started. Shutdown tempera-
ture was 20°F higher than selected temperature. Therefore a setting
of 155°F on Zone Perfect is equivalent to 175°F on Zone Perfect
Plus.
HPT temperature limit for shut down is fixed at 115°F and cooling
LAT temperature limit for shut down is fixed at 40°F (down from
Zone Perfect which was 45°F.)
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Fan coils vary greatly in their LAT (leaving air temperature)
because of variations in the size of their heaters and their air flow.
This makes proper selection of LAT limits difficult. A value of 50
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