BAC-120063CW-ZEC FlexStat
8
Installation and Configuration Guide, Rev. G
NOTE: The BAC-120063CW-ZEC FlexStat comes
preconfigured for a 2H/2C RTU and zone
device number range of 1000000 through
1000016.
Select:
1.
APP: ROOF TOP
or
HEAT PUMP
.
2.
OPT:
Match stages of heating and cooling to the
RTU or HPU.
3. Under
ADDITIONAL SETUP
> SENSORS
,
change
IN2
from NONE to
DAT
.
SENSORS
IN2:
DAT
NOTE:
The default Type
III
(10K ohm) thermistor
setting for DAT can be changed to Type
II
(if needed) in
ADVANCED > INPUTS > 2:
DISCH AIR TEMP > SENSOR: >.
INPUT #2
DISCH AIR TEMP
VALUE: 55.0°F
CAL. OFFSET: 0.0
OUT-OF-SERVICE: FALSE
FILTER WEIGHT: 6
SENSOR:
>
10K TYPE III
4. Under
ADDITIONAL SETUP
, change other
defaults if needed.
5. Under
ZONE DEV INS RANGE
, the default
base
zone device numbers
(with up to 16 zones of Sim-
plyVAV controllers) start at 1000001 as a default.
To change the default base numbers to 2000001,
3000001, or 4000001, select the desired range.
ZONE DEVICE INSTANCE
RANGE:
1M = 1000001–1000016
2M = 2000001–2000016
3M = 3000001–3000016
4M = 4000001–4000016
1M
NOTE:
If the Zone Device Instance range is
changed from the default, change the
FlexStat’s Device Instance to correspond
with the range (e.g., 3000000 for a range of
3000001—3000016).
If the controllers are going to be networked, config
-
ure the system address as needed and make note of
the FlexStat MAC and Device Instance. If the system
is stand-alone, address the
FlexStat for MAC 20,
Device Instance 1000000
. (See Illustration 2.)
To set the FlexStat’s BACnet
Device Instance
(and
optionally name and location):
1. Select
ADVANCED
(enter password if needed)
and then
DEVICE
.
2.
Change (or confirm)
INSTANCE
to
1000000
.
DEVICE
INSTANCE:
NAME: ZEC_FlexStat_1
LOCATION: KMC Controls
1000000
To configure the
MAC address
, from the Main Menu,
select
ADVANCED
(enter password if needed) and
then
COMMUNICATIONS
.
COMMUNICATIONS
ACTIVE:
STATUS: ACTIVE
ETHERNET SETTINGS
IP SETTINGS
FOREIGN DEV SETTINGS
MS/TP SETTINGS
CONFIGURE
COMMUNICATIONS
ACTIVE:
STATUS: ACTIVE
MAC ADDRESS: 20
BAUD: 38400
AUTO-BAUD: OFF
MAX MASTER: 20
MS/TP
To set protocol and parameters for BACnet commu-
nications:
1. Select
ACTIVE: CONFIGURE
.
2. Select
MS/TP SETTINGS
.
3. Change
MAC ADDRESS
to
20
(if needed).
4. Change
MAX MASTER
to
20
(or other relevant
number depending on network).*
5. Select
ACTIVE: MS/TP
and restart the FlexStat.
*NOTE:
For a network of 16 SimplyVAV controllers,
setting the Max Master to 20 will make
the network more efficient and perform
faster. For network connections to larger
networks with other equipment, the MAC
address should be the same as the largest
MAC address in the network for maximum
performance.
NOTE: ACTIVE: CONFIGURE must FIRST BE
SELECTED before any of the values can be
changed!
Otherwise values are read only.
Setpoints
The home screen displays the DAT in large numbers
(instead of room temperature that FlexStats normally
display). To change the heating and cooling DAT
setpoints, under the Main Menu, select
SETPOINTS
.
