20
4. Check that the static pressure available at each box is
above the minimum required, force all dampers to control
to the minimum cooling cfm and verify that the static
pressure is below the maximum safe operating limits
when the damper is providing minimum cooling airflow.
5. Set air source supply fan speed and duct static pressure
regulator to obtain satisfactory static pressure at design
airflow.
6. While at peak system load, check system operation and
pressures.
7. Check duct pressure at various points in the system. If sys-
tem static pressure probe has been properly located, pres-
sure at last units of all branch headers should remain essen-
tially the same. If pressure has changed considerably, re-
check the supply air static pressure controller or relocate
the probe to better sense system pressure changes.
8. Remove all forces and balance each control box zone
using through the balancing procedure described on
page 11.
9. Check that each heating coil is fully operational and that
proper airflow is maintained during heating.
It is important to maintain sufficient airflow to units with
electric heating elements. Supply-air temperature should NOT
EXCEED 105 F in any stage of heating operation. Check the
system to make sure that it does not cycle on and off during
heating.
CCN System Start-Up —
The
Building
Supervisor,
ComfortWORKS®, and the Network Service Tool can aid in
system start-up and troubleshooting.
All set-up and set point configurations are factory set and
field adjustable. Changes are made by using either Building
Supervisor, ComfortWORKS or the Network Service Tool.
The Network Service Tool can be used as a portable device to
change system set-up and set points from a zone sensor or ter-
minal control module. During start-up, the Building Supervisor
or the Network Service Tool can also be used to verify commu-
nication with each controller.
For specific operating instructions, refer to the appropriate
user manual. See Table 11 for troubleshooting information.
ComfortID™ TEST AND BALANCE TOOL SOFT-
WARE — The ComfortID Test and Balance Tool software is
used for testing each controller if the Network Service Tool or
CCN are not available. The ComfortID Test and Balance Tool
is compatible with Windows95 and higher and Windows NT4
(with Service Pack Level 3 or better) operating systems.
This software is used for control calibration. It allows for
various functions that expedite system checks and testing.
Carrier requires the use of the B&B485CARLP9A Port
Powered RS232 to RS485 Converter for proper operation.
NOTE: The B&B485CARLP9A Port Powered RS232 to
RS485 is available through:
B&B Electronics
1500 Boyce Memorial Drive
P.O. Box 1040
Ottawa, IL 61350
Refer to the ComfortID Test and Balance Tool Software
Installation and Operation Instructions (Carrier publication no.
533-360) for additional information.
HF23BJ042
Made in Switzerland
by Belimo Automation
LR 92800
NEMA 2
Class 2 Supply
LISTED
94D5
TENP IND &
REG. EQUIP.
24VAC/DC
50/60 Hz
3VA 2W
5K
WIP
yel
blu
ora
blk
red
wht
COM
1
2
3
35 in-lb (4 Nm)
80...110s
0
1
J4
RH/IAQ
GND
SECFLOW
+10V
DMPPOS
GND
TEST
GND
+24V
SPT
GND
SAT
T56
GND
PAT
N/A
J3
J1
SR
VC
24V
AC
+
G
-
HIGH
Part Number: 33ZCFANTRM
S/N:
Bus#:
Element#:
Unit#:
J6
CCW
COM
CW
HEA
T1
24V
AC
HEA
T2
ZONE Controller
®
®
C
US
LOW
1
6
3
1
+
G
-
J2A
CCN
LEN
J2B
+
G
-
1
1
1
3
3
2
15
16
FAN AC
FAN
24VAC
N/A
HEAT3
J7
J6
1
1
2
3
CW
COM
CCW
J8
SEC
DMP
1
3
CCN
COMMUNICATION
CONNECTOR
RED (+)
WHITE (GND)
BLACK (–)
CCN
Fig. 27 — CCN Terminations at Zone Controller
