Carrier 33ZCVAVTRM User manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 533-358 Printed in U.S.A. Form 33ZC-3SI Pg 1 10-99 Replaces: New
Book 1 4
Tab 11a 13a
Mounting Instructions
Part Numbers 33ZCVAVTRM, 33ZCFANTRM, 33ZCSECTRM
GENERAL
The VAV Fan Terminal Zone Controller (33ZCFANTRM)
provides dedicated control functions for series fan or parallel
fan powered terminals, single duct terminals with 3 stages of
heat, or as a primary controller for dual duct or zone pressure
control applications. The VAV Fan Terminal zone controller is
part of the Carrier ComfortID System.
The Single Duct Air Terminal Zone Controller
(33ZCVAVTRM) provides dedicated control functions for sin-
gle duct terminals with modulating heat or up to 2 stages of
heat. The single duct air terminal zone controller is part of the
Carrier ComfortID system.
With the addition of a secondary terminal and the
33ZCSECTRM secondary terminal zone controller accessory,
either dual duct or zone pressurization applications can be sup-
ported. This accessory is only used with the 33ZCFANTRM
controller.
TOOLS REQUIRED
•1/4-in. nut driver
• 8-mm wrench or socket
• No. 1 Phillips head screwdriver
INSTALLATION
Location — The zone controller must be mounted on the
air terminal’s damper actuator shaft. For service access, there
should be at least 12 in. of clearance between the front of the
zone controller and adjacent surfaces.
Mounting — Perform the following steps to mount the
zone controller:
1. Visually inspect the damper and determine the direc-
tion in which the damper shaft moves to open the
damper — clockwise (CW) or counterclockwise
(CCW).
If the damper rotates CCW to open, it does not require
any configuration changes.
If the damper rotates CW to open, then the damper
actuator logic must be reversed. This is done in the
software when performing system start-up and damper
calibration test. Do not attempt to change damper rota-
tion by changing wiring. This will upset the damper
position feedback potentiometer readings.
2. Rotate the damper shaft to the fully closed position.
3. Press the release button on the actuator and rotate the
clamp in the same direction that was required to close
the damper in Step 2.
4. Press the actuator release button and rotate the actuator
back one-position of graduation. Release the button
and lock the actuator in this position.
5. Mount the control to the terminal by sliding the
damper shaft through the actuator clamp assembly.
Secure the control by installing the screw provided
through the grommet in the anti-rotation tab. Be sure
the floating grommet is in the center of the slot. FAIL-
URE TO CENTER THE GROMMET MAY CAUSE
THE ACTUATOR TO STICK OR BIND.
6. Tighten the actuator clamp assembly to the damper
shaft. Secure by tightening the two 8-mm nuts.
7. If the damper has less than 90 degrees of travel
between the fully open and fully closed positions, then
a mechanical stop must be set on the actuator. The
mechanical stop prevents the damper from opening
past the maximum damper position. To set the
mechanical stop, perform the following procedure:
a. Press the actuator release button and rotate the
damper to the fully open position.
b. Using a No. 1 Phillips screwdriver, loosen the
appropriate stop clamp screw and move the stop
clamp so that it contacts the edge of the cam on
the actuator.
c. Secure the stop clamp in this position by tighten-
ing the screw.
8. Verify that the damper opens and closes. Press the
actuator release button and rotate the damper. Verify
that the damper does not rotate past the fully open
position. Release the button and lock the damper in the
fully open position.
9. Remove the cover from the zone controller. Install
two lengths of field-supplied 1/4-in. pneumatic tubing
(rated for the application) from the pressure transducer
to the velocity pressure pick-up tubes. Be careful to
avoid sharp bends in the tubing, because malfunctions
may occur if the tubing is bent too sharply. For best
operation, use at least 2 ft of tubing. Connect high side
to the P1 port of the airflow transducer. Replace cover.
IMPORTANT: This document contains zone con-
troller mounting information only. Refer to the
Installation, Start-Up, and Configuration manual for
zone controller wiring and tubing installation. Refer
to the Installation, Start-Up, and Configuration
manual for configuration procedures.
Single Duct Air Terminal Zone Controller
VAV Fan Terminal Zone Controller
Secondary Terminal Zone Controller

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 533-358 Printed in U.S.A. Form 33ZC-3SI Pg 2 901 10-99 Replaces: New
Book 1 4
Ta b 1 1 a 1 3 a
Copyright 1999 Carrier Corporation
NOTE: A filter is not provided for the airflow trans-
ducer. For typical control retrofit applications where
the existing ductwork is left intact, a filter is not
required. However, it is recommended that for installa-
tions on new systems or systems where high degrees of
impurity exist (for example: new construction, jobs
where the existing ductwork has been disturbed, or
systems where high relative humidity is present in the
supply plenum), an air filter should be purchased and
installed in the pneumatic piping between the high-
pressure pickup and the transducer. A suitable filter
(paper type, with a 5 micron rating) is available from
Carrier RCD. The filter part number is KH10MZ001.
10. For further instructions regarding sensors, options, and
start-up, configuration, and troubleshooting of the con-
troller, refer to the Installation, Start-Up, and Configu-
ration Instructions available from a local Carrier
representative.
®
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
123
35 in-lb (4 Nm)
80...110s
0
1
J4
J2A CCN
+
G
-
-
G
+
LEN
J2B
J3
J1
SERVICE
24VAC
+
G
-
HIGH
Part Number: 33ZCVAVTRM
S/N:
Bus#:
Element#:
Unit#:
J5
CCW COM CW HEAT1 24VAC HEAT2
ZONE Controller
Comfort System
®
®
LOW
MECHANICAL
STOP
ACTUATOR CLAMP
ASSEMBLY
DAMPER SHAFT LOW PRESSURE
TUBING ROUTING
ACTUATOR
RELEASE
BUTTON
HIGH PRESSURE
TUBING ROUTING
GROMMET
ANTI
ROTATION
TAB
RH/IAQ
GND
SECFLOW
+10V
DMPPOS
GND
N/A
GND
+24V
SPT
GND
SAT
T56
GND
PAT
REMOTE
→Fig. 1 —Zone Controller Details
(33ZCVAVTRM Shown)
→