Johnson Controls CVM03050, Installation Manual

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Materials and special tools needed
• Small, straight-blade (1/8 in. or 3.2mm) or Phillips #2
screwdriver for securing wires in the terminal blocks
• 8 mm (5/16 in.) wrench or 10 mm (3/8 in.) 12-point
socket to tighten the square coupler bolt
• Several shims or washers to mount the CVM
• Power screwdriver, 100 mm (4 in.) extension socket,
punch, drill, and 3.5 mm (9/64 in.) drill bits to mount the
CVM
• Pliers to open and close the damper
• Required length of 3.97 mm (5/32 in.) ID pneumatic
tubing and barbed fittings
Physical features
The following figure displays the physical features of
CVM03050, and the accompanying table provides a
description of the physical features and a reference to
further information where required.
Figure 1: CVM03050 physical features
Table 1: CVM03050 physical features
Physical features: description and references
1
Supply Power Terminal Block: Gray terminals. See
Supply power terminal block .
2
Device Address Rotary Switches: decimal addressing.
See Setting the device address .
3
Binary Output (BO) Terminal Block: Black terminals.See
Table 5.
4
Configurable Outputs (CO) Terminal Block: Black
terminals. See Table 5.
5 Dual Port Fitting.
6 Manual Override Button. See Mounting .
7 Coupler Bolt
8 Controller Coupler. See Mounting .
9
Universal Serial Bus (USB) 2.0 Host Type A Port
Note: The USB feature is not currently supported.
10
Universal Inputs (UI) Terminal Block: White terminals.
See Table 5.
Table 1: CVM03050 physical features
Physical features: description and references
11
Sensor Actuator (SA) Bus Terminal Block: Orange
terminal. See SA bus terminal block .
12
Field Controller (FC) Bus Terminal Block: Blue terminal;
may also be used for N2 connections, see FC bus
terminal block (or N2 protocol as required) .
13
EOL (End-of-Line) Switch. See Setting the End-of-Line
(EOL) switch .
14
SA Bus Port: RJ-12 6-Pin Modular Jack. See Modular
ports .
15
FC Bus Port: RJ-12 6-Pin Modular Jack. See Modular
ports .
16 Captive Spacer and Screw.
17 LED Status Indicators. See LED Table .
Mounting
Observe the following guidelines when mounting a CVM
controller:
• Ensure that the mounting surface can support the CVM
and any user-supplied enclosure.
• Mount the CVM on a hard, even surface whenever
possible.
• Use shims or washers to mount the CVM securely and
evenly on the mounting surface.
• Mount the CVM in an area free of corrosive vapors
that matches the ambient conditions specified in the
Technical specifications section.
• Provide sufficient space around the CVM for cable and
wire connections and adequate ventilation through the
controller (at least 50 mm [2 in.] on the top, bottom,
sides, and front of the controllers).
• Do not mount the CVM in areas where electromagnetic
emissions from other devices or wiring can interfere
with controller communication.
• Avoid mounting the CVM on surfaces with excessive
vibration.
Important: When the air supply to the VAV box is
below 10°C (50°F), make sure that any condensation
on the VAV box, particularly on the damper shaft,
does not enter the CVM electronics. Mount the
CVM vertically above the damper shaft to allow any
shaft condensation to fall away from the controller.
Additional measures may be required in some
installations.
On panel or enclosure mount applications, observe these
additional guidelines:
• Do not install the CVM in an airtight enclosure.
• Mount the CVM so that the enclosure walls do not
obstruct cover removal or ventilation through the
controller.
• Mount the CVM so that the power transformer and
other devices do not radiate excessive heat to the
controller.
M4-CVM VAV Box Controllers Installation Guide 2