Installation Guide
VariTrac™ Dampers
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
September 2010 |
VAV-SVN04B-EN |
Warnings, Cautions and Notices
Warnings, Cautions and Notices. Note that warnings, cautions and notices appear at appropriate intervals throughout this manual. Warnings are provided to alert installing contractors to potential hazards that could result in personal injury or death. Cautions are designed to alert personnel to hazardous situations that could result in personal injury, while notices indicate a situation that could result in equipment or property-damage-only accidents.
Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.
ATTENTION: Warnings, Cautions and Notices appear at appropriate sections throughout this literature. Read these carefully.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.
NOTICE: Indicates a situation that could result in equipment or property-damage-only accidents.
WARNING
Personal Protective Equipment (PPE) Required!
Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards.
•Before installing/servicing this unit, technicians MUST put on all Personal Protective Equipment (PPE) recommended for the work being undertaken. ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE.
•When working with or around hazardous chemicals, ALWAYS refer to appropriate MSDS and OSHA guidelines for information on allowable personal exposure levels, proper respiratory protection and handling recommendations.
•If there is a risk of arc or flash, technicians MUST put on all Personal Protective Equipment (PPE) in accordance with NFPA70E or other country-specific requirements for arc/flash protection PRIOR to servicing the unit.
Failure to follow recommendations could result in death or serious injury.
WARNING
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/ state electrical codes. Failure to follow codes could result in death or serious injury.
© 2010 Trane All rights reserved |
VAV-SVN04B-EN |
Warnings, Cautions and Notices
Overview of Manual
Note: At least one copy of this document ships with every order and is customer property. It must be retained by the unit's maintenance personnel.
This booklet describes proper installation procedures for delivered air systems. By carefully reviewing the information within this manual and following the instructions, the risk of improper operation and/or component damage will be minimized. It is important that periodic maintenance be performed to help assure trouble free operation. Should equipment failure occur, contact a qualified service organization with qualified, experienced HVAC technicians to properly diagnose and repair this equipment.
General
These instructions do not cover all variations in systems nor provide for every possible contingency that may arise at a job site installation.
Inspection
Check carefully for any shipping damage. This must be reported to and claims made against the transportation company immediately. Any missing parts should be reported to your supplier at once and replaced with authorized parts only.
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Table of Contents
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Damper Descriptions & Actuator Specifications . . . . . . . . . . . . . . . . . . . . . . . . 5 Round Dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 1. Round bypass dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 2. Round zone dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Rectangular Bypass Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3. Rectangular bypass dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Rectangular Zone Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 4. Rectangular zone dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Actuator Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Install Bypass Dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bypass Damper Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 1. Bypass damper installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installing the Communicating Sensor/Bypass Control . . . . . . . . . . . . . . . . . . . 8
Figure 2. Installing the communicating sensor/bypass control . . . . . . . . . . . . . 8
Connect the Communicating Sensor/Bypass Control Wiring . . . . . . . . . . . . . 9
Install the VariTrac Dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3. Proper damper mounting positions. . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 4. VariTrac damper installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connect UCM Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 5. DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. Typical VariTrac Zone/Changeover Wiring Diagram. . . . . . . . . . . . . 13
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VAV-SVN04B-EN |
General
Damper Descriptions & Actuator Specifications
Round Dampers
Cylinder: 18-gage galvanized–rolled and seam welded
Damper: Two 22-gage galvanized steel plates locked together with an elastomeric gasket sandwiched between.
Actuator: Internal actuator w/synchronous motor and gear reduction is direct coupled to the damper shaft. It has a drive time of 60 seconds.
•Electrical Rating:
•Power Supply—24 VAC (20 to 30 VAC) at 50/60 Hz
•Transformer Sizing—2.0 VA maximum at nominal voltage, Class 2
Table 1. Round bypass dampers
Size Diameter (in.) |
Length (in.) |
Shipping Weight |
|
|
|
6 |
17 |
17 lbs |
|
|
|
8 |
17 |
19 lbs |
|
|
|
10 |
17 |
20 lbs |
|
|
|
12 |
17 |
21 lbs |
|
|
|
14 |
17 |
23 lbs |
|
|
|
16 |
17 |
25 lbs |
|
|
|
Table 2. Round zone dampers
Size Diameter (in.) |
Length (in.) |
Shipping Weight |
|
|
|
6 |
17 |
19 lbs |
|
|
|
8 |
17 |
21 lbs |
|
|
|
10 |
17 |
22 lbs |
|
|
|
12 |
17 |
23 lbs |
|
|
|
14 |
17 |
25 lbs |
|
|
|
16 |
17 |
27 lbs |
|
|
|
Rectangular Bypass Damper
Sheet Metal Box: 22-gage galvanized steel
Length: 16"
Damper Frame: 18-gage galvanized steel
Damper Blades: 18-gage galvanized steel
Damper Shaft: 1/2" Diam.
Table 3. Rectangular bypass dampers
Size W" x H" |
No. of Blades |
Shipping Weight |
|
|
|
14 x 12 |
3 |
16 lbs |
|
|
|
16 x 16 |
4 |
21 lbs |
|
|
|
20 x 20 |
4 |
29 lbs |
|
|
|
30 x 20 |
4 |
40 lbs |
|
|
|
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