Installation and Maintenance Manual
Table Of Contents
- Warnings, Cautions and Notices
- Model Number Descriptions
- General Information
- ECM Application Notes
- Dimensions and Weights
- Receiving and Handling
- Pre-Installation
- Installation—Mechanical
- Installation—Piping
- Installation—Sensors
- Installation—Electrical
- ECM Overview and Setup
- Time Clock
- Wired Controllers—Communication Wiring
- Pre-Start
- Startup
- Tracer ZN520 Unit Startup
- Tracer UC400 Unit Startup
- General Information
- Fan Mode Switch Operation
- Tracer ZN520 Operation
- UC400 Controller Operation
- Tracer ZN520 Sequence of Operation
- UC400 Sequence of Operation
- Power-up Sequence (UC400)
- Random Start (UC400)
- Occupancy Modes (UC400)
- Timed Override Control (UC400)
- Zone Temperature Control (UC400)
- Discharge Air Tempering (UC400)
- Heating or Cooling Mode (UC400)
- Entering Water Temperature Sampling Function (UC400)
- Fan Operation (UC400)
- Exhaust Control (UC400)
- Valve Operation (UC400)
- Modulating Outdoor/Return Air Damper (UC400)
- Two-position Control Of A Modulating Outdoor Air Damper (UC400)
- Electric Heat Operation (UC400)
- Dehumidification Operation (UC400)
- Peer-to-peer Communication (UC400)
- Unit Protection Strategies (UC400)
- Maintenance
- Diagnostics
- Replacing ECM Components
Installation—Piping
28 UV-SVN03F-EN
4. Install body valve into pipe.
5. Wiring connections may be made either before or after
actuator installed on body.
6. Place the manual operating leve
r on the actuator in the
OPEN position.
7. Align actuator coupling to slot on the shaf
t of the valve
body and fit the head onto the valve body to ensure the
shaft seats correctly (see Figure 20, p. 27).
8. Press the actuator and valve body until it secures
together
.
Soldering Procedures
1. Remove actuator as stated earlier.
2. Place valves on the pipe. Rotate valve stem so the shaf
t
slot points at the notch in the side of the body (90° to
flow direction). This protects the plug inside the valve
by removing it from the seat (see Figure 23).
3. Sweat the joints, keeping outer surface free from
solder.
Note: Do not use silver solder due to high
temperature requirements.
Heating Coils with Direct Expansion
Cooling
Heating options for direct expansion cooling in the unit
ventilator are hot water, steam or electric heat.
These coils facilitate direct expansion cooling with
standard capacities. The supply and return connections
are located in the right-hand end pocket. Hot water field
connections are made with a 5/8 in. \[15.9\] OD male
sweated joint, while steam coils have a 1 in. \[25.4\] male
pipe thread (MPT) connection. Refer to Table 8, p. 24 for
coil connection sizes.
Electric heat coils provide a third way to supply heating to
the direct expansion cooling. The coil utilizes three to six
preheat elements which are factory-wired.
Figure 22. Installing isolation valve
WARNING
Electrocution and Fire Hazards with
Improperly Installed and Grounded Field
Wiring!
Improperly installed and grounded field wiring poses
FIRE & 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. All field wiring MUST
be performed by qualified personnel.
Failure to follow these requirements could result in
death or serious injury.
Figure 23. Preparation for soldering
UV-SVN03_.book Page 28 Thursday, January 24, 2013 5:27 PM