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—Electrical
44 UV-SVN03F-EN
Split System Start-Up
After all piping and wiring has been completed, follow the
instructions provided with the condensing unit for control
testing and system start-up. If sweat type field-piped
systems are being used, then pressure testing,
evacuation, and refrigerant charging will be required.
Two bulbs will also be shipped with a split system unit:
• Frost stat bulb
• TXV valve (used with R-410A)
Both components are to be field installed using the
installation kit shipped with the unit. For complete
installation instructions and locations, refer to the tag
attached to the coil. Refer to Figure 41, p. 44 for an
example of the installation tag.
Note: Depending on the controls package ordered with
the unit, not all installations will require mounting
the frost stat bulb.
Figure 41. Frost stat / TXV valve installation tag
IMPORTANT:
INSTALLER MUST MOUNT THERMAL
EXPANSION VALVE BULB AND FROST
PROTECTION BULB (if suppled) TO
SUCTION LINE AFTER CONNECTION
OF FIELD REFRIGERANT PIPING
X39001939010A
12
3
6
93:00
4:00
8:00
9:00
X
X
MOUNT BULB IN
HORIZONTAL PLANE
RECOMMENDED
BULB PLACEMENT
UV-SVN03_.book Page 44 Thursday, January 24, 2013 5:27 PM