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

Model Number Descriptions
UV-SVN03F-EN 7
Digit 32 — Unit Depth
A = Standard (16-5/8 in.)
B = 21-1/4 in. Depth with Baffle
C = 21-1/4 in. Depth with Full Sheet
Metal Back and Baffle
D = 21-1/4 in. Depth with 25 in. High
Falseback
E = 21-1/4 in. Depth with 26 in. High
Falseback
F = 21-1/4 in. Depth with 27 in. High
Falseback
G = 21-1/4 in. Depth with 28 in. High
Falseback
H = 21-1/4 in. Depth with 29 in. High
Falseback
J = 21-1/4 in. Depth without Baffle
Note: Selection “J” should be applied if
OA opening is raised above
standard baffle location.
Digit 33 — End Covers
0=None
1 = 16-5/8 in. Depth without Cutouts
2 = 16-5/8 in. Depth with 3 x 7-1/4 in.
Cutout
4 = 21-1/4 in. Depth without Cutouts
5 = 21-1/4 in. Depth with 3 x 7-1/4 in.
Cutout
6 = 21-1/4 in. Depth with 3-1/4 in. x
16-7/8 in. Cutout
Digit 34 — Front Panel
1 = Standard Front Panel
2 = Heavy Gauge Front Panel
Digit 35 — Subbase
0=No Subbase
2 = 2 in. Subbase
4 = 4 in. Subbase
6 = 6 in. Subbase
Digit 36 — Piping Package
0=None
1 = Ball Valves & P/T Ports
2 = Ball Valve & Circuit-Setter with
P/T Ports
3 = Ball Valve, Circuit-Setter with
P/T Ports & Strainer
Digit 37 — Flow Control -
Cooling/Changeover Coil
0=None
Digit 38 — Flow Controls -
Heating Coil
0=None
Digit 39 — Auxiliary Drain Pan -
Piping
Y = Yes, Auxiliary Drain Pan
N = No Auxiliary Drain Pan
Digit 40 — Crossover Piping
0=None
1=Internal
2 = External 1-3/8 in. Crossover
Piping
3 = External 2-1/8 in. Crossover
Piping
Digit 41 — Filter
1 = Standard Throwaway Filter
2 = MERV 8 Filter
3 = MERV 13 Filter
Digit 42 — Color
1 = Deluxe Beige
2 = Cameo White
3=Soft Dove
4 = Stone Gray
5 = Driftwood Gray
UV-SVN03_.book Page 7 Thursday, January 24, 2013 5:27 PM