Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53350006-01 Printed in U.S.A. Form No. 35E-5SI Pg 1 9-24 Replaces: 35E-4SI
Installation and Start-Up Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• STORAGE AND HANDLING
• INITIAL INSPECTION
• UNIT IDENTIFICATION
• INSTALLATION PRECAUTION
• SERVICE ACCESS
• CODES
• UNIT SUSPENSION
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
CONTROL ARRANGEMENTS . . . . . . . . . . . . . . . . . . . 3
VAV Control Arrangements . . . . . . . . . . . . . . . . . . . . 3
VVT Control Arrangement . . . . . . . . . . . . . . . . . . . . . 3
Analog Electronic Control Arrangement . . . . . . . . . 4
Pneumatic Control Arrangement . . . . . . . . . . . . . . . . 4
• PNEUMATIC CONTROL LEGEND
Direct Digital Electronic Control Arrangements (Field-
Supplied) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• NO CONTROL
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 1 — Install Volume Control Box . . . . . . . . . . . . 4
Step 2 — Make Duct Connections . . . . . . . . . . . . . . . 4
Step 3 — Install Sensors and Make Field Wiring
Connections — Electric Analog or DDC (Direct
Digital Controls) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CONTROL SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Set Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Field Adjustment of Minimum and Maximum
Airflow Set Points . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• MAGNIFICATION FACTOR
•K-FACTOR
System Calibration of the Linear Averaging Flow
Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PNEUMATIC CONTROLS . . . . . . . . . . . . . . . . . . . . . 11
Preparation for Balancing (Control Sequences 1102
and 1103) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Balancing Procedure
(Control Sequences 1102 and 1103) . . . . . . . . . . 12
• DIRECT ACTING THERMOSTAT, NORMALLY OPEN
DAMPER (CONTROL SEQUENCE 1102)
• REVERSE ACTING THERMOSTAT, NORMALLY
CLOSED DAMPER (CONTROL SEQUENCE 1103)
Balancing Procedure
(Control Sequences 1104-1110) . . . . . . . . . . . . . 12
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . 14
Pneumatic Control Troubleshooting . . . . . . . . . . . . 14
ANALOG CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . 15
Balancing Procedures (Control Sequences 2100-
2105) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Thermostat Installation . . . . . . . . . . . . . . . . . . . . . . .15
Programming Thermostat . . . . . . . . . . . . . . . . . . . . .15
Analog Control Troubleshooting . . . . . . . . . . . . . . .17
• CONTROLLER
• WRONG ROTATION DIRECTION OR STROKE RANGE
• NO PRESSURE OUTPUT SIGNAL FROM
INLET SENSOR
• WIRING ISSUES
PROPORTIONAL (SSR) ELECTRIC HEAT START-UP,
OPERATION AND SERVICE . . . . . . . . . . . . . . . . .18
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
• INPUT SETTING
•WIRING
Troubleshooting Proportional SSR Heat . . . . . . . . .26
• PROBLEM: NO HEAT WHEN CALLED FOR
• PROBLEM: DISCHARGE TEMPERATURE NOT AT
TEMPERATURE SETTING
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol . When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
CAUTION
PERSONAL INJURY HAZARD
Air-handling equipment will provide safe and reliable service
when operated within design specifications. The equipment
should be operated and serviced only by authorized personnel
who have a thorough knowledge of system operation, safety
devices and emergency procedures.
Good judgment should be used in applying any manufacturer’s
instructions to avoid injury to personnel or damage to
equipment and property.
35E Single-Duct Terminal Units
Variable Volume System
