Sterling RT - Manual (Page 2)

2
TABLE OF CONTENTS
I. RECEIVING
Pre-Installation Instructions ......................................... 2
II. GENERAL REQUIREMENTS .............................. 3-5
Rigging ......................................................................... 4
Combustion Air Considerations .................................... 4
Location ........................................................................ 5
Mounting/Locations ...................................................... 5
III. INSTALLATION
Installation Clearances ................................................. 6
Mounting on Field Furnished Supports ........................ 6
Mounting on Roof Curb .................................... 6, 7, 8, 9
Access Panel Removal ................................................. 6
Venting ........................................................................ 10
Duct Connections ....................................................... 10
Gas Piping ............................................................. 10-11
Modulating Gas Control .............................................. 11
Electrical Connections ........................................... 11-13
DX Coil Equipped Units .............................................. 13
Chilled Water Coil Equipped Units .............................. 13
Evaporative Cooling Equipped Units .......................... 13
IV. OPERATION
General Information .................................................... 14
Gas Control System ................................................... 14
Optional Gas Controls ........................................... 14-15
Air Handling Requirements and Adjustments ........ 15-16
Lighting ....................................................................... 16
Gas Input Adjustment ............................................ 16-17
Pilot Adjustment .......................................................... 17
Primary Air Shutter Adjustment .................................. 17
Controls ...................................................................... 17
V. START UP ....................................................... 17-18
VI. MAINTENANCE .............................................. 18-20
VII. TROUBLESHOOTING ................................... 21-26
VIII. REPLACEMENT PARTS ................................... 26
IX. SERVICE NOTE ................................................... 26
X. WARRANTY .......................................................... 26
XI. UNIT/SHIP WEIGHTS ..................................... 27-29
XII. CENTER OF GRAVITY .................................. 30-32
XIII. UNIT NUMBER DESCRIPTION ......................... 33
XIV. START UP SHEET ............................................. 35
Unless otherwise specifi ed, the following conversions
may be used for calculating SI unit measurements:
1 foot = 0.305 m
1 inch = 25.4 mm
1 psig = 6.894 kPa
1 pound = 0.435 kg
1 gallon = 3.785 L
1 cubic foot = 0.028 m
3
1 inch water column =0.249 kPa
1000 Btu per hour = 0.293 kW
1000 Btu/Cu. Ft. = 37.5 MJ/m
3
liter/second = CFM x 0.472
meter/second = FPM ÷ 196.8
The following terms are used throughout this manual to
bring attention to the presence of potential hazards or to
important information concerning the product:
Indicates an imminently hazardous
situation which, if not avoided, will result in death,
serious injury or substantial property damage.
Indicates an imminently hazard-
ous situation which, if not avoided, could result
in death, serious injury or substantial property
damage.
Indicates an imminently hazardous
situation which, if not avoided, may result in minor
injury or property damage.
NOTICE: Used to notify of special instructions on
installation, operation or maintenance which are
important to equipment but not related to personal
injury hazards.
I. RECEIVING INSTRUCTIONS
Inspect shipment immediately when received to
determine if any damage has occurred to the crate
during shipment.
After the unit has been uncrated, check for any visible
damage to the unit. Check motor position and turn blower
wheel to determine if damage has occurred to these
critical parts.
If any damage is found, the cosignee should sign the bill
of lading indicating such damage and immediately fi le
claim for damage with transportation company.
PRE-INSTALLATION INSTRUCTIONS
When the unit is received and uncrated, check the external
data plate and all labels on the unit for type of gas,
electrical, and operational specifi cations to confi rm that
these agree with those at point of installation. If the unit
is equipped with an Outdoor Duct Furnace, also check
the data plate and all labels located inside each furnace.
Every rooftop unit will include an informational
packet which will include the following: The blower
manual, outdoor duct furnace and evaporative
cooler/cooling coil manuals (if applicable to the
unit order), wiring diagram(s), factory installed-
service convenience options manual (if applicable
to unit order) and special controls/data sheets.
NOTICE: It is the owner’s responsibility to provide any
scaffolding or other apparatus required to perform
emergency service or annual/periodic maintenance
to this equipment.