With 3-DTMScroll Compressors
Models
Later Design Sequence
 Literature Change History
Overview of Manual
 Table of Contents
 General Information
Model Number Description
 Digit 3 Unit Airflow
 Fiberglass Wool
Hazard Identification
General Information Commonly Used Acronyms
Unit Description
 General Information
Supply AIR
 Ventilation Control Module VCM Design special option only
CFM
 Lead-Lag
 Constant Volume CV Units
 Variable Air Volume VAV Units
Unit Component Layout and Shipwith Locations
 General Information Space Temperature Averaging
 Control Module Locations for SHF 40, 60, 70 & 75 Ton Units
 Table of Contents
 Unit Dimensions & Weight Information
No Step Surface
Unit Inspection As soon as the unit arrives at the job site
Storage
Page
 Sahf Cooling-Only Units 20 thru 75 Ton
 Installation
Unit Dimensional Data Dimensions Size
Unit Base Dimensional Data Dimensions
Electrical Entrance Data Unit Dimensions
 SEHF, SFHF, SLHF, SSHF, Sxhf Units 20 thru 75 Ton
 Unit Base Dimensional Data Dimensions Size
Unit Dimensions Size
Electrical Entrance Data Unit Dimensions Size
Unit Size Furnace Dimensions Note Size/MBH Length Height
 SHG Cooling & Heating Units 90 through 130 Ton
 Sahf
Sehf
Slhf
Sshf
 Sahf Sshf Sfhf Sxhf Sehg Sfhg Sxhg HF/G
Roof Curb and Ductwork
SE,SL
 Installation Unit Rigging & Placement
If a Trane Curb Accessory Kit is not used
Heavy Objects
Pitch Pocket Location
 Typical Unit Rigging Unit Base & Roof Curb Section
 Main Electrical Power Requirements
Installation Field Installed Control Wiring
General Unit Requirements
Requirements for Electric Heat Units
 Installation
 Condensate Drain Connections
Page
 Removing Supply and Exhaust Fan Shipping Channels Motors 5Hp
Page
 Installation Sensor & Tubing Installation
Units with StatitracTM
 Gas Heat Units SFH
Connecting the Gas Supply Line to the Furnace Gas Train
Hazardous Gases and Flammable Vapors
 350 MBH 850 MBH
 Flue Assembly Installation
Flue Assembly
1000 MBH Modulating 500 MBH 1000 MBH
Hot Water Heat Units SLH
 Steam Heat Units SSH
SSHG-90
 Through 130 Ton units
Page
 Use Copper Conductors Only
Hazardous Voltage
Live Electrical Components
 Typical Field Power Wiring 20 thru 75 Ton
Page
 Supply Fan Motor FLA ea Horsepower
Condenser Fans Total FLA
Exhaust Fan Motor
FLA
 Unit Tonnage No. of Compressors Tonnage Type Designation
Combustion
Blower Motor Sfhf Only
 Single Source Power 380V, 415V, 460V,
Load Definitions Load
= Current of the Largest Motor Compressor or FAN Motor
On the Next
 Power Wire Sizing and Protection Device Equations
Disconnect Switch Sizing DSS
Dual Source Power units 200V
MCA = 1.25 x Load MOP = 1.25 x Load
 Constant Volume System Controls
Controls using 24 VAC
Installation Controls using DC Analog Input/Outputs
 Variable Air Volume System Controls
Constant Volume or Variable Air Volume System Controls
 Pressurize
Depressurize
 Purge
Fire
 Refer to Wiring Notes on
16A
 16B
Page
 17A
 17B
 VAV Setpoint
Input Voltage
 Table of Contents
 Cooling Sequence of Operation
Sequence of Operation
 Gas Heating Sequence of Operation
Fenwal Ignition System
Unit Start-Up
Propane Gas
 Full and Limited Modulating Gas Furnace
Modulating Gas Sequence of Operation
Flame Failure
 Freeze Protection
Electric Heat Sequence of Operation
Unit Start-Up Wet Heat Sequence of Operation
 Electrical Phasing
Unit Power
Compressor Damage
 Voltage Imbalance
Voltage Supply and Voltage Imbalance
Voltage Supply
 Service Test Guide for Component Operation
IGV
 Supply FAN
 System Airflow Measurements Constant Volume Systems
Rotating Components
Verifying Proper Fan Rotation
If all of the fans are rotating backwards
 Condenser Fan Location with Human Interface Designator
 Variable Air Volume Systems
 Exhaust Airflow Measurement
TraqTM Sensor Airflow Measurement
Optional with all Units
Optional with all units equipped with an economizer
 20 & 25 Ton Supply Fan Performance without Inlet Guide Vanes
Ton Supply Fan Performance without Inlet Guide Vanes
 Wocfm 1200 RPM 40 HP 40%
 300 RP
 Standard Evaporator Coil
 20000 30000 40000 50000 60000
 Drop
 20 & 25 Ton Supply Fan Performance with Inlet Guide Vanes
Ton Supply Fan Performance with Inlet Guide Vanes
 15 HP 900 RPM 80% 10 HP
 RPM
 Through 75 Ton Component Static Pressure Drops Inches W.C
AIR
 CFM RPM BHP
STD
AIR
 HF-C20 000
HF-C25 000
10,000
HF-C30 000
 RPM BHP BHP RPM BHP RPM BHP
AIR RPM BHP
 Economizer Damper Adjustment
To Adjust the Fresh Air Damper Travel
Exhaust Air Dampers
Fresh Air & Return Air Damper Operation
 Damper Travel Adjustment Position
Connecting Rod Crank Arm Hole
Configuration
Ton Units
 Fresh Air & Return Air Linkage Adjustment
Compressor Start-Up
All Systems
70 & 105 Ton
 Compressor Operational Sounds
Refrigerant Charging
At Shutdown
At Low Ambient Start-Up
 Compressor Locations
 Cooling Cycle Pressure Curve
 340 320
 Full Load
 380 360 340 OD Ambient
 Full Load
 380 360 340 OD Ambient 320
 240 220
 380 360 OD Ambient
 Low Ambient Dampers
Thermostatic Expansion Valves
Charging by Subcooling
 Electric, Steam and Hot Water Start-Up
Gas Furnace Start-Up
 High-Fire Adjustment
Combustion Air Adjustment O2
Low-Fire Adjustment 500 MBH, 850 & 1,000 MBH only
Two Stage Gas Furnace
 CO2 Pressure
MBH
Firing Manifold
 Unit control
Full Modulating Gas Furnace
Heat Exchanger
 Modulating Gas Regulator Legend
Limited Modulating Gas Furnace Unit Start-Up
Modulating Gas Regulator
 Unit Start-Up Final Unit Checkout
Typical Gas Furnace
 Service & Maintenance
 Service & Maintenance
Unit Internal Fuse Replacement Data & VFD Factory Settings
 Unit Model Box-type Note Qty
Qty Size of each
Wet Heat Coil Fin Data Total Coil Fins
Model Type
 Service & Maintenance
 Fan Belt Adjustment
 Gripbelts Gripnotch Cross Small P.D Section Range Min Max
Scroll Compressor Replacement
Suction Line Filter/Drier Installation
 Supply and Exhaust Fan VFD Programming Parameters
Hazardous Voltage! w/Capacitors
VFD Programming Parameters
 Cooling Season
Service & Maintenance Monthly Maintenance
Filters
 Coil Cleaning
Heating Season
 Steam or Hot Water Coils
Coil Cleaners
Contains Refrigerant
 Final Process
 Index
 See Figure Gate type valve 36-37 See -12 Figure
 See VOM Contacts -16 Figure
 Warranty and Liability Clause
Equipment Damage From Ultraviolet UV Lights
 115
 116