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