Bryant Preferred Series

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Fig. 39 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 (581K*04-06F/K 208/230-3-60 Unit Shown)

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Table of Contents1
Safety Considerations2
Model Number Nomenclature and Dimensions3
Rated Indoor Airflow3
Installation8
Jobsite Survey8
Step 1 - Plan for Unit Location8
Roof Mount8
Step 2 - Plan for Sequence of Unit Installation8
Curb-Mounted Installation8
Pad-Mounted Installation8
Frame-Mounted Installation8
Step 3 - Inspect Unit8
Step 4 - Provide Unit Support8
Slab Mount (Horizontal Units Only)10
Alternate Unit Support10
Slab Mount)10
Step 5 - Field Fabricate Ductwork10
Step 6 - Rig and Place Unit10
Positioning on Curb10
Step 7 - Convert to Horizontal and Connect Ductwork11
(When Required)11
Step 8 - Install Outside Air Hood12
Economizer Hood Package Removal and Setup (Factory Option)12
Economizer Hood12
Step 9 - Units with Hinged Panels Only13
Step 10 - Install Flue Hood13
Step 11 - Install Gas Piping13
Factory Option Thru-Base Connections14
Step 12 - Install External Condensate Trap and Line16
Step 13 - Make Electrical Connections17
Field Power Supply17
Units with Factory-Installed Non-Fused Disconnect18
Units Without Factory-Installed Non-Fused Disconnect18
All Units18
Convenience Outlets19
Factory-Option Thru-Base Connections (Electrical Connections)20
Units Without Thru-Base Connections (Electrical Connections)20
Field Control Wiring21
Thermostat21
Heat Anticipator Settings21
Perfect Humidity™ System Control Connections21
Typical Unit Wiring Diagrams22
Integrated Gas Controller26
Economi$Er® X (Factory Option)29
System Components29
Specifications29
Inputs29
Outputs29
Environmental29
Economizer Module Wiring Details30
S-Bus Sensor Wiring30
Co2 Sensor Wiring31
Interface Overview31
Setup and Configuration32
Time-Out and Screensaver32
Enthalpy Settings38
Standard or Single Speed Fan Operation39
Speed Fan Operation39
2Sp H/C (2 Speed Heat/Cool) Fan Operation40
Speed Fan Operation (Single Phase Units Only)40
Checkout41
Troubleshooting41
RTU Open Controller (Factory Option)41
Controller Options41
Low Ambient41
Smoke Detectors41
Step 14 - Adjust Factory-Installed Options43
Smoke Detectors43
Economi$Er IV Occupancy Switch43
Step 15 - Install Accessories43
Step 16 - Fan Speed Set up43
Units with Electro-Mechanical Controls43

Bryant Preferred Series - Page 23

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