Greenheck Fan 473501 Table of Contents, General Safety Information, Product Overview, Maintenance

Table of Contents

General Safety Information . . .	. . . . . . .	.1
Receiving, Handling and Storage .	. . . . . .	. 2
Product Overview	. . . . . . .	.4
Models and Capacities	. . . . . . .	.4
Subassemblies
Coils	. . . . . . .	.5
Dampers	. . . . . . .	.5
Energy Wheel	. . . . . . .	.5
Filters	. . . . . . . . . . . . .	. .5
Heat Pump Module	. . . . . . .	.6
Optional Electric Heaters. . . .	. . . . . . . .6
Optional Indirect Gas Furnace		6
Installation
Dimensional Data.. . . . . . . . . . . . . . 7
Unit Weights and Recommended Roof Opening . . 7
Service Clearances	. . . . . . . .8
Handling, Lifting and Lifting Lugs		. 9
Roof Curb Mounting, Dimensions, Weights . . . .10
Ductwork Connections . . . . . . . . . . . .11
Rail Mounting / Layout		11
Exhaust Weatherhood	. . . . . . .	11
Start-Up Unit	. . . . . . . 12
Pre-Start-Up Checklist		13
Start-Up Procedure	. . . . . . . 13
Voltage Imbalance. . . . . . . . . . . . . .13
Unit Start-Up Checklist	. . . . . .	.14
Electrical Information
General Electrical Information. .	. . . . . . .	15
Discharge Air Temp Sensor. . .	. . . . . . .	16
Plumbing/Piping Overview
Condensate Drain Trap	. . . . . . .16
Optional Remote Control Panel and
Wiring Schematics	. . . . . . .	17
Typical Control Center Components		18
Electrical Controls
Optional Frost Control	. . . . . . . 19
Optional Economizer. . . . . . . . . . . . .20
Phase Monitor	. . . . . . .	20
Variable Frequency Drive. . . .	. . . . . . . 20
Optional Rotation Sensor		21
Dirty Filter Sensor	. . . . . .	.21

Energy Wheel

Start-Up. . . . . . . . . . . . . . . . . .22

Sequence of Operation				.	.	.22
Maintenance		. . . . . .	. .			23
Troubleshooting. . . . . . . . . . . . . . .24
Heat Pump Overview
Heat Pump Components. .			. . . . . . .	.	.	24
Heat Pump Controls				.	.	.25
Refrigeration Schematic. . . .			. . . . . . .			26
Typical Operating Conditions			. . . . . . . . .			26
Unit Protection Module Fault Indicators . . .				.	.	27
Troubleshooting
Controller Alarms. . . . . . . . . . . . . . 28
Airflow . . . . . . . . . . . . . . . . . . 29
Unit			.			30
Refrigeration Circuit.		. . . . . . . . . .		. 31-35
Maintenance
Monthly, Semianually, Annually				.	.	.36
Heat Pump.	. . . . . . . . . . . . .			.	.	.36
Maintenance Procedures
Lubrication.	. . . . . . . . . . . . .			.	.	.36
Dampers. .	. . . . . . . . . . . . .		. .			36
Fan Belts . . . . . . . . . . . . . . . . 36-37
Fan Motors	. . . . . . . . . . . . . . . .					37
Fan Wheel and Fasteners				.	.	.37
Fan Bearings . . . . . . . . . . . . . . . .37
Internal Filter Maintenance				.	.	38
External Filter Maintenance				.	.	38
Coil Maintenance. .		. . . . . . . . . .		.	.	38
Maintenance Log. . . .		. . . . . . . . . .				39
Warranty. .	. . . .	. . .	. . . . . . Backcover

Model ERCH-HP Energy Recovery Unit 3