Greenheck PVe (472846) - Manual (Page 3)

3 Model PVe Heat Recovery Unit
Product Overview
The unit brings in fresh outdoor air and removes stale
exhaust air from the building. Prior to discharging the
exhaust air, the plate heat exchanger transfers energy
from the exhaust air to the incoming outdoor air. When
used in the cooling mode, heat energy is transferred
from incoming outdoor air to the exhaust air. Simply
put, this unit preconditions the outdoor air to save
money on heating and cooling costs.
RETURN DUCT
OUTDOOR R R R
AIR
SUPPLY DUCT
SIDE VIEW
Table of Contents
Product Overview . . . . . . . . . . . . . 3
Installation
Unit Dimensions and Weights . . . . . . . . 4
Access Panel Description and Locations . . . 4
Service Clearances . . . . . . . . . . . . 5
Handling . . . . . . . . . . . . . . . . . 5
Lifting . . . . . . . . . . . . . . . . . . 5
Roof Curb Mounting . . . . . . . . . . . . 6
Curb Outside Dimensions and Weights . . . . 6
Rail Mounting/Layout . . . . . . . . . . . 7
Ductwork Connections . . . . . . . . . . . 7
Electrical Installation
General Electrical Information . . . . . . . . 8
Field-Provided Disconnect . . . . . . . . . 9
Discharge Air Temperature Sensor . . . . . . 9
Control Center Components . . . . . . . . . 9
Optional Accessory Wiring Schematics . . . . 10
Piping Installation
Condensate Drain Trap . . . . . . . . . . . 11
Unit Overview . . . . . . . . . . . . . . . 11
Optional Component Overview
Economizer . . . . . . . . . . . . . . . 12
Frost Control . . . . . . . . . . . . . . . 12
Variable Frequency Drives . . . . . . . . . 12
CO
2
Sensor . . . . . . . . . . . . . . . 12
Dirty Filter Sensor . . . . . . . . . . . . . 12
Service Outlet . . . . . . . . . . . . . . 12
Vapor Tight Lights . . . . . . . . . . . . . 12
Unit Start-Up
General . . . . . . . . . . . . . . . . . 13
Special Tools Required . . . . . . . . . . . 13
Start-Up Procedure . . . . . . . . . . . . 13
Voltage Imbalance . . . . . . . . . . . . . 13
Pre Start-Up Checklist . . . . . . . . . . . 13
Start-Up Checklist . . . . . . . . . . . . . 14
Optional Accessories Checklist . . . . . . . 14
Start-Up Components
Fans . . . . . . . . . . . . . . . . . . 15
Vibrations . . . . . . . . . . . . . . . . 16
Optional Start-Up Components
Dirty Filter Switch . . . . . . . . . . . . . 16
Frost Control . . . . . . . . . . . . . . . 16
Variable Frequency Drives . . . . . . . . 17-18
Routine Maintenance Checklist
Overview. . . . . . . . . . . . . . . . . 19
General . . . . . . . . . . . . . . . . . 19
Procedures. . . . . . . . . . . . . . 20-21
Parts List . . . . . . . . . . . . . . . . . 21
Troubleshooting
Airflow. . . . . . . . . . . . . . . . . . 22
Unit . . . . . . . . . . . . . . . . . . . 23
Maintenance Log . . . . . . . . . Backcover
Our Commitment . . . . . . . . . Backcover