TABLE OF CONTENTS
HRV/ERV MODEL REFERENCE
I. INTRODUCTION 3
II. GENERAL HRV/ERV TERMINOLOGY & FUNCTION 3
Denitions 3
How Heat & Energy Recovery Ventilators Work 3
Ventilating with HRV/ERVs 4
III. PRECAUTIONS & GUIDELINES 5
Ducting Congurations 6
Locating the Air Exchanger 11
Recirculation Using Fifth Ports (Optional) 11
Ducting Materials 11
Connecting the Ducts 11
Vent Hood Locations 12
Locating the Exhaust Air Grilles or Registers 13
Locating the Air Grilles of Diusers 13
Zone Register Terminals (ZRT
®
) 14
Humidity Control 14
IV. INSTALLATION 15
What’s Included 15
Mounting the Unit 16
Drain Connections (HRV Models) 17
Interlocking the HRV/ERV to an Air-Handler/Furnace Blower 18
Unit Wiring 18
Enabling Slave Mode 19
Using Slave Mode 21
Field Wiring 23
Electrical Interface 23
Installing the Digital Multifunction Controller (P/N 611242-FC) 23
Installing the Humidity Control (P/N 611224) 25
Installing the 20/40/60 Minute Timer (P/N 611228) 26
Installing the Speed Control (P/N 611229) or Mode Control (611230) 27
ZRT VentZone® Systems 28
V. MEASURING & BALANCING AIRFLOW 30
Measure and Balance 30
Door-Port Balancing 30
In-Duct Balancing 34
ZRT VentZone® Balancing 35
VI. MAINTENANCE 36
General Maintenance 37
Replacement Filters 38
Technical Assistance 38
Troubleshooting 39
VII. WARRANTY 42
What’s Included 42
How to File a Warranty Claim 42