ISO 9001
Certified Quality
Management System
CONTENTS
NOMENCLATURE. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 7
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
GAS HEATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
GAS FURNACE OPERATING INSTRUCTIONS. . . 64
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
See the following pages for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer
that personal injury and/or equipment damage may result if
installation procedure is not handled properly.
INSTALLATION MANUAL
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL

MILLENNIUMâ„¢ ROOFTOP

25, 30 & 40 TON

882108-YIM-B-1012

MODELS: Z42

Z33

Z34