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TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . 9
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . 9
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . 11
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 11
Ductwork (when required) . . . . . . . . . . . . . . . . . . 12
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 13
Step 9 - Units with Hinged Panels Only . . . . . . . . 14
Step 11 - Make Electrical Connections . . . . . . . . . 15
Economi$er® X (Factory Option) . . . . . . . . . . . . . . . 32
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500242-01
Installation Instructions
Printed in U.S.A.
Form 50HCQ-4-6-02SI
Single Package Rooftop Heat Pump
with Puron
®
• ECONOMIZER MODULE WIRING DETAILS
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
RTU Open Control System . . . . . . . . . . . . . . . . . . . .44
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Step 12 - Adjust Factory-Installed Options . . . . . .44
Step 13 - Install Accessories . . . . . . . . . . . . . . . . .44
Step 14 - Check Belt Tension . . . . . . . . . . . . . . . . .45
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .45
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . .45
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the litera-
ture, tags and labels attached to the unit, and other safety precau-
tions that may apply.
Follow all safety codes, including ANSI (American National Stan-
dards Institute) Z223.1. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol
. When you see this symbol on the unit and in in-
structions or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
Pg 1
WeatherMaster
50HCQ*04-06
(R-410A) Refrigerant
12-19
Replaces: 50HCQ-4-6-01SI
®
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