Installation, Start-Up, and
Service Instructions
CONTENTS
Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION | |||
Step 1 | — Provide Unit Support | . . . 1 | |
• | ROOF CURB |
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• | SLAB MOUNT |
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Step 2 | — Field Fabricate Ductwork | . . . 2 | |
Step 3 | — Install External Trap for Condensate |
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| Drain | . . . 2 | |
Step 4 | — Rig and Place Unit | . . . 2 |
•POSITIONING
Step 5 | — Install Flue Hood | 4 |
Step 6 | — Install Gas Piping | 4 |
Step 7 | — Make Electrical Connections | 8 |
•FIELD POWER SUPPLY
•FIELD CONTROL WIRING
•HEAT ANTICIPATOR SETTINGS
Step 8 — Make Outdoor-Air Adjustments
and Install
•MANUAL
•OPTIONAL DURABLADE ECONOMIZER
•OPTIONAL ECONOMI$ER
Step 9 — Adjust | 19 | |
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Disconnect gas piping from unit when leak testing at pressure greater than 1/2 psig. Pressures greater than 1/2 psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pres- sure greater than 1/2 psig, it must be replaced before use. When pressure testing
Before performing service or maintenance operations on unit, turn off main power switch to unit and install a lock- out tag. Electrical shock could cause personal injury.
INSTALLATION
Unit is shipped in the vertical duct configuration. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers. Using the same screws, in- stall covers on vertical duct openings with the
Confirm before installation of unit that voltage, amperage and circuit protection requirements listed on unit data plate agree with power supply provided.
SAFETY CONSIDERATIONS
Installation and servicing of
Untrained personnel can perform basic maintenance func- tions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.
Step 1 — Provide Unit Support
ROOF CURB — Assemble and install accessory roof curb in accordance with instructions shipped with curb. See Fig. 2. In- stall insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb, not to the unit. The accessory
If electric and control wiring is to be routed through the basepan, attach the accessory
IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 2. Improperly applied gasket can result in air leaks and poor unit performance.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book | 1 | 4 | PC 111 | Catalog No. | Printed in U.S.A. | Form | Pg 1 | Replaces: New | |
Tab | 1a | 6a |
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