Johnson Controls MAHP18B21S - Air Handler; Introduction

PMGB0406B rev.1
5
1. Introduction
Ɣ For details on wiring between the indoor unit and the outdoor unit, refer to the installation documentation for
the outdoor unit.
Ɣ For details on the optional controller, refer to the installation documentation for that product.
Provide this manual and the warranty to all installers and users. Ask end users to maintain copies for future
reference.
This manual is for this Air Handler and the DX Kit.
Read this "Installation and Maintenance Manual" carefully before installing this product. Read through the
applicable product documentation for other units in the system as well.
For installation of this Air Handler and DX-Kit, start with the air handler unit as described in the ¿ rst sec-
tions of this document. Then, proceed to install the DX-Kit as described in the later part of this document.
The single piece air handler series provides the À exibility for installation in any position. You may use this
unit for upÀ ow, downÀ ow, horizontal right, or horizontal left applications. Locate these units in a closet,
utility room, attic, crawl space, or basement. Use these versatile models for cooling or heat pump opera-
tion with or without electric heat.
Top or side power and control wiring, color-coded leads for control wiring, easy to install drain connec-
tions, and electric heaters all combine to make installation easy and minimize installation cost.
Electric heat kits are available as ¿ eld installed accessories. Single phase kits are available from 2.5 kW to
25 kW. 208-230 volt 3-phase kits are available from 10kW to 25kW.
2. Safety
Signal Words
Indicates a hazardous situation that, if not avoided, could result in death or
serious injury.
Indicates a hazardous situation that, if not avoided, could result in minor or
moderate injury.
Indicates information considered important, but not hazard-related (for
example, messages relating to property damage).
This is a safety alert symbol. When you see this symbol on labels or in manuals, be alert to the
potential for personal injury.
To reduce the risk of serious injury or death, read these instructions
thoroughly and follow all warnings or cautions included in all manuals that
accompanied the product and are attached to the unit. Refer back to these
safety instructions as needed
General Precautions
Air Handler
(Ins)DX-Kit4e-rev1.inddC-5
(Ins)DX-Kit4e-rev1.inddC-5
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2016/11/2515:32:12