Johnson Controls J15 warranty Factory-Installedoptions, Unit Cutaway

349687-JTG-A-1007

UNIT

FIGURE 1 - UNIT CUTAWAY

with aluminized steel or optional stainless steel tubes, a	ble of introducing up to 100% outdoor air with nominal
redundant gas valve, spark ignition, power venting, an	1% leakage type dampers.
ignition module for 100% shut-off and all of the safety	The enthalpy system contains one sensor that monitors
controls required to meet the latest ANSI standards.
	the outdoor air and determines when the air is cool
The gas supply piping can be routed into the heating
	enough and dry enough to provide free cooling.
compartment through a hole in the base pan of the unit	The rainhood is painted to match the basic unit and must
or through a knockout in the piping panel on the front of
	be field-assembled before installing.
the unit.
• Electric Heat Operation - All electric heat models (fac-	• BAS-READY ECONOMIZER - Includes a slide-in / plug-
	in damper assembly with fully modulating spring-return
tory installed only) are wired for a single power source
	motor actuator with zero to 95-degree rotation capable of
and include a bank of nickel chromium elements
	introducing up to 100% outdoor air with nominal 1% leak-
mounted at the discharge of the supply air blower to pro-
	age type dampers.
vide a high velocity and uniform distribution of air across
the heating elements. Every element is fully protected	Actuator requires 2-10 VDC input from an external
against excessive current and temperature by fuses and	source, such as a field-installed or factory-installed BAS
two thermal limit switches.	controller. BAS-ready actuators have an adjustable auxil-
The power supply wiring can be routed into the control	iary end-switch for optional power exhaust control.
box through a threaded pipe connection in the base pan	For units with optional VAV control, a factory-installed,
of the unit or through a knockout in the wiring panel on	dry bulb sensor determines if outdoor air temperature is
the front of the unit.	low enough to provide free-cooling operation. (Field-
FACTORY-INSTALLED OPTIONS	installed humidity sensors for either outdoor air or out-
	door & return air streams are available for single
• SINGLE INPUT ELECTRONIC ENTHALPY ECONO-	enthalpy and differential enthalpy configurations, respec-
	tively).
MIZERS - Includes a slide-in / plug-in damper assembly
with fully modulating spring-return motor actuator capa-	The rainhood is painted to match the basic unit and must
	be field-assembled before installing.

Johnson Controls Unitary Products 5