York DJ 180 warranty Factory-Installedoptions, Unit Cutaway

261660-YTG-C-0707

LOCATION OF VFD (Optional)

LOCATION OF VFD BYPASS (Optional)

FIGURE 1 - UNIT CUTAWAY

with aluminized steel or optional stainless steel tubes, a redundant gas valve, spark ignition, power venting, an ignition module for 100% shut-off and all of the safety controls required to meet the latest ANSI standards.

The gas supply piping can be routed into the heating compartment through a hole in the base pan of the unit or through a knockout in the piping panel on the front of the unit.

•Electric Heat Operation - All electric heat models (fac- tory installed only) are wired for a single power source and include a bank of nickel chromium elements mounted at the discharge of the supply air blower to pro- vide a high velocity and uniform distribution of air across the heating elements. Every element is fully protected against excessive current and temperature by fuses and two thermal limit switches.

The power supply wiring can be routed into the control box through a threaded pipe connection in the base pan of the unit or through a knockout in the wiring panel on the front of the unit.

•BAS Controls - York’s Magnum series units offer factory mounted BAS controls such as York® Simplicity® Intelli- Comfort™, Novar, Honeywell, Johnson, and CPC.

FACTORY-INSTALLED OPTIONS

•SINGLE INPUT ELECTRONIC ENTHALPY ECONO- MIZERS - Includes a slide-in /plug-in damper assembly with fully modulating spring-return motor actuator capa- ble of introducing up to 100% outdoor air with nominal 1% leakage type dampers.

The enthalpy system contains one sensor that monitors the outdoor air and determines when the air is cool enough and dry enough to provide free cooling.

The rainhood is painted to match the basic unit and must be field-assembled before installing.

•BAS-READY ECONOMIZER - Includes a slide-in / plug- in damper assembly with fully modulating spring-return motor actuator with zero to 95-degree rotation capable of introducing up to 100% outdoor air with nominal 1% leak- age type dampers.

Actuator requires 2-10 VDC input from an external source, such as a field-installed or factory-installed BAS controller. BAS-ready actuators have an adjustable auxil- iary end-switch for optional power exhaust control.

For units with optional VAV or Simplicity® Intelli-Com- fort™ control, a factory-installed, dry bulb sensor deter- mines if outdoor air temperature is low enough to provide free-cooling operation. (Field-installed humidity sensors for either outdoor air or outdoor & return air streams are available for single enthalpy and differential enthalpy configurations, respectively).

The rainhood is painted to match the basic unit and must be field-assembled before installing.

•POWER EXHAUST - Our single economizer options are available with power exhaust. Whenever the outdoor air intake dampers are opened for free cooling, the exhaust fan will be energized to prevent the conditioned space from being over-pressurized during economizer opera- tion. BAS-ready economizer actuators have an adjustable auxiliary end-switch to provide a range of damper positions available to energize power exhaust. For units with optional

Unitary Products Group 5