Factory Options, Accessories & Economizers

Commercial Accessory Review

Serial Number Review The first two characters of the serial number are necessary when ordering LP kits.

Model Number Review

RKNL-C series are DDC or Communicating Units

Factory Option Codes

Field Installed Accessory Selection

Impact of Energy Issues on Economizers Economizers Yesterday Save money by utilizing free outside air instead of mechanical equipment Provide ventilation with demand control ventilation No direct feedback of operation or fault detection Controllers today More complex control requirements for additional energy savings Simplified diagnostics and verifiable operation Traceable operation and maintenance Meet CA title 24, ASHRAE and ICC codes and standards 64% Installed Rooftop Economizers Do Not Work!

Economizers Normal Operation

Economizers Economizer Operation

Economizers Horizontal Downflow Downflow Configurations Only Fully Modulating – Allow 100% outside air Horizontal Downflow Shipped As Single Enthalpy Factory Installation Available Downflow Configurations Only Cost is the Same No Additional Cost for Installation Longer Lead Time Plug – n – Play Large Units Small Units Field Configured RRNL, RRPL, RRRL, etc.

Economizers

Smoke Detectors Economizers Smoke Detector Factory Installed only in Economizer D4120 in Rheem Replacement Parts If Field installing, Need Sampling Tube RSI 60-SMK-01WH

Economizers Dual Enthalpy Separate Item Field Installed Smoke Detector Installed Option Not Field Installed

Backward Compatibility  Forward to Meet New Standards

W7220 Economizer Interface Terminal Options

W7220 JADETM Economizer Controller Information: STATUS SETPOINTS SYSTEM SETUP ADVANCED SETUP CHECKOUT ALARMS 2 LINE LCD 16 CHARACTERS/LINE MENU UP (EXIT) BUTTON SCROLL(UP/DOWN) BUTTONS SELECT (ENTER) BUTTON

Economizer System Sensors New Accurate Sensors

New Economizer Sensors 3 position DIP switch C7250A 20k temperature sensors C7400S Sylkbus Two sensors – color coded to match label on module

Economizers CO2 Sensor Molex Plugs 9 Pin to 12 Pin Adapters Separate Item Field Installed Wall Mounted Duct Mounted Available Ordered from Honeywell Molex Plugs 9 Pin to 12 Pin Adapters

Power Exhaust Field Installed Most Applications with RA Duct Static Greater Than 0.2” w.c. Only For Use With Economizers Notes: Economizers include Barometric Relief damper, which is installed. Dampers have rubber seals that minimize air leakage in off cycle, but also attenuate damper blade noise. Barometric Relief Damper

Fresh Air Dampers Low Cost Alternative to Economizers Manual Damper – allows 50% outside air Fixed Blade Motorized Damper – allows 50% air Open During Occupied Mode Some Are Complete Kits Some Are Motor Added to Manual Damper Not For Use With Economizers or Power Exhaust Downflow or Horizontal Applications

Roof Curbs RXKG-CAE14 14” Height RXKG-CAE24 24” Height Factory Sloped Curbs Residential Heat Pumps Not For Sloped Roof 3rd Party for Sloped Applications Curb Adaptors – Listed in Spec Sheets For Previous Generation Rheem/Ruud Only Other Adaptors Available From Third Party Vendors

Hail Guards Standard 12 ½ Ton “Designed Out” on Large Units Slope Coil Design No Longer Necessary Optional 10 Ton and below

Heat Exchangers Aluminized Steel 10 Year Warranty Stainless Steel Optional Good Value 20 Year Warranty Commercial Application Three Phase Lifetime Residential Application Single Phase

Other Accessories High & Low Pressure Control Standard Unwired Convenience Outlet Optional on All Units Requires Separate Power Source Unfused Service Disconnect Gas/Electric Only Not Available for Heat Pumps or Package A/C

Sources for Coating Coils Other Accessories Sources for Coating Coils AERO-MARINE Engineering 1-800-874-4543 OR AME. T. Dennis Sutherland ---- Bryson, Texas – Technicoat. Thermo Guard located in Houston TX – 713-690-9100. BLYGOLD HVAC Corrosion Protection – FL. Contact – Bill Herrera at 561-809-9783 Prostock Parts in North Carolina also carries part number 85-7916 in a spray can for coating coils for salt air protection. All correspondence is between the Distributor and Coil Coater. Not the Factory.

Application Notes Ruud products are designed for human comfort and can be used for other conditioning needs Units are not designed as “make-up air” units or for hostile environments Hot Gas Reheat and VFD Currently Available

Additional Notes When installing a package unit on a roof curb remove shipping material from under the unit Prior to start-up remove shipping blocks from under the compressor. Failure to do so may result in transmitted noise Economizer sheet metal hoods and screens are shipped inside the unit for protection. Some parts have subtle differences. Identify all parts prior to assembly Electric Heater kits for Package Heat Pumps and Package Cooling units are not the same kits that are used in residential air handlers

Additional Notes KEEP THE ECONOMIZER PLUG This is a must for diagnostic procedures in the future All Accessory Model Numbers begin with RX (Green) / AX (Gray) For example, RXRD = AXRD except the color Residential Package Economizers are the same for Horizontal or Vertical installation When Installing an Economizer/Hoods Two scratch awls come in mighty handy Layout everything before starting

Questions?