Rheem RKNL-B073CL15E, Manual, Page: 65 / 80

Air
Mechanical Specifications
RKNL-B Series
65
23 81 19.13.G. Electrical Requirements
1. Main power supply voltage, phase, and frequency must match those required by the manufacturer.
23 81 19.13.H. Unit Cabinet
1. Unit cabinet shall be constructed of galvanized steel.
2. Unit cabinet exterior paint shall be: powder coat paint.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210 or 360 minimum exterior sweat
criteria. Interior surfaces shall be insulated with a minimum 3/4-in. thick, 1-1/2 lb density, flexible fiberglass insulation, foil
faced on the air side. Aluminum foil-faced fiberglass insulation shall be used in the gas heat compartment.
4. Base of unit shall have a location for thru-the-base gas and electrical connections standard.
5. Base Rail
a. Unit shall have base rails on a minimum of 4 sides.
b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.
c. Holes shall be provided in the base rail for moving the rooftop for fork truck.
d. Base rail shall be a minimum of 14 gauge thickness.
6. Condensate pan and connections:
a. Shall be a sloped condensate drain pan made of a non-corrosive material and be removable for cleaning.
b. Shall comply with ASHRAE Standard 62.
c. Shall use a 1" - 2 NPT drain connection, possible either through the bottom or side of the drain pan. Connection shall be
made per manufacturer’s recommendations.
d. Shall be able to be easily removed.
7. Top panel:
a. Shall be a single piece top panel over indoor section.
8. Gas Connections:
a. All gas piping connecting to unit gas valve shall enter the unit cabinet at a single location on side of unit (horizontal plane).
b. Thru-the-base capability
i. Standard unit shall have a thru-the-base gas-line location using a continuous raised, flange around opening in the
basepan.
ii. No basepan penetration, other than those authorized by the manufacturer, is permitted.
9. Electrical Connections
a. All unit power wiring shall enter unit cabinet a a single, factory-prepared, continuous raised flange opening in the basepan.
b. Thru-the-base capability
i. Standard unit shall have a thru-the-base electrical location(s) using a raised, continuous raised flange opening in the
basepan.
ii. No basepan penetration, other than those authorized by the manufacturer, is permitted.
10. Component access panels (standard)
a. Cabinet panels shall be easily opened for servicing.
b. Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and filters shall have hinges
with 1/4 turn fasteners.
c. 1/4 fasteners shall be permanently attached.
23 81 19.13.I. Gas Heat
1. General
a. Heat exchanger shall be an induced draft design. Positive pressure heat exchanger designs shall not be allowed.
b. Shall incorporate a direct-spark ignition system and redundant main gas valve.
c. Heat exchanger design shall allow combustion process condensate to gravity drain; maintenance to drain the gas heat
exchanger shall not be required.
d. Gas supply pressure at the inlet to the rooftop unit gas valve must match that required by the manufacturer.
2. The heat exchanger shall be controlled by an integrated furnace controller (IFC) microcompressor.
a. IFC board shall notify users of fault using and LED (light-emitting diode).
b. The Light Emitting Diode (LED) shall be visible without opening the control box access panel.