The Direct Gas Fired Make-Up Air package is designed to deliver tempered make-up air for installations requiring frequent air changes. This unit is with a BTU of 86,400 and are for indoor or outdoor installation.
A unique feature is the self-adjusting burner profile plates allowing 2-speed and variable-air-volume applications. The plates ensure proper air velocity and pressure drop across the burner for clean combustion. Spring-loaded profile plates react to the momentum of the fresh air stream, and therefore, no motors or actuators are needed to drive them, nor do they need to be manually set to a specific position.
Sloped Filtered Intake Includes 2" MV EZ Kleen Metal Mesh Filters.
Gas Manifold - BTU 0 - 825001 - 7 in. w.c. - 14 in. w.c., ANSI Insurance Requirement
Down Discharge Construction for Size 2 Direct Drive AHUs
Low Fire Start.Burner to energize when the modulation control is in a low fire position.
Motorized Back Draft Damper Low Leakage, LF120S Actuator Included
VAV (Variable-Air-Volume) Wiring Package for Commercial Fans.
Manual Speed Control Variable Frequency Drive Included
ESV112N02YXB571 - Variable Frequency Drive - 1-1/2 HP Max., 200/240 V, Single or Three Phase Input, 6.0 A Max., NEMA 1 Enclosure, VFD Factory installed with Line reactor
Freezestat factory set at 35°F and 10 minutes.
Commercial Smoke Detector Interlock (Detector By Others)
0-150°F Discharge Temp Control • Field Wired On/Off Start Command • Heating Activation Based On Intake Set Point. Use with MUA
Profile Plate Configuration for size 2 Direct Fired Unit for low cfm applications.
2500 CFM Curb CRB31X79X16INS Insulated On Fan #4 Flat Curb
Full Bottom Curb Corner. Base flange corners fully welded or staked by factory.
Standard features include an intermittent spark ignition system with timed safety lockout and redundant gas valves. Units consist of a galvanized enclosure with an elevated gas burner which burns directly in the air stream. The burner consists of non-clogging, stainless steel combustion baffles attached to an aluminum gas supply section. The burner is capable of nearly 100% efficiency with a maximum turndown ratio of 30 to 1. The products of combustion mix with the make-up air which is introduced into the heater intake directly from outside the building. The burner module has a standard horizontal inlet and discharge duct connection and is located upstream of the blower module. The blower module has a standard horizontal inlet designed to accommodate an outside air inlet hood with standard 2" filters and screen.
To satisfy a variety of installation requirements, packages are available in a number of configurations which include additions of either a v-bank or an evaporative cooler intake module. All modules bolt together to form a rigid common base structure that mounts onto a single curb structure.
NOTE: Once order is placed, these units CANNOT be cancelled or returned
Rupp Air Modular Direct Gas Fired Make Up Air Unit, Heated, 2,500 CFM, w/ 20" Fan - R2D.250-20D -2500
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