Brochure

Model LDAP
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Reznor
®
Model LDAP Series Packaged Downow Heaters are available in three sizes - 400 MBH, 800 MBH,
and 1200 MBH. Model LDAP 400 has one heat section; Model LDAP 800 has two heat sections; and Model
LDAP 1200 has three heat sections. All Model LDAP heaters are 83% thermal efcient for use with either
natural or propane gas.
Each heat section features the Reznor T
core
2
heat exchanger and single burner combustion system. Other
features include a single-stage gas valve, multi-try direct spark ignition with timed lockout, pressure switch
to verify venter ow, resiliently isolated venter motor, resiliently isolated axial fan and motor assembly, a high
temperature limit control, a destratication fan control, and a built-in disconnect switch. Operation is controlled
through an integrated circuit board. The circuit board monitors heater operation and has LED diagnostic indica-
tor lights to identify abnormalities in control functions.
Cabinet has four suspension points for hanging or may be wall mounted. Designed for ease of installation with
an external 24-volt terminal strip and gas line connection.
Model LDAP heaters are certied by the ETL Testing Agency for commercial and industrial installations in
United States and Canada.
● 83% Thermal efcient
● 55°F Temperature rise range
● Patented* combustion system
● Titanium stabilized aluminized steel heat exchanger(s)
● 208 or 230 Single phase supply voltage
● Open fan motor(s) with internal overload protection
● Transformer for 24-volt controls
● Integrated circuit board(s) with diagnostic indicator lights
● Multi-try direct ignition with timed lockout
● Single-stage natural gas valve (eld adjustable for operation to 10,000 ft / 3,045M elevation)
● Destratication adjustable fan control (air economizer)
● High temperature limit controls
● Vibration/noise isolated fan and venter motors
● 4-point Suspension
● Built-in disconnect switch
● External terminal strip for 24-volt wiring
● External gas connection
● Full fan guard(s)
● Ready for eld connection to Building Automation Systems
● Single-stage, propane gas valve (eld adjustable to 10,000 ft / 3045M elevation)
● Two-stage natural or propane gas valve - Size 400 only
● 409 Stainless steel heat exchanger(s)
● Manual Shutoff Valve
● Multiple Heater Control
● High Altitude Adjustment Kit (above 6,000 ft./1,830 M)
● 4-Way Louvers
● Multiple Position Discharge Nozzles
● Vent Cap
● 1” Pipe Coupling (Swivel) Hanger Kit
● Thermostats
DESCRIPTION
STANDARD FEATURES
OPTIONAL FEATURES -
FACTORY INSTALLED
OPTIONAL FEATURES -
FIELD INSTALLED
AllModelLDAPhighbaypackagedheatersaredesigncertiedby
ETLforuseinindustrialandcommercialinstallations.
Theseheatersmustbeinstalledinaccordancewithlocalbuild-
ingcodes.Intheabsenceoflocalcodes,intheUnitedStates,the
heatermustbeinstalledinaccordancewiththeNationalFuelGas
Code,ANSIZ223.1.ACanadianinstallationmustbeinaccordance
with the CSA B149 Installation Codes.
Model LDAP1200
* U.S. Patent No. 6,889,686
IndirectFired,Indoor,Downow,PackagedHeater
Form RZ-C-UH (Version H) Page 25
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