Options and Accessories

ManualsBrandsReznor ManualsHeating SuppliesPower Vented Gas Fired Unit Heater - 120,000 BTU

TheIndoorAirEconomizerFeature

onModelLDAPprovides“free”heat.

Here’s how it works...

Step 1: Wall mounted

thermostat calls for heat.

Step 2: Down discharge Model

LDAP directs heating to the

oor. As George Reznor used

to say, “Because we live on the

oor, not on the ceiling.”

Step 3: Thermostat setting is

reached, shutting off heater.

Heated air naturally rises.

Step 4: Instead of heat remain-

ing at the ceiling or escaping

through the roof, a monitor

(separate from the wall mounted

thermostat) on Model LDAP

senses the buildup of heat at

the ceiling. This monitor triggers

the fans at a slower speed to

destratify the air and send “free”

heat back to the oor.

Another benet of Model LDAP: Using the fan(s) in the summer can improve

working conditions by alleviating stagnant air conditions and creating a cooling

effect for the occupants.

Field-Supplied

Mounting Angles

(MUST be on all

four sides of the

heater.)

Wall

Suspending the Heater

Ceiling Suspension

WARNINGS:Checkthesupportingstructuretobeusedtoverifythat

ithassufcientloadcarryingcapacitytosupporttheweightofthe

heater.Suspend theheateronlyfromthethreadednutretainersor

withamanufacturerprovidedkit.DoNOTsuspendfromtheheater

cabinet.

See dimensional drawings for hanger locations, and install the ½”-13 spring

nuts in the strut that is attached to the top of the unit. Comply with the require-

ments shown below when using threaded rod. If ordered with swivel connectors

for 1” pipe, Option CK10, attach the swivels to the spring nuts according to

illustration shown below and suspend with 1” pipe.

Locate the hardware kit shipped with the heater. The kit contains spring nuts,

hex nuts, “U”-shape ttings, and lock washers for suspending the heater. It also

includes louvers and the compression springs needed to install them.

When the heater is lifted for suspension, support the bottom of the heater with

the crate bottom. If the bottom is not supported, damage could occur. After

hanging or mounting, verify that any screws used for holding shipping brackets

were reinstalled in the cabinet.

WARNING:Allheatersmustbelevelforproperoperation.Donotplace

or add additional weight to the suspended heater.

Wall Mounting

Guidelines for Wall Mounting Model LDAP Heaters

● Mounting is the responsibility of the installer. Verify that the supporting struc-

ture has sufcient load-carrying capacity to support the weight.

● Prior to installation, be sure that the method of support is in agreement with

all local building codes. Check for service platform requirements.

● Maintain a minimum of 2” (51mm) clearance from the discharge air open-

ings to structural supports. Additional clearance will be required if an optional

nozzle is to be eld installed.

● Determining the need for installing vibration or noise isolation is the respon-

sibility of the installer.

● To prevent potential movement, eld-supplied angles must be placed around

the perimeter of the heater to anchor it to the structural supports.

● Structural supports must be placed as shown to prevent damage to the

heater.

● All structural supports must be noncombustible materials.

Wall mounting - All structural supports and

angles are eld supplied.

Form RZ-C-UH (Version H) Page 38

Page Number _______ of ______

Summary of content (6 pages)

PAGE 1
The Indoor Air Economizer Feature on Model LDAP provides “free” heat. Here’s how it works... Page Number _______ of ______ Step 3: Thermostat setting is reached, shutting off heater. Heated air naturally rises. Step 1: Wall mounted thermostat calls for heat. Step 2: Down discharge Model LDAP directs heating to the floor. As George Reznor used to say, “Because we live on the floor, not on the ceiling.
PAGE 2
Page Number _______ of ______ Options and Accessories Apply to Unit Heater Models as Listed Stepdown Transformers - (Models F and B) Model 25 50 75 F (heater only) .25 .25 .25 F with Field-installed Optional Venter .25 .50 .50 B (heater only) .50 .50 1.0 B with Field-installed Optional Venter .50 .50 1.0 Unit Size 100 125-200 .50 .50 .50 .75 1.0 1.0 250 .50 .50 300 .50 .75 400 1.00 1.
PAGE 3
Options and Accessories (cont'd) Page Number _______ of ______ Apply to Unit Heater Models as Listed Optional Polytube Outlet Adapter - Apply to Model B Description The optional outlet nozzle is designed to allow the attachment of polytube-type air distribution for use in greenhouse and industrial buildings. Outlet on suspended heater may be either above, below, or directly in line with the heater discharge.
PAGE 4
Page Number _______ of ______ Optional Downturn Nozzles - Apply to Models UDAP, UDAS, UDBP, UDBS, UEAS, F and B Optional Downturn Nozzle with 25°-65° Range of Air Deflection • Optional Downturn Nozzle with 50°-90° Range of Air Deflection , IMPORTANT: On fan Models UDAP, UDAS, UEAS and F, do not use optional vertical louvers in combination with a nozzle with 50-90° range of air deflection.
PAGE 5
Model LDAP Discharge Air Options LOUVERS Page Number _______ of ______ Airflow direction depends on how the louvers are installed INSTALLING LOUVERS After the unit is suspended/mounted, install the air directional louvers or optional nozzle.
PAGE 6
Page Number _______ of ______ Reznor Separated Combustion Systems Following is an overall description of Separated Combustion Systems as it relates to Models UDAS and UDBS. For more specific separated combustion venting information, especially as it relates to Model UEAS, please see the appropriate installation manual. The manufacturer of Reznor heating equipment, for years, has pioneered in separated combustion system technology, eliminating “open flame” combustion problems.