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Revision: LDAP-IOM (01-22) 207733-A

DOWNFLOW UNIT HEATER
INSTALLATION/OPERATION/MAINTENANCE

Supersedes: I-LDAP (01-19) PN207733R11

MODEL LDAP

⚠ DANGER ⚠

FIRE OR EXPLOSION HAZARD

• Failure to follow safety warnings exactly could result in serious injury, death, or property

damage.

• Improper installation, adjustment, alteration, service, or maintenance can cause serious injury,

death, or property damage.

• Installation and service must be performed by a qualified installer, service agency, or the gas

supplier.

• Be sure to read and understand the installation, operation, and service instructions in this

manual.

• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or

any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Leave the building immediately.

• Immediately call your gas supplier from a phone remote from the building. Follow the gas

supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

Содержание LDAP

Страница 1: ...ncy or the gas supplier Be sure to read and understand the installation operation and service instructions in this manual Do not store or use gasoline or other flammable vapors and liquids in the vici...

Страница 2: ...Connections 17 Venting Requirements 18 Vent Pipe Type 19 Vent Pipe Size 19 Vent System Sealing 19 Condensation Mitigation 21 Vent System Support Requirements 21 Vent Terminal Type of Pipe and Vent Cap...

Страница 3: ...Module 46 INSTALLATION RECORD TO BE COMPLETED BY INSTALLER 48 GENERAL INFORMATION This unit heater has been tested for capacity and efficiency so as to provide many years of safe and dependable comfo...

Страница 4: ...shutting off the electrical supply Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and replace any gas control that...

Страница 5: ...n Standard for Aircraft Hangars in public garages in accordance with ANSI NFPA No 88A latest edition Standard for Parking Structures orinrepairgaragesinaccordancewithANSI NFPANo 88B latestedition Stan...

Страница 6: ...Weights CombustionAirRequirements Acoustical Considerations and Venting Connections Heater Throw Figure 2 shows throw patterns for all unit sizes in heat mode at high speed Table 2 lists throw distanc...

Страница 7: ...g zone as possible and this fact should be kept in mind when determining the mounting heights to be used However care should be exercised to avoid directing the discharged air directly on the room occ...

Страница 8: ...View Front View Right Side View 17 1 8 435mm 30 762mm 14 7 8 378mm 9 1 8 232mm 15 1 4 384mm 34 3 8 873mm Hanger Location 1 2 13 Female Thread 28 1 8 714mm Air Destratification Fan Control 7 8 22mm 2...

Страница 9: ...4 7 8 378mm 28 1 8 714mm Air Destratification FanControl 43 1 2 1105mm 46 1166mm 1 5 8 41mm 12 305mm 9 7 8 251mm 5 127mm 2 5 8 67mm 13 1 8 333mm 38 965mm 53 1346mm 13 3 4 349mm 1 1 4 32mm Line Voltage...

Страница 10: ...pporting structure to be used has sufficient load carrying capacity to support the weight refer to Table 4 of the unit Table 4 Unit Weights Unit Size Pounds kg 400 375 170 800 805 365 1200 1195 542 Fi...

Страница 11: ...tion within the equipment room or space Requirements for combustion air and ventilation air depend upon whether the unit is located in a confined or unconfined space A confined space is defined as a s...

Страница 12: ...1 02 meters2 0 34 0 68 1 02 Outlet velocity heat high speed fpm 1521 m minute 464 Air volume destratification medium speed cfm 4650 9300 13 950 m3 minute 132 263 395 Outlet velocity destratification m...

Страница 13: ...ents check with the local gas company or any other local agencies who might have requirements concerning this installation Before beginning make preparations for necessary supplies tools and manpower...

Страница 14: ...e installer Verify that the supporting structure has sufficient load carrying capacity to support the weight refer to Weights section Prior to installation ensure that the method of support is in agre...

Страница 15: ...p or plug the supply line Test pressures below 1 2 psi before testing close the manual valve on the heater GAS CONVERSION Gas conversion kits are available for changing from propane to natural gas or...

Страница 16: ...specific gravity for natural gas at 1 050 BTU per cubic feet and a 1 6 specific gravity for propane at 2 550 BTU per cubic feet If the gas at the installation does not meet this specification consult...

Страница 17: ...listed in Table 8 Table 8 Gas Connection Sizes Unit Size Natural Gas Propane Connection Inches 400 1 1 800 1200 1 1 4 1 1 4 Connection size for a standard unit not gas supply line size Figure 9 Gas Co...

Страница 18: ...on of ECCO Heating Products Ltd SGDW series 3 6 ICC Industrial Chimney Co VIC 4 24 Industrial Combustion LLC ICH ICHL ICHLA ICHL1 and ICHL2 4 48 Jeremias Inc DWKL SWKL DWFL and SWFL 4 36 DWGV double w...

Страница 19: ...75 of equivalent length of vent run is vertical double wall Type B vent pipe Vent Pipe Size Use only one diameter of vent pipe on an installation The minimum vent length is 3 feet 1 meter A minimum of...

Страница 20: ...t using 3 4 inch long sheet metal screw Do not overtighten screw STEP 5 Before sealant can dry insert collar on vent cap as far as possible inside inner wall of double wall pipe Apply silicone sealant...

Страница 21: ...t in severe personal injury or death and or property damage Consider local snow depth conditions The vent must be at least 6 inches 152 mm above the anticipated snow depth WARNING A different style ve...

Страница 22: ...ters Forced air inlet within 10 feet 3 1 meters 3 0 9 above Combustion air inlet of another appliance 6 1 8 Mechanical air supply inlet to any building Canada 6 1 8 Any building opening door window or...

Страница 23: ...ate on the heater for the supply voltage and current requirements A dedicated line voltage supply with a disconnect switch should be run directly from the main electrical panel to the heater All exter...

Страница 24: ...ly wiring enters above and connects directly to the disconnect switch Figure 13 Built In Disconnect Switch Circuit Board Wiring The circuit board see Figure 14 is located in the control compartment of...

Страница 25: ...scharge Air Connections NOTES After the unit is suspended mounted install the air directional louvers or optional nozzle Each option package includes illustrated installation instructions All Model LD...

Страница 26: ...t Section Flue Wrapper Burner Orifice Burner Assembly Optional Relay Figure 15 Component Locations Typical Pressure Switches DANGER Safe operation of this unit requires proper venting flow NEVER bypas...

Страница 27: ...2 35 to 1 85 1 50 to 0 95 0 60 0 78 Light blue Flue Collection Box Section Pressure Switch Unit Size Elevation Feet Meters Negative Pressure IN WC Label Color Startup Cold Equilibrium Hot Setpoint OFF...

Страница 28: ...standard transformer in the control heater and a relay assembly that connects to the non control heater Option CL31 provides for control of two heaters If control of additional heaters is desired opt...

Страница 29: ...OFF knob will not turn by hand do not try to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion Should overheating occur or the gas supply contr...

Страница 30: ...l for gas including near floor a If you smell gas STOP and follow steps in DANGER message listed above or on heater operating label b If you do not smell gas proceed to step 6 6 Turn gas control knob...

Страница 31: ...ized indefinitely as long as call for heat remains and either pressure switch is open Pressure switch s proven closed Control begins prepurge Flame is present at any time during prepurge Prepurge is r...

Страница 32: ...motor on heat speed Limit switches re close or call for heat is not present Control runs venter motors through post purge period Control runs fan motor on heat speed through selected delay OFF period...

Страница 33: ...lockout as long as fault remains Hard lockout automatically resets when hardware fault clears Power interruption Momentary interruption or voltage level is below minimum operating voltage line voltag...

Страница 34: ...e regulated only by manufacturer provided equipment NEVER RESTRICT OR OTHERWISE ALTER THE SUPPLY OF COMBUSTION AIR TO ANY HEATER Heaters installed in a confined space must be supplied with air for com...

Страница 35: ...e 800 has two gas valves and unit size 1200 has three gas valves Adjust both all gas valves on unit sizes 800 and 1200 For natural gas when the heater leaves the factory the combination gas valve is s...

Страница 36: ...Feet 610 Meters Continued Figure 18 Gas Valves CAUTION DO NOT bottom out the gas valve regulator screw This can result in excessive overfire and heat exchanger failure due to unregulated manifold pre...

Страница 37: ...ge low fire valve a Disconnect wire from HI terminal on gas valve b Remove cap from low fire regulator screw see Figure 18 and adjust pressure in accordance with Table 17 by turning regulator screw IN...

Страница 38: ...000 265 600 240 000 640 000 531 200 320 000 960 000 796 800 320 000 ADJUSTMENTS CONTINUED Measure and Adjust Manifold Outlet Gas Pressure Continued Measure and Adjust Manifold Gas Pressure Elevation 2...

Страница 39: ...appear sound Check for any damaged wiring and replace as necessary Maintenance Procedures Burner Maintenance NOTE Each heat section is equipped with a TCORE2 burner Visually inspect each burner assemb...

Страница 40: ...r visible light Repeat for each heat exchanger section c If any light is observed replace heat exchanger 5 Re install burner assembly a Attach burner assembly 1 While holding venturi tube slide entire...

Страница 41: ...see Figure 15 for location disconnect the wire and remove the screw and the flame sensor Clean flame sensor with an emery cloth before reinstalling Proper operation of the direct spark ignition syste...

Страница 42: ...combination gas valve is the prime safety shutoff All gas supply lines must be free of dirt or scale before connecting to the unit to ensure positive closure NOTE Each heat section is equipped with a...

Страница 43: ...ted on control panel 4 While holding venter motor remove six screws that secure venter motor mounting plate to venter housing Remove motor and wheel assembly from heater 5 Reassemble with replacement...

Страница 44: ...heater For limit control locations see Figure 15 Figure 22 Replaceable Components Transformer Maintenance Use a voltmeter to verify 24V output from the transformer see Figure 22 If the transformer is...

Страница 45: ...eliminated replace board 5 Lockout device interrupting control circuit by above causes Reset lockout by interrupting control at thermostat or main power 6 Heat section pressure switch es not closing...

Страница 46: ...indicate normal operation and various abnormal conditions refer to Table 20 If the heater fails to operate properly check the LEDs to determine the cause and or to eliminate certain causes See Figure...

Страница 47: ...place flame sesnsor Reposition flame sensor Is gas flowing Is the ignitor position correct in the gas flow Check gas pressure and supply voltage If either are low correct and repeat startup Reposition...

Страница 48: ..._____________ Date of Installation ____________ Specific installation notes i e location amps gas pressure temperature voltage adjustments warranty etc ________________________________________________...

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