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  Hastings Industries Inc.   Direct Gas Heating  

Direct Gas Heating Systems - Page 17

   

Direct Gas Heating

LU SERIES SELECTION TABLE

Model Air Delivery
--
SCFM		 Outlet Velocity
--
FPM		 Approx. Shipping Weight
Lbs.		            MBH Input      Motor Horsepower
Air Temperature Rise-Degree F Total Static Pressure (Refer to Notes Below)
50 60 70 80 90 100 110 120 3/4" 1" 1-1/4" 1-1/2" 1-3/4"
LU - 112 2000 1369 545 117 141 164 188 211 235 258 282 1/2 3/4 1 1 1-1/2
3000 2083 550 176 211 247 282 317 352 387 423 1 1-1/2 1-1/2 1-1/2 2
4000 2778 555 235 282 329 376 423 470 517 563 2 2 2 3 3
LU- 115 5000 2488 560 293 252 411 470 528 587 646 704 1-1/2 2 2 2 3
6000 2985 565 352 423 493 563 634 704 775 NA 3 3 3 3 5
LU- 215 7000 1741 835 411 493 565 657 740 822 904 896 1-1/2 2 2 3 3
8000 1990 870 470 563 657 751 845 939 1033 1127 2 3 3 3 5
9000 2239 850 528 634 740 845 951 1057 1162 1268 3 3 5 5 5
10000 2488 850 587 704 822 939 1057 1174 1291 1409 5 5 5 5 7-1/2
12000 2985 885 704 845 986 1127 1268 1409 1550 1690 7-1/2 7-1/2 7-1/2 10 10
LU- 218

NOTE 3

 14000 2443 1300 822 986 1150 1315 1479 1643 1808 1972 5 7-1/2 7-1/2 7-1/2 7-1/2
16000 2792 1300 939 1127 1315 1503 1690 1878 2066 NA 7-1/2 7-1/2 10 10 10
18000 3141 1340 105 1268 1479 169 1902 2113 NA NA 10 10 15 15 15
20000 3487 1340 1174 1409 1643 1878 2113 NA NA NA 15 15 15 15 NA

NOTES: 1. Use Total Static Pressure column that will overcome total system resistance. Approximately pressure drop for component  and accessory items: burner 1/2", filter (dirty) 1/4", intake hood 1/8", birdscreen 1/8", discharge louver 1/4", Damper resistance may be ignored.

2. NA - Not Available.

3. Not Available with ETL certification above 18,000 CFM

Standard Equipment

General:

Horizontal unit with choice of HR-1 or HR-2 blower discharge

Housing:

Heavy gauge aluminized steel, printed outside, heat resistant enamel finish-inside and outside; four lifting lugs.

Burner:

Direct-fired line burner with spark ignited intermittent pilot for natural gas at inlet pressure from 4 oz. to 1 PSIG. Up to 25:1 turndown ratio.

Blowers:

Centrifugal DWDI forward curved fan(s) with one piece thru shaft and self-aligning, 200,000 hour greaseable Pillowblock ball bearings. Wheels are statically and dynamically balanced.Adjustable drives thru 10 HP.

Energy Efficient Motors:

T-frame, ODP prelubricated ball bearing type for all standard voltages.

Base Controls- Factory wired and flame tested:

  • Main gas hand shut-off value.
  • Main and pilot gas pressure regulators
  • Pilot controls.
  • Motorized electric safety shut-off value.
  • Self-contained gas modulating valve (under 500 MBH)
  • Maxitrol Series 14 (over 500 MBH).
  • Motor Starter.
  • Control transformer
  • High temperature limit switch.
  • Air flow switch.
  • Automatic mild weather burner lockout.
  • ignition transformer.
  • Electronic flame safeguard system
  • NEMA 1 control box.
  • Remote control station with switches and indicating lights.

Options and Accessories

Components:

  • Unit weatherproofing including weatherproof service enclosure.
  • Inlet or discharge shut-off dampers with motor and end switch (discharge damper recommended for outdoor units).
  • Weatherhood with rainshield and intake birdscreen.
  • Filter section with throwaway, extended surface or cleanable filters.
  • Discharge louvers; horizontal, vertical or both for double deflection
  • Vibration Isolators.
  • Roof curb & curb adapter[ frame (for use with weatherproof unit).

Burners :

Propane or propane standby.

Gas and Electrical Controls

  • FM or IRI approved controls.
  • ETL approval
  • High gas pressure regulator - 1 to 60 PSIG.
  • Ultra violet flame sensor
  • Low outlet temperature shut-off.
  • Blocked intake switch and light.
  • Fused disconnect switch.
  • Circuit analyzer with lights.
  • 2 position over-riding room thermostat for Maxitrol Series 14.
  • Maxitrol Series 44. Included discharge air monitor and field mounted space temperature selector and sensor.
  • A-200 signal conditioner to accept a 4-20 MA or 0-10VDC signal for gas value modulation   (Series 14 and Series 44 only)
  • Vertical unit blower arrangements with 24" support legs.



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