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5. Follow lighting instructions and turn thermostat up to get unit to fire. 6. If pressure as indicated by “U” tube is less than 1/2" higher or lower than indicated in Table 6, adjust regulator as described under “Meter-Timing Method,” Step 3. If pressure as indicated by “U” tube is more than 1/2" higher or lower than indicated in Table 6, check inlet pressure at unit. The inlet pressure should be 6"-7" W.C. pressure on natural gas and 12"-14" W.C. on propane gas. After adjustment move gas control knob (or lever) to off and replace 1/8" pipe plug. With the plug in place, follow the lighting instructions to put unit back in service. Heater Parts from ACF Greenhouses 11 10 12 14 16 18 20 22 24 26 28 30 35 40 45 50 55 60 70 80 90 100 120 180 150 129 112 100 90 82 75 69 64 60 51 45 40 36 33 30 26 22 20 18 15 360 300 257 225 200 180 164 150 138 129 120 103 90 80 72 65 60 51 45 40 36 30 720 600 514 450 400 360 327 300 277 257 240 206 180 160 144 131 120 103 90 80 72 60 1800 1500 1286 1125 1000 900 818 750 692 643 600 514 450 400 360 327 300 257 225 200 180 150 CHECKING INPUT RATE Figure 9 Major Gas and Electric Components Table 5 Orifice Drill Sizes with Decimal Equivalents Dia. Dia. Drill Decimal Drill Decimal Size Equivalent Size Equivalent 18 .1695 38 .1015 21 .1590 39 .0995 23 .1540 41 .0960 25 .1495 42 .0935 26 .1470 43 .0890 28 .1405 45 .0820 30 .1285 52 .0635 36 .1065 Main Burner Orifices Table 6 Manifold Pressure & Gas Consumption * Figure 10 Dials of Typical Gas Meter Natural Propane BTU/Cu. Ft. 1050 2500 No. of Model Specific Gravity 0.60 1.53 Orifices Manifold Pressure In. W.C. 3.5 10.0 CFH 28.6 12.0 Gal/Hr. Propane – .33 PD 30 Sec/cu. ft. 126 300 1 Orifice Drill Size 38 52 CFH 47.6 20.0 PD 50 Gal/Hr. Propane – .55 BD 50 Sec/cu. ft. 76 180 1 Orifice Drill Size 30 45 CFH 71.4 30.0 PD 75 Gal/Hr. Propane – .82 BD 75 Sec/cu. ft. 50 120 1 Orifice Drill Size 21 39 CFH 95.2 40.0 PD 100 Gal/Hr. Propane – 1.15 BD 100 Sec/cu. ft. 38 90 2 Orifice Drill Size 30 45 CFH 119.0 50.0 PD 125 Gal/Hr. Propane – 1.43 BD 125 Sec/cu. ft. 30 72 2 Orifice Drill Size 26 43 CFH 138.1 58.0 PD 150 Gal/Hr. Propane – 1.64 BD 150 Sec/cu. ft. 26 62 2 Orifice Drill Size 21 39 CFH 166.7 70.0 PD 175 Gal/Hr. Propane – 1.86 BD 175 Sec/cu. ft. 22 51 3 Orifice Drill Size 28 43 CFH 190.5 80.0 PD 200 Gal/Hr. Propane – 2.19 BD 200 Sec/cu. ft. 19 45 3 Orifice Drill Size 25 42 CFH 238.1 100.0 PD 250 Gal/Hr. Propane – 2.74 BD 250 Sec/cu. ft. 15 36 3 Orifice Drill Size 18 36 CFH 285.7 120.0 PD 300 Gal/Hr. Propane – 3.29 BD 300 Sec/cu. ft. 13 30 4 Orifice Drill Size 21 39 CFH 333.3 140.0 PD 350 Gal/Hr. Propane – 3.84 BD 350 Sec/cu. ft. 11 26 5 Orifice Drill Size 23 41 CFH 381.0 160.0 PD 400 Gal/Hr. Propane – 4.38 BD 400 Sec/cu. ft. 9 23 6 Orifice Drill Size 25 42 Table 4 Meter-Timing Gas (Time required for one revolution is charted for various size meter dials and various rates of gas input in cu. ft. per hour. To convert to Btuh, multiply by the heating value of the gas used.) Time for 1 Revolution, Sec. 1/2 cu. ft. 1 cu. ft. 2 cu. ft. 5 cu. ft. Input, Cu. Ft. per Hour, When Meter Dial Size is: *Above gases based on average standards. Units can be furnished for gases of different values and specific gravities. (Gal./Hr. based on 60°F. 30" Hg., 91,500 BTU/Gal.) In Canada, refer to rating plate on side of unit for orifices at high altitude. Pilot Orifice Identity Numbers Pilot Burner Identity No. Identity No. Manufacturer Natural Gas Propane Gas Honeywell BCR-18 BBR-11 Robertshaw Johnson 7715 4710 1 8  N 1 O  P L  As number appears on top of pilot orifice. PILOT TUBING FAN GUARD FAN MOTOR COMBINATION GAS CONTROL IGNITION CONTROL CONTROL TRANSFORMER JUNCTION BOX TERMINAL BOARD ENTRANCE FOR COMBUSTION AIR Heater Parts from ACF Greenhouses 12 Standard Model Number PD 30 PD 50 PD 75 PD 100 PD 125 PD 150 PD 175 PD 200 PD 250 PD 300 PD 350 PD 400 Btu/Hr. Input 30,000 50,000 75,000 100,000 125,000 150,000 175,000 200,000 250,000 300,000 350,000 400,000 Btu/Hr. Output 24,000 40,000 60,000 80,000 100,000 120,000 140,000 160,000 200,000 240,000 280,000 320,000 Entering Airflow CFM 440 740 1100 1460 1850 2180 2550 2870 3700 4460 4870 5440 Outlet Velocity 515 610 736 860 870 931 959 819 1053 1123 1068 1016 Air Temp. Rise °F 51 50 51 51 50 51 51 52 50 50 53 54 Mounting Hgt. (Max. Ft.)  7 9 12 14 14 16 17 15 19 21 20 19 Heat Throw Ft.  (Max. Mtg. Hgt.) 25 33 41 49 51 55 59 51 67 74 70 69 Horsepower 1/40 1/40 1/12 1/12 1/8 1/8 1/6 1/6 1/3 1/2 3/4 3/4 RPM 1550 1550 1550 1550 1625 1625 1075 1075 1075 1075 1125 1125 Type Shaded Shaded Shaded Shaded Perm. Perm. Perm. Perm. Perm. Perm. Perm. Perm. Pole Pole Pole Pole Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Unit total Power (amps) 1.3 1.3 2.5 2.5 2.6 2.6 3.1 3.1 5.7 7.8 8.3 8.3 DIMENSIONS/PERFORMANCE – PD A H D (OPENING) BB E AA B K W X F C K G L - Approx MIN. DISTANCE TO WALL IS L + 6" J VENT PIPE EE (MIN. DISTANCE TO WALL) L LL Dimensions (inches) — PD Do not use pro...

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