Space-Ray LoPro LPBL42-N5 User manual

Form No. 43539500
July 2021 A
LOW PROFILE RADIANT GAS BROODER
MODELS: LPBL42-N5 / LPBL42-L5 with DIRECT SPARK IGNITION
INSTALLATION
AND OPERATION
INSTRUCTIONS
Patent Pending
OWNER/INSTALLER: For your safety this manual must be carefully read before installing, operating or
servicing this brooder. This brooder is intended for use with either Natural Gas or Propane Gas. It must be
installed by a qualified service person or a licensed contractor in accordance with state and local codes. In
the absence of these codes, the installation must conform to the National Fuel Gas Code ANSI Z223.1 (latest
edition) also know a NFPA54 or the CAN/CGA-B149.1/2 Installation Code in Canada.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury, property
damage or death. Refer to this manual. For assistance or additional information, consult a qualified
installer, service agency or the gas supplier.
INSPECT all combustion air openings into the building and, if necessary, clear as they become blocked by
litter, dust, feathers or other matter.
INSPECT and clean the brooder filters on a regular basis to allow proper brooder operation.
FOR YOUR SAFETY: EXHAUST FANS MUST be operating on an appropriate cycle when brooders are
operating to avoid a high concentration of carbon monoxide. When used without fresh air, this brooder may
give off carbon monoxide, an odorless and poisonous gas. CARBON MONOXIDE POISONING MAY LEAD TO
DEATH. Early signs of carbon monoxide poisoning resemble the flu with headaches, dizziness and nausea. If
you experience these signs, GET FRESH AIR IMMEDIATELY! Have the brooders serviced as soon as possible
and check the ventilation in the house.
These brooders are designed for agricultural applications and may operate with the use of either Natural Gas
or Liquid Propane (LP) Gas. Check the brooder’s nameplate to determine the correct gas type before
proceeding with installation.
IF YOU SMELL GAS:
!DO NOT try to light any appliance.
!DO NOT touch any electrical switch; do not use any
telephone in your building.
!IMMEDIATELY call your gas supplier from a neighbor's
telephone. Follow the gas supplier's instructions. If you
cannot reach your gas supplier, call the fire department.
DO NOT store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
SAVE THIS MANUAL
FOR FUTURE REFERENCE.
FOR YOUR SAFETY
Scan warranty QR code on the right to
register your product.

Form No. 43539500
July 2021 A –1–
TABLE OF CONTENTS
Section
Description Page
1.0)
GENERAL INFORMATION ............................................................................................ 1
2.0)
BROODER SPECIFICATIONS....................................................................................... 2
3.0)
BROODER CONTROL DESCRIPTION.......................................................................... 2
3.1)
BROODER ACCESSORIES .......................................................................................... 3
3.2)
PACKING LIST............................................................................................................... 5
4.0)
BROODER ASSEMBLY................................................................................................. 6
4.1)
GAS VALVE WIRE CONNECTIONS .............................................................................. 10
5.0)
MINIMUM CLEARANCES TO COMBUSTIBLES .......................................................... 12
6.0)
BROODER INSTALLATION........................................................................................... 12
7.0)
GAS CONNECTIONS ..................................................................................................... 13
7.1)
INSTRUCTIONS FOR TESTING OF GAS LEAKS AND PROPER GAS PRESSURE... 16
7.2)
GAS PIPE SIZING EXAMPLE ....................................................................................... 18
8.0)
ELECTRICAL CONNECTIONS ....................................................................................... 19
9.0)
LIGHTING AND SHUTDOWN INSTRUCTIONS............................................................ 22
10.0)
VENTILATION ................................................................................................................ 23
11.0)
CLEANING AND ANNUAL MAINTENANCE................................................................. 23
12.0)
TROUBLESHOOTING .................................................................................................... 26
13.0)
REPLACEMENT PARTS GUIDE.................................................................................... 28
1.0) GENERAL INFORMATION
This brooder is a self-contained infrared radiant brooder for agricultural locations where flammable gases or
vapors are not generally present.
Installation of the brooders must be in accordance with all applicable codes shown in the instructions and/or
the local codes and authorities having jurisdiction. In the absence of local codes, the brooder must be
installed in accordance to the National Fuel Gas Code ANSI Z223.1/NFPA54 in the U.S. or the CAN/CGA-
B149.1/2 Installation Code in Canada. Clearances to combustibles as outlined in the manual should always
be observed.
Inspect all openings and filters regularly and clean as necessary. This is necessary because litter, dust
feathers and other matter can become airborne and clog openings and filters and adversely affect brooder
operation and performance.
Every brooder should be located with respect to building construction and other equipment so as to permit
access to the brooders. Each installer shall use skillful and reliable installation practices when locating the
brooders and must give consideration to service accessibility.
This brooder is for INDOOR INSTALLATION ONLY and is used in an UNVENTED mode. The term Unvented
actually means Indirect Vented. While the products of combustion are expelled into the building, national
codes require ventilation in the building to dilute these products of combustion. This ventilation must be
provided by gravity or mechanical means. Ventilation requirements are addressed further in these
instructions.
This heater complies with IAS U.S. No. 8-94 (Draft No. 2) and CAN-1-2-20-M85.
Copies of the National Fuel Gas Code (ANSI Z223.1-latest edition) are available from the CSA at 8501 E.
Pleasant Valley Rd., Cleveland, OH 44131 or 55 Scarsdale Road, Don Mills, Ontario M3B 2R3. All NFPA
codes are available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
This product can expose you to chemicals including ceramic fibers,
which are known to the State of California to cause cancer, and carbon
monoxide, which is known to the State of California to cause birth
defects or other reproductive harm. For more information go to
www.p65warnings.ca.gov.

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–2–July 2021 A
2.0) BROODER SPECIFICATIONS
INPUT RATING
Propane Gas:
42,000 BTU/h (12.31 kW)
Natural Gas:
42,000 BTU/h (12.31 kW)
Propane/Butane Mix Gas
42,000 BTU/h (12.31 kW)
GAS SUPPLY PRESSURE
Propane Gas:
11” – 14” W.C. (27.4 - 34.8 mbar)
Natural Gas:
5” – 14” W.C. (12.4 - 34.8 mbar)
Propane/Butane Mix Gas
11” – 14” W.C. (27.4 - 34.8 mbar)
MANIFOLD PRESSURE
Propane Gas:
10” W.C. (24.9 mbar)
Natural Gas:
4” W.C. (10.0 mbar)
Propane/Butane Mix Gas
10” W.C. (24.9 mbar)
ORIFICE SIZE
Propane Gas:
5/64” (.0781”)
Natural Gas:
3.1mm (.1220”)
Propane/Butane Mix Gas
1.8mm (.0709”)
MOUNTING HEIGHT
Recommended - 72” (1830mm)
BROODER SPACING
25’ – 40’ (7.6m – 12.2m)
BROODER SIZE
Canopy Diameter:
35” (890mm)
Brooder Height:
13.75” (349mm)
WEIGHT
Assembled Brooder:
21.5 lbs (10 kg)
VENTILATION REQUIRED
Per Brooder:
168 CFM (286 m3/hr)
GAS CONSUMPTION
Propane Gas:
0.46 GPH (1.75 L/hr)
Natural Gas:
0.42 Therm (44.3 MJ/hr)
Propane/Butane Mix Gas
0.46 GPH (1.75 L/hr)
ELECTRICAL SUPPLY
24 VAC, 1 Ph, 60Hz, 0.8A
3.0) BROODER CONTROL DESCRIPTION
Brooder Control No. 5 is designed for single or multi-zone installations using one or more thermostats. A
Zone Control (available as an accessory, Part No.43619050) is required to provide a 24-Volt power supply to
each brooder. The burner is controlled with a Direct Spark Ignition (DSI) switch, which is designed to provide
100 percent gas shut off of the main valve in the event that the main burner flame is not sensed.

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July 2021 A –3–
3.1) BROODER ACCESSORIES
A) Zone Control Panel Model ZCP22, Part No. 43619050
This is a power supply control which utilizes a 375VA transformer to
provide the required 24VAC for single or multiple groups (zones) of
brooders. Refer to electrical section of manual for allowable heater
quantities per transformer.
B) Transformer Replacement –375VA 120/240VAC
24VAC, Part No. 30222070
C) Thermostat –Environmental (EW-4-20), Part No. 30525010
Ratings: SPDT 120/240VAC, 16A Full Load
Temperature range: -40 Deg. F to 104 Deg. F +/- 2.5 Deg.F
Differential
Housing: Watertight ABS plastic meets NEMA 4x and NEC Article 547-
4 requirements for use in harsh environments. Adjustable dial allows
thermostat to be recalibrated.
D) Thermostat –Individual, Part No. 43317060
Temperature range: 58 Deg. F to 122 Deg. F with ten (10)
temperature scale ranges.
The thermostat is used to control individual brooders for Turkey heating
applications. Includes Mears thermostat, plastic enclosure, bracket and
screws to mount to White-Rodgers #25M18 gas valve.

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E) Transformer Kit, Part No. 44195160
This kit has a 120/24VAC 20VA transformer which
provides the required 24VAC for a single brooder. A
moisture proof junction box, cord connectors and wire nuts
are included.
F) Hose Kits - No. 5A Controls:
Part No. 30522060 - 6FT Hose with 3/8” swivel female flare fittings and 6” spring. Ball valve not included.
Part No. 30522100 - 10FT Hose with 3/8” swivel female flare fittings and 6” spring. Ball valve not included.
Part No. 30522069 - 6FT Hose with 3/8” swivel female flare fittings and 6” spring. Includes ball valve.
Part No. 30522109 - 10FT Hose with 3/8” swivel female flare fittings and 6” spring. Includes ball valve.
Kit Components:
Item Number
Part Number
Description
Qty
1
30241010
MALE FTG 45 FLARE 3/8 TUBE x 1/2 MPT (for gas shut-off valve)
1
2
30241000
MALE FTG 45 FLARE 3/8 TUBE x 3/8 MPT (for main gas valve)
1
3
30523060
HOSE, 3/8 ID x 6FT with 3/8" F SWIVEL FITTINGS and 6” Spring
1
4
30523100
HOSE, 3/8 ID x 10 FT with 3/8" F SWIVEL FITTINGS and 6” Spring
1
5
30285000
Manual Gas Shut-Off Ball Valve 1/2 FPT
1
G) Manual Gas Shut-Off Ball Valve –1/2”NPT, Part #30285000
H) Wire Brush –Long, Part #43295020
Wire Brush –Short, Part #43295010

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July 2021 A –5–
3.2) PACKING LIST
A. Fastener Kit - 43534140
Ref.
Part No.
Each Fastener Kit Includes:
Qty.
1
02167019
Hex Locknut 1/4-20 KEPS SS
5
2
02129100
Flat Washer 1/4
5
3
42873050
U-Bolt Clamp 1/4-20
1
4
42873059
Stand-Off Plate
1
5
02127250
Hex Nut #10-24 SS –7/16” AF
3
6
30257000
Minature Cable Tie
1
B. Main Brooder Components
Ref.
Part No.
Each Package Includes:
Qty.
1
43303000
Reflector Canopy
1
2
43524550
Emitter Assembly –(with stamped cap & spacers)
1
3
44542250
Gas Control Arm Assembly –Propane Gas (with manifold bracket and v-clamp)
1
4
44464208
Burner Base Assembly –(with electrode)
1
5
44543100
Ignition Control Assembly
1
6
43311900
Plate, Label Holder
1
7
43316250
Cup, Air Restrictor (Natural gas only)
1
8
43539500
Installation and Operation Manual -not shown-
1

Form No. 43539500
–6–July 2021 A
4.0) BROODER ASSEMBLY
1. Make sure that all components are present before assembling the brooder.
The Fastener Kit contains all the nuts, screws and washers required for brooder assembly. You will need
the following tools for brooder assembly:
Nut Driver - Size 7/16”
Crescent Wrench (2 each)
STEP 1: Place the canopy over the emitter assembly and locate the (2) studs that are located above the
slotted center cut out. Loosely attach to the studs (2) 1/4-20 hex nuts and flat washers.
STEP 2: Insert the tab of the ignition control assembly bracket into the slotted hole of the canopy. Lower
the ignition control over the mounting stud of the emitter Secure with a 1/4-20 hex nut and washer.
Tighten this nut and washer and the two from above.

Form No. 43539500
July 2021 A –7–
STEP 3: Loosen the screws from the lid and remove. Route the ignition cable through the cable gland.
STEP 4: Flip the emitter and canopy over. Align the burner with the holes in the canopy. Attach the burner
using (2) #10-24 hex nuts.
STEP 5: The gas control arm comes equipped with the manifold bracket pre-attached using a v-clamp and
#10-24 screw. Prior to assembly, rotate the manifold bracket as shown without loosening the screw.

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STEP 6: Attach the manifold support bracket to the rim of the canopy using the U-bolt, (2) 1/4-20 hex nuts,
flat washers and stand-off plate. NOTE: DO NOT COMPLETELY TIGHTEN FASTENERS AT THIS STAGE YET.
STEP 7: Open the swivel clamp located on the burner by carefully lifting the clamp over the latch. Place the
orifice fitting into the slotted portion of the burner and latch in position by engaging the swivel clamp over the
latch. *
*Note: For natural gas versions see STEP 10.

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July 2021 A –9–
STEP 8: Slide the label holder plate between the manifold support bracket and rim of canopy as shown. The
control arm and burner to be in line with each other. Tighten the hex nuts from STEP 6 above after any
adjustments are made.
STEP 9: Connect the female quick connect receptacle of the ignition cable to the electrode. Secure the cable
portion to the gas control arm using a wire tie included in the fastener kit.

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–10–July 2021 A
STEP 10:NATURAL GAS UNITS REQUIRE USE OF AN AIR RESTRICTOR CUP. Place the cup on the burner
manifold tubing before attaching the gas control as shown above in STEP 7. Engage the slots from the cup
with the hemmed flanges of the burner. Engage the round bosses of the cup with the holes in the burner.

WARNING: ONCE THE BROODER IS ASSEMBLED AND BEFORE IT IS FIRST FIRED, YOU MUST CHECK FOR
GAS LEAKS! USE A SOAP AND WATER SOLUTION AND APPLY AT ORIFICE FITTING AND FIELD CONNECTIONS
TO THE GAS VALVE.
4.1) GAS VALVE WIRE CONNECTIONS
STEP 1: Flip the brooder over and feed the red and blue wire leads from the gas valve through the cable gland
of the ignition control box.
STEP 2: Connect both red wires marked 4and 2 to the terminals of the 5-pole terminal block having a red
wire connected.
STEP 3: Connect both blue wires marked 1and 3to the terminals of the 5-pole terminal block having a blue
wire connected.
Refer to the wiring diagrams located in Section 8, Electrical Connections for the incoming power connections.
Retighten the cable gland after all wiring connections are complete.

Form No. 43539500
July 2021 A –11–

Form No. 43539500
–12–July 2021 A
5.0) MINIMUM CLEARANCES TO COMBUSTIBLES
Minimum clearances to combustible materials shall be measured from the outer surface of the canopy as
shown in the following table:
MINIMUM CLEARANCES TO COMBUSTIBLES
Sides:
Below:
Above:
36” (915mm)
72” (1830mm)
18” (460mm)
6.0) BROODER INSTALLATION
1. Locate brooders approximately 25’ to 40’ (8m to 12m) apart, in a row, as needed for bird comfort and
building heat loss. If more than one row is desired, stagger rows for best heat distribution. Attach the
Chain Kit (optional) to the top of the brooder Canopy. NOTE: Make sure that the large hook (short chain
length) is secured to the hanging lug on the side of the brooder closest to the gas valve.
2. Suspend the brooder at the desired height above the floor (litter) level, normally 60” to 72” (1520mm to
1830mm). For brooders connected to a winch (to allow for adjustment of brooder height), connect each
Chain Kit using a chain or cable suitable for the weight of each brooder. DO NOT USE ROPE.Size the
winch and cable so that it is capable of handling the total weight of all brooders and gas piping involved.
NOTE: Connect a safety chain to each brooder and anchor it to the house structure above each brooder
to prevent it from falling onto the litter if the cable/chain breaks or the winch fails. THE GAS HOSE
SHOULD NEVER BE USED AS A SAFETY CHAIN!
3. Connect the gas line and electrical supply (if required) to each brooder as outlined in Sections 7 and 8.
NOTE: After connection of the gas line, make sure that the brooder is suspended with the control side
approximately ½” (13mm) below the other side of the brooder to prevent hot products of combustion
from damaging the gas control valve.
4. When installing the LoPro series into houses with tunnel ventilation, we suggest
hanging the brooders so that the venturi is facing the tunnel fans. This will assist in
reducing the amount of dust pulled into the burner venturi when the brooder is not
operating.

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July 2021 A –13–
7.0) GAS CONNECTIONS
1. Gas piping for the house must be sized to be capable of satisfying the entire demands of the house
should all equipment be operating at the same time. Please use Table 1 (taken from the National Fuel
Gas Code) for the sizing of piping for the house. An example using this table is shown.
2. Connect to the supply tank or manifold in accordance with the latest edition of the National Fuel Gas
Code (ANSI Z223.1) and/or local codes. Authorities having jurisdiction should be consulted before the
installation is made. Refer to the latest edition of CAN/CGA B.149-1/2 Installation Codes for Gas
Burning Appliances and Equipment in Canada.
3. Pipe joint compounds must be resistant to the action of liquefied petroleum (LP) gases.

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4. Gas connections to individual brooders shall be made using flexible gas connectors, or they can utilize
rubber hosing suitable for LP gas usage (to allow movement of the brooders for cleaning, etc.). Check
with the authorities having jurisdiction and/or local codes prior to choosing an individual gas connection
method.
5. Connection to a new installation with accessory hose and fittings is shown below:
Item Number
Part Number
Description
Qty
1
30285000
VALVE, MANUAL BALL 1/2"
1
2
30241010
MALE FTG 45 FLARE 3/8 TUBE x 1/2 MPT
1
3
30241000
MALE FTG 45 FLARE 3/8 TUBE x 3/8 MPT
1
4
30523060
HOSE, 3/8 ID x 6FT with 3/8" F SWIVEL FITTINGS
1
5
30523100
HOSE, 3/8 ID x 10 FT with 3/8" F SWIVEL FITTINGS
1
Make sure connection is secure before turning on the gas. See section 7.1) for procedures to test for gas
leaks before putting the brooders into operation.

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July 2021 A –15–
6. Suspend the gas hose line to the ceiling structure using safety cable. This will reduce the potential that
the hose can touch the canopy when the brooder is lowered or raised.
7. It is strongly recommended that a field installed manual shut-off valve be installed in the gas piping to
each brooder. This will allow service of individual brooders without having to shut down the entire gas
supply system. When installing the gas line, it is recommended to connect a sediment trap (shown
below) in the gas line at a point before the gas line enters the house. This trap or “drip leg” acts to trap
impurities and water that can condense out of the gas. It helps to keep impurities from entering the
appliance and causing potential damage to gas valves, etc. Periodically remove the cap from the drip leg
and drain any accumulation of dirt and/or water.
8. After all gas connections and adjustments are made, check all gas connections for leaks (not just the gas
connections at the brooders) using a heavy soapsuds solution or by using one of the methods listed in
Appendix D of the National Fuel Gas Code. WARNING: DO NOT USE AN OPEN FLAME OF ANY KIND TO
TEST FOR LEAKS!
9. It is recommended that a pressure gauge be installed at the end of the gas piping run to allow you to
check the gas supply pressure in the system. This needs to be capable of accurately measuring in units
of inches of water column or mbar.

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7.1) INSTRUCTIONS FOR TESTING FOR GAS LEAKS AND PROPER GAS
PRESSURE
WAR N IN G: DO NOT OMIT TH E SE T EST S !
TESTING THE INSTALLATION FOR GAS LEAKS:
1. Inspect all connections and appliance valves to be sure connections are wrench-tight and that all
appliance valves are closed.
2. Connect a low-pressure test set to the low pressure piping system just upstream of the appliance
regulators and control. NOTE: A dry gauge manometer is available as an accessory (Part No.
43649000).
3. Fully open the LP gas container valve slowly to pressurize the piping system. Once the system is
pressurized and stabilized, close the container valve tightly.
4. Observe the indicated pressure on the low-pressure test set gauge. This reading should be approximately
equivalent to the set delivery pressure of the final stage regulator. Now, slowly open one burner valve on
the appliance to vent off just enough gas to reduce the pressure on the test gauge by 1” water column,
then close the burner or pilot valve.
If the pressure remains unchanged on the gauge for at least 10 minutes, the system can be assumed leak-
tight. If a drop in pressure does occur, it indicates a leak in the system.
If the pressure drop occurs, check the joints, connectors, and other possible points of leakage with an
approved, high-quality leak detection solution. NEVER USE A MATCH OR OPEN FLAME TO CHECK FOR
LEAKS. Once a leak has been located and repaired, repeat Steps 3 and 4 above. If there is an increase in
pressure, it indicated that the LP gas container valve is not shut off tightly. Shut off the valve tightly and
repeat Step 4 above.
NOTE: Do not expose final stage piping to excessive heat or direct sunshine during the leak test. Pressure
build-up in the line due to heat may compensate for pressure loss due to leaks. This will prevent the gauge
reading from indicating system leaks.
WARNING: Gas Pressure Testing is to be performed only by qualified personnel.
CHECK GAS INLET (SUPPLY) PRESSURE:
1. Be sure the valve is in the “OFF” position before removing the pressure tap plug at the valve. Connect a
low-pressure test set (water manometer or dry gauge) to the 1/8” NPT Inlet Pressure Tap connection
Turn the valve to the “ON” position. DO NOT EXCEED THE PRESSURES SHOWN IN THE GAS PRESSURE
TABLE.
2. Turn the valve back to the “OFF” position before removing the test set and replacing the plug. Repeat the
gas leak test at the plug.

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*CHECK GAS OUTLET (MANIFOLD) PRESSURE:
1. Be sure that the valve is in the “OFF” position before removing the pressure tap plug at the valve. With
the main burner operating, check the manifold pressure using a lower-pressure test set connected to the
1/8” NPT Outlet Pressure Tap. Gas valves are combination valves with built-in appliance regulators.
These regulators are factory set and should not require adjustment. They should provide the correct
manifold pressure at the varying supply pressures noted in the Gas Pressure Table below. DO NOT
EXCEED THE PRESSURES SHOWN IN THE GAS PRESSURE TABLE.
GAS PRESSURE TABLE
BROODER
MODEL
GAS TYPE
MANIFOLD
PRESSURE
SUPPLY PRESSURE
Minimum
Maximum
LPBL42-N5
Natural Gas
4”WC (10.0 mbar)
5”WC (12.4 mbar)
14” WC (34.9 mbar)
LPBL42-L5
Propane Gas
10”WC (24.9 mbar)
11”WC (27.4 mbar)
14” WC (34.9 mbar)
LPBL42-B5
Propane/Butane Mix Gas
10”WC (24.9 mbar)
11”WC (27.4 mbar)
14” WC (34.9 mbar)

Minimum permissible gas supply pressure for the purpose of input adjustment.
*Note: The control no. 5 is equipped with gas valve #25M18-715 having a Flip-Flop convertible regulator
which is for conversion from LP to Nat Gas (or vice-versa) and cannot be field adjusted for outlet (manifold)
pressure. See separate instructions for converting from one gas to another.
REGULATOR LOCK-UP AND LEAKAGE:
After the leak testing and delivery pressure tests have proven satisfactory, the regulator lock-up and leakage
test may be performed. The lock-up pressure of the final stage regulator should be slightly higher than, but
not more than, 120% of the set delivery pressure. For example, on a delivery pressure setting of 12” water
column, the maximum allowable lock-up pressure is 14.4” water column.
To perform the lock-up and leakage test, follow these steps:
1. With the LP tank valve fully open, shut off all appliance valves so there is no demand for gas.
2. A slight rise in pressure will occur under these conditions. This rise should be no more than 120% of the
delivery pressure. This is the lock up pressure. NOTE:A quick rise in pressure above the allowable lock-
up point could indicate undersized piping, a worn seat disc or foreign material in the seating area. This
condition must be corrected before putting the system in service.
3. Continue the test for five minutes or more. If a creeping rise in pressure is noticed, the final stage
regulator seat is not closing off properly. The regulator must be replaced or repaired, and the system
retested, before putting the system in service.

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7.2) GAS PIPE SIZING EXAMPLE
House Size: 40’ x 400’
Brooder Quantity: 14
Individual Brooder Capacity: 42,000 Btu/hr
Second Stage Regulator Pressure: 14” W.C.
Operating Pressure: 11”W.C., LP gas with all brooders operating
STEP 1.Gas should be run at high pressure from the LP tank to the second stage regulator at the house.
Using the above house configuration example, calculate the gas pipe sizing. First, calculate the total distance
from the second stage regulator to the furthest brooder. In the figure above, that distance equals 202’ (20’ +
182’). Using Table 1, look up the row for 200’ and select the smallest pipe size that has the capacity for the
flow of the end brooder (42,000). The smallest pipe size is ½” with a capacity of up to 58,000 Btu/hr over
200’.
STEP 2.Calculate the distance from the second furthest brooder to the secondary regulator. In the example,
that distance equals 174’. Using Table 1, look up the row for 174’. As 174’ is not listed, you will use the next
distance up, in this case, 200’. Then select the smallest pipe size that has the capacity for the flow of both
the furthest (#7) and second furthest (#6) brooders, which combines to 84,000 Btu/hr. The smallest pipe
size is ¾” with a capacity of up to 120,000 Btu/hr over 200’. Repeat this process for each brooder until you
reach the Tee. Table 2 shows the completed example.
STEP 3.At the Tee, calculate the total distance to the secondary regulator. In this example, that equals 20’.
Using Table 1, look up the row for 20’ and select he smallest pipe size that has the capacity for the flow of all
the brooders connected to the pipe system (588,000). The smallest pipe size is 1” with a capacity of up to
788,0000 Btu/hr over 20’.

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TABLE 1.-- LP Gas Pipe Sizing Between Single or Second Stage Regulator and Brooders Per ANSI Z223.1 National Fuel Gas Code-1992
Tubing Size, O.D. Type L
Nominal Pipe Size, I.D. Schedule 40
3/8”
1/2”
5/8”
3/4”
7/8”
1-1/8”
1/2”
3/4”
1”
1-1/4”
1-1/2”
2”
3”
4”
10 Ft.
39
92
199
329
501
935
291
608
1,146
2,353
3,525
6,789
19,130
39,018
20 Ft.
26
62
131
216
346
630
200
418
788
1,617
2,423
4,666
13,148
26,817
30 Ft.
21
50
107
181
277
500
161
336
632
1,299
1,946
3,747
10,558
21,535
40 Ft.
19
41
90
145
233
427
137
287
541
1,111
1,665
3,207
9,036
18,431
50 Ft.
18
37
79
131
198
376
122
255
480
985
1,476
2,842
8,009
16,335
60 Ft.
16
35
72
121
187
340
110
231
435
892
1,337
2,575
7,256
14,801
80 Ft.
13
29
62
104
155
289
94
198
372
764
1,144
2,204
6,211
12,668
100 Ft.
11
26
55
90
138
255
84
175
330
677
1,014
1,954
5,504
11,227
125 Ft.
10
24
48
81
122
224
74
155
292
600
899
1,731
4,878
9,950
150 Ft.
9
21
43
72
109
202
67
141
265
544
815
1,569
4,420
9,016
200 Ft.
8
19
39
66
100
187
58
120
227
465
697
1,343
3,783
7,716
250 Ft.
8
17
36
60
93
172
51
107
201
412
618
1,190
3,353
6,839
300 Ft.
---
---
---
---
---
---
46
97
182
374
560
1,078
3,038
6,196
350 Ft.
---
---
---
---
---
---
43
89
167
344
515
992
2,795
5,701
400 Ft.
---
---
---
---
---
---
40
83
156
320
479
923
2,600
5,303
Maximum propane capacities listed are based on 1/2” W.C. pressure drop at 11” W.C. setting - Capacities in 1,000 BTU/hr.
TABLE 2.
Brooder #
Distance from
Regulator (ft.)
Flow Capacity
Required (Btu/hr)
Distance Used from
Table (ft.)
Smallest Pipe Size and
Capacity From Table
7 and 14
202
42,000
200
½”
--
58,000
6 and 13
174
84,000
200
¾”
--
120,000
5 and 12
146
126,000
150
¾”
--
141,000
4 and 11
118
168,000
125
1”
--
292,000
3 and 10
90
210,000
100
1”
--
330,000
2 and 9
62
252,000
60 Note 1
1”
--
435,000
1 and 8
34
294,000
40
1”
--
541,000 Note 2
Note 1: The distance used is rounded down to 60.
Note 2: The actual smallest pipe size for the required capacity is ¾” from the table. However, the gas pipe size from brooders 3 and 4
to the regulator must be 1” diameter and therefore a smaller diameter pipe cannot be used. If ¾” pipe was used from the Tee to
brooder 1, the pressure drop in the rest of the system would exceed the design pressure drop of ½”W.C.
8.0) ELECTRICAL CONNECTIONS
1. All electrical wiring shall conform to the latest edition of the National Electrical Code (ANSI/NFPA No.
70), or the code legally authorized in the locality where the installation is made. DO NOT use phone cable
for electric supply wiring.
2. The electrical system must be electrically grounded in accordance with the National Electrical Code
(ANSI/NFPA No. 70-latest edition) or the Canadian Electrical Code (C22.1 Part 1-latest edition) as
appropriate.
3. Each brooder requires a 24 volt-power supply via a 24 volt transformer. The 24 volt transformer MUST be
large enough to operate the number of brooders connected to it (see table below). This is calculated as
follows:
Note: The 24 volt common terminal must be grounded.