Hauck RAF Operating instructions

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Hauck RAF Operating instructions | Manualzz
INSTRUCTIONS
RAF RETAIN-A-FLAME GAS BURNER NOZZLES
WARNING
These instructions are intended for use only by experienced, qualified
combustion start-up personnel.
Adjustment of this equipment and its components, by unqualified personnel, can
result in fire, explosion, severe personal injury, or even death.
TABLE OF CONTENTS
A.
B.
C.
D.
E.
F.
I.
Subject
General Information ……………………………………………………….…..….…….
Receiving and Inspection ………………………………………….…….…...…….…..
Capacities ………….…………………………………………………………………….
Dimensions …………….………………………………………………………………...
Installation ………….……………………………………………………………….……
Operation …..…………………………………………..………………….…..….……...
Maintenance …………………………………………………………………..…………
Page
2
2
3
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These instructions are intended to serve as guidelines covering the installation, operation, and maintenance of Hauck equipment. While
every attempt has been made to ensure completeness, unforeseen or unspecified applications, details, and variations may preclude
covering every possible contingency. WARNING: TO PREVENT THE POSSIBILITY OF SERIOUS BODILY INJURY, DO NOT USE OR
OPERATE ANY EQUIPMENT OR COMPONENT WITH ANY PARTS REMOVED OR ANY PARTS NOT APPROVED BY THE
MANUFACTURER. Should further information be required or desired or should particular problems arise which are not covered
sufficiently for the purchaser's purpose, contact Hauck Mfg. Co.
HAUCK MANUFACTURING CO., P.O. Box 90 Lebanon, PA 17042-0090 717-272-3051
4/02
Fax: 717-273-9882
RAF-9
Page 2
RAF-9
WARNING
This equipment is potentially dangerous with the possibility of serious personal injury
and property damage. Hauck Manufacturing Company recommends the use of flame
supervisory equipment and fuel safety shutoff valves. Furthermore, Hauck urges rigid
adherence to National Fire Protection Association (NFPA) standards and insurance
underwriter’s requirements. Operation and regular preventative maintenance of this
equipment should be performed only by properly trained and qualified personnel.
Annual review and upgrading of safety equipment is recommended.
A. GENERAL INFORMATION
Hauck Retain-A-Flame Burner Nozzles are recommended for blast firing of gas-air mixtures
where a small amount of excess air induced around the nozzle is allowable. These nozzles will
retain the flame at their tips under usual operating conditions. The nozzle design permits a wider
range of mixture pressures without blowing the flame off the burner tip or backfiring; little
turbulance is caused in the main stream of gas mixture, with a resulting long, cylinder flame of
good stability. Combustion is quieter than with usual nozzles of this class.
B. RECEIVING AND INSPECTION
Upon receipt, check each item on the bill of lading and/or invoice to determine that all
equipment has been received. A careful examination of all parts should be made to ascertain if
there has been any damage in shipment.
IMPORTANT
If the installation is delayed and the equipment is
stored outside, provide adequate protection as
dictated by climate and period of exposure. Special
care should be given to all motors and bearings, if
applicable, to protect them from rain or excessive
moisture.
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RAF-9
C. CAPACITIES
Nozzle Size
05
07
10
12
15
20
30
40
Pipe Size
NPT
(See Note 3)
½
¾
1
1¼
1½
2
3
4
Discharge
Area
(In2)
.11
.18
.27
.7
1.1
1.8
2.8
5.2
Capacity
@ 6"wc Mixture Press.
(1000 Btu/hr)
40
65
100
250
390
670
1000
2000
NOTES:
1. Capacities based on 80% combustion air in the mixture, natural gas with HHV of 1000 Btu/ft3,
0.60 S.G. and stoichiometric air/gas ratio of 10:1 with nozzle firing under no backpressure.
2. Nozzle will ignite with as little as 50% combustion air in the mixture, however, the remaining
air must be induced.
3. Nozzle sizes 20, 30, and 40 are also available with a square flanged connection; flanged to
NPT adapters are also available.
Table 1. Capacities
Page 4
RAF-9
D. DIMENSIONS
Dimensions (Inches)
Nozzle No.
RFS 1105A
RFS 1107A
RFS 1110A
RFS 1112A
RFS 1115A
RFS 1120A
RFS 1130A
RFS 1140A
Pipe Size
NPT
½
¾
1
1¼
1½
2
3
4
B
1¾
1¾
2 1/8
2 3/8
2 7/8
3 7/8
4 5/8
5½
C
/16
7
/16
9
/16
7
/8
1 1/8
1½
1 7/8
2 9/16
5
D
1½
1½
1 7/8
2½
3 1/8
3 7/8
4 5/8
5½
E
1 ½*
1 ½*
1 5/8
2 3/16
2 11/16
3 3/8
4¼
5 1/8
Note: *Nozzles for 1105A and 1107A are round.
Figure 1. Dimensions - Series 1100 Retain-A-Flame Straight Nozzles
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RAF-9
D. DIMENSIONS (Continued)
Nozzle No.
RFE 1220A
RFE 1230A
RFE 1240A
Dimensions (Inches)
A
B
9
3 /16 4 3/16
5 5/8 4 7/8
6 3/8 5 ½
C
/32
7
/16
7
/16
11
D
/16
3
/8
3
/8
5
E
4 5/8
7
8
F*
/16
1 5/16
1½
13
G
/16
7
/16
½
7
H
J
K
5
5 /16 1 ½ 3 3/16
7 ½ 1 7/8
4
7
9
8 /16 2 /16 5 9/16
L
1½
1 25/32
2 5/8
Note: * Flange to threaded adapters available.
GY257
Figure 2. Dimensions - Series 1200 Retain-A-Flame Flanged Elbow Nozzles
M
3 3/8
5 1/4
6
Page 6
RAF-9
E. INSTALLATION
1. Secure the nozzle to the inspirator, booster, mixer, or mixture piping as required. The
threaded nozzles are designed with female connections and may require a threaded
connector. The flanged nozzles are designed to be held firmly in place by 4 bolts, one in
each corner of the flange.
Figure 3. Spark Plug Ignition of Straight And Elbow Nozzles
2. All straight, and elbow nozzles can be ordered with a spark plug ignition system. When so
equipped, the following applies:
A. Ensure that the spark plug is properly seated in the nozzle.
B. Connect the spark plug to a spark transformer with a high voltage lead wire.
C. Equip the transformer with a momentary pushbutton.
GX142
Figure 4. Mounting Bracket BMB 2253A – BMB 2255A
3. Furnace wall mounting brackets are available to mount; all manually ignited straight and
elbow nozzles, all spark ignited elbow nozzles, and spark ignited straight nozzles in the 2" to
4" range.
A. Securely fasten the mounting bracket to the furnace wall. Be sure to maintain a proper
Alignment between the openings in the bracket, the wall, and the refractory burner block
(if used).
Page 7
RAF-9
B. Supply the proper external support for all piping and equipment preceeding the nozzle.
The bracket is designed to properly position and support the nozzle only.
C. Center the nozzle orifice in the bracket opening and tighten the 3 retaining screws.
D. Prior to ignition, open the protective shutter plate (present on mounting brackets).
WARNING
Adjustment of this equipment, by unqualified
personnel, can result in fire, explosion, severe
personal injury, or even death.
E. OPERATION
All Retain-A-Flame nozzles may be ignited manually and, if properly equipped by a spark plug
ignition system. Prior to ignition, ensure that the protecting shutter plate (if present) is in
the full open position.
When the nozzle is not in use, maintain the protecting shutter plate (if present) in the fully closed
position. This will provide maximum heat protection for the nozzle assembly.
CAUTION
A flash-back can cause not only serious damage to
equipment but also severe personal injury, or even
death.
"Flash-back" occurs when a flame front moves back through the burner nozzle, and possibly
back to the mixing point. It occurs when the flame velocity exceeds the mixture velocity through
the burner nozzle. As a rule of thumb, to prevent an occurrence of flash-back the mixture
pressure must exceed the following:
A. .20 "wc for propane
B. .25 "wc for natural gas
C. .40 "wc for manufactured gas
However, an uneven distribution of the gas/air mixture through the nozzle, and oversized
nozzle, or an obstruction can cause a flash-back to occur when the pressure is greater than that
stated above.
If a flash-back occurs, immediately stop the flow of gas through the mixer/burner system. If
necessary, allow the mixer, mixture piping and/or the nozzle to completely cool before
attempting to reignite the burner. If the flash-back occurred with mixture pressures greater than
those indicated above, inspect the nozzle and remove any obstructions or residue build-up. If
the conditions persist, it may be due to the piping configuration or the nozzle being usedConsult Hauck for recommendations.
F. MAINTENANCE
These nozzles are constructed of heat resisting cast iron, properly proportioned to withstand
severe operating conditions. In addition, they are accurately machined to secure the proper
flame and ignition characteristics. Under normal conditions and temperatures no service should
be necessary.

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