advertisement
Model No.
3KW0.60
3KW0.75
3KW1.00
4KW.90
4KW1.25
4KW1.50
5KW1.20
5KW1.75
5KW2.00
KEYSTONE SERIES II
OIL-FIRED
CAST IRON HOT WATER BOILER
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
An ISO 9001-2008 Certified Company
Manufactured by:
ECR International, Inc.
2201 Dwyer Avenue, Utica NY 13501 web site: www.ecrinternational.com
P/N# 240009460, Rev. B [08/2014]
TABLE OF CONTENTS
Introduction ................................................................................................................................ 3
Boiler Ratings And Capacities ........................................................................................................ 4
Safe Installation And Operation ..................................................................................................... 5
Before You Start .......................................................................................................................... 6
Installation Requirements ............................................................................................................. 7
Fresh Air For Combustion.............................................................................................................. 8
System Piping ........................................................................................................................... 10
Antifreeze In The System .......................................................................................................... 15
Chimney And Chimney Connections ............................................................................................. 15
Electrical Connections ................................................................................................................ 17
Equipment And Accessories ........................................................................................................ 18
Filling The Boiler ...................................................................................................................... 20
Operating The Boiler ................................................................................................................. 21
Checking And Adjusting Controls ................................................................................................. 22
Maintenance ............................................................................................................................. 24
Oil Boiler / Burner Cleaning Instructions ...................................................................................... 25
Oil Burner Maintenance And Cleaning ........................................................................................... 26
Service Hints ............................................................................................................................ 27
Electrical Wiring ........................................................................................................................ 28
Sequence Of Operation............................................................................................................... 30
Beckett Oil Burner, Nozzle, And Air Setting .................................................................................... 31
These instructions must be affixed on or adjacent to the boiler.
OIL FIRED BOILERS
These boilers are low pressure, sectional cast iron boilers constructed and hydrostatically tested for a maximum working pressure of 50 psi in accordance with A.S.M.E. (American Society of Mechanical Engineers)
Section IV Standards for cast iron heating boilers.
!
WARNING
Fire, explosion, asphyxiation and electrical shock hazard. Improper installation could result in death or serious injury. Read this manual and understand all requirements before beginning installation.
Save this manual for reference.
2
INTRODUCTION
Boiler is a natural draft oil fired hot water boiler comprised of cast iron sections. Boiler is available with 3, 4, or 5 cast iron sections. Sections are held together by cast iron push nipples.
Figure 1 - Dimensions
Boiler is capable of firing #2 fuel oil from 0.60 gph up to 2.00 gph. All packaged boilers include, limit, temperature and pressure gauge, safety relief valve, drain valve, flue brush, and an extra boiler tapping for expansion tank or air elimination.
BOILER RATINGS AND CAPACITIES
OIL-FIRED HOT WATER BOILERS
RATINGS & CAPACITIES
BOILER
MODEL
3KW0.60 •
3KW0.75
3KW1.00 •
4KW.90 •
4KW1.25 •
4KW1.50
5KW1.20 •
5KW1.75
5KW2.00 •
No. of
Sections
5
5
5
3
4
4
4
3
3
Firing
Rate
†GPH
0.60
0.75
1.00
0.90
1.25
1.50
1.20
1.75
2.00
Input
**MBH
84
105
140
126
175
210
***
Heating
Capacity
**MBH
74
92
120
111
153
181
Net
AHRI
Rating
**MBH
64
80
104
97
133
157
Minimum
Chimney
Size/Height
8”x8”x15’
8”x8”x15’
8”x8”x15’
8”x8”x15’
8”x8”x15’
8”x8”x15’
168
245
280
147
210
239
128
183
208
8”x8”x15’
8”x8”x15’
8”x8”x20’
A.F.U.E.
††
Dimensions (Inches)
A
86.1* 17 3/4
85.6* 17 3/4
84.4
86.0*
85.9*
85.1*
17 3/4
21
21
21
86.1* 24 1/4
85.0* 24 1/4
84.0
24 1/4
B
6
6
6
6
6
6
6
6
6
C
• These firing rates available only with alternate firing rate kits.
** MBH = 1,000 Btu Per Hour BTU = British Thermal Unit
*** Heating capacity based on 13% CO2 with 0.02” W.C. draft over fire, and #1 smoke or less. Testing was done in accordance with D.O.E. (Department Of Energy) test procedure.
† GPH = Gallons Per Hour Of Oil At 140,000 Btu Per Gallon
†† A.F.U.E. = Annual fuel utilization efficiency based upon D.O.E. Test procedure.
* As Energy Star Partner, manufacturer has determined this product meets Energy Star guidelines for energy efficiency.
Net AHRI Water Ratings based on piping allowance of 1.15. Consult manufacturer before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.
3
9 3/4
9 3/4
9 3/4
11 3/8
11 3/8
11 3/8
13
13
13
BOILER RATINGS AND CAPACITIES
These low pressure oil fired hot water boilers are constructed and hydrostatically tested for maximum working pressure of 50 psig (pounds per square inch) in accordance with the latest revision of the A.S.M.E.
(American Society of Mechanical Engineers) Boiler and
Pressure Vessel Code Section IV Standards for heating boilers.
Heating Capacity indicates amount of heat available after subtracting losses up the stack. Most of this remaining heat is available to heat water. A small portion is heat from the jacket and boiler surface and it is assumed that this heat stays in the structure. Net AHRI Rating represents portion of remaining heat that can be applied to heat radiation or terminal units (i.e. finned tube baseboard, cast iron radiators, radiant floor, etc.). Difference between
Heating Capacity and Net AHRI Rating, called piping and pickup allowance, establishes reserve for heating volume of water in the system and off-setting heat losses from system piping. Net AHRI Rating of the boiler selected should be greater than or equal to calculated peak heating load (heat loss) for building or area(s) served by the boiler and associated hot water heating systems. Consult manufacturer before selecting boiler for installations having unusual piping and pickup requirements.
Boilers with same number of sections are identical to each other except for their firing rate. Firing rate is determined by nozzle size in oil burner. For example: Models
3KW0.60Z, 3KW0.75Z and 3KW1.00Z are the same boiler, except for firing rate of oil burner.
These boilers operate on #2 Heating Oil. Alternate firing rate kits are available for 3 section, 4 section and 5 section boilers.
4
SAFE INSTALLATION AND OPERATION
Boiler installation shall be completed by qualified agency.
Become familiar with symbols identifying potential hazards.
!
WARNING
Burn and scald hazard. Safety relief valve could discharge steam or hot water during operation.
Install discharge piping per these instructions.
This is the safety alert symbol. Symbol alerts you to potential personal injury hazards. Obey all safety messages following this symbol to avoid possible injury or death.
!
Indicates a hazardous situation which, if not avoided,
WILL result in death or serious injury
!
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
!
DANGER
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Used to address practices not related to personal injury.
1. Failure to follow rules for safe operation and instructions can cause a malfunction of the boiler and result in death, serious bodily injury, and/or property damage.
2. Check your local codes and utility requirements before installation. Installation must be in accordance with their directives, or follow NFPA 31 Installation of Oil
Burning Equipment, latest revision.
3. Before servicing, allow boiler to cool. Shut off any electricity and oil to boiler when working on it.
4. Inspect oil line and connections for leaks.
5. Verify oil burner nozzle is the size required. Over-firing will result in early failure of boiler sections. This will cause dangerous operation.
6. Never vent this boiler into enclosed space. Always vent to outside. Never vent to another room or inside a building.
7. Verify there is adequate air supply for complete combustion.
8. Follow regular service and maintenance schedule for efficient, safe and reliable operation.
9. Keep boiler area clean and free of combustible material, gasoline and other flammable vapors and liquids.
10. Oil burners are not do-it-yourself items. Boiler must be installed and serviced by qualified professionals using combustion test instruments.
5
11. Be aware when piping safety relief valve if system pressure exceeds safe limit of 30 pounds per square inch, safety relief valve will automatically lift open.
Lifting of safety relief valve can discharge large quantities of steam and hot water, which may damage surroundings. Before installing safety relief valve read manufacturer’s instructions and maintenance section of manual on safety relief valves.
12. Installation and sizing of the expansion tank must consider heating systems total water volume, temperature, boiler initial fill pressure, and system arrangement. Improperly installed and sized expansion tank may result in frequent lifting of safety relief valve or other heating system problems. For proper installation, sizing, and maintenance of expansion tank follow guidelines established by boiler manufacturer and expansion tank manufacturer.
13. Expansion tank performance and life expectancy can be hindered by overfilling the boiler. Boiler manufacturer recommends initial fill pressure of 10-12 psig. For higher fill pressures expansion tank’s air charge will need to be increased to match fill pressure. Consult manufacturer’s guidelines for sizing and selection.
14. Purging heating system of air and gases when first placing boiler into service is critical for proper circulation and quiet performance. Once air and gases are purged, for boiler installations using float type vents, air vents should be closed for normal operation.
If air is heard or noticed by loss of heat, purge system and open vents for short period of time.
NOTICE
This boiler has been designed for residential installations. If used for commercial applications, all jurisdictional requirements must be met. This may require wiring and/or piping modifications.
Manufacturer is not responsible for any changes to the original design.
DO NOT USE GASOLINE CRANKCASE DRAININGS
OR ANY OIL CONTAINING GASOLINE.
BEFORE YOU START
BEFORE YOU START
Complete following prior to installing boiler.
A. Verify you have selected right size boiler with proper capacity. AHRI rating of boiler selected should be greater than or equal to calculated peak heating load
(heat loss) for building or area(s) served by boiler and associated hot water heating systems. See boiler rating and capacity table previously listed. Any heat loss calculations used should be based on approved methods.
B. Supply boiler with proper oil supply and oil piping, sufficient fresh combustion air, and suitable electrical supply.
C. Connect boiler to suitable venting system and piping system adequate to distribute heating load.
D. Thermostat must be properly located and installed for control of heating system.
If there are any doubts as to requirements, check with lo cal authorities and obtain professional help where needed.
Operating Instructions, Checks And Adjustments, And
Maintenance sections in this manual are vital to proper and safe operation of heating system. Take time to be sure they are all done.
BOILER LOCATION
1. Place boiler in location centralized with piping system and as close to chimney as possible.
2. Boiler must be level. If necessary use metal shims beneath boiler’s feet.
3. Use raised base if floor can become wet or damp.
4. Maintain clearances for fire safety as well as servicing. Maintain 18” clearance at a side where passage is required for access to another side for cleaning, servicing, inspection, or replacement of any parts that normally may require such attention. Boilers must be installed at least 6” from combustible material on all sides and above. Allow at least 24” front clearance for servicing.
5. Allow fresh air for combustion at front of boiler.
Allow fresh air for ventilation to front and rear of boiler. Air passages must be free of obstructions at all times. Ventilating and combustion air must enter boiler room without restrictions.
!
WARNING
Fire hazard. Do not install boiler on combustible flooring or carpeting. Failure to follow these instructions could result in death or serious injury.
Figure 2 - Clearances
6”
Min.
6. Floor supporting boiler must be noncombustible and sufficiently stable. If flooring is combustible, place boiler on 2” concrete patio blocks or 2” Cladlite
Pad™. Blocks or pad must be under entire boiler to protect floor.
7. Be sure installation is in accordance with the requirements of the local authorities having jurisdiction. Compliance with these regulations is required. In the absence of local codes, follow NFPA
31 Installation of Oil Burning Equipment, latest revision.
MINIMUM CLEARANCE DIMENSIONS
24” Min.
6”
Min.
Boiler
Front
24” Min.
Unit
Top
Right Side
Left Side
Base
BOILER CLEARANCES
Combustible
Clearance
6”
24”
6”
Non-combustible
Accessibility,
Cleaning, and
Servicing
18”
24”
Flue to
Combustible
Clearance
18”
Front
Back
24”
6”
All distances measured from the cabinet of the boiler.
6
Figure 3 - Boiler With Piping System
INSTALLATION REQUIREMENTS
ALWAYS KEEP MANUAL FUEL SUPPLY VALVE SHUT OFF IF
BURNER IS SHUT DOWN FOR EXTENDED PERIOD OF TIME.
7
FRESH AIR FOR COMBUSTION
!
WARNING
Asphyxiation, fire hazard. Do not obstruct air openings to combustion area. Follow instructions below, to maintain adequate combustion air.
NOTICE
Install outside air intake if you use fireplace or kitchen or bathroom exhaust fan. These devices rob boiler and water heater of combustion air.
Provide enough fresh air to assure proper combustion. Fire in the boiler uses oxygen. It must have continuous supply.
Air in the house contains only enough oxygen to supply burner for short time. Outside air must enter house to replace air used by the burner. Study following examples 1 and 2 to determine your fresh air requirements.
EXAMPLE 1: Boiler Located in Unconfined Space
If your boiler is in open area (non partitioned basement) in conventional house, air that leaks through cracks around doors and windows will usually be adequate to provide air for combustion. D oors should not fit tightly. Do not caulk cracks around windows.
Unconfined space is defined as space whose volume is not less than 50 cubic feet per 1,000 Btu per hour of total input rating of all appliances installed in that space.
EXAMPLE 2: Boiler Located in Confined Space
A. All Air from Inside the Building: Confined space shall be provided with two permanent openings communicating directly with additional room(s) of sufficient volume so that combined volume of all spaces meets criteria for unconfined space. Total input of all combustion equipment installed in combined space shall be considered in making this determination. Each opening shall have minimum free area of one square inch per 1,000 Btu per hour of total input rating of all combustion equipment in confined space, but not less than 100 square inches. One opening shall be within 12 inches of top and one within 12 inches of bottom of the enclosure.
Example: Your boiler is rated at 100,000 Btu per hour.
Water heater is rated at 30,000 Btu per hour. Total is 130,000 Btu per hour. You need two grilles, each with 130 square inches of FREE opening. Metal grilles have about 60% FREE opening. To find louvered area needed, multiply free opening required by 1.7 (130 x
1.7 = 221.0 sq. in. louvered area). In this example, two grilles each having 8” x 30” (240 sq. in.) louvered area would be used.
Figure 4 - Air Openings For Boiler Located In
Confined Space (Utility Room
)
8
FRESH AIR FOR COMBUSTION
B. All Air from Outdoors: Confined space shall be provided with two permanent openings, one commencing within 12 inches of top and another commencing within 12 inches of bottom of enclosure. Openings shall communicate directly, or by ducts, with outdoors or spaces
(crawl or attic) that freely communicate with outdoors.
1. When directly communicating with outdoors, each opening shall have minimum free area of one square inch per 4,000 Btu per hour of total input rating of all equipment in the enclosure.
2. When communicating with the outdoors through vertical ducts, each opening shall have a minimum free area of one square inch per 4,000 Btu per hour of total input rating of all equipment in the enclosure.
3. When communicating with outdoors through horizontal ducts, each opening shall have minimum free area of one square inch per 2,000
Btu per hour of total input rating of all equipment in the enclosure.
4. When ducts are used, they shall be of same cross sectional area as free area of openings to which they connect. Minimum dimension of rectangular air ducts shall be not less than three inches.
Figure 5 - Fresh Air Duct Capacities For Ducts Supplying Fresh Air To Boiler In
Tightly Constructed Houses
FRESH AIR DUCT CAPACITIES
THROUGH LOUVERS
Fresh Air
Duct Size
¼” Mesh
Screen
(Btuh)*
3 ½” x 12” 144,000
Wood
Louvers
(Btuh)*
36,000
Metal
Louvers
(Btuh)*
108,000
8” x 8”
8” x 12”
8” x 16”
256,000
384,000
64,000
96,000
192,000
288,000
512,000 128,000 384,000
*Btuh = British Thermal Units per hour based on opening covered by ¼” mesh screen , wood louvers, or metal louvers.
9
SYSTEM PIPING
1. Installation of boiler for new heating system,
Install all of radiation units (panels, radiators, baseboard, or tubing) and supply and return mains first. After all heating system piping and components have been installed, make final connection of system piping to boiler. It is recommended to mount circulating pump on supply side piping, such that it pumps away from expansion tank. Refer to figures on next pages.
2. Equip hot water boiler installed above radiation
level with low water cut off device. Periodic inspection is necessary, as is flushing of float type devices, per low water cut off manufacturer’s specific instructions.
3. Packaged boiler is set up with 1¼” NPT supply and return piping from front of boiler. Boiler supply and return piping can be moved to rear of boiler. Boiler should not be piped return line to front, supply line to rear, or vice versa, will cause boiler water to short circuit heat exchanger. Piping connections may require additional fittings and parts.
4. Install drain valve provided with boiler in return tee.
See figure on page 3.
5. Install Safety Relief valve in rear section using ¾” nipple and street elbow provided with boiler. See figure
6.
A. Install safety relief valve with spindle in vertical position.
B. Do not install shutoff valve between boiler and safety relief valve.
C. Install discharge piping from safety relief valve.
• Use ¾” or larger pipe.
• Use pipe suitable for temperatures of 375°F
(191°C) or greater.
• Individual boiler discharge piping shall be independent of other discharge piping.
• Size and arrange discharge piping to avoid reducing safety relief valve relieving capacity below minimum relief valve capacity stated on rating plate.
• Run pipe as short and straight as possible to location protecting user from scalding and properly drain piping.
• Install union, if used, close to safety relief valve outlet.
• Install elbow(s), if used, close to safety relief valve outlet and downstream of union (if used).
• Terminate pipe with plain end (not threaded).
6. Verify clean cold water supply is available when connecting to pressure reducing valve. Use sand strainer or pump strainer when water supply is from well.
Low Design Water Temperature Systems (Below 140°
F) And Large Water Content Systems
Significant condensation may form in this boiler and/ or venting system if boiler is operated with return temperatures of less than 120° F.
Condensation is corrosive and can eventually cause damage to boiler and venting system. Minimum design return water temperature to prevent this condensation in boiler and venting is 120°F.
Boiler used in heating system where design water temperatures below 140°F are desired (e.g. radiant floor heating), a 3-way or 4-way mixing valve or suitable alternative (e.g. Bypass Piping Arrangement shown in diagram on following page) is required to prevent low temperature (below return 120°F) return water from entering boiler. When using mixing valve, follow manufacturer’s installation instructions.
Boiler connected to system having large water content
(such as former gravity system), use of Bypass Piping
Arrangement shown in diagram on following page is suggested.
Figure 6 - Safety Relief Valve Installation
Follow instructions to install discharge piping from safety relief valve to drain.
10
SYSTEM PIPING
Figure 7 - Bypass Piping Arrangement Diagram
> LOW DESIGN WATER TEMPERATURE
SYSTEMS
> LARGE WATER CONTENT SYSTEMS
> PIPING ARRANGED FOR “POWER
PURGING” AIR OUT OF THE SYSTEM
PIPING, REFER TO THIS MANUAL’S
SECTION ON “FILLING THE SYSTEM
WITH WATER” OPTION #1
11
SYSTEM PIPING
Figure 8 - System Piping Arrangement Zoning With Zone Valves
> CIRCULATOR ON SUPPLY PIPING PUMPS AWAY
FROM EXPANSION TANK
NOTE: CIRCULATOR CAN ALSO BE INSTALLED
ON RETURN PIPING.
> PIPING ARRANGED FOR “POWER PURGING”
AIR OUT OF SYSTEM PIPING, REFER TO THIS
MANUAL’S SECTION ON “FILLING THE SYSTEM
WITH WATER” OPTION #1
12
SYSTEM PIPING
Figure 9 - System Piping Arrangement Zoning With Circulators
> CIRCULATOR ON SUPPLY PIPING PUMPS
AWAY FROM EXPANSION TANK.
NOTE: CIRCULATOR CAN ALSO BE INSTALLED
ON RETURN PIPING.
> PIPING ARRANGED FOR “POWER PURGING”
AIR OUT OF SYSTEM PIPING, REFER TO THIS
MANUAL’S SECTION ON “FILLING THE SYSTEM
WITH WATER” OPTION #1
13
SYSTEM PIPING
Tankless Coil Piping Arrangement
Boilers may be factory packaged with tankless heater
coil see figure below. Coil provides instantaneous heating of water for domestic use if proper burner and water supply line controls are used. Tankless coils are meant to provide domestic hot water for intermittent draws, not continuous flow.
NOTICE
Do not use tankless coil if your water is excessively hard with lime or other deposits which will accumulate inside the coil.
Boiler configured so Honeywell L4006A Low Limit mounts on control well (provided). Mount factory-wired low limit control on tankless coil. Tempering valve (mixing valve) is also recommended as shown in figure below. Flow restrictor may be required on tankless coil inlet piping so flow rates are matched to boiler heat input (see table).
!
DANGER
Water temperatures exceeding 125°F will cause severe burns instantly or death by scalding.
Boiler
Model
3KW0.60C
3KW0.75C
3KW1.00C
4KW.90C
4KW1.25C
4KW1.50C
5KW1.20C
5KW1.75C
5KW2.00C
Burner
Firing
Rate (gph)
0.60
0.75
1.00
0.90
1.25
1.50
1.20
1.75
2.00
Input
(MBH)
84
105
140
126
175
210
168
245
280
Tank less
Rating
(gpm)‡
2.85
3.00
3.25
3.15
3.50
3.75
3.45
4.00
4.25
‡ Gallons of water per minute heated from 40°F to 140°F with
200°F boiler water temperature, intermittent draw
Figure 10 -Tankless Coil Piping Arrangement
14
BOILER WATER VOLUMES
Number of
Boiler Section
3
Total Volume
(Gallons)
9.6
4
5
11.6
13.7
ANTIFREEZE IN THE SYSTEM
Antifreeze must be nontoxic, type specifically intended for use in closed hydronic heating systems. Under no circumstances should automotive antifreeze be used.
Antifreeze used in any boiler may reduce capacity by
10% or more and increase fuel consumption. Tankless coil performance will fall as concentration of antifreeze is increased. Refer to boiler and piping water volumes tables in this manual.
PIPING WATER VOLUMES
PIPE SIZE
COPPER PIPE
FACTOR
STEEL PIPE
FACTOR
½”
¾”
1”
1 ¼”
1 ½”
2”
82.5
40.0
23.3
15.3
10.8
6.2
63.5
36.0
22.2
12.8
9.5
5.8
Divide total length of piping in feet by appropriate factor in table to determine volume in gallons.
CHIMNEY AND CHIMNEY CONNECTIONS
For oil fired boilers for connections to vents or chimneys, vent installations shall be in accordance with applicable provisions of INSTALLATION OF OIL BURNING EQUIPMENT,
NFPA31 latest revision, and applicable provisions of local building codes.
NOTICE
Fresh air (ventilation) is important to proper venting. Ventilation and venting are two parts of the same system. Inadequate ventilation will result in inadequate venting. Always be sure to have enough ventilation to support proper venting.
For additional chimney design and sizing information, consult latest revision of the ASHRAE HVAC Systems and
Applications Handbook, Gas Vent and Fireplace Systems; or the National Standard for Chimneys, Fireplaces, Vents and
Solid Fuel Burning Appliances, ANSI/NFPA 211.
This is a very important part of your heating system. Check your chimney to make certain that it is right size, properly constructed and in sound condition.
Following chart shows recommended minimum chimney sizes.
FIRING RATE
(gph)
0.60 1.30
1.35 1.80
1.85 2.00
RECOMMENDED MINIMUM CHIMNEY SIZES
CHIMNEY
HEIGHT (ft)
15
15
20
NOMINAL
CHIMNEY
8” x 8”
8” x 8”
8” x 8”
ROUND
LINER INSIDE
For elevations above 2,000 feet above sea level, add 3 feet to the chimney heights.
6”
7”
8”
15
SQUARE
LINER INSIDE
6 ¾” x 6 ¾”
6 ¾” x 6 ¾”
6 ¾” x 6 ¾”
CHIMNEY AND CHIMNEY CONNECTIONS
CHIMNEY CONNECTOR AND DRAFT
REGULATOR
Boiler venting requires 6” diameter chimney connector pipe and use of draft regulator packed with boiler. Regulator controls draft automatically. Preferred installation is in horizontal section of pipe, may also install in angled or vertical section of pipe. Verify “top” of regulator is at top and short pipe section which holds vane is horizontal.
Install draft regulator as close as practicable to boiler.
Chimney connector installation, start at boiler with vertical pipe and elbow. Install draft regulator making it horizontal.
Slope horizontal pipe up toward chimney at least 1/4 inch per linear foot of venting. Chimney connector must not leak and must be firmly supported. Join each section with at least two sheet metal screws. Support every second section with stove-pipe wire.
!
WARNING
Fire Hazard. Maintain minimum vent pipe clearance of
18” from surface of vent to wood and other combustible materials. Failure to comply may result in death or serious injury.
TYPICAL CHIMNEY CONNECTION
Figure 11 -Typical Chimney Connection
Minimum Height:
Must be 3 FT higher than highest part of passage through roof.
Must be at least 2 FT higher than any neighboring object within 10 FT.
Must have unobstructed top opening .
MUST BE AT LEAST 4
INCHES THICK -
AND BE TIGHT.
MUST SLOPE UP
AT LEAST 1/4 INCH
PER FOOT OF
HORIZONTAL RUN
DRAWBAND
LAST PIECE
INSTALLED
TIGHT, SMOOTH,
CORRECTLY SIZED.
SEALED IN
THIMBLE
TIGHT
CLEAN-OUT
DOOR
DRAFT REGULATOR
VANE
CRIMPED END
BALANCED WEIGHT
ALTERNATE POSITIONS
TOP
TOP
16
!
WARNING
ELECTRICAL CONNECTIONS
Electrical shock hazard. Turn OFF electrical power sup ply at service panel before making electrical connections.
Failure to do so could result in death or serious injury.
THERMOSTAT
Install 24 V olt thermostat (not provided) in proper location.
Location of thermostat has effect on boiler system operation.
Follow instructions included with thermostat.
GROUNDING
Permanently ground boiler according to local codes and latest revision of the National Electrical Code. Run 14 gauge or heavier copper wire from boiler to grounded connection in service panel or properly driven and electrically grounded ground rod.
ELECTRIC POWER SUPPLY
Installation must comply with the latest revision of the
National Electrical Code, any other national, state, or local codes or regulations.
Connect 115 volt electrical supply to L1 and L2 terminals on limit and two thermostat wires to T and T terminals on same limit. See wiring diagrams, pages 28 & 29.
Run separate circuit from separate over current protection device in your electrical service entrance panel. Minimum
15 ampere circuit. Locate shutoff switch at boiler. Turn off during any maintenance. Solder and tape or securely fasten connections with wire nuts.
OIL BURNER WIRING
For boilers packaged with oil burners, burners are factory wired.
17
!
WARNING
EQUIPMENT AND ACCESSORIES
Burn and scald hazard. Safety relief valve could discharge steam or hot water during operation.
Install discharge piping per these instructions.
RELIEF VALVE (provided)
Each low pressure hot water heating boiler is provided with a safety relief valve for over pressure protection of boiler and heating system. Safety relief valve opens when pressure in boiler rises to 30 psig. Safety relief valve is provided with lifting device for testing and should be tested monthly during heating season. Provide discharge piping from outlet side of safety relief valve to prevent scalding or other hazardous situations. Discharge piping must remain full size and terminate at safe point.
DIAPHRAGM EXPANSION TANK (not provided)
Diaphragm type expansion tank takes the place of conventional expansion tank. Read instructions packed with your tank assembly. Size and correctly install expansion tank, an improperly installed or sized expansion tank may result in frequent lifting of safety relief valve or other heating system problems.
Tank typically comes with 10-12 psig air charge. Same as pressure produced in system by automatic fill valve set to fill boiler to 10-12 psig with fresh water. When system is first filled, tank fills partially with water. As water is heated, and system pressure increases, water expands into tank and compresses air in tank. Compressed air cushion permits system water to expand as temperature changes and assures “full measure” of water, even in highest system radiation.
CONVENTIONAL EXPANSION TANK (not provided)
Size expansion tank correctly an improperly installed or sized expansion tank may result in frequent lifting of safety relief valve or other heating system problems. Install tank higher than top of boiler. Connecting pipe from boiler to expansion tank shall rise continuously up to expansion tank so that air can rise into expansion tank.
Expansion tank is partially filled with air. Air compresses as water expands, thus forming air pressure cushion. This
“spring-like” cushion serves to maintain correct operating water pressure regardless of water temperature. This assures “full measure” of water, even in highest radiation unit of system. Tank also serves as trap for excess air in system. Air causes noises in pipes and inefficient circulation in radiators if left in piping system.
Mount diaphragm type expansion tank on air purger fitting or any other convenient place in supply or return line.
Recommend locating diaphragm type expansion tank in supply line with circulator located after expansion tank.
Configuration allows circulator to “pump away” from expansion tank for improved air elimination and system performance. Air eliminator fitting or air purger is not provided. Use air eliminator fitting or air purger to help remove air from system before it reaches radiators. Install in supply line. Air left in system can cause noises in pipes and inefficient circulation in radiators.
It is possible for a tank to become “waterlogged” (filled with water). It can also become overfilled with air when filling system with new water. Fittings provided on tank and in line to tank are for bleeding off excess air and water.
18
EQUIPMENT AND ACCESSORIES
MAIN AIR VENT: (not provided)
Before filling system with water, there is air in the pipes and radiation units. Some air is trapped as system filled.
Eliminate most of this air through air vents on radiation units. Main air vent speeds and simplifies process. Install main air vent on highest point in supply main.
PIPING section for more information.
DRAIN VALVE (provided)
Drain valve is manually operated valve, provides means of draining all water from boiler and heating system. Install in reducing tee where return line enters boiler.
AUTOMATIC FILL VALVE (not provided)
For safe, efficient operation, fill hot water system with water. Adding new water, when needed can be done manually (by use of hand valve in water supply line).
Requires regular attention to system’s needs. Automatic fill valve or pressure reducing valve accomplishes this without attention. Install in supply line on hot water boilers only.
Valve operates through water pressure differentials. Does not require electrical connection.
BURNER SOLENOID VALVE (provided)
Beckett oil burners use standard solenoid valve. Upon burner shut down, standard solenoid valve stops flow of oil to nozzle. Without solenoid valve, oil pump continues to pump oil to burner nozzle until burner motor winds down below pumps cutoff speed.
CIRCULATOR (provided)
Forced hot water system requires circulator. Separate circulator or zone valve is required for each zone, if there are two or more zones. Circulator must have capacity to provide circulation required by heating system. Connect circulator to supply main and wired into boiler’s electrical system. See
System Piping section for piping configurations with circulator located on supply main piping using zone circulators or zone valves. Piping arranged with zone circulators and no bypass piping, circulator provided with boiler may be used as zone circulator. Both piping arrangements allow circulator to pump away from expansion tank and show how piping should be arranged to allow heating system to be easily purged of air. Circulator can be installed on return side of boiler if preferred.
LIMIT CONTROL (provided) Refer to manufacturer instructions provided with limit control
Water temperature limit control in limit is adjustable and may be set: as low as 140°F, as long as return water temperatures to boiler are no less than 120°F, or as high as 220°F and as long as boiler and heating system have adequate circulation to remove heat from boiler otherwise steam may be created in boiler. Refer back to SYSTEM
Figure 12 - Grundfos Pump
The pump curve for the furnished Grundfos UP 15-42 F pump is shown below:
Model
UP 15-42F
Watts Volts Amps
85 115 0.74
5
15
4
3 10
2
5
1
0
Capacitor
10µF/180V
US GPM
5
1
19
10
2
15 20
3 4 5
FILLING THE BOILER
HOT WATER SYSTEM OPERATION
Entire heating system (boiler, piping, and radiation units) is filled with water. As boiler water boiler is heated, it is circulated from top of boiler through supply main to radiation units. Cooler water in radiation units flows back through return piping through return main into boiler. This arrangement provides positive and rapid response to the thermostat.
FILLING SYSTEM WITH WATER
OPTION #1 Method utilizes boiler piping as shown in figures in the “ System Piping ” section.
OPTION #2 Close air vents on all radiation units.
Open valves to radiation units. Verify boiler drain valve, expansion tank drain cock, and air bleed screw on expansion tank drain fitting are closed. Open fill valve on piping to expansion tank. Open water inlet to boiler and leave open. Open air vent on lowest radiation unit. When all air has escaped and water starts to flow from vent, close it.
Go to next radiation unit, and repeat this process finishing with highest radiation unit. If heating system has automatic vents, manual venting is unnecessary but will speed up proper filling of system.
a) Close main shutoff valve, isolation valves, and zone valves (if applicable). If bypass piping is installed, also close two throttling valves. Leave boiler service shutoff valve (if installed) and balancing valves to each heating zone fully open .
b) Open following valves in order: drain valve for power purging, isolating valves before and after boiler circulator (if applicable), both throttling valves (if applicable), and then open fill line shutoff valve. Water will fill bypass piping and push air through piping and out power purging drain valve.
When power purging drain valve runs air free, close bypass piping throttling valve (leaving throttling valve to supply piping fully open).
If system is closed expansion tank system, automatic fill valve is needed. Leave automatic fill valve open to refill system automatically as needed. Note initial fill pressure on boiler’s temperature/pressure gauge should be 10-15 psig. Any lowering of pressure from its initial fill pressure indicates loss of water due to leakage. Automatic fill valve should compensate for this water pressure loss. If it does not, manually open this valve to refill system until needle is again pointing to same pressure reading. Instructions are packaged with valve.
c) Next, open isolation valve (or zone valve) to first zone.
Water fills piping and pushes any air out power purging drain valve. When power purging drain valve runs air free, close isolation valve (or zone valve). Repeat this procedure for remaining heating zones.
d) Once all zones are filled with water and purged of air, close power purging drain valve and fill line shut off valve, open main shutoff valve, and adjust throttling valves and balancing valves as required.
20
OPERATING THE BOILER
DO NOT TAMPER WITH THE UNIT OR CONTROLS
IMPORTANT: Installer follow these instructions carefully.
STARTING: Fill system with water. Vent all air from system following section “ FILLING THE BOILER” .
FUEL UNITS AND OIL LINES: Install oil line(s) to oil burner. Use heavy wall copper tubing and flared fittings, do not use compression fittings. All connections and joints must be airtight. Use appropriate non-hardening thread sealing compound on threaded connections, not Teflon tape. See fuel unit data sheet furnished with burner for sizing, lift, and length of tubing recommendations.
Original equipment oil burner (when furnished) is equipped with single stage fuel unit with bypass plug removed for single pipe installation. This is satisfactory where fuel supply is on same level as, or above burner, permitting gravity flow of oil. Per NFPA31 requirements, never exceed
3 psig pressure to inlet side of fuel unit. When necessary to lift oil to burner, two-pipe installation is required. Run return line between fuel unit and oil supply. When two-pipe installation is used, bypass plug (furnished with burner) must be installed in fuel unit. Refer to fuel unit instructions furnished with burner for specific instructions on installing bypass plug. Do not exceed fuel unit manufacturer’s recommendations for running vacuum.
DRAFT REGULATORS: Barometric draft regulator is required for controlling draft through boiler. Barometric draft regulator is mounted in chimney connector.
Refer back to section on “CHIMNEY AND CHIMNEY
CONNECTIONS” . Once draft regulator is installed, use draft gauge to adjust to proper opening: combustion chamber over fire draft will be approximately -0.01” WC to
-0.02” WC and stack draft will be approximately -0.02” WC. to -0.04” WC. On larger installation, greater draft may be required in stack to obtain desired over fire draft.
NOZZLES AND ELECTRODES: Use proper size, spray angle, and spray pattern nozzle. Refer to recommended nozzle selection charts at end of this manual. To install nozzle, remove nozzle line electrode assembly, if necessary remove retention ring assembly, and install and tighten nozzle. Take care not to damage electrode insulators or bend electrode tips. After installing nozzle, reassemble nozzle line electrode assembly and set electrode tip spacing. Electrode tip spacing may need to be set prior to reassembling nozzle line electrode assembly. Refer to figures on following pages for setting electrode tip spacing on Beckett.
FINAL BURNER ADJUSTMENTS: Final burner adjustments must be made using combustion test instruments. Initial settings for burner are shown at back of this manual.
NOTE: If lift exceeds 14 feet for Beckett burners, two stage fuel unit is required with return line.
Install oil filter of adequate size inside building between tank shutoff valve and oil burner. For ease of servicing, locate shutoff valve and filter near oil burner.
Set burner accordingly. Check draft over fire to verify it is between -0.01” WC and -0.02” WC, adjust draft as necessary. After operating 10 minutes to warm up boiler, use combustion test equipment to take smoke reading in flue pipe between boiler and draft regulator. Smoke reading should be zero to trace (Shell Bacharach Scale). A new boiler may require more than 10 minutes to burn clean due to oil film on new heat exchanger. If smoke reading is zero, gradually close burner’s air adjustment to obtain smoke reading showing trace smoke reading. Once smoke reading is trace, measure CO
2
and as insurance margin increase air to sufficiently reduce CO
2
by 1/2% to 1%.
AIR SUPPLY FOR COMBUSTION: Do not install boiler in rooms with insufficient air, unless corrective steps are taken. It may be necessary to install windows or cut holes in door to rooms used for supply air to obtain sufficient combustion air and prevent less than atmospheric air pressure in that room. If there is lack of combustion air, burner flame will be dark orange and formation of soot will occur in heating unit. In buildings of conventional frame, brick, or stone construction that do not have utility rooms, basement windows, or stair doors, air infiltration is normally adequate to provide enough air for combustion and for operation of barometric draft control. Room used for supplying combustion air should be isolated from any area served by exhaust fans. Refer back to the section on
“ FRESH AIR FOR COMBUSTION” for additional sizing guidelines.
If clean fire cannot be obtained, it will be necessary to verify burner head and electrode alignment. Proper electrode alignment figures are presented on following pages. If fire continues to be smoky, replace nozzle with correct replacement.
Once burner is completely adjusted, burner should be started and stopped several times to assure good operation with no fluttering or rumbling. Verify there are no oil leaks and record nozzle size, oil pressure, combustion readings, and air settings on tag or label that can be attached to burner or, boiler.
21
OPERATING THE BOILER
Figure 13 - Beckett AFG Burner Electrode
Adjustments Variable (V1, L1) Heads
Boiler
Model
All
Dimension “N”
(electrode to nozzle)
1/16”
Dimension “H”
(head to nozzle)
7/32” - 9/32”
Figure 14 -
Beckett AFG Variable (V1) Head
Adjustments and Settings
Dimension “Z” For L1, V1 Heads
1 ¾”
CHECKING AND ADJUSTING CONTROLS
Instructions for Limit control provided are included with boiler.
ADJUST OPERATING CONTROLS: Use following settings for first adjustment:
High Limit:
IMPORTANT: Installer follow these instructions carefully.
Baseboard and Convectors 180°F
Standing Radiators 180°F
When low limit is used:
• With Honeywell L7248L control, set ELL parameter on
L7248L control to ON.
• With Hydrolevel 3250 control, Set Z-l switch on 3250 control to l position.
Boilers factory equipped with tankless coil are factory set.
Low Limit (when used) 140º ( increase if hotter domestic water is required, but low limit set point must be at least
20°F less than high limit set point ) .
ADJUST THERMOSTAT HEAT ANTICIPATOR PER
LIMIT INSTRUCTIONS.
Do not attempt to start burner when excess oil has accumulated, when unit is full of vapor, or when combustion chamber is very hot.
22
CHECKING AND ADJUSTING CONTROLS
VERIFY THERMOSTAT OPERATION: Thermostat location has important effect on operation of boiler system. Follow instructions included with your thermostat. Thermostat is located typically about five feet above floor on inside wall.
Locate thermostat to sense average room temperature, so avoid the following:
When temperature on thermostat is set above indicated thermostat temperature, boiler’s burner should start.
Verify that once room temperature reaches selected temperature setting, boiler’s burner shuts off, and once room temperature falls few degrees boiler starts operating again. Do not start burner unless all cleanout doors are secured in place.
THERMOSTAT LOCATIONS TO AVOID
DEAD
SPOTS
HOT SPOTS COLD SPOTS
Behind doors
Corners & alcoves
Concealed pipes Concealed pipes
Fireplace or ducts
TV sets
Radios
Stairwells drafts
Doors drafts
Lamps
Direct sunlight
Kitchens
Unheated room on other side of wall
23
ANNUALLY: Recommend flue passages, combustion chamber area (target wall, fire door insulation, durablanket), burner adjustment, operation of controls, and boiler seals (fire door gasket or silicone seal, cast iron sectional seals, flue collector) checked once each year by competent Service Technician. Before start of each heating season (or when system has been shut down for extended periods of time) recheck whole system for water, oil, and vent piping leaks. Replace or patch any leaks or seals that are faulty.
MAINTENANCE
DIAPHRAGM EXPANSION TANK: As noted in
“EQUIPMENT AND ACCESSORIES” section, tank may become water logged. Frequent automatic opening of safety relief valve indicates water logging. High boiler temperature accompanied by unusually low radiation unit temperature (and “knocking” noises) indicates excess air in the tank. To correct this condition, replace diaphragm expansion tank.
WATER SYSTEM: If system is to remain out of service during freezing weather, always drain it completely (water left in the system will freeze and crack pipes and/or boiler).
VENT PIPE: Visually inspect entire venting system once a month for any signs of leakage, deterioration, or soot build up. If vent pipe shows any signs of leaking or deterioration, replace it immediately. If it shows any signs of soot build up, clean vent pipe and have burner settings and combustion checked by competent professional.
TANKLESS COIL (OR COVER PLATE) GASKET: This Check gasket at least twice a year for leakage and replace if necessary. If gasket is replaced, make sure when coil plate
(or cover plate) is reattached the ten nuts are torqued in alternating pattern to ensure equal force is applied to entire gasket creating a good seal.
Torque nuts to 23 ft-lbs so gasket does not squeeze out from behind plate.
SAFETY RELIEF VALVE: Valve should open automatically when system pressure exceeds pressure rating (usually 30 psi) of safety relief valve. Should valve ever fail to open under this condition, shut down the system. Drain system until system pressure is reduced below safety relief valve pressure rating. Contact competent Service Technician to replace valve and inspect heating system and determine cause, this problem may indicate equipment malfunction.
Test safety relief valve monthly during heating season.
Prior to testing, verify discharge pipe is properly connected to valve outlet and arranged to safely dispose of boiler discharge. Hold trip lever fully open for at least five seconds in order to flush free any sediment lodged on valve seat. Permit valve to snap shut. Refer to valve manufacturer’s instructions packaged with valve for more details.
CONVENTIONAL EXPANSION TANK: As noted in
“EQUIPMENT AND ACCESSORIES” section, this tank may become water logged or may receive excess of air.
Frequent automatic opening of safety relief valve indicates water logging. High boiler temperature accompanied by unusually low radiation unit temperature (and “knocking” noises) indicates excess air in the tank. To correct either condition, close valve between boiler and tank. Drain the tank until empty. Check all tank plugs and fittings, tighten as necessary. Open valve between boiler and tank. Water will rise to normal height in tank if system has automatic fill valve, otherwise manually refill system.
OIL BURNER: Oil burner maintenance is listed in this manual under OPERATING THE BOILER .
Never burn garbage or paper in the unit, never leave combustible material around it.
24
OIL BOILER / BURNER CLEANING INSTRUCTIONS
OIL BOILER CLEANING:
1. Shut off all electrical power to boiler / burner and shut off fuel oil supply.
2. Remove vent pipe from boiler top. Inspect pipe and chimney for signs of corrosion and deterioration. Clean out base of chimney. If vent pipe shows any signs of corrosion or deterioration, replace immediately. If chimney damage or deterioration is discovered, contact competent professional.
3. Remove top jacket panel screws (5), brass wing nuts
(2) holding flue collector top, and flue collector top. In spect gasket on underside of flue collector and replace as necessary.
4. Before beginning to clean flue passageways, ensure combustion chamber blanket is covered. If blanket is not covered prior to cleaning, replace blanket once cleaning is completed.
5. With access to flue passageways, remove soot from fireside surfaces by brushing diagonally through flue passages. Brushing is easier by cutting end of flue brush off and inserting into a drill. When brushing, take care not to damage target wall with flue brush. See figure 15.
6. Carefully vacuum soot accumulations from combustion chamber area, be careful not to damage any refractory or blanket insulation. To gain access to combustion chamber first double check the shut off valve on fuel oil line is closed and disconnect fuel oil line. Remove oil burner from fire door. Remove fire door.
7. Inspect target wall, fire door refractory, and combus tion chamber blanket (when included) for cracking and deterioration. If there is signs of cracking or deterioration, replace refractory or blanket before reassembling burner / front plate.
8. Inspect door’s braided gasket for wear and damage.
Replace when necessary with braided gasket of same material and size. See repairs parts manual.
9. Inspect and clean oil burner.
Important operating and maintenance requirements:
• Keep boiler and area around it clean
• Never burn refuse or any material other than specified fuel in your boiler
• Have your boiler checked each year by qualified technician
Figure 15 -
Brush Diagonally Through Flue
Passages
25
OIL BURNER MAINTENANCE AND CLEANING
OIL BURNER MAINTENANCE: For Beckett AFG, following preventative maintenance items should be performed annually, preferably prior to heating season.
1. Fuel Filter Replace to prevent contaminated fuel from reaching nozzle. Partially blocked fuel filter can cause premature failure of fuel pump.
These are general instructions for cleaning an oil burner.
For specifics, consult burner manufacturer’s instructions.
1. Verify all electrical power to boiler / burner and fuel supply to burner are shut off.
2. Fuel Pump Unit Replace pump screen and clean pump unit to maintain fuel delivery to nozzle.
2. With oil burner removed from fire door, clean any soot accumulations from end of burner and if applicable burner head.
3. Ignition Electrodes Clean and adjust as per manufacturer’s recommendations, to maintain reliable ignition of oil.
4. Nozzle Replace to maintain safe and reliable combustion efficiency. Always replace with exact nozzle as required in charts in back of this manual.
3. Remove burner drawer assembly, clean electrodes and reset electrode spark gap per manufacturer’s recommendations. Refer to section on OPERATING
THE BOILER Nozzles and Electrodes.
5. Fan and Blower Housing Keep clean, free of dirt, lint and oil to maintain proper amount of air fuel requires to burn.
4. Replace oil nozzle with same size and type recommended for use on this boiler.
6. Check burner settings and adjust as needed.
5. Install burner drawer assembly making sure head location (and size if applicable) are per manufacturer’s recommendations. If burner being used has damaged head, replace head with same head recommended for use on this boiler.
NOTE: If component parts must be replaced, use parts recommended by burner manufacturer.
6. Inspect and clean oil burner blower wheel.
7. Remove oil pump cover and clean / replace pump screen. Carefully reassemble ensuring pump cover makes proper seal.
8. Securely fasten oil burner to fire door.
9. Replace fuel filter (if applicable).
10. Reconnect electrical and fuel supplies.
11. Fire burner, checking for proper combustion using combustion test equipment and making adjustments as necessary. Refer to section on OPERATING THE
BOILER Final Burner Adjustments.
12. Insure all safety controls and operating controls are functioning properly.
26
SERVICE HINTS
You may avoid inconvenience and service calls by checking these points before you call for service:
IF YOUR SYSTEM IS NOT HEATING OR NOT GIVING ENOUGH HEAT . . .
POSSIBLE CAUSE WHAT TO DO
Thermostat is not set correctly Reset thermostat
Burner is not operating properly
C heck flame. If it is yellow, the burner is not getting enough air.
Or, if flame is blue and noisy and seems to lift off the burner, the burner is getting too much air. Contact your service technician.
No electric power to boiler
Controls out of adjustment
Radiators not heating
Check over-current protection. Check to be sure electric power supply circuit is “ON”.
Reset according to instructions.
Open radiator vents to excess air. Check flow control valve (if used). It may be in closed position.
Check over-current protection. Check relay operation.
Check all control terminals and wire joints.
Circulating pump not running
Poor electrical contact
Chimney flue is blocked Have the chimney professionally cleaned.
Circulator running when boiler water temperature is below low limit set point (tankless coil boilers only)
POSSIBLE CAUSE
Corrosion and/or deposits on seat.
Honeywell L7248L control - confirm ELL parameter on L7248L control set to ON.
Hydrolevel 3250 control - confirm Z-l switch on 3250 control set to l position.
Refer to control instructions furnished with boiler.
RELIEF VALVE LEAKING . . .
WHAT TO DO
Open valve manually. Allow water to run and clear valve seat.
Water logged expansion tank Drain tank, see instructions.
HAVE YOUR SERVICE TECHNICIAN CHECK ANY PROBLEM YOU
ARE UNABLE TO CORRECT.
27
ELECTRICAL WIRING
Figure 16 -
Boiler Honeywell L7248L Control
*
28
ELECTRICAL WIRING
Figure 17 -
Boiler With Hydrolevel 3250 Control
*
29
SEQUENCE OF OPERATION
Sequence of Operation
• Thermostat calls for heat.
• Circulator turns on.
• Limit checks boiler water temperature. Burner ignition delayed until limit determines call for heat cannot be met by residual heat in boiler and heat distribution system.
A. See limit literature for additional information.
B. Burner delay by-passed for tankless heat call for heat. Burner ignition begins immediately.
• Burner and circulator operation continues until thermostat stops call for heat.
30
BECKETT OIL BURNER, NOZZLE, AND AIR SETTING
BOILER
MODEL
3KW0.60*
3KW0.75*
3KW1.00
4KW.90*
4KW1.25
4KW1.50*
5KW1.20*
5KW1.75*
5KW2.00
FIRING
RATE
(GPH)
0.60
0.75
1.00
0.90
1.25
1.50
1.20
1.75
2.00
BURNER
MODEL
AFG50MB
AFG50MB
AFG50MB
AFG50MD
AFG50MD
AFG50MD
AFG50MD
AFG50MD
AFG50MD
HEAD
L1
L1
L1
V1
V1
V1
V1
V1
V1
HEAD
ADJUSTMENT
FIXED
FIXED
FIXED
0
0
2
1
3
4
LOW FIRE
BAFFLE
Yes
Yes
No
No
No
No
No
No
No
* “Alternate Firing Rate K its” are needed in order to achieve these firing rates
** All nozzles are Delavan
AIR
BAND
1
3
1
3
3
0
0
0
0
AIR
SHUTTER
10
10
8
10
10
10
5
4
8
STATIC
PLATE NOZZLE**
3 3/8” 0.60 x 70W
3 3/8” 0.75 x 70B
3 3/8” 1.00 x 70B
2 3/4” 0.75 x 60B
2 3/4” 1.25 x 70B
2 3/4” 1.50 x 60B
2 3/4” 1.20 x 70B
2 3/4” 1.75 x 60B
2 3/4” 2.00 x 60B
PUMP
PRESSURE
(PSI)
100
100
100
140
100
100
100
100
100
NOTE: All burners use insertion depth of 2 ¼” and fired at over-fire draft of 0.02 inches w.c.
Burner settings provided are intended for initial start up only. Final adjustment must be made using combustion test instruments.
31
IMPORTANT
In accordance with Section 325 (f) (3) of the Energy Policy and
Conservation Act, this boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the heating load decreases.
This feature is equipped with an override which is provided primarily to permit the use of an external energy management system that serves the same function.
THIS OVERRIDE MUST NOT BE USED UNLESS AT LEAST ONE OF THE
FOLLOWING CONDITIONS IS TRUE:
• An external energy management system is installed that reduces the boiler water temperature as the heating load decreases.
• This boiler is not used for any space heating
• This boiler is part of a modular or multiple boiler system having a total input of
300,000 BTU/hr or greater.
• This boiler is equipped with a tankless coil.
PENNCO BOILERS
2201 Dwyer Avenue, Utica NY 13501 web site: www.ecrinternational.com
advertisement
Related manuals
advertisement