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6

c. Each of the appliances served shall be

interlocked to the mechanical air supply to
prevent main burner operation when the
mechanical air supply system is not in operation.

d. In buildings where the combustion air is provided

by the mechanical ventilation system, the system
shall provide the specified combustion air rate in
addition to the required ventilation air.

8. Louvers & Grills:

a. The required size of openings for combustion,

ventilation, and dilution air shall be based on the
net free area of each opening.

i.

Where the free area through a louver or grille
is known, it shall be used in calculating the
opening size required to provide the free area
specified.

ii. Where the free area through a louver or grille

is not known, it shall be assumed that wooden
louvers will have 25% free area and metal
louvers and grilles will have 75% free area.

iii. Nonmotorized dampers shall be fixed in the

open position.

b. Motorized dampers shall be interlocked with the

equipment so that they are proven in the full
open position prior to ignition and during
operation of the main burner.

i.

The interlock shall prevent the main burner
from igniting if the damper fails to open
during burner startup.

ii. The interlock shall shut down the burner if

the damper closes during burner operation. 

9. Combustion Air Ducts

a. Ducts shall be constructed of galvanized steel or

an equivalent corrosion-resistant material.

b. Ducts shall terminate in an unobstructed space,

allowing free movement of combustion air to the
appliances.

c. Ducts shall serve a single space.

d. Ducts shall not serve both upper and lower

combustion air openings where both such
openings are used. The separation between ducts
serving upper and lower combustion air
openings shall be maintained to the source of
combustion air.

e. Ducts shall not be screened where terminating in

an attic space.

f.

Horizontal upper combustion air ducts shall not
slope downward toward the source of the
combustion air.

g. The remaining space surrounding a chimney

liner, gas vent, special gas vent, or plastic piping
installed within a masonry, metal, or factory built
chimney shall not be used to supply combustion
air.

h. Combustion air intake openings located on the

exterior of buildings shall have the lowest side of
the combustion air intake opening at least 12
inches (305 mm) above grade.

D. PLANNING THE LAYOUT

Prepare sketches and notes of the layout to minimize the
possibility of interferences with new or existing
equipment, piping, venting and wiring.

Liquefied Petroleum (LP) is heavier than air and may
collect or “pool” in a low area in the event of a leak
from defective equipment. This gas may then ignite,
resulting in a fire or explosion. 

WARNING

INSTALLATION AND OPERATING INSTRUCTIONS

1. Provide a sound, level foundation. Locate boiler as

near to the chimney or outside wall as possible and
centralized with respect to the heating system.

2. Locate boiler in front of installation position before 

removing crate.

3. If using combustible floor pan, position pan on

foundation or flooring.

4. Separate the wood shipping pallet from the boiler

base by removing two (2) hold-down bolts at each
end of the boiler base.

5. Move boiler into final position. If using combustible

floor pan, install boiler on pan as outlined in the
instructions included with the pan.

2. BOILER SET-UP

Содержание GBX 105

Страница 1: ...y drywall dust will cause contamination of theburner resultinginpossibleseverepersonalinjury deathorsubstantialpropertydamage Theboilercanonlybeoperatedwithadust free air supply Follow the instruction...

Страница 2: ...WEEKLY WITH BOILER IN USE 31 D MONTHLY WITH BOILER IN USE 31 E ANNUALLY BEFORE START OF HEATING SEASON 32 10 BOILER DIMENSIONS RATINGS 33 11 REPAIR PARTS 34 A BASE COMBUSTIBLE FLOOR PAN 34 B MANIFOLD...

Страница 3: ...e is known to be between 0 6 and 0 4 air changes per hour If the air infiltration rate is known to be below 0 4 then the Known Air Infiltration Rate Method must be used If the building in which this a...

Страница 4: ...tional spaces that have a total minimum free area of 2 in2 per 1000 Btu hr 44 cm2 per 1000 W of total input rating of all equipment See Figure 1 2 for an illustration of this arrangement 4 Outdoor Com...

Страница 5: ...oor air provided a The size and location of the indoor openings comply with Subsection 3 b The outdoor openings are to be located in accordance with Subsection 4 c The size of the outdoor openings are...

Страница 6: ...s shall not serve both upper and lower combustion air openings where both such openings are used The separation between ducts serving upper and lower combustion air openings shall be maintained to the...

Страница 7: ...ection Pipe the return to the tee Pipe the drain valve nipples and tee to the 1 1 4 NPT return tapping as shown in Figure 3 1 3 Supply Piping Pipe the supply to the 1 1 2 NPT supply tapping at the top...

Страница 8: ...oiler water during the cooling cycle 9 If this boiler is installed above radiation level provide a low water cutoff device either as a part of the boiler or at the time of boiler installation B SAFETY...

Страница 9: ...layouts 2 Run each zone pipe down then up to zone to prevent air accumulation in piping 3 If required provide means to isolate and drain each zone separately INSTALLATION AND OPERATING INSTRUCTIONS Fi...

Страница 10: ...EZE PROTECTION For new or existing systems that must be freeze protected 1 Glycol in hydronic applications is specially formulated for this purpose It includes inhibitors which prevent the glycol from...

Страница 11: ...in vent piping close to the boiler See the Vent Damper Installation Instructions below B VENT DAMPER INSTALLATION GENERAL 1 Do not use one vent damper to control two or more heating appliances See Fi...

Страница 12: ...tch and determine there is no blockage or restriction leakage corrosion and other deficiencies which could cause an unsafe condition c Insofar as is practical close all building doors and windows and...

Страница 13: ...location is shown in Figure 5 1 7 Check piping for leaks Use an approved gas detector a non corrosive leak detection fluid or other leak detection method If leaks are found turn off all gas flow and r...

Страница 14: ...42 1 2 140 56 1 6 175 70 2 0 195 78 2 2 Pipe Length in Feet Meters 3 4 Pipe 1 Pipe 1 1 4 Pipe 1 1 2 Pipe 10 3 0 278 7 9 520 14 7 1050 29 7 1600 45 3 20 6 1 190 5 4 350 9 9 730 20 7 1100 31 1 30 9 1 1...

Страница 15: ...controls 3 This boiler is supplied with safety devices in addition to the limit For a description of these devices and how they work to ensure the safe operation of the boiler see Section 7B 4 If the...

Страница 16: ...h is closed and the flame rollout switch is closed Pilot flame is monitored through the pilot thermocouple If pilot flame is lost during a call for heat main and pilot gas flow will be shut off The va...

Страница 17: ...opens the vent damper b Once the damper is proven open the ignition circuit within the gas valve energizes provided that all of the following conditions are met the blocked vent switch is closed and...

Страница 18: ...18 Figure 6 4 Intermittent Ignition System Operating Sequence INSTALLATION AND OPERATING INSTRUCTIONS...

Страница 19: ...19 INSTALLATION AND OPERATING INSTRUCTIONS Figure 6 5 Zone Wiring with Zone Valves Figure 6 6 Zone Wiring with Circulators...

Страница 20: ...hout the system for leaks If leaks are found drain the system and repair as required 8 Connect a manometer to the gas valve on the valve outlet gas manifold Use the 1 8 NPT tapping provided 9 Confirm...

Страница 21: ...fold and Burner Assembly Standing Pilot Continuous Ignition Figure 7 2 Gas Valve Manifold and Burner Assembly Intermittent Ignition Figure 7 3 Valve Tapping and Adjustment Screw Locations INSTALLATION...

Страница 22: ...22 INSTALLATION AND OPERATING INSTRUCTIONS Figure 7 4 Operating Instructions...

Страница 23: ...URN OFF GAS TO APPLIANCE 8 Find pilot follow metal tube from gas valve The pilot is between two burner tubes Pilot Burner 9 Turn the gas control knob counterclockwise to PILOT 10 Push in red reset but...

Страница 24: ...decrease pressure clockwise to increase pressure Refer to Figure 7 3 for location of gas pressure regulator Replace the cap screw when adjustment is complete 3 In no case should the final manifold pr...

Страница 25: ...s previous setting 2 To check operation of the ignition system safety shut off features a Standing Pilot i Turn the gas control knob counterclockwise to PILOT The main burner should go out and the pil...

Страница 26: ...ough oxygen corrosion pitting 5 Check the expansion tank and automatic fill valve if used to confirm that they are operating correctly If either of these components causes high pressure in the system...

Страница 27: ...must follow all applicable codes and regulations in repair of any boiler problems INSTALLATION AND OPERATING INSTRUCTIONS 8 TROUBLESHOOTING Should overheating occur or the gas supply fail to shut off...

Страница 28: ...upply ventilation and venting system 1 Insufficient pilot flame 2 Pilot burner orifice clogged 3 Overfiring 4 Misaligned burners or pilot 5 Draft problem in boiler room Delayed ignition 1 Increase pil...

Страница 29: ...29 Figure 8 1 Intermittent Ignition System Troubleshooting Sequence INSTALLATION AND OPERATING INSTRUCTIONS...

Страница 30: ...ry Measures Provide adequate ventilation Wear a NIOSH MSHA approved respirator Wear long sleeved loose fitting clothing and gloves to prevent skin contact Wear eye goggles Minimize airborne dust prior...

Страница 31: ...hould never be higher than 5 psi 35 kPa below the rating shown on the safety relief valve 25 psig 172 kPa maximum for a 30 psig 207 kPa rating 45 psig 310 kPa maximum for a 50 psig 345 kPa rating The...

Страница 32: ...n makes a tight seal to prevent leakage of the products of combustion h Re install the top of the jacket vent damper and vent pipe i Re install burners 2 Inspect entire venting system for corrosion su...

Страница 33: ...h mm inch mm inch mm inch mm inch mm inch mm 70 121 2 318 265 8 676 313 8 797 61 4 159 2013 16 529 5 127 105 157 8 403 265 8 676 313 8 797 711 16 195 2013 16 529 5 127 140 191 4 489 265 8 676 313 8 79...

Страница 34: ...ordering parts 11 REPAIR PARTS Table 11 1 Base Combustible Floor Pan 1 2 3 4 Base Assembly Observation Cover Door Base Blanket Seal Combustible Floor Pan Assembly Item No Description 7800 51771 50867...

Страница 35: ...94 50894 Orifice Spud 49 Natural Gas 0 2000 ft 0 610 m elevation specify qty 50895 Orifice Spud 56 LP Gas 0 2000 ft 0 610 m elevation specify qty 50899 50899 50899 50899 Orifice Spud 57 LP Gas 0 2000...

Страница 36: ...m elevation specify qty 50894 50894 50894 50894 Orifice Spud 49 Natural Gas 0 2000 ft 0 610 m elevation specify qty 50895 Orifice Spud 56 LP Gas 0 2000 ft 0 610 m elevation specify qty 50899 50899 508...

Страница 37: ...1 4a Block Draft Hood 12 13 14 Block Assembly Flue Collector Draft Hood Flue Collector Blanket Seal Item No Description 90419 90510 50866 90423 90514 50866 90422 90513 50866 90421 90512 50866 90420 90...

Страница 38: ...n Part Selection Information 70 105 140 175 195 16 Jacket Assembly Complete jacket with insulation and screws 90445 90446 90447 90448 90449 16 16 16 16 16 16 Complete Jacket Consists of Left Side Pane...

Страница 39: ...ge 51324 51324 51324 51324 51324 25 Safety Relief Valve 30 psi Conbraco 10 408 05 50501 50501 50501 50501 50501 Safety Relief Valve 50 psi Watts 350 99950 99950 99950 99950 99950 26 Flame Roll Out Saf...

Страница 40: ...WESTCAST INC 260 NORTH ELM STREET WESTFIELD MA 01085 TEL 413 562 9631 FAX 413 562 3799 www smithboiler com...

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