Table of Contents
Advertisement
This manual is intended only for use by a qualified heating installer/technician. Read and follow this manual, all supplements and related
instructional information provided with the boiler. Install, start and service the boiler only in the sequence and methods given in these
instructions. Failure to do so can result in severe personal injury, death or substantial property damage.
Do not use the boiler during construction. Construction dust and particulate, particularly drywall dust, will cause contamination of
the burner, resulting in possible severe personal injury, death or substantial property damage. The boiler can only be operated with a dust-
free air supply. Follow the instruction manual procedures to duct air to the boiler air intake. If the boiler has been contaminated by operation
with contaminated air, follow the instruction manual guidelines to clean, repair or replace the boiler if necessary.
Affix these instructions near to the boiler/water heater. Instruct the building owner to retain the instructions for future use by a qualified
service technician, and to follow all guidelines in the User's Information Manual.
GBX
Gas-fired residental boilers
Gas-fired residental boilers
Models 70-195
Models 70-195
Boiler manual
Boiler manual
Installation and
Installation and
operation instructions
operation instructions
GBXIOM-1
00-GBXIOM
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Smith GBX 70
Summary of Contents for Smith GBX 70
- Page 1 GBXIOM-1 00-GBXIOM Gas-fired residental boilers Gas-fired residental boilers Models 70-195 Models 70-195 Boiler manual Boiler manual Installation and Installation and operation instructions operation instructions This manual is intended only for use by a qualified heating installer/technician. Read and follow this manual, all supplements and related instructional information provided with the boiler.
-
Page 2: Table Of Contents
INSTALLATION AND OPERATING INSTRUCTIONS MAINTENANCE TABLE OF CONTENTS A. GENERAL ........31 B. -
Page 3: Preinstallation
INSTALLATION AND OPERATING INSTRUCTIONS PREINSTALLATION 1. PREINSTALLATION Read carefully, study these instructions before beginning work. This boiler must be installed by a qualified contractor. The boiler warranty can be voided if the boiler is not installed, maintained and serviced correctly. NOTICE The equipment must be installed in accordance with those installation requirements of the authority having jurisdiction or, in the absence of such requirements, to the current edition of the National Fuel Gas Code , ANSI... -
Page 4: Installation And Operating Instructions
INSTALLATION AND OPERATING INSTRUCTIONS where: = Input of appliances other than fan other assisted in Btu/hr ACH = air change per hour (percent of the volume of the space exchanged per hour, expressed as a decimal) For fan assisted appliances, calculate the required volume of air using the following equation: 15 ft Required Volume... - Page 5 INSTALLATION AND OPERATING INSTRUCTIONS Figure 1.4: Air Openings – All Air from Outdoors through Vertical Ducts Figure 1.6: Air Openings – All Air from Outdoors through One Opening ii. Where communicating with the outdoors through horizontal ducts, each opening shall 5.
-
Page 6: Planning The Layout
INSTALLATION AND OPERATING INSTRUCTIONS c. Each of the appliances served shall be 9. Combustion Air Ducts interlocked to the mechanical air supply to prevent main burner operation when the a. Ducts shall be constructed of galvanized steel or mechanical air supply system is not in operation. an equivalent corrosion-resistant material. -
Page 7: Water Piping And Controls
INSTALLATION AND OPERATING INSTRUCTIONS 3. WATER PIPING AND CONTROLS 3. Supply Piping: A. BOILER SUPPLY AND RETURN Pipe the supply to the 1-1/2 NPT supply tapping at the top and rear of the boiler. 1. Size the supply and return to suit the system. A typical piping arrangement is shown in Figure 3.1. -
Page 8: Safety Relief Valve
INSTALLATION AND OPERATING INSTRUCTIONS 6. Install this boiler so that the gas ignition system components are protected from water (dripping, spraying, etc.) during appliance operation and service (circulator replacement, condensate trap, control replacements, etc.). 7. If this boiler and distribution system is used in conjunction with a refrigeration system, pipe the chilled medium in parallel with the boiler and install the proper valve to prevent the chilled medium from... -
Page 9: Piping For Zoned Systems
INSTALLATION AND OPERATING INSTRUCTIONS C. PIPING FOR ZONED SYSTEMS 1. See Figures 3.5 and 3.6 for basic zoned system 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. -
Page 10: Expansion Tank
INSTALLATION AND OPERATING INSTRUCTIONS D. EXPANSION TANK FREEZE PROTECTION For new or existing systems that must be freeze- 1. Consult the tank manufacturer’s instructions for protected: specific information relating to tank installation. Size the expansion tank for the required system volume WARNING and capacity. -
Page 11: Venting
INSTALLATION AND OPERATING INSTRUCTIONS 4. VENTING A. INTEGRAL DRAFT HOOD 1. The boiler is equipped with a built-in draft hood. This device is designed to: a. provide for the ready escape of flue gases from the boiler in the event of no draft. b. -
Page 12: Vent Piping And Chimney
INSTALLATION AND OPERATING INSTRUCTIONS Figure 4.3: Venting with Vent Damper in Horizontal Position b. Visually inspect the venting system for proper size C. VENT PIPING AND CHIMNEY and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion and other 1. -
Page 13: Gas Piping
INSTALLATION AND OPERATING INSTRUCTIONS 5. GAS PIPING 1. Size and install the gas supply piping properly in order to provide a supply of gas sufficient to meet the maximum demand without undue loss of pressure between the meter and the boiler. 2. - Page 14 INSTALLATION AND OPERATING INSTRUCTIONS Table 5.1: Boiler – Natural Gas Input Size Cubic Feet / Hour Cubic Meters / Hour Table 5.2: Boiler – LP Gas Input Size Cubic Feet / Hour Cubic Meters / Hour Table 5.3: Pipe Capacity Capacity of pipe of different diameters and lengths in cubic feet per hour [cubic meter per hour] with a pressure drop of 0.3 inches of water (75 Pa) and specific gravity of 0.60.
-
Page 15: Electrical
INSTALLATION AND OPERATING INSTRUCTIONS 6. ELECTRICAL Install all electrical wiring in accordance with the National Electrical Code and local requirements. NOTICE This unit when installed must be electrically grounded in accordance with the requirements of the authority having jurisdiction or, in the absence of such requirements, with the current edition of the National Electrical Code , ANSI/NFPA 70 and/or the Canadian Electrical Code , Part 1 CSA C22.1, Electrical Code. -
Page 16: Sequence Of Operation
INSTALLATION AND OPERATING INSTRUCTIONS Figure 6.2: Wiring and Connection Diagram – Standing Pilot (Continuous Ignition) Pilot flame is monitored through the pilot D. SEQUENCE OF OPERATION thermocouple. If pilot flame is lost during a call for heat, main and pilot gas flow will be shut off. 1. - Page 17 INSTALLATION AND OPERATING INSTRUCTIONS Figure 6.3: Wiring and Connection Diagram – Intermittent Ignition the blocked vent switch is closed, and 2. Intermittent Ignition (see Figure 6.3 above) ● the flame rollout switch is closed. ● a. The vent damper is continuously powered. On a call for heat, limit relay R is energized, which c.
- Page 18 INSTALLATION AND OPERATING INSTRUCTIONS Figure 6.4: Intermittent Ignition System Operating Sequence...
- Page 19 INSTALLATION AND OPERATING INSTRUCTIONS Figure 6.5: Zone Wiring with Zone Valves Figure 6.6: Zone Wiring with Circulators...
-
Page 20: Start-Up Procedures
INSTALLATION AND OPERATING INSTRUCTIONS 7. START-UP PROCEDURES 8. Connect a manometer to the gas valve on the valve A. COMPLETING THE INSTALLATION outlet (gas manifold). Use the 1/8 NPT tapping provided. 1. Confirm that all water, gas and electricity are turned off. - Page 21 INSTALLATION AND OPERATING INSTRUCTIONS Figure 7.1: Gas Valve, Manifold 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...
- Page 22 INSTALLATION AND OPERATING INSTRUCTIONS Figure 7.4: Operating Instructions...
-
Page 23: Lighting Instructions
INSTALLATION AND OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. A. This appliance has a pilot which must be lighted by If you cannot reach your gas supplier, call the fire hand. -
Page 24: Control Descriptions
INSTALLATION AND OPERATING INSTRUCTIONS 4. When adjustment is complete, turn off boiler, gas B. CONTROL DESCRIPTIONS flow and electricity to boiler. Remove manometer See Figure 6.1 in Section 6 (Electrical) for locations of connection from valve and plug tapping with plug these devices. -
Page 25: Checking Burner Input
INSTALLATION AND OPERATING INSTRUCTIONS Table 7.1b: Meter Conversion – Natural Gas E. CHECKING BURNER INPUT (SI Metric Units) 1. Refer to rating label mounted on the jacket top panel Burner inputs in kW for for various meter timings and to obtain the rated BTU per hour input. In no case heat values. - Page 26 INSTALLATION AND OPERATING INSTRUCTIONS b. Intermittent Ignition System: 5. Check the expansion tank and automatic fill valve (if used) to confirm that they are operating correctly. If i) Turn gas supply off. either of these components causes high pressure in the system, the boiler relief valve will weep or open, ii) Set thermostat or controller above room allowing fresh water to enter the system.
-
Page 27: Troubleshooting
INSTALLATION AND OPERATING INSTRUCTIONS 8. TROUBLESHOOTING DANGER A. SHUT-DOWN CAUSED BY PILOT OUTAGE, BLOCKED VENT SHUT-OFF When servicing or replacing items that communicate SWITCH OR FLAME ROLL-OUT SAFETY with the boiler water, be certain that: SHUT-OFF SWITCH There is no pressure on the boiler. ●... - Page 28 INSTALLATION AND OPERATING INSTRUCTIONS Table 8.1: Boiler Troubleshooting Guide PROBLEM POSSIBLE CAUSES CORRECTIVE ACTIONS Burners not functioning. 1. No power. 1. Check line voltage wiring and fuses. 2. Limit (Aquastat) not working. 2. Check wiring and contacts, relay, temperature setting. Clean and adjust as necessary. 3.
- Page 29 INSTALLATION AND OPERATING INSTRUCTIONS Figure 8.1: Intermittent Ignition System Troubleshooting Sequence...
-
Page 30: Maintenance
INSTALLATION AND OPERATING INSTRUCTIONS 9. MAINTENANCE WARNING Product Safety Information Refractory Ceramic Fiber Product This appliance contains materials made from refractory ceramic fibers (RCF). Airborne RCF, when inhaled, have been classified by the International Agency for Research on Cancer (IARC), as a possible carcinogen to humans. After the RCF materials have been exposed to temperatures above 1800°F (980°C), they can change into crystalline silica, which has been classified by the IARC as carcinogenic to humans. -
Page 31: General
INSTALLATION AND OPERATING INSTRUCTIONS 4. Check for water leaks in boiler and system piping. A. GENERAL 5. Smell around the appliance area for gas. If you smell 1. Disconnect this boiler from the gas supply piping gas, follow the procedure listed in the during any pressure testing of the gas system. -
Page 32: Annually (Before Start Of Heating Season)
INSTALLATION AND OPERATING INSTRUCTIONS E. ANNUALLY (BEFORE START OF HEATING SEASON) DANGER When servicing or replacing components, be absolutely certain that the following conditions are met: Water, gas and electricity are off. ● The boiler is at room temperature. ● There is no pressure in the boiler. -
Page 33: Boiler Dimensions & Ratings
INSTALLATION AND OPERATING INSTRUCTIONS 10. BOILER DIMENSIONS & RATINGS Figure 10.1:Boiler Views Table 10.1: Boiler Dimensions BOILER DIMENSIONS Jacket Left of Jacket to Rear of Jacket to Vent Connector Boiler Width Depth To Floor c/l of Vent “D” c/l of Vent “E” Size “F”... -
Page 34: Repair Parts
INSTALLATION AND OPERATING INSTRUCTIONS 11. REPAIR PARTS REPAIR PARTS Repair parts are available from your installer or by contacting manufacturer. Use the figures and tables on pages 34-39 to assist in ordering parts. Note: Remember to include boiler model number and serial number when ordering parts. Figure 11.1: Base/Combustible Floor Pan Table 11.1: Base/Combustible Floor Pan Item... -
Page 35: Manifold/Gas Train
INSTALLATION AND OPERATING INSTRUCTIONS Figure 11.2:Manifold Table 11.2: Manifold/Gas Train (Standing Pilot) Item Part Selection Description Information Steel Burner Specify quantity 51537 51537 51537 51537 51537 Steel Burner w/ Pilot Clip 1 per boiler 51263 51263 51263 51263 51263 Gas Manifold 50978 50979 50980 50981 50954 Natural Gas, 0-2000 ft. - Page 36 INSTALLATION AND OPERATING INSTRUCTIONS Figure 11.3a: Gas Valve and Pilot – Standing Pilot Figure 11.3b: Gas Valve and Pilot – Intermittent (Continuous Ignition) Ignition Table 11.3a: Manifold/Gas Train (Intermittent Ignition) Item Part Selection Description Information Steel Burner Specify quantity 51537 51537 51537 51537 51537 Steel Burner w/ Pilot Clip 1 per boiler 51539 51539 51539 51539 51539...
-
Page 37: Block/Draft Hood
INSTALLATION AND OPERATING INSTRUCTIONS Figure 11.4:Block/Draft Hood Table 11.4a: Block/Draft Hood Item Part Selection Description Information Block Assembly 90419 90420 90421 90422 90423 Flue Collector/Draft Hood 90510 90511 90512 90513 90514 Flue Collector Blanket Seal Specify length 50866 50866 50866 50866 50866... -
Page 38: Jacket
INSTALLATION AND OPERATING INSTRUCTIONS Figure 11.5:Jacket Table 11.5: Jacket Item Part Selection Description Information Jacket Assembly Complete jacket* with 90445 90446 90447 90448 90449 insulation and screws *Complete Jacket Consists of: Left Side Panel Right Side Panel Rear Panel Top Upper Front Panel Inner Front Baffle Panel Removable Front Panel... -
Page 39: Controls/Circulator/Vent Damper
INSTALLATION AND OPERATING INSTRUCTIONS Figure 11.6:Controls/Circulator/Vent Damper Table 11.6: Controls/Circulator/Vent Damper Item Description ″ Well* Honeywell L8148E1182 Limit w/ 51689 51689 51689 51689 51689 Temperature-Pressure Gauge 51324 51324 51324 51324 51324 Safety Relief Valve, 30 psi*, Conbraco 10-408-05 50501 50501 50501 50501 50501... - Page 40 WESTCAST, INC. 260 NORTH ELM STREET • WESTFIELD, MA 01085 TEL. (413) 562-9631 FAX (413) 562-3799 www.smithboiler.com...
Need help?
Do you have a question about the GBX 70 and is the answer not in the manual?
Questions and answers