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FB-I-O Rev I
Installation & Operation Manual
Models: 1.5 - 2.0 - 2.5 - 3.0 - 3.5
This manual must only be used by
WARNING
a qualified heating installer / service
technician. Read all instructions,
including this manual and the Crest
Service Manual, before installing.
Perform steps in the order given.
Failure to comply could result in
severe personal injury, death, or
substantial property damage.
Save this manual for future reference.
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Contents HAZARD DEFINITIONS .................................................... 2 5. HYDRONIC PIPING PLEASE READ BEFORE PROCEEDING ........................ 3 System Water Piping Methods ......................................... 24 THE CREST -- HOW IT WORKS ................................... 4-5 Low Water Cutoff Device ................................................. 24 RATINGS ........................................................................... 6 Chilled Water System .................
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Installation & Operation Manual Please read before proceeding Installer – Read all instructions, including When servicing boiler – WARNING this manual and the Crest Service Manual, � To avoid electric shock, disconnect electrical supply before installing. Perform steps in the before performing maintenance. order given. User – This manual is for use only � To avoid severe burns, allow boiler to cool before by a qualified heating installer/ performing maintenance. service technic
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Installation & Operation Manual The Crest - How it works... 19. High limit devices (primary and backup) 1. Front access panels The high limit devices are used to monitor the outlet water Provides access to the controls compartment. temperature - if either device senses the water temperature 2. Top access panel exceeding the predetermined setting, the boiler will shut down. Provides access to the burner compartment. 20. Ignition electrode 3. Air pressure switch An electrical spa
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Installation & Operation Manual The Crest - How it works... (continued) Models 1.5 - 2.0 - 2.5 - 3.0 - 3.5 2 39 29 11 7 10 19 36 1 6 5 35 9 Front View Rear View 18 15 16 34 23 19 37 3 25 29 21 33 26 22 12 13 34 28 30 31 20 12 27 17 4 14 Right Side (inside unit) 32 5 Left Side (inside unit)
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Installation & Operation Manual Ratings Crest Other Specifications AHRI Rating Net Vent Weight AHRI Model Number Input Gross Appliance Size w/Water Pipe Pipe Air Ratings MBH Output Water Gas Inlet (lbs.) Size Size Size MBH Water, Content Size Note: Change “N” to Outlet Inlet MBH (Note 4) Gallons “L” for L.P. gas models. (Note 1) (Note 3) (Note 2) Min Max FB(N,L)1500 60 1500 1380 1200 96 4" 4" 1 1/2" 7" 7" 2500 FB(N,L)2000 80 2000 1840 1600 132 4" 4" 1 1/
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Installation & Operation Manual 1 Determine boiler location This appliance is certified as an indoor appliance. Installation must comply with: WARNING Do not install the appliance outdoors or locate � Local, state, provincial, and national codes, laws, where the appliance will be exposed to freezing regulations, and ordinances. temperatures or to temperatures that exceed 100°F � National Fuel Gas Code, NFPA 54 / ANSI Z223.1 – (37.8°C). latest edition. Do not install the applia
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Installation & Operation Manual 1 Determine boiler location Provide air openings to room: Vent and air piping The Crest requires a special gas vent system, designed for The Crest alone in boiler room pressurized venting. 1. No air ventilation openings into the boiler room are The boiler is to be used for either direct vent installation or needed when clearances around the Crest are at least for installation using indoor combustion air. When room air equal to the SERVICE clearanc
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Installation & Operation Manual 1 Determine boiler location (continued) When using an existing vent system to Table 1A Corrosive Contaminants and Sources install a new boiler: Failure to follow all instructions can result Products to avoid: WARNING in flue gas spillage and carbon monoxide Spray cans containing chloro/fluorocarbons emissions, causing severe personal injury Permanent wave solutions or death. Chlorinated waxes/cleaners Check the following venting components before ins
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Installation & Operation Manual 1 Determine boiler location When removing a boiler from existing common vent system: Do not install the Crest into a common d. Place in operation the appliance being inspected. DANGER vent with any other appliance except Follow the lighting instructions. Adjust thermostat so as noted in Section 2 on page 18. appliance will operate continuously. This will cause flue gas spillage or e. Test for spillage at the draft hood relief opening after ap
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Installation & Operation Manual 1 Determine boiler location (continued) Remove boiler from wood pallet Figure 1-3 Boiler Removed from Shipping Pallet 1. After removing the outer shipping crate and plastic from the boiler, remove the parts package (packaged parts inside the controls compartment of the boiler inside the lower front access panel). 2. To remove the boiler from the pallet: REMOVE MIDDLE a. Remove the three (3) shipping bolts located inside TOP COVER the controls compa
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Installation & Operation Manual 1 Determine boiler location Combustion and ventilation air requirements for appliances drawing air from the equipment room Provisions for combustion and ventilation air must be in accordance with Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, NFPA 54 / ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the l
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Installation & Operation Manual 1 Determine boiler location (continued) Under no circumstances should the 4. If a single combustion air opening is provided to bring CAUTION equipment room ever be under negative combustion air in directly from the outdoors, the pressure. Particular care should be taken opening must be sized based on a minimum free area 2 where exhaust fans, attic fans, clothes dryers, of one square inch per 3000 Btu/hr (7 cm per kW). This compressors, air
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Installation & Operation Manual 2 General venting Direct venting Sidewall Vertical Vent, Sidewall Air Vertical Optional room air Sidewall Vertical 14
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Installation & Operation Manual 2 General venting (continued) Install vent and combustion air piping The Crest must be vented and supplied Sealing of Type “B” double-wall vent material or galvanized DANGER with combustion and ventilation air as vent pipe material used for air inlet piping on a sidewall or described in this section. Ensure the vent vertical rooftop Combustion Air Supply System: and air piping and the combustion air a. Seal all joints and seams of the air inlet p
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Installation & Operation Manual 2 General venting When a sidewall or vertical rooftop combustion air supply Air intake/vent connections system is disconnected for any reason, the air inlet pipe must 1. Combustion Air Intake Connector (FIG. 2-1) - Used to be resealed to ensure that combustion air will be free of provide combustion air directly to the unit from outdoors. contaminants and supplied in proper volume. A fitting is provided with the unit for final connection. Failur
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Installation & Operation Manual 2 General venting (continued) Table 2B Direct Vent Minimum / Maximum Allowable Air / Vent Lengths AIR INLET VENT Input Model De-Rate per Air Intake Air Intake Air Intake Vent Vent Vent 25 feet of Vent Diameter Min. Length Max. Length Diameter Min. Length Max. Length FB 1500 7" 12' 100' 7" 12' 100' 2% FB 2000 8" 12' 100' 8" 12' 100' 2% FB 2500 8" 12' 100' 9" 12' 100' 2% FB 3000 10" 12' 100' 10" 12' 100' 2% FB 3500 10" 12' 100' 10" 12' 100' 2% Table
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Installation & Operation Manual 2 General venting Common venting Table 2D Flue Damper Kits Crest boilers may be common vented; however, the following criteria MUST BE followed: Flue Damper Kits 1. Only Crest boilers may be connected to the common vent. DO NOT mix other manufacturer’s appliances or Model Damper Size Kit Number other Lochinvar models. FB1500 7" DRH30000 2. Crest boilers connected to the common vent must all be FB2000 8" DRH30001 of the same size. FB2500 9" DRH30002 3.
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Installation & Operation Manual 3 Vertical direct venting Vent/air termination – vertical Follow instructions below when determining WARNING Figure 3-2 Vertical Termination of Air and Vent w/Rain vent location to avoid possibility of severe Cap personal injury, death or substantial property damage. Do not connect any other appliance to the WARNING vent pipe or multiple boilers to a common BIRD SCREEN [TYPICAL] vent pipe except as noted in Section 2 on page 18. Failure t
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Installation & Operation Manual 3 Vertical direct venting 3. The vent piping must terminate in an up-turned coupling Figure 3-4 Alternate Vertical Terminations with Multiple as shown in FIG. 3-1. The top of the coupling or the Boilers rain cap must be at least 36" (914 mm) above the air intake. The air inlet pipe and vent pipe can be located in any desired position on the roof, but must always be no further than 2 feet (.6 m) apart and with the vent termination at least 36"
