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Lochinvar Crest FBN2001 User Manual

Lochinvar Crest FBN2001
68 pages
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This manual must only be used by
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.
WARNING
Save this manual for future reference.
FBII-I-O_100208043_2000004587 Rev E
Installation & Operation Manual
Models: 751 - 2001

Table of Contents

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Lochinvar Crest FBN2001 Specifications

General IconGeneral
ModelFBN2001
TypeCondensing Boiler
EfficiencyUp to 96.2%
Fuel TypeNatural Gas
Weight1330 lbs
Water Connection Size3 inch

Summary

Please Read Before Proceeding

When Servicing Boiler

Safety precautions for servicing the boiler, including electrical disconnect and cooling.

Boiler Operation

Important safety guidelines for operating the boiler, including air flow and overheating.

Boiler Water

Guidance on boiler water system, including sediment and water quality.

Freeze Protection Fluids

Recommendations for using appropriate freeze protection fluids.

Determine Boiler Location

Vent and Air Piping

Requirements for routing and terminating vent and air piping.

Prevent Combustion Air Contamination

Instructions to avoid contamination of combustion air supply.

Combustion and ventilation air requirements from the equipment room

Requirements for combustion and ventilation air from the equipment room.

General Venting

Direct venting

Overview of direct venting configurations for the boiler.

Optional room air

Configuration for using room air for combustion.

Install vent and combustion air piping

Instructions for installing vent and combustion air piping.

Vent and air piping

General requirements for vent and air piping.

Air contamination

Information on preventing contamination of combustion air.

Installing vent and air piping

Instructions for installing vent and air piping with PVC/CPVC.

Vertical Direct Venting

Vent/air termination – vertical

Guidelines for vertical vent and air termination.

Sidewall Direct Venting

Vent/air termination – sidewall

Guidelines for sidewall vent and air termination.

Room air

Configuration for using room air for combustion and venting.

Hydronic Piping

Circulator sizing

Guidance on sizing circulators for the system.

Near boiler piping components

Components for near-boiler hydronic piping installations.

Gas Connections

Gas supply

General requirements and recommendations for gas supply.

Connecting gas supply piping

Steps for connecting gas supply piping to the boiler.

Natural gas

Specific instructions for natural gas connections.

Pipe sizing for natural gas

Guidelines for sizing natural gas piping.

Natural gas supply pressure requirements

Required supply pressure for natural gas.

Propane Gas

Specific instructions for propane gas connections.

Field Wiring

Low voltage connections

Instructions for making low voltage electrical connections.

Condensate Disposal

Start-up

Operating Information

Protection features

Boiler's safety protection features.

Low water cutoff protection

Safety feature to prevent operation without water.

Flow sensing device

How the boiler senses and responds to flow conditions.

Freeze protection

Boiler's internal freeze protection features.

Boiler temperature regulation

How the boiler regulates its operating temperature.

Operating temperature (target)

Setting and understanding the target operating temperature.

High limit operations

How high limit safety features operate.

Cascade

Information on configuring and operating multiple boilers in cascade.

Sequence of operation

Step-by-step sequence of boiler operation during a call for heat.

SMART TOUCH w/Crest CON•X•US Interface (CCI)

Overview of the SMART TOUCH interface and its sections.

Maintenance

Maintenance and annual startup

Schedules and procedures for boiler maintenance and startup.

Check all piping for leaks

Inspecting all piping for leaks and addressing them.

Check boiler relief valve

Inspecting and testing the boiler relief valve.

Perform start-up and checks

Performing startup checks and tests.

Check burner flame

Inspecting the burner flame for satisfactory operation.

Cleaning boiler heat exchanger

Procedure for cleaning the boiler heat exchanger.

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