Lochinvar KNIGHT 399 User Manual download pdf (Page 12)

Installation & Operation Manual

1 Determine boiler location

When removing a boiler from existing

common vent system:

Do not install the Knight XL into a

common vent with any other appliance.

This will cause flue gas spillage or

appliance malfunction, resulting in

possible severe personal injury, death, or

substantial property damage.

At the time of removal of an existing boiler, the following

steps shall be followed with each appliance remaining

connected to the common venting system placed in

operation, while the other appliances remaining connected to

the common venting system are not in operation.

a. Seal any unused openings in the common venting system.

b. Visually inspect the venting system for proper size and

horizontal pitch and determine there is no blockage or

restriction, leakage, corrosion, or other deficiencies,

which could cause an unsafe condition.

c. Test vent system – Insofar as is practical, close all building

doors and windows and all doors between the space in

which the appliances remaining connected to the

common venting system are located and other spaces of

the building. Turn on clothes dryers and any appliance

not connected to the common venting system. Turn on

any exhaust fans, such as range hoods and bathroom

exhausts, so they will operate at maximum speed. Do not

operate a summer exhaust fan. Close fireplace dampers.

d. Place in operation the appliance being inspected. Follow

the lighting instructions. Adjust thermostat so appliance

will operate continuously.

e. Test for spillage at the draft hood relief opening after

5 minutes of main burner operation. Use the flame of a

match or candle, or smoke from a cigarette, cigar, or pipe.

f. After it has been determined that each appliance

remaining connected to the common venting system

properly vents when tested as outlined herein, return

doors, windows, exhaust fans, fireplace dampers, and any

other gas-burning appliance to their previous conditions

of use.

 DANGER

g. Any improper operation of the common venting

system should be corrected so the installation

conforms with the National Fuel Gas Code, ANSI

Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural

Gas and Propane Installation Code. When resizing any

portion of the common venting system, the common

venting system should be resized to approach the

minimum size as determined using the appropriate

tables in Part 11 of the National Fuel Gas Code, ANSI

Z223.1/NFPA and/or CAN/CSA B149.1, Natural Gas

and Propane Installation Code.

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Lochinvar KNIGHT 399 User Manual Page 12

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