Lochinvar SNR200-100 用户手册

Do not install the Shield water heater 
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.

Failure to follow all instructions can result 
in flue gas spillage and carbon monoxide 
emissions, causing severe personal injury 
or death.

At the time of removal of an existing water heater, 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.

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. 

 DANGER

 WARNING

       

Installation & Service Manual

TM

Failure to follow all instructions can result 
in flue gas spillage and carbon monoxide 
emissions, causing severe personal injury 
or death.

 WARNING

Check the following venting components before installing:

 

• Material - For materials listed for use with this appliance, 

 

  see Section 2 - General Venting.  For polypropylene  or 

   stainless steel venting, an adapter of the same 
 

  manufacturer must be used at the flue collar connection.

  

• Size - To ensure proper pipe size is in place, see Table 2A.  

    Check to see that this size is used throughout the vent 
  

system.

  

• Manufacturer - For a stainless steel or polypropylene 

 

  application, you must use only the listed manufacturers 

 

  and their type product listed in Tables 2E and 2G for CAT 

   IV positive pressure venting with flue producing 
  

condensate.

  

• Supports - Non-combustible supports must be in place 

    allowing a minimum 1/4" rise per foot.  The supports 
 

  should adequately prevent sagging and vertical slippage, 

    by distributing the vent system weight.  For additional 
   information, consult the vent manufacturer’s 
 

  instructions for installation.

  

• Terminations - Carefully review Sections 2 through 4 to 

 

  ensure requirements for the location of the vent and air 

    terminations are met and orientation of these fit the 
   appropriate image from the Sidewall or Vertical 
    options listed in the General Venting Section.  For 
 

  stainless steel vent, only use terminations listed in Table 

 

  2H for the manufacturer of the installed vent.

  

• Seal - With prior requirements met, the system should be 

 

  tested to the procedure listed in parts (c) through (f) of 

 

  the Removal of an Existing Boiler Section on page 11.

With polypropylene  and stainless steel vent, seal and connect 
all pipe and components as specified by the vent manufacturer 
used; with PVC/CPVC vent, see the Installing Vent or Air 
Piping Section on page 20.

 WARNING

If any of these conditions are not met, 
the existing system must be updated 
or replaced for that concern. Failure to 
follow all instructions can result in flue gas 
spillage and carbon monoxide emissions, 
causing severe personal injury or death.