Lochinvar 751 - 2001 사용자 설명서

        

Installation & Operation Manual

•  Local, state, provincial, and national codes, laws, 

regulations, and ordinances.

•   National Fuel Gas Code, NFPA 54 / ANSI Z223.1 – 

latest edition.

•  Standard for Controls and Safety Devices for 

Automatically Fired Boilers, ANSI/ASME CSD-1 - 
latest edition, when required.

•   National Electrical Code, NFPA 70 - latest edition.
•   For Canada only:  CSA B149.1 Installation Code, 

CSA C22.1 Canadian Electrical Code Part 1 and any 
local codes.

 WARNING This appliance is certified as an indoor appliance.  Do 

not install the appliance outdoors or locate where the 
appliance will be exposed to freezing temperatures or 
to temperatures that exceed 100°F (37.8°C).
Do not install the appliance where the relative humidity 
may exceed 93%.  Do not install the appliance where 
condensation may form on the inside or outside of 
the appliance, or where condensation may fall onto 
the appliance.

Failure to install the appliance indoors could result in 
severe personal injury, death, or substantial property 
damage.

The Crest gas manifold and 
controls met safe lighting and other 
performance criteria when the boiler 
underwent tests specified in ANSI 
Z21.13/CSA 4.9 – latest edition.

1.  Check for nearby connection to:

• System water piping
• Venting connections
• Gas supply piping
• Electrical power

2.  Locate the appliance so that if water connections 
 

should leak, water damage will not occur.  When 

  such locations cannot be avoided, it is 
 

recommended that a suitable drain pan, adequately 

 

drained, be installed under the appliance.  The 

 

pan must not restrict combustion air flow.  Under no 

 

circumstances is the manufacturer to be held 

 

responsible for water damage in connection with 

 

this appliance, or any of its components.

3.  Check area around the boiler.  Remove any 
  combustible materials, gasoline and other 
 flammable 

liquids.

This appliance requires a special venting system. 
Use only the vent materials specified in this manual. 
Failure to follow all instructions can result in flue gas 
spillage and carbon monoxide emissions, causing 
severe personal injury or death.  

 WARNING

Failure to keep boiler area clear 
and free of combustible materials, 
gasoline, and other flammable 
liquids and vapors can result in 
severe personal injury, death, or 
substantial property damage.

4.  The Crest must be installed so that gas control 

system components are protected from dripping or 
spraying water or rain during operation or service.

5.  If a new boiler will replace an existing boiler, check 

for and correct system problems, such as:

• System leaks causing oxygen corrosion or heat 

exchanger cracks from hard water deposits.

• Incorrectly-sized expansion tank.
• Lack of freeze protection in boiler water causing 

system and boiler to freeze and leak.

6.  The appliance must be installed on a level floor, 
 

both front to back and side to side, for proper 

 condensate 

drainage.

7.  If the optional neutralizing kit is to be used, elevate 
 

the boiler at least 3" above the floor.

 -   Hot water pipes ...........................................................  1/4"
 -   Sides ..............................................................................  0"
 -   Rear ...............................................................................  0"
 -   Front .............................................................................  0"
 -   Top ................................................................................  0"
 -   Floor ........................................................... Combustible
-   Vent pipe - Follow special vent system manufacturer’s instructions

 WARNING

VENTILATING*
AIR OPENING  

VENTILATING*  

CLOSED DOOR

FLOOR: COMBUSTIBLE

IMG01027

  0"

FRONT

0"

RIGHT

  0"
TOP

VENT PIPE:
FOLLOW SPECIAL VENT SYSTEM
MANUFACTURER'S INSTRUCTIONS

1" (25 MM) MINIMUM CLEARANCE
AROUND HOT WATER PIPES

    0"
REAR

   0"
LEFT

8. 

Check around the boiler for any potential air contaminants 
that could risk corrosion to the boiler or the boiler combustion 
air supply (see Table 1A on page 9).  Prevent combustion air 
contamination.  Remove any of these contaminants from the boiler 
area.

DO NOT install units in rooms or environments that 
contain corrosive contaminants (see Table 1A on page 
9).  Failure to comply could result in severe personal 
injury, death, or substantial property damage.

 WARNING