Burnham 1100-H4 ユーザーズマニュアル

Vent Guidelines Due to Removal of an Existing

Boiler

For installations not involving the replacement of an

existing boiler, proceed to Step B.

When an existing boiler is removed from a common

venting system, the common venting system is likely

to be too large for proper venting of the remaining

appliances. 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:
1. Seal any unused openings in the common venting

system.

2. Visually inspect the venting system for proper

size and horizontal pitch and determine there is no

blockage or restriction, leakage, corrosion, and other

deficiencies which could cause an unsafe condition.

3. 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.

4. Place in operation the appliance being inspected.

Follow the Lighting (or Operating) Instructions.

Adjust thermostat so appliance will operate

continuously.

5. Test for spillage at the draft hood relief opening

after five (5) minutes of main burner operation. Use

the flame of a match or candle, or smoke from a

cigarette, cigar or pipe.

6. After it has been determined that each appliance

remaining connected to the common venting system

properly vents when tested as outlined above, return

doors, windows, exhaust fans, fireplace dampers and

any other gas burning appliance to their previous

conditions of use.

7. Any improper operation of the common venting

system should be corrected so the installation

conforms with the National Fuel Gas Code, NFPA

54/ANSI Z223.1. 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 II in the National Fuel Gas Code, NFPA 54/

ANSI Z223.1.

General Guidelines
1. Vent system installation must be in accordance

with National Fuel Gas Code, NFPA 54/ANSI

Z221.3 or applicable provisions of local building

codes. Contact local building or fire officials about

restrictions and installation inspection in your area.

2. The SCG is designed to be installed as either

a Direct Vent boiler or Power Vent boiler. In

the Direct Vent configuration all of the air for

combustion is supplied directly to the burner

enclosure from outdoors and flue gases are vented

directly outdoors (through wall or roof). In the

Power Vent configuration, room air provides air

for combustion and ventilation. Flue gases are still

vented directly outdoors (through wall or roof).

Note: Venting requirements change if indoor air is

used.

3. Refer to the appropriate drawings in this section of

this manual to determine the proper configuration of

venting system. See Table 1.

4. This appliance requires a Special Gas Vent. The

product is designed to use Burnham supplied

AL 29-4C

Stainless Steel vent system components.

The following manufacturers offer similar

AL 29-4C

components and are approved for use

with this product. Heat-Fab Inc. - Saf-T-Vent (800-

772-0739); Flex-L International Inc. - Star-34 (800-

561-1980); Z-Flex U. S., Inc. - Z-Vent (800-654-

5600); and Protech Systems, Inc.- FasNSeal™ (800-

766-3473) or equivalent. The use of these alternate

manufacturer’s venting systems will require

adapters to connect to the Burnham supplied vent

connector and vent terminal. These adapters are not

supplied with this unit and should be obtained from

the supplier of the alternate manufacturer’s venting

system. See Table 3 for complete list of Burnham

Vent System Components.

5. Horizontal vent pipe must maintain a minimum ¼

inch per foot slope down towards boiler.

6. Use noncombustible ¾ inch pipe strap to support

horizontal runs and maintain vent location and

slope while preventing sags in pipe. Do not restrict

thermal expansion or movement of vent system.

Maximum support spacing is five (5) feet. Do not

penetrate any part of the vent system with fasteners.

7. Vent length restrictions are based on equivalent

length of vent/air pipe (total length of straight

pipe plus equivalent length of fittings). Maximum

vent/air lengths are listed in Table 4. Do not exceed

maximum vent/air intake lengths. Table 3 lists

equivalent lengths for fittings. Do not include vent/

air terminals in equivalent feet calculations.

8. Provide and maintain vent pipe minimum clearances

to combustible materials. Vent pipe minimum

clearance to combustible material is four (4) inches

when vent is installed in a fully enclosed (chase)

application or three (3) inches when vent is installed