Options/Accessories - York J10ZJ Instruction Manual

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A 1/8-inch NPT plugged tapping, accessible for test gage

connection, must be installed immediately upstream of the

gas supply connection to the unit.

After the gas connections have been completed, open the

main shut-off valve admitting normal gas pressure to the

mains. Check all joints for leaks with soap solution or other

material suitable for the purpose. NEVER USE A FLAME.

FIRE OR EXPLOSION HAZARD

Failure to follow the safety warning exactly could result

in serious injury, death or property damage.

Never test for gas leaks with an open flame. use a

commercially available soap solution made specifically

for the detection of leaks to check all connections. A fire

or explosion may result causing property damage,

personal injury or loss of life.

The furnace and its individual shut-off valve must be

disconnected from the gas supply piping system during

any pressure testing at pressures in excess of 1/2 PSIG.

Pressures greater than 1/2 PSIG will cause gas valve

damage resulting in a hazardous condition. If it is

subjected to a pressure greater than 1/2 PSIG, the gas

valve must be replaced.

The furnace must be isolated from the gas supply piping

system by closing its individual manual shut-off valve

during any pressure testing of the gas supply piping

system at test pressures equal to or less than 1/2 PSIG.

Threaded joints should be coated with a sealing

compound that is resistant to the action of liquefied

petroleum gases. Do not use Teflon tape.

Lp Units, Tanks And Piping

All gas heat units are shipped from the factory equipped for

natural gas use only. The unit may be converted in the field for

use with LP gas with accessory kit model number 1NP0442.

All LP gas equipment must conform to the safety standards of

the National Fire Protection Association.

For satisfactory operation, LP gas pressure must be 10.5 inch

W.C. at the unit under full load. Maintaining proper gas

pressure depends on three main factors:

The vaporization rate which depends on the temperature of

the liquid and the "wetted surface" area of the container(s).

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The proper pressure regulation. (Two-stage regulation is

recommended).

The pressure drop in the lines between regulators and

between the second stage regulator and the appliance.

Pipe size required will depend on the length of the pipe run

and the total load of all appliances.

Complete information regarding tank sizing for vaporization,

recommended regulator settings, and pipe sizing is available

from most regulator manufacturers and LP gas suppliers.

LP gas is an excellent solvent and will quickly dissolve

white lead and most standard commercial compounds. A

special pipe dope must be used when assembling

wrought iron or steel pipe for LP. Shellac base

compounds such as Gaskolac or Stalastic, and

compounds such as Rectorseal #5, Clyde's, or John

Crane may be used.

Check all connections for leaks when piping is completed using

a soap solution. NEVER USE A FLAME.

FIRE OR EXPLOSION HAZARD

Failure to follow the safety warning exactly could result

in serious injury, death or property damage.

Never test for gas leaks with an open flame. use a

commercially available soap solution made specifically

for the detection of leaks to check all connections. A fire

or explosion may result causing property damage,

personal injury or loss of life.

Vent And Combustion Air

Venting slots in the heating compartment access panel remove

the need for a combustion air hood. The gas heat flue exhaust

is routed through factory installed exhaust piping with screen. If

necessary, a flue exhaust extension may be installed at the

point of installation.