Empire DV-25-2SG Инструкции по установке и руководство пользователя - Страница 6

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Gas Supply
Check all local codes for requirements, especially for the size and type
of gas supply line required. On Natural gas lines less than 15' (4.58m)
long, use 1/2" (13mm) pipe; on longer runs, use 3/4" (19mm) iron pipe
or equal. On LP gas lines please consult LP gas supplier.
Installing a New Main Gas Cock
Each appliance should have its own manual gas cock.
A manual main gas cock should be located in the vicinity of the unit.
Where none exists, or where its size or location is not adequate, contact
your local authorized installer for installation or relocation.
Compounds used on threaded joints of gas piping shall be resistant to the
action of liquefied petroleum gases. The gas lines must be checked for
leaks by the installer. This should be done with a soap solution watching
for bubbles on all exposed connections, and if unexposed, a pressure test
should be made.
Never use an exposed flame to check for leaks. Appliance must be
disconnected from piping at inlet of control valve and pipe capped or
plugged for pressure test. Never pressure test with appliance
connected; control valve will sustain damage!
A gas valve and ground joint union should be installed in the gas line
upstream of the gas control to aid in servicing. It is required by the
National Fuel Gas Code that a drip line be installed near the gas inlet. This
should consist of a vertical length of pipe tee connected into the gas line
that is capped on the bottom in which condensation and foreign particles
may collect.
GAS SUPPLY PIPNG
MANUAL SHUT-OFF VALVE
GAS SUPPLY
INLET
1/8" (3mm) NPT
PLUGGED HOLE
FOR TEST GAGE
Figure 4
Method of Installing a Tee Fitting Sediment Trap
The use of the following gas connectors is recommended:
— ANS Z21.24 Appliance Connectors of Corrugated Metal Tubing
and Fittings
— ANS Z21.45 Assembled Flexible Appliance Connectors of Other
Than All-Metal Construction
The above connectors may be used if acceptable by the authority having
jurisdiction.
Pressure Testing of the Gas Supply System
1. To check the inlet pressure to the gas valve, a 1/8" (3mm) N.P.T.
plugged tapping, accessible for test gauge connection, must be placed
immediately upstream of the gas supply connection to the appliance.
2. The appliance and its individual shutoff valve must be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
3. The appliance must be isolated from the gas supply piping system by
closing its individual manual shutoff valve during any pressure
testing of the gas supply piping system at test pressures equal to or less
than 1/2 psig (3.5 kPa).
Attention! If one of the procedures results in pressures in excess of 1/2
psig (14" w.c.) (3.5 kPa) on the appliance gas valve, it will result in a
hazardous condition.
Page 6
1/8" (3mm) NPT
PLUGGED HOLE
FOR TEST GAGE
GAS
VALVE
GROUND JOINT UNION
3" (76mm) MIN.
Checking Manifold Pressure
Both Propane and Natural gas valves have a built-in pressure regulator in
the gas valve. Natural gas models will have a manifold pressure of
approximately 4.0" w.c. (.996kPa) at the valve outlet with the inlet
pressure to the valve from a minimum of 6.0" w.c. (1.494kPa) for the
purpose of input adjustment to a maximum of 7.0" w.c. (1.743kPa)
Propane gas models will have a manifold pressure approximately 10.0"
w.c. (2.49kPa) at the valve outlet with the inlet pressure to the valve from
a minimum of 11.0" w.c. (2.739kPa) for the purpose of input adjustment
to a maximum of 13.0" w.c. (3.237kPa).
A 1/8" (3mm) N.P.T. plugged tapping, accessible for test gauge connection,
is located on the outlet side of the gas control.
High Altitudes
For altitudes/elevations above 2,000 feet (610m), input ratings should
be reduced at the rate of 4 percent for each 1,000 (305m) feet above sea
level. Canadian High Altitudes for locations having an elevation
above mean sea level between 2,000 feet (610m) and 4,500 feet (1370m),
the manifold pressure is to be decreased from 4.0" w.c. (.996kPa) to 3.2"
w.c. (.796kPa) for Natural Gas and from 10.0" w.c. (2.49kPa) to 8.0"
w.c. (1.992kPa) for Propane Gas.
Piezo Pilot Ignitor Instructions
Depressing the red button completely causes a spark to occur at the pilot.
This is a substitute for a match which requires opening the pilot hole
cover.
To light the pilot, it is important that the electrode be 1/8" (3mm) from
the thermopile. The spark must occur at the point the burner flame hits
the thermopile. The end of the electrode will be red hot with the pilot on.
On a new installation with air in the gas line, it is suggested that a match
be used. The match will light the pilot faster than the piezo under this
condition.
Primary Air Adjustment (Figure 5)
An air adjustment bolt is located on the chamber support bottom. The
four inch (102mm) clearance between the furnace and the floor allows
access to the air adjustment bolt. The air adjustment bolt is above the
rectangular opening on the inner casing bottom.
On Propane gas, if a whistling noise (resonation) occurs, screw air
adjustment bolt into the chamber support in order to reduce the amount
of primary air.
If the whistling noise (resonation) is not eliminated
when the air adjustment bolt is screwed into the chamber support this
may indicate the air adjustment bolt is misaligned. Grasp air adjustment
bolt and pivot (push) air adjustment bolt away from yourself. Observe
the main burner flame as you push air adjustment bolt and when the main
burner flame begins to develop a yellow flame, you should stop pushing
on the air adjustment bolt. Screw air adjustment bolt out of the chamber
support until the yellow flame on the main burner is eliminated. The air
adjustment bolt should now be properly aligned.
primary air will soften the main burner flame and will eliminate the
whistling noise (resonation).
On Propane or Natural gas, if a yellow flame occurs, screw air
adjustment bolt out of the chamber support but do not completely
remove air adjustment bolt from chamber support. The repositioning of
the air adjustment bolt will increase the amount of primary air. The
increase in primary air will sharpen the main burner flame and will
eliminate the yellow flame.
AIR BOLT
The reduction in
4" (102mm)
FLOOR
Figure 5
R-2070