Installation guide

FIGURE 7 i Removing NOx Baffles
or
25-22-46a
7. Remove the orifices from the manifold with a 7/t6" box
end or socket wrench.
8. Check to be sure that the size of each orifice is correct
for the Btu input desired.
FIGURE 8 Manifold/Orifice Measurement
_lpi°l_e°rifiee
9. Install the correct orifices. Gauge the size ofthe orifices
with a new twist drill bit of the correct size.
Make sure that the orifices go in straight so that they
form a right angle (90 °) to the manifold pipe.
Tighten the orifices so that there is a 13/16" distance
between the faces of the orifices to the back of the
manifold pipe.
Measure the distance with a set of calipers. Ifyou do not
have a calipers, you can use an adjustable wrench and
measure between the face of the jaws.
1O. Reassemble in reverse order.
6. ELECTRICAL WIRING
ELECTRICAL SHOCK HAZARD.
Failure to follow this warning could result in personal
injury, death, and/or property damage.
The unit cabinet must have an uninterrupted,
unbroken electrical ground to minimize the possibility
of serious injury if an electrical fault should occur.
This ground may consist of an electrical wire
connected to the unit ground lug in the control
compartment, or conduit approved for electrical
ground when installed in accordance with National
Electric Code (NEC) NFPA 70, National Fuel Gas Code
NFPA 54-2005/ANSI Z223.1-2005 and local electrical
codes. In Canada, follow Canadian Electrical Code
CSA (Canadian Standards Association) C22.1 and
local electrical codes.
REDUCED EQUIPMENT LIFE HAZARD
Failure to follow these cautions could result in damage
to the unit being installed.
1) Make all electrical connections in accordance with
National Electric code (NEC) NFPa 70, National Fuel Gas
Code NFPA 54-2005/ANSI Z223.1-2005 and local
electrical codes governing such wiring. In Canada, all
electrical connections must be in accordance with CSA
standard C22.1, Canadian Electrical Code Part 1, and
applicable local codes. Refer to unit wiring diagram.
2) Use only copper conductor for connections between
field-supplied electrical disconnect switch and unit. DO
NOT USE ALUMINUM WIRE.
3) Be sure that high-voltage power to unit is within
operating voltage range indicated on unit rating plate.
4) Do not damage internal components when drilling
through any panel to mount electrical hardware,
conduit, etc. Consult local power company for
correction of improper voltage and/or phase imbalance.
For access, remove the burner access panel. See Figure
for access panel location. Wiring MUST be protected from
possible mechanical damage.
Disconnect Switch
The unit must have separate electrical service with a
field-supplied, waterproof, disconnect switch mounted at,
orwithin sight from, the unit. Refer tothe unit rating plate for
maximum fuse/circuit breaker size and minimum circuit
amps (ampacity) for wire sizing.
Ground Connections
Do NOT complete line voltage connections until unit is
permanently grounded. All line voltage connections and the
ground connection MUST be made with copper wire.
A ground lug is installed in the control box area for the
ground connection. Use a copper conductor of the
appropriate size from the unit to a grounded connection in
the electrical service panel or a properly driven and
electrically grounded ground rod. See warning above.