Specifications

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SECTION IV – PRE START-UP
Pre Start-Up
The owner’s representative or equipment operator
should be present during start-up to receive instructions
on care and adjustments of the equipment.
All equipment has been factory tested, adjusted, me-
tered and inspected to meet conditions set at the time
the order was placed. Only minimal adjustments should
be required. All information in this service manual is
typical. All products are semi-custom and changes may
occur. The following procedures should be preformed to
assure the unit has not been damaged or misaligned
during shipping.
Note: All servicing and adjustments to the Indirect
Gas Fired unit should be preformed by a qualified
service engineer.
Caution: Line side of disconnect switch may be
energized.
Perform a visual inspection internally and externally of
the unit to make sure no damage has occurred, and
everything is secure.
Remove all shipping blocks, brackets, and bolts from
bases on units with optional isolation base. Check that
system ductwork (if applicable) is installed properly and
free from obstructions. Check to make sure all fans,
props, and blowers turn freely in their housing. Check all
wiring for loose connections and tighten if necessary.
Inspect all fan and motor bearings and lubricate if nec-
essary. Optional extended lube lines are shipped filled
from the factory.
Inspect sheaves and belts for tightness, tension and
alignment. Do not over tighten belts. Inspect setscrews
on bearings and fans for tightness.
Caution: OVER GREASING BEARINGS WILL
RUPTURE GREASE SEALS
Before starting up this equipment, study and familiarize
yourself with the wiring diagram, sequence of operation,
flame safeguard, control components, gas train, and
burner.
Check any dampers or mixing boxes (if supplied). Make
certain that all damper linkage is free to move and no
binding will occur. If dampers are of the modulating
type, check control capillary tubes to insure that the
tubes and bulbs are in the proper location and will not
rub against any other parts.
Check to make sure all vent lines (if applicable) are run
to atmosphere on gas regulators and pressure
switches. Vent lines should terminate outside the build-
ing, with a turndown elbow and bug screen. Vent limit-
ers may be used which do not require vent lines to be
run. If vent lines are even partially plugged, this will
interfere with the proper venting of pressure control
valves.
Check to make sure all filters, accessories, and ship
loose items are installed correctly.
Check to make sure the flue stack is installed properly
and free from obstruction. Check to be sure that the
induced draft damper is approximately 75% open.
Check all thermostats for normal operation.
Check to make sure all manual reset safety devices
have been reset, and limits are in their normal operating
position.
Check to make sure all doors and inspection panels are
secured or closed.
Remove shipping screw from rear relief door (if appli-
cable).
Check all gas piping for leaks using a soap bubble
solution. The most common types of problems found
relative to the gas train itself is foreign material within
the gas piping. This will interfere with the proper opera-
tion of the gas train components and burner. Purge all
air from gas lines per gas codes.
Check that all manual gas valves are closed.
Caution: Do not attempt to start the burner when
furnace is full of vapor or combustion chamber is
very hot.
Caution: At no time should you stand in front of the
relief door.
Connect test instruments, thermometers, and meters
on the furnace and controls to measure and record the
appropriate data.