© The Fulton Companies 2016
4-6
MAINTENANCE VTG-IOM-2016-1214 SECTION 4
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
4 CAUTION
All maintenance procedures should
be completed by trained personnel.
Appropriate training and instructions
are available from the Fulton Service
Department at (315) 298-5121 or
your local Fulton Heating Solutions
Representative.
The VTG-2000 through VTG-5000 Fulton part numbers are
2-22-000570 (socket) and 2-22-000571 (adapter). For VTG-6000,
the socket part number is is 2-22-000572. It is a 1
1/16” Deep
Well Socket that does not require an adapter like the VTG-2000
through VTG-5000 model sizes.
½” drive torque wrench and extension (U.S. only; provided by
service technician)
NOTE: Do not loosen or remove the upper doors without guidance from the
factory with regards to proper procedures for accessing the reside of the heat
exchanger.
3. Proceed as follows based on model size:
VTG-2000
through
VTG-5000
Sizes Only:
Evenly tighten all 4 nuts on the upper door in ve stages,
in a criss-cross pattern: top left, bottom right, bottom left,
top right (see Figure 24), in the following order:
20 ft/lbs (27.1 NM)
35 ft/lbs (47.4 NM)
50 ft/lbs (67.8 NM)
100 ft/lbs (135.5 NM)
130 ft/lbs (176.2 NM)
Recheck all nuts in a circular pattern, and proceed to step
4.
VTG-6000
Size Only:
See Figure 25. Evenly tighten all 5/8 numbered nuts (1-20)
as follows, in the sequence illustrated:
25 ft/lbs (33.9 NM)
50 ft/lbs (67.8 NM)
75 ft/lbs (101.6 NM)
100 ft/lbs (135.5 NM)
Recheck all at 100 ft/lbs (135.5 NM), and proceed to step
4.
4. Verify settings of the lower door. The lower door is retained by (16) 3/8”
bolts. Tools required for lower door setting verication:
9/16” socket and 3/8” drive wrench (U.S. only; provided by
service technician)
5. Evenly tighten all nuts on the lower door to 23 ft/lbs (31.2 NM) in a criss-
cross pattern. See Figure 24 and Figure 25. Do not over torque, as this can
result in damaging of the door seal.
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