Reznor VR Unit Installation Manual - Manual (Page 18)

Form I-VR, P/N 205202 R13, Page 17
NON-SLIP overlaps are required at each end of the “U” or “L” tube
reflector.
• No more than five consecutive NON-SLIP overlaps in a section con-
taining two “L” tube reflectors. NOTE: Four of the five overlaps are
required at each end of the “L” tube reflectors.
• No consecutive SLIP overlaps.
• Straight system MUST comply with the installation illustrated in FIGURE
19D for the length of system being installed.
3. Begin reflector installation at the combustion chamber end. Slide the reflec-
tor into the wire reflector retainers on the combustion chamber tube. Posi-
tion the reflector so that it is 1/4” (6mm) from the box.
4. Attach the reflector to the tube bracket closest to the burner/control box
(See FIGURE 19A). Reflector must be anchored at this end to keep it from
moving due to expansion and contraction of the system.
5. Slide the next reflector into the wire reflector retainer on the adjacent
straight heat exchanger tube. Position the reflector so that it overlaps the
combustion chamber reflector by 1-1/2” (38mm).
6. NON-SLIP Overlap (FIGURES 19B and 19C)
On each side where the two reflectors overlap, slide a clip over the two
reflector flanges ( FIGURE 19B). To allow for reflector expansion, the clip
must have a minimum of 1-1/4” (32mm) clearance from a tube bracket
between the clip and the burner box. Position each clip, drill 1/8” hole, and
insert screw.
Refer to FIGURE 19C. In the overlapped portion, on each side, drill a 1/8”
hole in the two bottom reflector segments. Secure with sheetmetal screws.
At the burner box
and downstream
of a SLIP overlap,
secure the
reflector. Insert
sheetmetal screws
(one on each side)
down through the
reflector and into
the tube bracket.
CAUTION: Only
screw reflector to
the tube bracket at
the burner box and
at SLIP overlaps. At-
taching reflectors at
any other location
will cause damage to
the reflectors.
FIGURE 19A - Attach
the Reflector to the
First Tube Bracket
and at SLIP Overlaps
FIGURE 19C - On each side of the Overlapped
Reflectors, Drill Two Holes in the Bottom Two
Reflector Segments and Secure with Screws
Clip and Screw
in FIGURE 19B
On each side, in
the two bottom
reflector
segments, drill
two holes and
secure with screws.
View of
NON-SLIP
Overlap
FIGURE 19B - NON-SLIP Overlap - Use
Clips and Screws to Attach and Secure
the Reflector Flanges
Minimum 1-1/4” (32mm)
Slide clip over
edges of over-
lapped reflectors.
Drill 1/8” hole and
insert sheetmetal
screw.
Tube
bracket on
the burner
side of the
reflector
clip
NOTE: ALL reflector overlaps on 20 and 30 ft systems are NON-SLIP.