Reznor VR Unit Installation Manual - Manual (Page 17)

Form I-VR, P/N 205202 R13, Page 16
FIGURE 17A - Examples of configurations
with the exhaust heat exchanger tube
adjacent to a straight heat exchanger.
FIGURE 17B - Examples of configurations that require more than three turbulator strips
and have the exhaust heat exchanger tube adjacent to an “L” or U” heat exchanger tube.
To install turbulator:
1) Insert a turbulator section into the exhaust heat
exchanger tube.
3) Interlock turbulator sections as they are inserted
(See FIGURE 16B).
4) Continue until all required sections are in place.
Slide all turburlator sections
into exhaust heat exchanger tube .
Slide three turbulator sections into
the end of exhaust heat exchanger tube.
Slide two turbulator sections
into heat exchanger tube before “U” or “L”.
To install turbulator:
1) Before attaching the “U” or “L” tube, insert two
interlocked turbulator sections (See FIGURE
16B) into the last straight tube.
2) Use compression couplings to attach the “U” or
“L” heat exchanger tube to the straight tube and
to the exhaust heat exchanger tube.
3) Insert three interlocked turbulator sections into
the exhaust heat exchanger tube.
6.2.4 Install
Reflectors and
Optional Side Shield
and/or End Covers
Straight Tube
Reflector Installation
Instructions
WARNING: Do not
operate heater
without reflectors.
See Hazard Inten-
sity Levels, page 2.
Reflectors are shipped with the tubes. Clips and screws for length of system
are included in the tube package hardware bag.
FIGURE 18 -
Reflector for
Straight Tubes
Parts/Tools Needed: Clips and screws from the tube package hardware bag
(see Paragraph 3), 1/8” drill, 5/16” nut driver
1. Before installing reflectors, check a), b), c) and d). If needed, adjust or
add tube bracket or suspension point to comply with these requirements.
a) The combustion chamber tube must have two suspension points.
b) Each heat exchanger tube must have at least one suspension point.
c) There must be a suspension point within 12” (305mm) of every coupler.
d) All chains must be plumb with the suspension point.
2. Before installing reflectors, read the instructions to understand the differ-
ence between NON-SLIP and SLIP reflector overlaps. Installed reflectors
MUST comply with the following.
• No more than two consecutive NON-SLIP overlaps on a straight
system.
• No more than four consecutive NON-SLIP overlaps in a section
containing a single “U” or “L” tube reflector. NOTE: Two of the four
6. Mechanical
(cont’d)
6.2 Assemble and Suspend the Heater (cont’d)
6.2.3 Install the Heat Exchanger Tubes and Turbulator Strip
Sections (cont’d)
Turbulator Requirements (cont’d)
CAUTION: If the reflectors have a protective film, remove
the protective film before installing reflectors.