Reznor VR Option - Installation - U Tube Installation - Manual

Form I-VR-U, P/N 205724 R4, Page 1
Description/
Application
The "U" shaped heat exchanger tube is used to adapt a Model VR tubular radiant
heater to a specific location and/or to provide a balance of radiant heat. The "U" heat
exchanger tube may be installed in any length of system from 20 to 70 feet. Comply
with the following requirements in positioning the "U" tube:
• Sizes 100, 125, and 150 require 20 ft (6.1M) of straight tube length at the burner
box before installing an optional “U” tube.
• Sizes 175 and 200 require 30 ft (9.1M) of straight tube length at the burner box
before installing an optional “U” tube.
• Use only one “U” tube in a system.
• Optional 5-ft tube(s) may be used in a layout with a “U” tube.
• On a “U” configuration, the straight tube length on the burner side of the “U” must
be equal to or longer than the tube length on the exhaust side.
• If a “U” configuration is angled, the exhaust side must be the high side.
The "U" shaped heat exchanger tube option includes a reflector which must be field
assembled and installed.
Components
1- "U" Heat Exchanger
Tube
2 - Reflector Top
3 & 4 -
Reflector Sides
5 - Coupling 6 - Wire Reflector Retainer,
Hanger Bar, Tube Bracket,
and U-bolt with Nuts
Clamp & bracket
are in the
hardware bag.
FIGURE 1 - Option UB3 Components
"U" Heat Exchanger Tube with Reflector, Option UB3
Form I-VR-U (Version B)
Obsoletes Form I-VR-U (Version A)
Applies To: Model VR
WARNING
Improper installation, adjustment, alteration, service, or maintenance
can cause property damage, injury or death. Read the installation,
operation, and maintenance instructions thoroughly before installing or
servicing this equipment.
Option UB3, Package P/N 205211, includes:
Code Qty P/N Description
"U" Tube and "U" Tube Reflector Parts
1 1 205212 "U" Heat Exchanger Tube
2 1 268222 "U" Tube Reflector Top
3 1 268223 "U" Tube Reflector Right Side
4 1 268224 "U" Tube Reflector Left Side
1 120677 "U" Tube Reflector Bracket (shipped in
parts bag below)
Coupling and Hardware for Tube Connection
5
1 205546 Compression Coupling
2 37661 #10x1/2" Self-drilling Screws (shipped in
parts bag below)
Wire Retainer, Hanger Bar, Tube Bracket, and U-Bolt
6
1 209321 Wire Reflector Retainer (for straight tube)
1 209322 Hanger Bar (for straight tube)
1 205586 Tube Bracket (for straight tube)
1 131785 U-Bolt with Brass Nuts for tube bracket
(shipped in parts bag below)
"U" Tube Kit Hardware Bag, P/N 205722, includes items
below plus the items above that indicate they are shipped
in the parts bag:
Hardware for assembling and attaching "U" tube reflector
14 113275 Screws, #10-32 x 1/2" long
14 26490 Nuts, Kep #10-32
2 113807 Washers
1 120716 1/2" Stainless Worm-drive Clamp
2 196336 Clip-on, spring steel Receptacle Nut
2 11813 #10x1/2" Sheetmetal Screws (for clip-on
nuts)
Reference NOTE:
See Technical
Form T-VR-CNFG
for allowable
configurations by
size and length.