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Model VR tubular radiant heaters are available
in BTUH inputs of 50,000 to 200,000 and in tube lengths from 20 to 70 feet
(see the Technical Data table for BTUH/length combinations). All sizes are
available for use with natural gas or optional propane gas. Model VR
heaters provide full input rate heating capacity to 2,000 feet elevation.
Tubular radiant heaters are engineered to provide quiet, reliable,
energy-efficient, comfort level heating for both spot and space
applications. Model VR is designed with a burner/control box housing a
power burner that fires into a 4" diameter tube, 20 to 70 feet in length.
The burner is equipped with a blower for supplying combustion air and a
multi-try direct ignition with 100% lockout. Controls include a
single-stage gas valve and a pressure switch to verify combustion air flow.
The tubes are in 10-foot
sections with each section having a polished reflector. The tube attached
to the burner is the combustion chamber, all other sections are highly
emissive heat exchanger tubes. The standard configuration is straight, but
optional "L" shaped, "U" shaped and 5-foot straight heat exchanger tubes are
available to change the configuration to adapt to various applications. A
tubular system including an optional "U" tube provides the best balance of
radiant emission over the length of any system. For maximum efficiency, the
exhaust end of all systems is equipped with an aluminized steel turbulator
strip.
Combustion air can either come
from the heated space or be piped from the outside. Outside combustion air
should be supplied (1) if the building atmosphere has negative pressure; (2)
if the building atmosphere is dirty or dusty; (3) if the building atmosphere
contains substances that will cause toxic gas when combined with flame or
flue products; or (4) if the heater is being installed in a tightly closed
room that does not provide required air for combustion.
Venting may be either vertical
or horizontal. Dual venting of two units is permissible when using a Reznor�
optional dual vent kit. Model VR tubular heater systems are shipped in
modular packages requiring field assembly and installation. Standard
features, such as wire form hangers for chain suspension, compression
coupling tube connections, and terminal board thermostat connection are
designed to facilitate installation.
These heaters are approved for
use in the United States and Canada by the Canadian Standards Association
(CSA). Reznor� provides a five-year limited warranty on the burner and a
ten-year limited warranty on all tubes.
| Size |
Efficiency |
Input MBH |
Output MBH |
Number of Blowers
/Fans |
Blower/Fan Size
(In.) |
Minimum CFM |
Maximum CFM |
| 50 |
N/A |
50 |
0 |
N/A |
N/A |
0 |
0 |
| 75 |
N/A |
75 |
0 |
N/A |
N/A |
0 |
0 |
| 100 |
N/A |
100 |
0 |
N/A |
N/A |
0 |
0 |
| 125 |
N/A |
125 |
0 |
N/A |
N/A |
0 |
0 |
| 150 |
N/A |
150 |
0 |
N/A |
N/A |
0 |
0 |
| 175 |
N/A |
175 |
0 |
N/A |
N/A |
0 |
0 |
| 200 |
N/A |
200 |
0 |
N/A |
N/A |
0 |
0 |
| Size: |
Weight (lb.) |
Length (In.) |
Width (In.) |
Height (In.) |
Vent Dia |
| 50 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
| 75 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
| 100 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
| 125 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
| 150 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
| 175 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
| 200 |
42 |
23-21/32 |
13-7/32 |
13-5/32 |
4" |
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