Reznor VR Unit Installation Manual - Manual (Page 34)

Form I-VR, P/N 205202 R13, Page 33
FIGURE 32 -
Thermostat
Connections
Terminal Strip on
the Burner Box for
Thermostat Connections
of the infrared rays. See the wiring diagram in FIGURE 31 or inside the heater
door panel.
Unit-Mounted Thermostat Bracket, Option CM3
The optional thermostat bracket kit allows attachment of the controlling ther-
mostat to the burner/control box. The bracket attaches at the same location as
the thermostat strip and includes a junction box for mounting the thermostat.
Complete instructions are included with the option kit.
The thermostat is not included in the kit. The low voltage thermostat may be
either an optional thermostat (Option CL1) or an equivalent field-provided ther-
mostat.
Multiple-Heater Control, Option CL31 and CL32
Options are available to permit control of up to six heaters from a single ther-
mostat or a time clock and single/multiple thermostats. For maximum safety,
the multiple control is done in the low voltage circuit. Complete instructions are
included in each Option Kit.
8. Check
Installation and
Start-Up
Check the installation prior to start-up:

Does the installation comply with all electrical and gas codes?
 Does the installation comply with required clearances? Requirements are
shown in Paragraph 4.3. Signs are required specifying maximum permis-
sible stacking height underneath the heater.
 If required, was the manifold pressure adjusted for high altitude? Sizes
50-175, was a high altitude pressure switch installed? See Paragraphs 6.1
and 6.3.
 If required, was a size conversion kit installed? See Paragraph 3 and 6.1.
 Are turbulator strips installed? See Paragraph 6.2.
 Is the system hung securely according to the instructions? See Paragraph
6.2. Are the "S" hooks closed? Are coupling bolts tight?
 If there is protection film, has it been removed? Have the reflectors been
installed with appropriate SLIP and NON-SLIP overlaps? Is there 1/4”
(6mm) space between the combustion chamber reflector and the burner/
control box? Are the reflectors screwed to the tube brackets as required?
If exposed to wind gusts, do straight reflectors have two retainers? See
Paragraph 6.2.
 Is the system level? Before initial start-up, it is important that the system
be checked again to be sure that it is level. Use a spirit level and check the
burner and all sections of tubes. If the tubes are not level, hot spots could
occur causing premature failure. Check all sections including "L" and "U"
tubes. Adjust turnbuckle or chain as required.
 Is the vent installed properly and supported securely? See Paragraph 6.4.
 Has the system been checked for gas leaks? Has the gas supply pressure
been verified? Will the gas connection allow for expansion and contrac-
tion? See Paragraph 6.3.
NOTE: On initial
start-up, verify that
any excess corrosion
inhibitor has been
wiped from the heat
exchanger tubes.
Failure to do so could
result in excessive
smoke from the surface
of the tubes.