Reznor VR Option - Installation - Outside Air Kit - Manual (Page 2)

Form I-VR-OA, P/N 205406 (Rev 3), page
Applies to: Tubular Infrared Model VR (60 Hz or 50 Hz)
and Model GVR (50 Hz)
Installation of Combustion Air
Inlet Kit, Option DE2
Form I-VR-OA (Version A)
Obsoletes Form I-VR-OA �
An optional combustion air inlet kit is required when the application requires
combustion air from outside the building. Outside combustion air should be
supplied (1) if the building atmosphere has negative pressure; (2) if the build-
ing atmosphere is dirty or dusty; (3) if the building atmosphere contains any
substance that will cause toxic gas when passed through a flame; or (4) if the
heater is being installed in a tightly closed room that does not provide required
air for combustion.
Do not install outside combustion air inlet on an unvented heater.
The kit includes components listed below. The air inlet cover and flexible sec-
tion of pipe connect directly to the burner/control box and extend a maximum
of three feet (.9M). The pipe between the expandable pipe and the terminal cap
is field-supplied.
Application and
Kit Components
FIGURE - Outside
Air Kit, Option DE2
Components
2
3
4
(Relay has wires attached.)
5
Maximum Length
Select a location for the
outside air terminal so
that the maximum length
including the equivalent
length for elbows is not
exceeded.
Kit P/N 204785 204786
Application/BTUH Size (VR is available
in 60 Hz or 50 Hz; GVR is 50 Hz only.)
50, 75, 00, & 25 (all 50 or
60 Hz); 50 (60 Hz only)
50 and 75 (50 Hz only);
75 and 200 (60 Hz only)
Item Components Qty P/N P/N
1 Combustion Air Inlet Cover 1 204783 204784
2 Inlet Air Cap 1 120726 204782
3 Flex Pipe, 40” (1016mm) long 1 120729, 4” diameter 204956, 5” diameter
4 Relay Assembly 1 205540 (Relay P/N 103319 w/ three 6” wires w/ terminals)
Hardware Bag:
5
1/2” Wide Worm Drive
Clamp, stainless
2
102716, 3-5/8” to 4-1/2”
diameter range
155320, 4-5/8” to 5-1/2”
diameter range
(Not illustrated)
Drill Fixture 1 204615 204617
#8-32x1/2” long screw 2 195638 (for attaching combustion air inlet cover)
#6x5/8” long round head
phillips Rolox
2 110076 (for attaching relay)
Orange Wire Nut 1 16354
Yellow Wire Nut 1 16355
Wiring Diagram Label 1 205526
®
Maximum Length of Outside Combustion Air Inlet Pipe
Type of Inlet Air
Pipe
BTUH Size Hz
Maximum
Length
Equivalent Length for
90° Elbow 45° Elbow
* 4” Smooth Wall
50, 75, 100
50 or 60
80 ft (24.3M) 10 ft (3M) 5 ft (1.5M)
125
60 ft (18.3M) 10 ft (3M) 5 ft (1.5M)
150 60
5” Smooth Wall
150 50
175 50 or 60
200 60
* 4” Corrugated or
Flexible
50, 75, 100
50 or 60
40 ft (12.2M) N/A N/A
125
30 ft (9.1M) N/A N/A
150 60
5” Corrugated or
Flexible
150 50
175 50 or 60
200 60
*Assumes the use of three feet (.9M) of flexible pipe at the combustion air inlet on the
burner/control box