Restrictor Plate Orifice Size And Models Chart - Majestic fireplaces 7PDVS Homeowner's Installation And Operating Manual

DV Power Vent System
After you plan the venting lay-out and before the installation of the power vent box, check the following chart to make
sure the correct orifice is installed.
The power vent box is shipped with the 29/32" restrictor plate orifice in place, used for 36LDVT or 36LDVR models.
For all other models, replace the restrictor plate orifice with the correct size according to the following chart:
Models
33BDVT or 33BDVR
36BDVT or 36BDVR
DVR33
39BDVT or 39BDVR
43BDVT or 43BDVR
DVRT36
DV360
DVRT39
DVRT43
360DVS2 or 360DVS3 or 360DVSL or 360DVSR
DV580
33LDVR or 33LDVT
36LDVR or 36LDVT
39LDVR or 39LDVT (NG)
39LDVR or 39LDVT (LP)
43LDVR or 43LDVT (NG)
43LDVR or 43LDVT (LP)
33XDVR
33XDV
36XDV
39XDV
6
Restrictor Orifice Sizes and Models
Input (BTU/h)
15,000
18,000
20,000
22,000
25,000
25,000
30,000
30,000
33,000
38,000
38,000
16,000
19,500
23,000
22,500
26,000
24,000
21,500
21,500
27,500
31,000
Restrictor Orifice Size
23/32"
29/32"
31/32"
31/32"
1"
1"
1¹⁄₃₂"
1¹⁄₃₂"
1¹⁄₁₆"
1¹⁄₄"
1¹⁄₄"
29/32"
29/32"
31/32"
31/32"
1"
1"
31/32"
31/32"
1³⁄₈"
1¹⁄₃₂"
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