23
Majestic MARQ36IN-B, MARQ42IN-B Installation Manual • 2614-980 Rev. D • 4/19
Top Vent - Vertical Termination
No Elbow
V
1
= 50 ft. Max. (15.2 m)
V
1
= 2 ft. Min. (610 mm)
Note:
Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
V
1
Figure 4.12
NOTE:
Exhaust Restrictor ships
in manual bag assembly
Figure 4.13 Exhaust Restrictor Installation
Exhaust Restrictor Instructions
1. Remove the top piece of refractory, if already installed.
2. Break the exhaust restrictor into two pieces. Do this
by bending the part back and forth until it breaks.
See Figure 4.14.
3. Orientate and align the two pieces of the exhaust
restrictor as shown in Figure 4.14.
4. Match the amount of vertical you have in the system
with the chart to find the appropriate position to set the
exhaust restrictor. See Table 4.1.
5. Center the two exhaust restrictor pieces on the vent at
the setting selected in step 3 and secure in place by
using two self-tapping screws. See Figure 4.13.
6. Reinstall the top refractory.
Vertical Pipe
MARQ36IN-B
MARQ42IN-B
Up to 30 ft.
No
Restrictor
No
Restrictor
31-50 ft.
2-2
2-2
Table 4.1.
Figure 4.14 Exhaust Restrictor Installation
BREAK
HERE
EXHAUST RESTRICTOR SET TO 2-2
1
1
1
1
2
2
3
3
4
4
5
5
5
5
2 3 4
2 3 4
Exhaust restrictors are recommended for these vertically
terminated products which have excessive draft. Ex-
haust restrictors will compensate for high draft, and re-
store visual flame height. If the vent configuration has a
total vertical of 31-50 feet, an exhaust restrictor may be
needed. The exhaust restrictor can be located in the ap-
pliance manual bag.
EXHAUST
RESTRICTOR