Valor 530XAN Installation And Owner's Manual page 31

9.8 Attaching Air Restrictors – Appliances with Vertical Vent Rise Only
No restrictors are required for appliances, which only have a horizontal vent, run.
There are three types of restrictor supplied with each #530 engine unit. They are slightly
different in size. They can be identified by the number printed on them. – See figure 49.
The restrictors cover part of the openings in the firebox rear wall ports – See figure 50.
Each restrictor can be fitted at either Maximum or minimum port opening – See figure 50.
Types 1, 2 and 3 are supplied with ceramic log appliances.
Types 4, 5, and 6 are supplied with ceramic coal appliances.
The correct restrictors to be fitted for each type of installation are shown in the table below.
To fit the restrictors, remove the center screws from the rear ports and fit the restrictors
using these screws. To set the restrictors at maximum port opening, slacken the bottom
screws in the ports, slide the restrictors down as far as possible and tighten the screws over
the restrictors.
To set the restrictors at minimum port opening, slide the restrictors up as far as possible and
tighten the screws. With the largest restrictors, the upper screws may need to be slackened to
allow the restrictors to go under the screw heads.
Vent Vertical
terminal vent
pipe run
Horizontal Less than
through 2ft
wall (61cm)
(With From 2ft
vertical (61cm)
rise) but less
than 4ft
(122cm)
From 4ft
(122cm)
but less
than 6ft
(183cm)
6ft
(183cm)
or more
Less than
Vertical
through 13ft
roof (396cm)
13ft
(396cm)
or more
Use restrictor Port
type opening
Set at
For For
Logs Coal
1 4 Maximum
1 4 Minimum
2 5 Maximum
2 5 Minimum
3 6 Maximum
3 6 Minimum
Figure 50
31 of 50
Figure 49