19
HOT AIR DUCTING INSTALLATION
Different hot air ducting systems can be installed with the BIS ULTRA : - Gravity kit
- Forced air kit
- As is - Heat circulating
Gravity kit
Two kits are available :
1.
Double hot air outlet
including: (See Fig.15)
- 2 telescopic lengths 8" I.D.
- 2 90º elbows 8" I.D.
- 2 hot air outlet kits (louvers and frames)
- 2 adaptors
2.
Single hot air outlet including: (see Fig.14)
- 2 6" lengths 8" I.D.
- 1 hot air outlet kit (box, louver and frame)
- 2 adaptors
See components list page 35.
The only fan that can be used with the gravity kit is the UZY3.
The gravity kit allows you to block the upper grill of the fireplace. To do so, follow the steps below:
a)
Remove the upper grill and its frame from the fireplace.
b)
Install the black panel (BISCF) making sure that the insulation strip is installed inside.
c)
The fireplace façade can be covered with non-combustible material (fig. 18).
figure 14
figure 15
The safety rules for hot air ducting gravity kit installation are the following:
Minimum height
*
68" (1727 mm)
Maximum length
See figures 16 & 17
*
The height of the louver must be measured from the base of the BIS to the middle point of the
louver.
