4.Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in Economizer Hood and
Economizer Hood and Two-Position Hood —
NOTE: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.
1.The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bot- tom of the indoor coil access panel. See Fig. 11.
each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.
5.Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 13.
6.Caulk the ends of the joint between the unit top panel and the hood top.
7.Replace the filter access panel.
TOP
PANEL
| TOP |
| PANEL |
| CAULK |
| HERE |
INDOOR | INDOOR |
COIL | COIL |
DIVIDER
OUTSIDE
AIR
HOOD
CLEANABLE
ALUMINUM 
FILTER
FILTER
BAROMETRIC
RELIEF
581J
FILTER
CLIP
ACCESS |
|
| ACCESS |
PANEL |
|
| PANEL |
|
|
|
|
Fig. 11 - Indoor Coil Access Panel RelocationC06025
Fig. 13 - Economizer Filter Installation
Step 9 — Install Flue Hood
C08634
2.Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. See Fig. 12.
Flue hood is shipped screwed to the basepan beside the burner compartment access panel. Remove from shipping location and using screws provided, install flue hood and screen in location shown in Fig. 14.
LEFT |
|
HOOD |
|
SIDE | 19 1/16”B |
| |
| (483mm) |
TOP
PANEL
INDOOR COIL
ACCESS PANEL
SCREW
33 3/8”
(848mm)
HOOD DIVIDER
BLOWER
ACCESS
PANEL
C07081
Fig. 14 - Flue Hood Details
Step 10 — Install Gas Piping
Fig. 12 - Economizer Hood Construction
C06026
Installation of the gas piping must be accordance with local building codes and with applicable national codes. In U.S.A., refer to NFPA 54/ANSI Z223.1 National Fuel
3.Remove the shipping tape holding the economizer barometric relief damper in place (economizer only).
4.Insert the hood divider between the hood sides. See Fig. 12 and 13. Secure hood divider with 2 screws on
Gas Code (NFGC). In Canada, installation must be accordance with the CAN/CSA B149.1 and CAN/CSA B149.2 installation codes for gas burning appliances.
13
