13
HORIZONTAL UNITS
1 . Position the unit to minimize long runs of duct or runs of
duct with many turns and elbows .
2 . Unit can be mounted left or right side airflow configura-
tion .
3 . Position the unit on adequate supports or by using
support brackets (see Figure 8) and connect supply
plenum .
4 . If summer air conditioning is desired, position the in-
door coil on the supply air side of the unit . Insure that
no air can bypass this coil .
5 . Secure the four angle brackets to the return air open-
ing . See Figure 9 . Connect the return air ducting to the
return air opening at the top of the unit . Make the con-
nection air tight to prevent entraining combustion gases
from an adjacent fuel-burning appliance .
NOTE: Do not block furnace access with support rods .
Maintain clearances recommended in Figure 8 . Allow
enough space for proper service maintenance or re-
placement of the heat exchanger and blower assem-
bly .
DUCTING
FOUR ANGLE BRACKETS, SHIPPED WITH 80% SINGLE STAGE
CONSTANT TORQUE UNITS, CAN BE INSTALLED HORIZONTALLY .
THESE BRACKETS MAY BE USED TO SECURE THE RETURN AIR
DUCT TO A HORIZONTAL UNIT .
RETURN
AIRFLOW
REAR VIEW
FIGURE 9
HORIZONTAL RETURN AIR DUCT
(LEFT-HAND AIRFLOW POSITION SHOWN)
ST-A1220-03-X0
NOTE:
HORIZONTAL LEFT ORIENTATION DEPICTED IN ILLUSTRATION.
HORIZONTAL RIGHT ORIENTATION IS SIMILAR IN INSTALLATION.
AIR FLOW
NOTE:
DO NOT BLOCK FURNACE ACCESS WITH
SUPPORT RODS, ALLOW SPACE FOR
PROPER SERVICE MAINTIENCE OR
REPLACEMENT OF THE HEAT EXCHANGER
AND BLOWER ASSEMBLY .
FIGURE 8
HORIZONTAL FURNACE INSTALLED W/SUPPORT BRACKETS
ST-A1220-03
Ducting
Summary of Contents for 801C Series
Page 52: ...52 CM 0917...
