Installation Instructions

2
Two Side Returns
Two side returns per furnace is ordinarily used when only 8 or 10 tons of
cooling are required and where a bottom return is not practical. The fur-
naces should be from 24 to 30 inches apart. Two side returns are appli-
cable only for upflow models with five tons of airflow.
Figure 3 - Two Side Returns Per Furnace Side
Cutouts are 14" x 23 " (All Furnaces)
Top Return
When counterflow furnaces are twinned, the return air must enter through
the top of the furnace.
See the furnace specification sheet for minimum plenum height and maximum
CFMs per furnace.
Figure 4 - Twinned Counterflow Furnaces
"A" = Minimum Plenum Height Furnaces from 0 to 30" Apart
SECTION II TWINNING KIT INSTALLATION
This Installation Kit includes:
UTEC CONTROL
FAN SENSOR
(2 in kit)
Quantity Item
1 UTEC Control 1196-100
2 Fan Sensors
Quantity Item
3 #6 Screws, 3/4" long
--- 18 Gauge 5-Wire Conductor
TWINNING KIT
FIELD SUPPLIED MATERIAL
TOOLS REQUIRED
1 /4" Nut Driver
Drill
3/32" Drill Bit
Small, Regular (Common) Screwdriver
Before Installing the Twinning Kit
There are important items which must be determined before installing the
twinning kit. Read all of these instructions before you begin installing either
furnace.