VanEE 190 H Installation Manual - Caution
Method 2: return side connection
• Cut an opening into the furnace
return duct at a minimum
distance of 10 linear feet
upstream where the furnace
return duct connects to the
furnace cabinet, as measured
along the lenght of the duct.
• Connect this opening to the fresh
air distribution port of the unit (see figure 10).
NOTE: For Method 2, it si not essential that the furnace blower
runs when the unit is in operation, but we recommend it.
If desired, synchronize the furnace blower operation (see
Section 4.3).
3.4.3 Simplified installation
(Volume Ventilation)
(as illustrated in Section 2.3)
There are two methods (figures 11 and 12) for connecting the
unit to the furnace:
Method 1: return-supply Method 2: return-return
Stale air intake:
• Cut an opening into the furnace return duct (at least 6 feet
(1.8 m) from the furnace).
• Connect this opening to the stale air intake port on the unit as shown.
Fresh air distribution: (same instructions as for Method 1 or
Method 2, Section 3.4.2). For method 2 (return-return), make
sure there is a distance of at least 3 feet (0.9 m) between the 2
connections to the furnace.
NOTE: For Method 1, it is not essential to synchronize the furnace
blower operation with the unit operation, but we recommend it.
8
3.0 INSTALLATION
(CONT’D)
minimum 3’
(0.9 m)
minimum
10’ (3.1 m)
upstream
figure 12
VD0108
minimum
10’ (3.1 m)
upstream
figure 10
VD0111
VD0110
minimum 18’’
(0.5 m)
Steel duct
figure 11
minimum 6’
(1.8 m)
CAUTION
If using Method 2, make sure the furnace blower operation
is synchronized with the unit operation! See Section 4.3.