Hearth & Home Technologies 299-900D User Manual

Hearth & Home Technologies  •  Heat-Zone-240V Air Duct Kit  •  299-900D  •  7/10

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3.  Determine the location for the air register/fan housing as-

sembly. Cut a 127 x 346 mm hole between framing 
members (wall studs or fl oor joists).

4.  Mount and secure the fan housing assembly to framing 

members so the front surface is 6 mm below the fi n-
ished wall or fl oor surface. Use the adjustable mounting 
brackets and screws provided in the kit. See Figure 4.  
NOTE: The brackets can be rotated 180º and mounted 
to the back side of the 2 x 4 if necessary.

NOTE: If the fan housing is installed in a 2 x 4 wall, the 
front of the housing will protrude approximately 13 mm out 
of the wall. See Figure 5.

5.  Install the air duct run. NOTE: Fold outer poly layer of 

fl exible duct back to maintain clearance to combustibles 
on the fi replace. Secure liner to the collar with clamp.

ROUND AIR DUCT:  Attach the 152 mm round air duct 
(supplied in the kit) to the heater collar and run the duct to 
the fan housing. Attach the round-to-oval adapter to the 
fan housing and the air duct to the adapter. See Figure 6.

OVAL AIR DUCT: Attach the round-to-oval adapter to 
the heater starting collar and a 152 mm oval duct to the 
adapter. Complete the duct run and attach the oval duct 
to the fan housing. NOTE: 152 mm metal oval air duct is 
NOT provided with this kit but can be purchased from a 
heating or air conditioning ventilation supplier.

ROUND and OVAL DUCT: A combination of 152 mm round 
and 152 mm oval air duct can be used in the duct run. Oval 
duct components must be purchased from a heating or air 
conditioning ventilation supplier.

NOTE: Support duct at intervals of no greater than four 
feet with no more than 1/2 in. sag between supports or as 
required per local code. Secure the duct so that clearance 
to the outer wrap of the fi replace is maintained.

6.  Install a wall switch in a convenient location. This switch 

will control the HEAT-ZONE-240V fan operation.  When 
using the AUX300CE in the IPI Plus system, the AUX1 
or AUX2 can control the output and ON/OFF function in 
place of a separate wall switch.  Note that the RC300 
remote is needed.

7.  Wire 240 VAC service TO the wall switch and FROM the 

wall switch to the fan junction box. Use wire connectors to 
secure the 240 VAC service wires to the hot and neutral 
fan wires and screw  the 240 VAC ground wire to the fan 
junction box. See Figure 8 for isolated control wall switch.  
See Figure 9 for IPI Plus with auxiliary control.

8.  Screw the fan junction box to the fan housing.

9.  Screw the register adapter frame and the air register to 

the fan housing. See Figure 7.

10.  Complete the heater installation per instructions.