Heat Controller HTH, HTV, HTD Return, Air Inlet, Some units include a painted drain connection

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Vertical Installation

Sound Attenuation for Vertical Units - Sound attenuation is achieved by enclosing the unit within a small mechanical room or a closet. Additional measures for sound control include the following:

1.Mount the unit so that the return air inlet is 90° to the return air grille. Refer to Figure 9. Install a sound baffle as illustrated to reduce line-of sight sound transmitted through return air grilles.

2.Mount the unit on an Unit Isolation Pad to minimize vibration transmission to the building structure. For more information on Unit Isolation Pads, contact your distributor.

Condensate Piping for Vertical Units - Vertical units utilize a condensate hose inside the cabinet as a trapping loop; therefore an external trap is not necessary. Figure 10a shows typical condensate connections. Figure 10b illustrates the internal trap for a typical vertical heat pump. Each unit must be installed with its own individual vent (where necessary) and a means to flush or blow out the condensate drain line. Do not install units with a common trap and/or vent.

Figure 10a: Vertical Condensate Drain

Figure 9: Vertical Sound Attenuation	ರ
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	Return
	Air Inlet
	* Some units include a painted drain connection.
	Using a threaded pipe or similar device to clear
	any excess paint accumulated inside this fitting
	may ease final drain line installation.
	Figure 10b: Vertical Internal Condensate Trap

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