T Therm Geo TST-***, Инструкция по установке и эксплуатации

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12/03/2012
18 GI301
Duct System
An air filter must always be installed upstream of the air coil on the return air side of the air handler or
furnace.
If there is limited access to the filter rack for normal maintenance, it is suggested that a return air filter
grill be installed. Be sure that the return duct is properly installed and free of leaks to prevent dirt and debris
from bypassing the filter and plugging the air coil.
In applications using galvanized metal ductwork, a flexible duct connector is recommended on both the supply
and return air plenums to minimize vibration from the blower. To maximize sound attenuation of the unit
blower, the supply and return plenums should include an internal duct liner of 1-inch thick glass fiber or be
constructed of UL listed duct board. Insulation is usually not installed in the supply branch ducts. Ducts in
unconditioned areas should be wrapped with a minimum of 1-inch (25mm) duct insulation. Application of the
unit to uninsulated ductwork in an unconditioned space is not recommended as the unit’s performance will be
adversely affected. If the air handler is connected to existing ductwork, a previous check should have been
made to assure that the duct system has the capacity to handle the air required for the unit application. If the
existing duct system is not designed to handle the increased air flow, larger ductwork should be installed. All
ductwork should be checked for leaks and repairs made accordingly. The duct system and diffusers should be
sized to handle the design airflow quietly. If air noise or excessive airflow is a problem, the blower speed can
be changed to a lower speed to reduce airflow. This will reduce the performance of the unit slightly in heating;
however, it will increase the temperature rise across the air coil.
Airflow must still meet minimum
requirements.
Air Coil Installation
TTHERM GEO Split models are sold with a factory matched air coil. You can be assured your heat pump will
perform as designed, meeting or exceeding Energy Star requirements.
Gas, Oil, or Electric Furnace
– The heat pump refrigerant air coil may be installed in one of two different
configurations. How you choose to install the air coil is dependent on your structure’s size and space
requirements, personal preferences, and the furnace manufacturer’s recommendations.
Refer to your furnace
owner’s manual and installation manual or consult with the furnace manufacturer to make certain the
installation conforms to their requirements.
The air coil provided by TTHERM GEO is relatively large. Although the large physical size of the coil may
present some installation challenges, the size is necessary to achieve optimum system performance.
The air coil may be placed in either the return side or the supply (preferred) side of the heating system. The
following page illustrates two of the mounting methods which may be used.