Maritime Geothermal TF-45, Инструкция по установке и обслуживанию

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Installation Basics
TABLE 1 - Power Supply Connections
(Heat Pump)
Line Description Voltages
L1 Line 1 All
L2 Line 2 All
L3 Line 3 208-3-60, 460-3-60, 380-3-50
N** Neutral All
** Only required if connecting 115VAC circulators to the heat
pump for 208/230-1-60 and 208-3-60 models (the heat pump
itself does not require a neutral). Required for 380-3-50 and
460-3-60 models.
TABLE 2 - Power Supply Connections
(Optional Plenum heater)
Line Description Voltages
L1 Line 1 208/230-1-60, 208-3-60
L2 Line 2 208/230-1-60, 208-3-60
Contact factory for three phase plenum heater requirements.
Unit Description
The TF-Series unit is a high efficiency two-stage geother-
mal heat pump. Two-stage units offer longer runtimes and few-
er cycles resulting in higher efficiency and a higher comfort lev-
el. The heat pump contains ozone-friendly R410a refrigerant. It
has three modes of operation: air heating, air cooling or hydron-
ic heating.
Note that air heating and hydronic heating cannot be ac-
complished simultaneously; the unit switches between modes
according to demand and priority setting.
An electrically commutated (ECM) fan with several airflow
options is standard. The motor has a soft start function for im-
proved efficiency and reduced wear.
Unpacking the Unit
When the heat pump reaches its destination it should be
unpacked to determine if any damage has occurred during
shipment. Any visible damage should be noted on the carrier's
freight bill and a suitable claim filed at once.
The heat pump is well constructed and every effort has
been made to ensure that it will arrive intact, however it is in the
customer's best interest to examine the unit thoroughly when it
arrives.
Optimum Placement
For liquid to air units, to achieve the greatest efficiency, the
heat pump should be centrally located in the home with respect
to the conditioned space. This design provides the best in
economy and comfort and usually can be accomplished in
harmony with the design of the home. A heating system cannot
be expected to produce an even warmth throughout the
household when it is located at one end of the structure and the
warm air is transmitted with uninsulated metal ductwork.
If possible the access panels should remain clear of
obstruction for a distance of 2 ft (0.7 m) to facilitate servicing
and general maintenance.
Raising the heat pump off the floor a few inches is generally
a good practice since this will prevent corrosion and provide
vibration isolation. It is recommended that the heat pump be
placed on a pad (available as an accessory) or a piece of 2''
thick styrofoam. This will smooth out any irregularities in the
concrete floor and deaden any compressor noise emitted from
the bottom of the cabinet.
The heat pump comes equipped with an air filter rack which
can be installed with the removable end (where the filter is in-
serted) on either side to facilitate changing the filter.
Electrical Connections
The heat pump has a concentric 1.093” / 0.875” knockout
for power supply connection to the electrical box. There are
also two 0.875” knockouts for connection to the ground loop
circulator pump module and indoor loop circulator pump. There
are also openings and knockouts in the upper section of the
electrical box, for thermostat connections and optional plenum
heater connections.
A schematic diagram (SCH) and electrical box layout diagram
(ELB) can be found on the electrical box cover of the unit as well
as in the Model Specific section of this manual.
The Electrical Tables in the Model Specific section and the
ELB diagram contain information about the size of wire for the
connections, as well as the recommended breaker size for both
the heat pump and optional plenum heater. Connections are as
per TABLE 1 and TABLE 2.
NOTE: There are two separate power supplies, one for the
heat pump and a second one for the plenum heater if in-
stalled; each must have its own supply wires and breaker.
NOTE: A properly qualified electrician should be retained
to make the connections to the heat pump and associated
controls. The connections to the heat pump MUST CON-
FORM TO LOCAL CODES.
Control Transformer
The low voltage controls are powered by a 100VA class II
transformer. For most electrical service types, the transformer
has a resettable breaker on the secondary side for circuit pro-
tection. Should the breaker trip, locate and correct the problem
and then reset the breaker by pressing in on it. Some electrical
service types use transformer fuses instead of breakers.
IMPORTANT NOTE: For 208/230VAC-1-60 units, if connect-
ing to 208VAC power supply move the red wire connected
to the 240 terminal of the transformer to the 208 terminal of
the transformer.
Circulator Pump Module Wiring
(Ground Loop Only)
The heat pump has provisions for connecting the circulator
pump module so that the pumps will be turned on whenever the
compressor operates. Connect the circulator pump module to
the appropriate two terminals (115V or 230V) of the terminal
strip marked OUTDOOR CIRCULATORS in the heat pump, as
per the voltage of the circulator pump module. Ensure that the
total current draw does not exceed the value indicated on the
label in the heat pump electrical box. Refer to the electrical box
drawing on the electrical box cover for more information.
Note that for some 3-phase electrical service types, power
for the circulators will need to be provided separately. A termi-
nal strip in the heat pump provides 24VAC for operating an ex-
ternal circulator contactor.