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HEAT EXCHANGER ASSEMBLY
HEAT
EXCHANGER
TUBE
COMBUSTION
AIR INDUCER
GAS VALVE
BURNER
FIGURE 37
E-Flue Passageway and Flue Box (Gas Units)
1- Remove combustion air inducer assembly as
described in section D.
2- Remove flue box cover. Clean with a wire brush as
required.
3- Clean tubes with a wire brush.
4- Reassemble the unit. The flue box cover gasket and
combustion air inducer gasket should also be
replaced during reassembly.
F-Evaporator Coil
Inspect and clean coil at beginning of each cooling season.
Clean using mild detergent or commercial coil cleaner.
Flush coil and condensate drain with water taking care not
to get insulation, filters and return air ducts wet.
G-Supply Air Blower Wheel
Annually inspect supply air blower wheel for accumulated
dirt or dust. Turn off power before attempting to remove
access panel or to clean blower wheel.
LGH/LCH156, 180, 210, 240, 300S
H-Condenser Coil
All-Aluminum Coil -
Clean condenser coil annually with water and inspect
monthly during the cooling season.
Clean the coil by spraying the coil steadily and uniformly
from top to bottom. Do not exceed 900 psi or a 45_ angle;
nozzle must be at least 12 inches from the coil face. Take
care not to fracture the braze between the fins and
refrigerant tubes. Reduce pressure and work cautiously
to prevent damage.
Conventional Fin/Tube Condenser -
VENT
Clean condenser coil annually with detergent or
CONNECTOR
commercial coil cleaner and inspect monthly during the
cooling season. Access panels are provided on front and
back of condenser section.
Factory Unit Controller Settings
Use the Unit Controller to adjust parameters; menu paths
are shown in each table. Refer to the Unit Controller
manual provided with each unit.
Tables 28 through 36 show factory settings (in degrees, %
of fan CFM, etc.). Record adjusted settings on the label
located inside the compressor access panel.
When field installing optional kits and accessories, the
Unit Controller must be configured to identify the option
before it will function. Refer to figures 38 and 39 to
determine whether the Unit Controller configuration I.D.
must change. To configure the option, use MAIN MENU >
SETUP > INSTALL menu path. Press SAVE until
CONFIGURATION ID 1 or 2 appears depending on the
option installed. Change the appropriate character in the
configuration I.D. For example, when an economizer is
installed using a single enthalpy sensor, change
configuration I.D. 1, the second character, to "S".
Use menu SETUP > NETWORK INTEGRATION. Set "BACNET" and
network address.
BACNET MAC ADDRESS:
Page 54
TABLE 28
580730
Units With BACnet Module Settings
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