15
Standard Connection
Run the low--voltage leads from the thermostat, through the inlet
hole, and into unit low--voltage splice box.
Locate eight (six for 460V 3--phase) 18--gage wires leaving
control box. These low--voltage connection leads can be identified
by the colors red, green, yellow, brown, blue, and white (See Fig.
11). Ensure the leads are long enough to be routed into the
low--voltage splice box (located below right side of control box).
Route leads through hole in bottom of control box and make
low--voltage connections (See Fig. 11). Secure all cut wires, so that
they do not interfere with operation of unit.
POWER
SUPPLY
FIELD-SUPPLIED
FUSED DISCONNECT
HIGH VOLTAGE
POWER LEADS
(SEE UNIT WIRING
LABEL)
EQUIP GR
3-PHASE SHOWN
1-PHASE USES
TWO POWER
LEADS
SPLICE BOX
LOW-VOLTAGE
POWER LEADS
(SEE UNIT
WIRING LABEL)
WHT(W1)
W/W1
YEL (Y)
Y1/Y
G
GRN(G)
RED(R)
BRN(C)
BLU(DH)
R
C
DH
Y2
W2
PINK(Y2)
BLK(W2)
CONTROL BOX
(W2 ON 208/230 VAC
MODELS ONLY)
THERMOSTAT
(TYPICAL)
(DH ON 208/230 VAC
MODELS ONLY)
A13016
Fig. 11 -- High-- and Control--Voltage Connections
IMPORTANT
:
Dehumidification control must open control
circuit on humidity rise above set point.
Use of the dehumidification cooling fan speed requires use of
either a 24 VAC dehumidistat or a thermostat which includes
control of a 24 VAC dehumidistat connection. In either case, the
dehumidification control must open the control circuit on humidity
rise above the dehumidification set point.
Heat Anticipator Setting (Electro--Mechanical
Thermostats only)
The room thermostat heat anticipator must be properly adjusted to
ensure proper heating performance. Set the heat anticipator, using
an ammeter between the W1 and R terminals to determine the exact
required setting.
NOTE
: For thermostat selection purposes, use 0.18 amp for the
approximate required setting. Failure to make a proper heat
anticipator adjustment will result in improper operation, discomfort
to the occupants of the conditioned space, and inefficient energy
utilization; however, the required setting may be changed slightly
to provide a greater degree of comfort for a particular installation.
Transformer Protection
The transformer is of the energy--limiting type, however a direct
short will likely blow a secondary fuse. If an overload or short is
present, correct overload condition and check for blown fuse on
Indoor Fan board or Integrated Gas Controller. Replace fuse as
required with correct size and rating.
PRE--START--UP
ENVIRONMENTAL,
FIRE,
EXPLOSION,
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
1. Follow recognized safety practices and wear protective
goggles when checking or servicing refrigerant system.
2. Do not operate compressor or provide any electric power
to unit unless compressor plug is in place and secured.
3. Do not remove compressor plug until all electrical
sources are disconnected and tagged.
4. Relieve and recover all refrigerant from system before
touching or disturbing compressor plug if refrigerant
leak is suspected around compressor terminals.
5. Never attempt to repair soldered connection while
refrigerant system is under pressure.
6. Do not use torch to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective goggles and
proceed as follows:
a. Shut off electrical power to unit and install
lockout tag.
b. Relieve and reclaim all refrigerant from system
using both high-- and low--pressure ports.
c. Cut component connecting tubing with tubing
cutter and remove component from unit.
d. Carefully unsweat remaining tubing stubs when
necessary. Oil can ignite when exposed to torch
flame.
!
WARNING
Use the Start--Up Checklist supplied at the end of this book and
proceed as follows to inspect and prepare the unit for initial
start--up:
1. Remove access panels (see Fig. 23).
2. Read and follow instructions on all DANGER, WARNING,
CAUTION, and INFORMATION labels attached to, or
shipped with unit.
3. Make the following inspections:
a. Inspect for shipping and handling damage, such as
broken lines, loose parts, disconnected wires, etc.
b. Inspect all field-- and factory--wiring connections. Be
sure that connections are completed and tight.
c. Ensure wires do not touch refrigerant tubing or sharp
sheet metal edges.
d. Inspect coil fins. If damaged during shipping and
handling, carefully straighten fins with a fin comb.
577E
Summary of Contents for 577E-A
Page 5: ...5 A190127 Fig 3 577E Unit Dimensions 577E ...
Page 6: ...6 A190128 Fig 4 577E 36 60 Unit Dimensions 577E ...
Page 7: ...7 A150039 Fig 5 577E B36 60 Unit Dimensions 577E ...
Page 21: ...21 A14593 Fig 16 208 230 1 60 Connection Wiring Diagram 577E ...
Page 22: ...22 A14594 Fig 17 Cont 208 230 1 60 Ladder Wiring Diagram 577E ...
Page 23: ...23 A14615 Fig 17 208 230 3 60 Connection Wiring Diagram Gas Inputs 40 60 90 KBtu hr 577E ...
Page 24: ...24 A14616 Fig 18 Cont 208 230 3 60 Ladder Wiring Diagram Gas Inputs 40 60 90 KBtu hr 577E ...
Page 25: ...25 A14618 Fig 18 208 230 3 60 Connection Wiring Diagram Gas Inputs 115 130 577E ...
Page 26: ...26 A14617 Fig 19 Cont 208 230 3 60 Ladder Wiring Diagram Gas Inputs 115 130 577E ...
Page 27: ...27 A13026 Fig 19 460 3 60 Connection Wiring Diagram 577E ...
Page 28: ...28 A13027 Fig 20 Cont 460 3 60 Ladder Wiring Diagram 577E ...
