Routing Power Leads Into Unit; Connecting Ground Lead To Ground Screw; Routing Control Power Wires; Accessory Installation - Bryant EVOLUTION 577D024040 Installation Instructions Manual

NOMINAL INTERNAL
IRON PIPE DIAMETER
10
SIZE (IN.) (IN.)
(3.0)
1/2 .622 175
3/4 .824 360
1 1.049 680
1--- 1/4
1.380 1400
1--- 1/2
1.610 2100
*Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5 ---in. wg (based on a 0.60 specific gravity gas). Refer to Table,
NFPA 54/ANSI Z223.1.
{ This length includes an ordinary number of fittings.

ROUTING POWER LEADS INTO UNIT

Use only copper wire between disconnect and unit. The high
voltage leads should be in a conduit until they enter the duct panel;
conduit termination at the duct panel must be watertight. Run the
high- -voltage leads through the power entry knockout on the
power entry side panel. See Fig. 5 and 6 for location and size. For
single- -phase units, connect leads to the black and yellow wires.

CONNECTING GROUND LEAD TO GROUND SCREW

Connect the ground lead to the chassis using the ground screw on
the control plate near the inducer switch (See Fig. 13).

ROUTING CONTROL POWER WIRES

For detailed instruction on the low voltage connections to the User
Interface (UI), refer to the UI installation guide.
Form a drip- -loop with the control leads before routing them into
the unit. Route the low voltage control leads through grommeted,
low- -voltage hole provided into unit (See Fig. 5 and 6). Connect
user interface leads to unit control power leads as shown in Fig. 14.
The unit transformer supplies 24- -v power for complete system
including accessory electrical heater. Transformer is factory wired
for 230- -v operation. If supply voltage is 208- -v, rewire transformer
primary as described in Special Procedures for 208- -v Operation
section.
The furnace board is fused by a board- -mounted automotive fuse
placed in series with transformer SEC1 and R circuit. The C circuit
of transformer circuit is referenced to chassis ground through a
printed circuit run at SEC2 and gas valve grounding wire. Check to
be sure control board is mounted securely using both
factory- -installed screws.

ACCESSORY INSTALLATION

A. Outdoor Air Thermistor (OAT)
CAUTION
!
EQUIPMENT OPERATION HAZARD
The installation of an outdoor temperature sensor using the
Evolution control board OAT terminals is required. Many
Evolution features (auto humidity control, comfort rollback,
ETC.) will be lost if the OAT is not connected.
For detailed mounting instructions for the OAT sensor,
please refer to TSTATXXSEN01- -B installation instructions
(catalog no. 63TS- -TA13): Procedures 1 through 3.
Table 2 – Maximum Gas Flow Capacity*
20 30 40 50
(6.1) (9.1) (12.1) (15.2)
120 97 82 73
250 200 170 151
465 375 320 285
950 770 600 580
1460 1180 990 900
LENGTH OF PIPE ft (m)†
60 70 80 90
(18.3) (21.3) (24.4) (27.4)
66 61 57 53
138 125 118 110
260 240 220 205
530 490 460 430
810 750 690 650
The OAT input is used to supply outdoor temperature data for
system level functions and for temperature display on User
Interface (UI). Using two wires of the field- -supplied thermostat
wire cable, wire the ends of the two black OAT pigtails. Wire the
opposite ends of these two wires to the OAT provided with the UI.
There is no polarity to be observed.
NOTE: Mis- -wiring OAT inputs will not cause damage to either
Evolution control or thermistor. If the thermistor is wired
incorrectly, no reading will appear at UI. Re- -wire thermistor
correctly for normal operation.
B. Humidifier Connections
The furnace control board terminal marked HUM is provided for
low voltage (24- -vac) control of a humidifier. No humidistat is
required as UI monitors indoor humidity.
When commanded to operate humidifier, the unit control will
energize the HUM output to turn humidifier on and de- -energize
HUM output to turn humidifier off. Wire HUM and COM
terminals directly to humidifier as shown in Fig. 14.
C. Electronic Air Cleaner
Electronic Air Cleaner terminals are provided on the Evolution
Control Board (EAC- -1 and EAC- -2). While these terminals can be
used to power a 230V EAC, it is recommended that any EAC be
installed per the EAC installation instructions and connected
separately to a standard 115V or 230V outlet with an airflow
sensor to control operation of the EAC.

SPECIAL PROCEDURES FOR 208- -V OPERATION

Be sure unit disconnect switch is open.
Disconnect the black primary lead from the transformer. See unit
wiring label (See Fig. 16 and 17).
Connect the black primary lead to the transformer terminal labeled
208- -v.
12
100 125 150 175
(30.5) (38.1) (45.7) (53.3)
50 44 40 —
103 93 84 77
195 175 160 145
400 360 325 300
620 550 500 460
200
(61.0)
—
72
135
280
430