Bryant SYSTXBBNIM01 Iii. Install Components, Iv. Ventilator Hrv/Erv Wiring, System Start-Up, Fuse

The following color-code is recommended for each ABCD bus connection:

A — Green = Data A

B — Yellow = Data B

C — White = 24VAC (Common) D — Red = 24VAC (Hot)

It is not mandatory that the above color code be used, but each ABCD connector in the system MUST be wired consistently. NOTE: Improper wiring of the ABCD connector will cause the Evolution System to operate improperly. Check to make sure all wiring is correct before proceeding with installation or turning on power.

III.INSTALL COMPONENTS

INSTALL NETWORK INTERFACE MODULE — Plan wire routing before mounting. The Evolution Network Interface Mod- ule is designed so that wires can enter it from the sides.

1.Remove top cover and mount NIM to wall using screws and wall anchors provided.

IV. VENTILATOR (HRV/ERV) WIRING

HRV / ERV INSTALLATION — The NIM can control a Bryant Heat Recovery Ventilator / Energy Recovery Ventilator (HRV / ERV). Connect four wires from ventilator control board (see ventilator installation instructions for details) to connector labeled (YRGB). This label identifies the color of the wire to match the ventilator wire colors (Y=yellow, R=red, G=green, B=blue or black). See Fig. 2 for ventilator (HRV / ERV) connection.

NOTE: If system is zoned (contains an Evolution Damper Con- trol Module), the ventilator may be connected either directly to the Damper Control module or to the NIM. In either case, the Evolution Zone Control will properly discover the ventilator.

V. DUAL FUEL WITH 1-SPEED HEAT PUMP WIRING

DUAL FUEL INSTALLATION WITH 1-SPEED HEAT PUMP — The NIM is needed when a variable-speed furnace is applied with a Bryant single-speed(non-communicating) heat pump. See Fig. 3 for wiring details. An outdoor air temperature sensor MUST be connected to furnace control board for proper operation (see Fig. 5 for details).

VI. VARIABLE-SPEED INDOOR UNIT WITH 2-SPEED OUTDOOR UNIT WIRING

2-SPEED NON-COMMUNICATING OUTDOOR UNIT — The NIM can control a 2-speednon-communicating air condi- tioner or heat pump (R-22Series-A unit) with a variable-speed indoor unit. See Fig. 4 for wiring details.

SYSTEM START-UP

Follow the system start-up process outlined in the Evolution Zone Control or Evolution Control installation instructions.

LED INDICATORS

Under normal operation, the Yellow and Green LEDs will be on continuously (solid). If the NIM does not successfully communi- cate with the Evolution Control, the Green LED will not be on. If there are faults present, the Yellow LED indicator will blink a two-digit status code. The first digit will blink at a fast rate, the second at a slow rate.

STATUS CODE	DESCRIPTION
16 =	Communication Failure
45 =	Board Failure
46 =	Low Input Voltage

FUSE

A 3-amp automotive type fuse is used to protect the NIM from overloading the outdoor unit R output. If this fuse fails, there is likely a short in the wiring to the device being controlled by the NIM. After short in wiring is fixed, fuse should be replaced with an identical 3 amp automotive fuse.

24 VAC POWER SOURCE

The NIM receives its 24 VAC power from the indoor unit C and D terminals (via ABCD connector bus). In most applications, there is sufficient power (VA capacity) available from the indoor unit transformer to accommodate a ventilator and / or outdoor unit connection. No additional transformer is required.

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