Nordyne G6RD 93+ Start-Up Procedure, Verifying and Adjusting Firing Rate, Electrical Data

Furnace	Cabinet	Nominal	Maximum	Minimum	Maximum	Minimum	Maximum
Input	Width	Electrical	Operating	Operating	Furnace	Wire	Fuse or Circuit
(Btuh)	(in.)	Supply	Voltage	Voltage	Amperes	Gauge	Breaker Amps*
40,000	14.25	115-60-1	127	103	12.2	14	15
60,000	14.25	115-60-1	127	103	12.2	14	15
80,000	19.75	115-60-1	127	103	14.1	14	15
100,000	19.75	115-60-1	127	103	14.1	14	15
120,000	22.50	115-60-1	127	103	17.3	12	20

* Time-delay fuses or HACR-type circuit breakers are required.

Thermostat	Recommended Thermostat
Wire	Wire Length
Gauge	2-wire	4 or 5-wire
	(heating)	(cooling)

24

22

20

18

55 ft.	25 ft.
90 ft.	45 ft.
140 ft.	70 ft.
225 ft.	110 ft.

Table 11. Electrical Data

A/C Condensing Unit

Condensing Unit

Control Box

COM

Blower Off

60 90 120 180

R

R

3 Amp

Timing

Connect

C

24 V

Fuse

TWIN

Y

R & W

Y

For

G

Flame Signal Light

Heating

W

G

(Yellow)

Only

Room

W

Status Light

9

6

3

(Red)

Thermostat

8

5

2

7

4

1

NOTE: The "Y"

terminal on the

EAC

UTEC control board

must be connected

Neutrals

to the thermostat.

HUM

HUM

M3 M2 M1

COOL

HEAT

XFMR EAC

L1

FIELD WIRING

Unused Motor Leads

6

3

Low Voltage

5

2

Connections

4

1

Figure 24. Low Voltage Field,

Four-wire Heating/Cooling Applications

2.The thermostat wires (R, W, Y, and G) are securely connected to the correct leads on the terminal strip of the circuit board.

3.The gas line service pressure does not exceed 10.0 in. water column (0.36 psig), and is not less than 4.5 in. water column (0.16 psig) for natural gas. For LP gas the line service pressure must not exceed 14 in. water column (0.51 psig), and must not be less than 11.0 in. W.C. (0.40 psig).

4.The roll-out and vent safety manual reset switches are closed. If necessary, press the red button to reset a switch. See Figure 28

for location. DO NOT install a jumper wire across a switch to defeat its function. If a switch reopens on start-up, DO NOT reset the switch without identifying and correct- ing the fault condition which caused the switch to trip.

5.The blower door is in place, closing the door switch in the line voltage circuit.

6.The gas line has been purged and all con- nections are leak tight.

Start-Up Procedure

1.Set the thermostat to the lowest setting.

2.Close the disconnect(s) to provide line volt- age to the furnace.

3.Follow the procedures given on the operat- ing instructions label attached to the furnace.

4.Set the thermostat above room tempera- ture and verify the sequence of operation. (See the SEQUENCE OF OPERATION.)

5.After the furnace has run for approximately five minutes, set the thermostat below room temperature and verify steps (9) through (11) of the SEQUENCE OF OPERATION.

Verifying and Adjusting

Firing Rate

The firing rate must be verified for each installa- tion to prevent over-firing the furnace.

NOTE: The firing rate must not exceed the rate shown on the furnace rating plate. At altitudes above 2000 ft. the firing rate must be adjusted as described in the high altitude section.

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