TABLE 2ÐMAXIMUM CAPACITY OF PIPE
(CU FT PER HR)*
NOMINAL |
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IRON | INTERNAL |
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PIPE | DIAMETER |
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SIZE | (IN.) | 10 |
| 20 | 30 | 40 | 50 |
(IN.) |
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1/2 | 0.622 | 175 |
| 120 | 97 | 82 | 73 |
3/4 | 0.824 | 360 |
| 250 | 200 | 170 | 151 |
1 | 1.049 | 680 |
| 465 | 375 | 320 | 285 |
1.380 | 1400 |
| 950 | 770 | 660 | 580 | |
1.610 | 2100 |
| 1460 | 1180 | 990 | 900 | |
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CAUTION: If a flexible connector is required or al- lowed by authority having jurisdiction, black iron pipe shall be installed at gas valve and extend a minimum of 2 in. outside furnace casing.
An accessible manual shutoff valve MUST be installed upstream of furnace gas controls and within 6 ft of furnace. A
*For gas pressures of 0.5 psig
GAS
SUPPLY
MANUAL
SHUTOFF
VALVE (REQUIRED)
SEDIMENT
TRAP
UNION
A93324
Fig. 23ÐTypical Gas Pipe Arrangement
NOTE: The gas valve inlet press tap connection is suitable to use as test gage connection providing test pressure DOES NOT exceed maximum 0.5 psig
ELECTRICAL CONNECTIONS
See Fig. 24 for field wiring diagram showing typical field
WARNING: Blower access panel door switch opens
FIELD
FIELD
FACTORY
FACTORY
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| NOTE 2 |
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| THERMOSTAT |
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| FIVE |
| W C R | G | Y | ||
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| TERMINALS | |||||
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| WIRE |
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| DISCONNECT |
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| 208/230- OR | |
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| HEATING- |
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| ONLY |
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| THREE |
BLK | BLK |
| W |
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| PHASE |
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WHT | WHT |
| R |
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| GND | GND |
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| SINGLE |
| AUXILIARY | G |
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| PHASE | |
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C | NOTE 1 |
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DISCONNECT | CONTROL | Y |
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| CONDENSING | |||
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| BOX |
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| UNIT |
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| TWO |
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| TERMINAL |
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| WIRE |
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| BLOCK | NOTES: 1. | Connect | |||
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| FURNACE | ||||||
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| 2. Some thermostats require a "C" terminal connection as shown. | |||||
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3.If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.
A98209
Fig. 24ÐHeating and Cooling Application Wiring Diagram
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