Gas Supply & Piping (cont.)
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| GAS | PtPE SIZES |
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| NATURAL | GAS |
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| PIPE CAPACITY - BTU PER HOUR |
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| (INCLUDES | FITTINGS) |
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| PIPE | SIZE |
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LENGTH | OF |
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PIPE | - | FEET | 1/2 inch |
| 3/4 inch | 1 inch | |
| 20 |
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| 92,000 |
| 190,000 | 350,000 |
| 40 |
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| 63,000 |
| 130,000 | 245,000 |
| 60 |
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| 50,000 |
| 105,000 | 195,000 |
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| L.P. | GAS |
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| PIPE CAPACITY - BTU PER HOUR |
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| (INCLUDES | FITTINGS) |
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LENGTH | OF |
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PIPE | - | FEET | 112 inch |
| 3/4 inch | 1 inch | |
| 20 |
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| 189,000 |
| 393,000 | 732,000 |
| 40 |
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| 129,000 |
| 267,000 | 504,000 |
| 60 |
| 103,000 |
| 217,000 | 409,000 | |
GAS CONNECTION
If installation is for L.P. Gas have L.P. installer use two-
stage regulation and make all connections from storage tank to furnace.
Use two pipe wrenches when making the connection to the valve to prevent turning or damage to gas valve. Connection between shut off valve and burner control assembly can be made with an A.G.A./C.G.A. design cer- tified flexible connector if allowed by local codes.
Tighten all joints securely.
CHECKING THE GAS PIPING
Test all piping for leaks. When checking gas piping to the furnace with gas pressure at less than 1/2 PSI, shut off manual gas valve for the furnace. If gas piping is to be checked with the pressure at or above 1/2 PSI, the furnace and manual shut off valve must be disconnected during testing. (SEE WARNING BELOW.) Apply soap suds (or a liquid detergent) to each joint. Bubbles forming indicates a leak. Correct even the slightest leak at once.
WARNING
DANGER OF PROPERTY DAMAGE,
BODILY INJURY OR DEATH.
NEVER USE A MATCH OR OPEN FLAME TO TEST FOR LEAKS. NEVER EXCEED SPECIFIED PRESSURES FOR TESTING. HIGH PRESSURES MAY DAMAGE THE GAS VALVE AND CAUSE
CHANGER FAILURE. LIQUID PETROLEUM (L.P.) GAS IS HEAVIER THAN AIR AND IT WILL
IN ANY LOW AREA, INCLUDING OPEN DEPRES- SION AND IT WILL REMAIN THERE UNLESS AREA IS VENTILATED.
NEVER ATTEMPT
Thermostat Installation
MODELS 1403622, 1403621, 2203622, 2203621, 3003622 and 3003621
(All other models are equipped with a
1.If an old thermostat is being replaced and is in'a satisfactory location and the wiring appears to be in good condition, use existing wiring. If in doubt, use new wire.
2.If a new location is chosen or if this is a new installa- tion, thermostat cable must first be run to the location
selected. All wiring must agree with local codes and ordinances. These instructions cover bringing the wire down from the attic but it can be run from a basement
or crawl space using similar methods.
3.Before drilling hole in wall at selected location, drive a small finishing nail through the ceiling in the corner of the wall and ceiling above the thermostat location.
Pull the nail out and push a small stiff wire through the hole so it can be found in the attic. Drill a 1/2 inch hole
through the ceiling wall plate.
4.Probe for obstructions in the partition. Then drill a
112 inch hole through wall at selected location for thermostat.
5.From the attic, feed the thermostat cable or a stiff wire through the wall until even with thermostat location.
ROUTE THERMOSTAT CABLE
SMAL I.
FINISH
NAi l, 10
LOCATE
H_ADER
CABL[
STIF WtRE
10 SNAG
CABLE
