Sizing Between Single or Second Stage Regulator and Appliance*
Maximum Propane Capacities Listed are Based on 1/2" W.C. pressure drop at 11" W.C. setting. Capacities in 1,000 BTU/hour.
Pipe or |
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Tubing |
| Tubing Size, O.D. Type L |
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| Schedule 40 |
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Length, | 3/8" | 1/2" | 5/8" | 3/4" | 7/8" | 1/2" | 3/4" | 1" | |||
Feet |
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10 | 39 | 92 | 199 | 329 | 501 | 935 | 275 | 567 | 1,071 | 2,205 | 3,307 |
20 | 26 | 62 | 131 | 216 | 346 | 630 | 189 | 393 | 732 | 1,496 | 2,299 |
30 | 21 | 50 | 107 | 181 | 277 | 500 | 152 | 315 | 590 | 1,212 | 1,858 |
40 | 19 | 41 | 90 | 145 | 233 | 427 | 129 | 267 | 504 | 1,039 | 1,559 |
50 | 18 | 37 | 79 | 131 | 198 | 376 | 114 | 237 | 448 | 913 | 1,417 |
60 | 16 | 35 | 72 | 121 | 187 | 340 | 103 | 217 | 409 | 834 | 1,275 |
80 | 13 | 29 | 62 | 104 | 155 | 289 | 89 | 185 | 346 | 724 | 1,066 |
100 | 11 | 26 | 55 | 90 | 138 | 255 | 78 | 162 | 307 | 630 | 976 |
125 | 10 | 24 | 48 | 81 | 122 | 224 | 69 | 146 | 275 | 567 | 866 |
150 | 9 | 21 | 43 | 72 | 109 | 202 | 63 | 132 | 252 | 511 | 787 |
200 | 8 | 19 | 39 | 66 | 100 | 187 | 54 | 112 | 209 | 439 | 665 |
250 | 8 | 17 | 36 | 60 | 93 | 172 | 48 | 100 | 185 | 390 | 590 |
*Data in accordance with NFPA pamphlet NO. 54
WARNING
To prevent death, serious personal injury or property damage due to fire or explosion caused by a propane gas leak, install a gas detecting warning device.
WARNING
If the propane gas furnace is installed in a basement, an excavated area or a confined space, a warning device is required due to:
•Propane gas is heavier than air and any leaking gas can settle in any low areas or confined spaces.
•Propane gas odorant may fade, making the gas undetectable except with a
warning device.
If the presence of gas is suspected, follow the instructions on Page 2 of this manual.
VIl. Electrical Wiring
WARNING
To prevent death or personal injury due to electric shock, disconnect electrical power before changing any electrical wiring.
CAUTION
When servicing controls, label all wires before disconnecting. Wiring errors can cause improper and dangerous operation. After servicing is completed, always verify proper operation.
Power supply to the furnace must be NEC Class 1, and must comply with all applicable codes. The furnace must be electrically grounded in accordance with the local codes or, in their absence, with the latest edition of the National Electrical Code, ANSI NFPA No. 70 and/or the CSA C22. 1 Electrical Code. A fused disconnect must be provided and sized in accordance with the unit maximum overcurrent protection.
Figure 20
Typical Field Wiring
(24 VAC Control Circuit)
A 40 VA transformer and an integrated electronic control are built into the furnace to allow use with most cooling equipment.
CAUTION
To avoid the risk of electrical shock, wiring to the unit must be properly polarized and grounded.
To provide more reliable sensing of flame, the ground wire must run to the electrical panel.
Line voltage wiring must enter into the junction box pro- vided with the furnace.
As shipped, the junction box is attached to the left side of the furnace (as viewed for an upflow installation). If this is suitable for your installation, no changes are necessary.
If the line voltage wiring is to enter through the right side of the furnace (as viewed for an upflow installation), relocate the junction box as shown in Figure 21.
Junction
Box
The unit wiring harness is an integral part of the furnace. Field alteration to comply with electrical codes should not be required.
Figure 21
Junction Box (Left Side)
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