Table 8
Normal Operating Pressures
80°F db / 67°F wb RETURN AIR |
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UNIT | PRESSURE | 65 | 70 | 75 | 80 | 82 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | |
15GCSX−24 |
| 142 | 143 | 144 | 146 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | |
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15GCSX−30 |
| 134 | 136 | 138 | 140 | 141 | 142 | 144 | 146 | 148 | 149 | 151 | 152 | |
15GCSX−36 | Suction | 143 | 144 | 146 | 147 | 148 | 149 | 151 | 152 | 155 | 155 | 157 | 157 | |
15GCSX−42 | 140 | 140 | 140 | 141 | 141 | 141 | 142 | 142 | 143 | 144 | 145 | 147 | ||
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15GCSX−48 |
| 133 | 134 | 136 | 137 | 138 | 139 | 139 | 140 | 141 | 142 | 144 | 145 | |
15GCSX−60 |
| 134 | 136 | 138 | 140 | 141 | 142 | 144 | 145 | 147 | 148 | 150 | 151 | |
15GCSX−24 |
| 219 | 242 | 264 | 287 | 296 | 310 | 333 | 355 | 379 | 398 | 430 | 457 | |
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15GCSX−30 |
| 232 | 255 | 277 | 300 | 309 | 323 | 345 | 368 | 390 | 408 | 440 | 470 | |
15GCSX−36 | Liquid | 244 | 268 | 292 | 316 | 326 | 340 | 363 | 369 | 410 | 429 | 461 | 493 | |
15GCSX−42 | 225 | 247 | 269 | 291 | 300 | 314 | 337 | 357 | 383 | 402 | 434 | 457 | ||
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15GCSX−48 |
| 236 | 256 | 277 | 297 | 305 | 320 | 344 | 370 | 393 | 412 | 449 | 480 | |
15GCSX−60 |
| 246 | 269 | 291 | 314 | 323 | 337 | 360 | 385 | 407 | 424 | 457 | 484 |
Heating Start−Up
Pre−Start Check List:
1 − Check the type of gas being supplied. Be sure it is the same as listed on the unit nameplate.
2 − Make sure the vent hood has been properly installed.
FOR YOUR SAFETY READ BEFORE LIGHTING
BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell around the base of the unit because some gas is heavier than air and will settle down low.
!WARNING
Electric shock hazard. Can cause injury or death. Do not use this unit if any part has been under water. Immediately call a qualified service technician to inspect the unit and to replace any part of the con- trol system and any gas control which has been under water.
!WARNING
Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies.
Use only your hand to turn the gas valve knob. Never use tools. If the knob will not move by hand, do not try to repair the gas valve. Call a qualified service technician. Force or attempted repair may result in a fire or explosion.
This furnace is equipped with a direct ignition control. Do not attempt to manually light the burners.
1 − Turn off electrical power to unit.
2 − Set thermostat to lowest setting.
3 − Turn the gas valve knob to the ON position. Refer to figure 13.
4 − Turn on electrical power to unit.
5 − Set room thermostat to desired temperature. (If thermostat setpoint temperature is above room temperature after the pre−purge time expires, main burners will light).
!WARNING
Danger of explosion and fire. Can cause injury or product or property damage. You must follow these instructions exactly.
!WARNING
Danger of explosion. Can cause injury or product or property damage. If overheating occurs or if gas supply fails to shut off, shut off the manual gas valve to the appliance before shutting off electrical supply.
Honeywell VR8205 Series Gas Valve
HIGH FIRE
ADJUSTING SCREW (under cap)
OUTLET
(MANIFOLD)
PRESSURE
TAP
LOW FIRE ADJUSTING SCREW (under cap)
INLET PRESSURE TAP
GAS VALVE SHOWN IN OFF POSITION
Figure 13
Page 17