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Hersteller: Allied Air Enterprises Dateigröße: 3.02 mb Dateiname: Unterrichtssprache:

9. After determining that each appliance remaining connected to the common venting system properly vents when tested as indicated in step 3, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous condition of use. 506724-01 Issue 1108 Page 45 of 57 Page 46 of 57 Issue 1108 506724-01 Other Unit Adjustments Primary Limit The primary limit is located on the heating compartment vestibule panel. This limit is factory set and requires no adjustment. Flame Rollout Switches (Two) These manually reset switches are located on the front of the burner box. These limits are factory set and require no adjustment. Pressure Switch The pressure switch is located in the heating compartment on the cold end header box. This switch checks for proper combustion air inducer operation before allowing ignition trial. The switch is factory set and must not be adjusted. Temperature Rise After the furnace has been started and supply and return air temperatures have been allowed to stabilize, check the temperature rise. If necessary, adjust the blower speed to maintain the temperature rise within the range shown on the unit nameplate. Increase the blower speed to decrease the Thermostat Heat Anticipation Set the heat anticipator setting (if adjustable) according to the amp draw listed on the wiring diagram that is attached to the unit. Electrical 1. Check all wiring for loose connections. 2. Check for the correct voltage at the furnace (with furnace operating). Correct voltage is 120 VAC ± 10% 3. Check amp–draw on the blower motor with the blower access panel in place. Motor Nameplate__________Actual__________ Blower Speeds Follow the steps below to change the blower speeds. 1. Turn off electrical power to furnace. 2. Remove blower access panel. 3. Disconnect existing speed tap at control board speed terminal. NOTE: Termination of any unused motor leads must be insulated. 4. Place unused blower speed tap on integrated control “PARK” terminal or insulate. 5. Refer to blower speed selection chart on unit wiring diagram for desired heating or cooling speed. See Blower performance data beginning on the next page. 6. Connect selected speed tap at control board speed terminal. 7. Re-secure blower access panel. 8. Turn on electrical power to furnace. 9. Recheck temperature rise. Electronic Ignition The integrated control has an added feature of an internal Watchguard control. The feature serves as an automatic reset device for integrated control lockout caused by ignition failure. This type of lockout is usually due to low gas line pressure. After one hour of continuous thermostat demand for heat, the Watchguard will break and remake thermostat demand to the furnace and automatically reset the integrated control to begin the ignition sequence. Exhaust and Air Intake Pipe 1. Check exhaust and air intake connections for tightness and to make sure there is no blockage. 2. Is pressure switch closed? Obstructed exhaust pipe will cause unit to shut off at pressure switch. Check termination for blockages. 3. Obstructed pipe or termination may cause rollout switches to open. Reset manual flame rollout switches on burner box assembly if necessary. the temperature. Decrease the blower speed to increase the temperature rise. Failure to adjust the temperature rise may cause erratic limit operation. Fan Control The fan ON time of 30 seconds is not adjustable. The fan OFF delay (amount of time that the blower operates after the heat demand has been satisfied) may be adjusted by changing the jumper position across the five pins on the integrated control. The unit is shipped with a factory heat fan OFF setting of 120 seconds. The fan OFF delay affects comfort and is adjustable to satisfy individual applications. Adjust the fan OFF delay to achieve a supply air temperature between 90° and 110° F at the moment that the blower is de-energized. Longer OFF delay settings provide lower return air temperatures; shorter settings provide higher return air temperatures. See Figure 58. HEAT FAN-OFF TIME IN SECONDS To adjust fan.off timing, reposition jumper across pins to achieve desired setting. NO JUMPER FIGURE 58 60 90 120 180 60 90 120 180 60 90 120 180 60 90 120 180 60 Second off Time 90 Second off Time 120 Second off Time 180 Second off Time BLOWER DATA A93UH1D / 92G1UH A93UH1D / 92G1UH 090*12C PERFORMANCE (Less Filter) External Static Pressure in. w.g. Air Volume / Watts at Various Blower Speeds High Medium- High Medium- Low Low cfm Watts cfm Watts cfm Watts cfm Watts 0.00 1620 745 1340 620 1130 500 965 405 0.10 1610 720 1335 595 1135 490 975 395 0.20 1565 695 1335 565 1145 465 970 385 0.30 1525 665 1300 555 1135 455 970 370 0.40 1485 635 1295 520 1110 435 960 355 0.50 1431 600 1260 495 1090 405 940 345 0.60 1365 570 1210 475 1035 390 900 330 0.70 1295 535 1155 445 995 365 860 305 0.80 1200 505 1065 415 930 340 745 270 0.90 1060 460 955 375 820 305 695 260 A93UH1D / 92G1UH 045*08B PERFORMANCE (Less Filter) Ex...

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