Carrier 58UVB series Installation, Start-up, And Operating Instructions Manual

Also see for 58UVB series: Owner's information manual Owner's manual Installation, start-up, and operating instructions

Contents

Carrier 58UVB series Installation, Start-up, And Operating Instructions Manual Manual pdf 48 page image

48TABLE 13—GAS RATE CU FT/HRSECONDS SIZE OF TEST DIAL SECONDS SIZE OF TEST DIALFOR 1 1 2 5 FOR 1 1 2 5REVOLUTION cu ft cu ft cu ft REVOLUTION cu ft cu ft cu ft10 360 720 1800 50 72 144 36011 327 655 1636 51 71 141 35512 300 600 1500 52 69 138 34613 277 555 1385 53 68 136 34014 257 514 1286 54 67 133 33315 240 480 1200 55 65 131 32716 225 450 1125 56 64 129 32117 212 424 1059 57 63 126 31618 200 400 1000 58 62 124 31019 189 379 947 59 61 122 30520 180 360 900 60 60 120 30021 171 343 857 62 58 116 29022 164 327 818 64 56 112 28123 157 313 783 66 54 109 27324 150 300 750 68 53 106 26525 144 288 720 70 51 103 25726 138 277 692 72 50 100 25027 133 267 667 74 48 97 24328 129 257 643 76 47 95 23729 124 248 621 78 46 92 23130 120 240 600 80 45 90 22531 116 232 581 82 44 88 22032 113 225 563 84 43 86 21433 109 218 545 86 42 84 20934 106 212 529 88 41 82 20535 103 206 514 90 40 80 20036 100 200 500 92 39 78 19637 97 195 486 94 38 76 19238 95 189 474 96 38 75 18839 92 185 462 98 37 74 18440 90 180 450 100 36 72 18041 88 176 439 102 35 71 17842 86 172 429 104 35 69 17343 84 167 419 106 34 68 17044 82 164 409 108 33 67 16745 80 160 400 110 33 65 16446 78 157 391 112 32 64 16147 76 153 383 116 31 62 15548 75 150 375 120 30 60 15049 73 147 3673. This furnace is capable of automatically providing properairflow to maintain the temperature rise within the rangespecified on furnace rating plate. If temperature rise isoutside this range, proceed as follows:a. Check gas input for low-- and high--heat operation.b. Check derate for altitude if applicable.c. Check all return and supply ducts for excessiverestrictions causing static pressure greater than 0.5--in.wc.d. Ensure Low Heat Rise Adjust switch SW1--3 onfurnace control is in ON position when a bypasshumidifier is used. (See Fig. 33 for switch location.)e. Check Troubleshooting Guide for Variable--Speed2--Stage Electronic Condensing Furnaces Series 100.SET THERMOSTAT HEAT ANTICIPATORWhen using a non--electronic thermostat, the thermostat heatanticipator must be set to match the amp draw of components inthe R--W/W1 circuit. Accurate amp draw measurements can beobtained only at the thermostat subbase terminals R and W.The thermostat and anticipator should NOT be in the circuit whilemeasuring current. If thermostat has no subbase, the thermostatmust be disconnected from R and W/W1 wires during currentmeasurement.Fig. 54 illustrates an easy method of obtaining thermostat ampdraw measurements. The amp reading should be taken afterblower motor has started and furnace is operating in low--heat.1. To operate furnace in low--heat, turn setup switch SW1--2to ON position (See Fig. 33) and connect ammeter leadsacross thermostat subbase R--W.2. See thermostat manufacturer’s instructions for adjustingthe heat anticipator and for varying heating cycle length.NOTE: When using an electronic thermostat, set cycle rate for 3cycles per hr.3. Return setup switch SW1--2 to OFF position and replacethermostat on subbase.Step 7 —Check Safety ControlsThis section covers the safety controls that must be checkedbefore the installation is complete. The flame sensor, gas valve,and pressure switches were all checked in the Start--up proceduresection as part of normal operation.CHECK PRIMARY LIMIT CONTROLThis control shuts off the gas control system and energizes theair--circulating blower motor if furnace overheats.58UVB

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