Johnson Controls ZZ Series, Installation Manual

Page: 59 / 69

5834853-YIM-B-0320
Johnson Controls Ducted Systems 59
Troubleshooting
Troubleshooting of components may require opening
the electrical control box with the power connected to
the unit.
Use extreme care when working with live
circuits! Check the unit nameplate for the correct line
voltage and set the voltmeter to the correct range before
making any connections with line terminals.
When not necessary, shut off all electric power to the
unit prior to any of the following maintenance
procedures so as to prevent personal injury.
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation, which could cause injury to person
and/or damage unit components. Verify proper
operation after servicing.
The furnace may shut down on a high temperature
condition during the procedure. If this occurs, the UCB
energize the supply air blower motor until the high
temperature limit has reset. Caution should be used at
all times as the supply air blower may energize
regardless of the room thermostat fan switch position.
Table 19: ZZ07 Charging Table
Air Flow
Indoor Db/Wb
Outdoor DB Suction P Suction Temp. Liquid P Liquid Temp. Delta T Db Compr. amps
300 Cfm/Ton
80/62
75 132 70 283 84 -24 11.1
85 135 66 329 94 -25 12.6
95 137 62 375 104 -25 14.1
300 Cfm/Ton
80/67
75 133 69 282 85 -25 10.9
85 138 66 330 95 -24 12.5
95 143 63 378 104 -22 14.2
300 Cfm/Ton
80/72
75 133 69 282 86 -25 10.7
85 141 66 331 96 -22 12.5
95 148 64 381 105 -20 14.3
300 Cfm/Ton
75/62
75 127 66 281 83 -22 11.1
85 130 62 328 93 -22 12.6
95 134 59 375 103 -22 14.1
400 Cfm/Ton
80/62
75 137 73 285 84 -22 11.3
85 141 71 331 94 -21 12.7
95 145 69 378 104 -21 14.2
400 Cfm/Ton
80/67
75 138 72 286 85 -21 11.2
85 143 70 333 95 -20 12.7
95 148 68 379 105 -19 14.2
400 Cfm/Ton
80/72
75 139 72 287 86 -21 11.1
85 145 69 334 96 -19 12.7
95 152 67 381 106 -18 14.3
400 Cfm/Ton
75/62
75 132 69 283 84 -19 11.2
85 136 67 329 94 -19 12.7
95 140 65 376 103 -18 14.1