CONQUEST 90 - Field Installed Accessory Connections; High Altitude Kits

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FIGURE73
JOHNSON CONTROLS
G961 DAJ•2401, and -2402
BLOWER OFF TIMINGS
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NOTE: SWITCHES 1 & 2 ARE USED
FOR TWINNING APPLICATIONS.
OFF TIME SWITCH3
SWITCH4
90 SEC.
ON
ON
120 SEC.
OFF
ON
160 SEC. ON
OFF
180 SEC
OFF OFF
FIGURE74
HONEYWELL E2001
BLOWER OFF TIMINGS
(TIMER IS
RED BLOCK
ON BOARD)
OFF TIME SWITCH1 SWITCH2
90 SEC.
ON
OFF
120 SEC. OFF
OFF
160 SEC.
OFF
ON
180 SEC.
ON
ON
FIELD INSTALLED ACCESSORY
CONNECTIONS
Electronic Air Cleaner
Connect the line voltage wiring of an
electronic air cleaner to the screw
terminal "EAC" and neutral on the
IFC. This powers the EAC whenever
the main blower operates.
Install the electronic air cleaner in
accordance with the manufacturer's
instructions.
Humidifier
Connect the line voltage wiring of a
humidifier to the screw terminal
"HUM" and neutral on the IFC. This
powers the humidifier whenever the
burners are on and the main blower
operates in the heating speed.
The Honeywell E2001, UTEC -920
and -927 IFC boards delay the
humidifier start for five seconds after
the blower starts. It terminates
humidifier operation 30 seconds
before the blower stops its heating
speed.
Install the humidifier in accordance
with the manufacturer's instructions.
ENSURE THAT NO WATER LIQUID
CAN COME IN CONTACT WITH
THE HEAT EXCHANGER,
HIGH ALTITUDE KITS,
RXGY • F04, -F05, -F06, •F07
90 Plus furnace installations at high
elevations need high altitude kits
installed for proper operation. The
high altitude kit consists of a high
altitude pressure switch to replace
the one attached to the induced draft
blower. It also contains high altitude
gas orifices. The pressure switch
must be installed at elevations of
5000 feet and above. The orifices
must be installed at elevations of
8000 feet and above.
TABLE 23
HIGH ALTITUDE KITS
HIGHAl TITUDE KIT FURNACEINPUTS
RXGY- F04 105,000BTUH
RXGY- F05 120,000BTUH
RXGY- F06 45,000/60.000/90.000BTUH
RXGY- F07 75.000 BTUH
To replace the pressure switch:
1. Turn off all power to the unit;
2. Remove the wiring from the
existing pressure switch;
3. Remove the hose connecting it
to the IDB.
ELECTRICAL COMPONENTS, OR
OTHER FURNACE PARTS.
NOTE: There is no "HUM" terminal
on the UTEC 1012-925 control.
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FIGURE 75
LINE VOLTAGE CONNECTIONS
4. Remove the screws mounting
the switch to the center panel;
5. Remove the pressure switch;
HONEYWELL S9201E2001, UTEC 1012-920, 1028-927, 1028-928
CONTROL BOARDS
-----NEUT~ALS
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(8)
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11
I,
11
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EAC
FAt-..
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~l2
1677
UTEC 1012-925 CONTROL BOARD
NEUTRALS
i i f i
JOHNSON CONTROLS G961 DAJ-2401, AND -2402 CONTROL BOARDS
1334
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