Bryant 598A Series D, Installation And Start-Up Instructions Manual

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IX. MAKE AIRFLOW SELECTIONS
A. Airflow Selection for 333(B,J)AV Furnaces
The 333(B,J)AV Non-Condensing Variable-Speed Furnaces pro-
vide high- and low-speed blower operation to match the capacities
of compressor high and low speeds. To select recommended
airflow, refer to Table 3 and the 333(B,J)AV Installation Instruc-
tions. These settings are made on the furnace airflow selector
board by moving the appropriate color-coded jumper wires. The
ORANGE jumper wire should be set to the AC position for
cooling only. The YELLOW COOL SIZE jumper is used to select
airflow to match the needed tons of cooling. The BLUE
CFM/TON jumper wire is used to select slight adjustments to
airflow of 400, 350, or 315 CFM per ton. (See Table 3.)
B. Airflow Selection for 355MAV Furnaces
The 355MAV Condensing Variable-Speed Furnaces provide high-
and low-speed blower operation to match the capacities of com-
pressor at high and low speeds. To select recommended airflow,
refer to Table 4 and the 355MAV Installation Instructions. The
355MAV utilizes a control center that allows the installing
technician to select proper airflows.
For adjustments to the manual switches labeled A/C and CF and
recommended switch positions, refer to Table 4. High-speed
airflow is determined by the position of the A/C switches, and
low-speed airflow is determined by the position of the CF
switches. This furnace has a built-in, non-adjustable 90 sec off
delay for cooling mode blower operation.
C. Airflow Selection for FK4C Fan Coils
The FK4C provides high- and low-speed blower operation to
match the capacities of compressor at high and low speeds. To
select recommended airflow, refer to Table 5 and the FK4C
Installation Instructions. The FK4C utilizes an EASY SELECT
control board that allows the installing technician to select proper
airflows. For adjustments to control board and recommended A/C
SIZE and CFM ADJUST selections, refer to Table 5. This fan coil
has an adjustable blower off delay factory set at 90 sec for high-
and low-speed blower operation.
TABLE 3—AIRFLOW SELECTION FOR 333(B,J)AV FURNACES (CFM)
598A
UNIT
SIZE
FURNACE
MODEL/HEATING
SIZE
FURNACE AIRFLOW SELECTION BOARD SETTINGS
AC/HP
Jumper
Position
Cool Size
Jumper
Position
Cool CFM Per Ton Jumper Position
400 350 315
High Low High Low High Low
036
060 AC HI 1260 780 1100 680 990 585
080 AC M-LO 1260 790 1100 700 990 625
100 AC LO 1260 780 1090 775 990 700
120 AC LO 1195 865 1085 785 985 785
048
080 AC HI 1635 1040 1470 915 1325 820
100 AC M-HI 1680 1040 1465 915 1325 820
120 AC M-HI 1650 1070 1465 975 1315 930
060
100 AC HI 1085 1300 1840 1150 1655 1025
120 AC HI 2110 1300 1865 1140 1640 1080
TABLE 4—AIRFLOW SELECTION FOR 355MAV FURNACES (CFM)
598A
UNIT
SIZE
HIGH-SPEED
A/C SETUP
SWITCH POSITION
FURNACE MODEL/HEATING SIZE
LOW-SPEED
CF SETUP
SWITCH POSITION
060 080 100
A/C-1 A/C-2 A/C-3 High Low High Low High Low CF-1 CF-2 CF-3
036 OFF OFF ON 1200 800 1200 800 1200 800 OFF ON OFF
048 OFF ON ON — — — — 1600 1000 ON ON OFF
060 OFF ON ON — — — — 1600* 1000 ON ON OFF
* Efficiency rating obtained at 1600 CFM. If 2000 CFM is desired, adjust airflow per 355MAV Installation Instructions.
TABLE 5—AIRFLOW SELECTION FOR FK4C FAN COILS (CFM)
598A
UNIT
SIZE
FK4C
EASY SELECT CONTROL BOARD CFM*
SYSTEM TYPE
(Orange Wire)
A/C SIZE
(Blue Wire)
AC/HP CFM ADJUST
(Black Wire)
High Low
036
001 AC 036 NOM 1100 680
002 AC 036 NOM 1100 680
003 AC 036 NOM 1100 680
005 AC 036 NOM 1100 680
006 AC 036 NOM 1100 745
048
005 AC 048 NOM 1470 910
006 AC 048 NOM 1470 995
060 006 AC 060 NOM 1835 1240
* Airflow CFMs are given with AC/HP CFM ADJUST jumper set at NOM. Airflow can be ad15% or -10% by selecting HI or LO respectively.
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