Additional Static Resistance - Johnson Controls J ZR Series Installation Manual

Table 23: Additional Static Resistance
Size
Model CFM Cooling Only
(Tons)
900
1000
1100
JA3 (3) ZR 1200
1300
1400
1500
1200
1300
1400
1500
1600
1700
1800
JA4 (4)
ZR
JA5 (5)
1900
2000
2100
2200
2300
2400
2500
1. Add these values to the available static resistance in the respective Blower Performance Tables.
2. Deduct these values from the available external static pressure shown in the respective Blower Performance Tables.
3. The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct
is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
Johnson Controls Ducted Systems
1 2 3
Economizer 4" Pleated Filter
0.05 -0.05
0.05 -0.03
0.04 -0.02
0.04 0.00
0.03 0.01
0.03 0.03
0.03 0.04
-0.01 0.10
-0.01 0.11
-0.01 0.12
-0.01 0.13
-0.01 0.14
-0.01 0.15
-0.02 0.16
-0.02 0.17
-0.02 0.18
-0.03 0.19
-0.03 0.20
-0.04 0.21
-0.04 0.22
-0.05 0.23
2
3 6
0.01 0.00 0.00
0.02 0.00 0.00
0.03 0.01 0.01
0.04 0.01 0.01
0.05 0.01 0.01
0.07 0.02 0.02
0.08 0.02 0.02
0.05 0.01 0.01
0.06 0.01 0.01
0.06 0.02 0.02
0.07 0.02 0.02
0.08 0.02 0.02
0.08 0.03 0.03
0.09 0.03 0.03
0.10 0.04 0.04
0.10 0.04 0.04
0.11 0.05 0.05
0.12 0.06 0.06
0.12 0.06 0.06
0.13 0.07 0.07
0.14 0.08 0.08
5566229-JIM-B-1019
2
Electric Heat kW
9 15 20
0.00 0.01 0.01
0.00 0.02 0.02
0.01 0.02 0.02
0.01 0.02 0.02
0.01 0.03 0.03
0.02 0.03 0.03
0.02 0.04 0.04
0.01 0.02 0.02
0.01 0.03 0.03
0.02 0.03 0.03
0.02 0.04 0.04
0.02 0.04 0.04
0.03 0.05 0.05
0.03 0.05 0.05
0.04 0.06 0.06
0.04 0.07 0.07
0.05 0.07 0.07
0.06 0.08 0.08
0.06 0.09 0.09
0.07 0.10 0.10
0.08 0.11 0.11
24
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.09
0.10
0.11
45