Johnson Controls ZL Series Installation Manual page 56

Table 36: Additional static resistance
1
Cooling
Model Size (ton) cfm
only 1
2,200 0.04
2,600 0.06
3,000 0.10
3,400 0.13
08 (7.5),
3,800 0.16
09 (8.5),
ZL
4,000 0.17
12 (10.0),
4,400 0.20
14 (12.5)
4,800 0.22
5200 0.24
5,600 0.26
6,000 0.28
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 than0.25 IWG, the unit will deliver less CFM during full economizer operation.
Figure 25: Unit control board
56 Installation Manual ZL Series 7.5- 12.5 Ton 60 Hertz R-410A
2 , 3
Reheat
Economizer 2 3 4 in. filters
,
coil 2 3
,
0.04 0.18 —
0.05 0.24 —
0.07 0.35 —
0.08 0.47 —
0.10 0.59 —
0.11 0.66 —
0.12 0.79 —
0.14 0.91 —
0.15 1.04 —
0.15 1.17 —
0.16 1.30 —
Johnson Controls Ducted Systems
2
6/6.5 9.2/10.5/11 13.8/14/16 16/16.5/17
— — —
— — —
— — —
— —
— — —
— — —
— — —
— — —
— — —
— — —
-- — —
Electric heat kW 2
23 24.8/25.5/27.8 32/33/34 41.7/42.4
0.07 — 0.09
0.09 — 0.11
0.12 — 0.14
0.15 — 0.18
0.19 — 0.22
0.21 — 0.24
0.25 — 0.29
0.30 — 0.34
0.35 — 0.39
0.41 — 0.45
0.48 — 0.52
0.10 0.12
0.12 0.15
0.15 0.19
0.19 0.23
0.23 0.27
0.25 0.30
0.30 0.35
0.35 0.41
0.41 0.47
0.47 0.54
0.54 0.60