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882108-YIM-B-1012
Johnson Controls Unitary Products 9
TABLE 3: STANDARD GAS HEATING CAPACITIES
GAS HEAT
OPTION
AVAILABLE ON
MODELS
INPUT CAPACITY (MBH)
1
1.
Heating capacity is only staged on CV models. VAV models use only one stage at full capacity.
O
UTPUT
CAPACITY
(MBH)
2
2.
Blower motor heat not included.
G
AS RATE, CU. FT./HR.
3
3.
Based on a heat content of 1075 Btu/Ft.
3
1ST STAGE TOTAL 1ST STAGE TOTAL
N3 Z42/Z33/Z34 267 267 213 247 247
N5 Z42/Z33/Z34 267 533 426 247 495
N8 Z34 ONLY 267
4
4.
Unit Control Board with 3 heating outputs only. For all other Unit Control Boards the 1st Stage is 533 MBH.
800 638 247 742
TABLE 4: TEMPERATURE RISE
TON
MODULES
123
25 5-35 25-55 -
30 5-35 20-50 -
40 5-30 10-45 25-55
TABLE 5: MINIMUM HEATING CFM
TON
MODULES
1
1
1.
Calculated minimum CFM for maximum heat
rise is 5,644 for 25/30T and 6,584 for 40T, 1
module.
23
25 6,000 7,183 -
30 6,000 7,901 -
40 8,000 8,779 13,169
TABLE 6: MODULATING GAS HEATING CAPACITIES
GAS HEAT OPTION
AVAILABLE ON
MODELS
INPUT CAPACITY (MBH)
STEPS
O
UTPUT CAPACITY
(MBH)
1
1.
Output Capacity at Full Fire.
G
AS RATE, CU. FT./HR.
M
INIMUM MAXIMUM MINIMUM MAXIMUM
D3
2
2.
Modulating Gas Heat available on CV models only.
Z42/Z33/Z34 69 267 6 213 64 247
D5
2
Z42/Z33/Z34 69 533 12 426 64 495
D8
2
Z34 ONLY 69 800 17 638 64 744