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.
OUTPUT
CAPACITY
(MBH)2
2. Blower motor heat not included.
GAS 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 2674
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
11
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 OUTPUT CAPACITY
(MBH)1
1. Output Capacity at Full Fire.
GAS RATE, CU. FT./HR.
MINIMUM MAXIMUM MINIMUM MAXIMUM
D32
2. Modulating Gas Heat available on CV models only.
Z42/Z33/Z34 69 267 6 213 64 247
D52Z42/Z33/Z34 69 533 12 426 64 495
D82Z34 ONLY 69 800 17 638 64 744