Millennium Enterprises Z33, Z34, Z42 FIGURE 2 - TYPICAL RIGGING, TABLE 7: MODULATING HEAT

882108-YIM-B-1012
10 Johnson Controls Unitary Products
FIGURE 2 - TYPICAL RIGGING
TABLE 7: MODULATING HEAT
STAGES OF GAS CONTROL (% OF FULL HEAT OUTPUT)
GAS HEAT OPTION AVAILABLE ON MODELS STEP INPUT OUTPUT % OF TOTAL OUTPUT
D3
(Turn down ratio
3.8 to 1) Z42, Z33, Z34
1 69,333 55,466 26%
2 106,666 85,333 40%
3 165,332 132,266 62%
4 202,665 162,132 76%
5 229,332 183,466 86%
6 266,666 213,333 100%
D5
(Turn down ratio
7.7 to 1) Z42, Z33, Z34
1 69,333 55,466 13%
2 106,666 85,333 20%
3 165,332 132,266 31%
4 202,665 162,132 38%
5 229,332 183,466 43%
6 266,666 213,333 50%
7 325,331 260,265 61%
8 362,664 290,132 68%
9 389,331 311,465 73%
10 426,664 341,331 80%
11 495,997 396,798 93%
12 533,330 426,664 100%
D8
(Turn down ratio
11.5 to 1) Z34 Only
1 69,333 55,466 9%
2 106,666 85,333 13%
3 165,332 132,266 21%
4 202,665 162,132 25%
5 229,332 183,466 29%
6 266,666 213,333 33%
7 325,331 260,265 41%
8 362,664 290,132 45%
9 389,331 311,465 49%
10 426,664 341,331 53%
11 495,997 396,798 62%
12 533,330 426,664 67%
13 586,663 469,330 73%
14 655,996 524,797 82%
15 693,329 554,663 87%
16 762,662 610,130 95%
17 799,995 639,996 100%
If a unit is to be installed on a roof curb other than a
York roof curb, gasketing must be applied to all sur-
faces that come in contact with the unit underside.
If a unit is to be installed on an angle iron frame it is
recommended that it be sized to allow the bottom
rail to overhang to facilitate installation of conden-
sate drains (see Fig. 4).
RIGGING:
(1) RIG WITH SIX CABLES AND THREE SPREADER
BARS AT LEAST 98” ACROSS THE WIDTH OF THE UNIT.
(2) CENTER OF GRAVITY INCLUDES ECONOMIZER
AND POWER EXHAUST.
ALL PANELS MUST BE SECURED IN
PLACE WHEN THE UNIT IS LIFTED.
CABLES
SPREADER BARS
(3 PLACES)
27”
32”