Modulating Gas Heat - York MILLENIUM SIMPLICITY ELITE Series Technical Application And Programming Manual

Single package rooftop units 25, 30 & 40 ton equipped with controls
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351579-YTS-B-0608
Table 8: Modulating Gas Heat
Stages of Gas Control (% of Full Heat Output)
Gas Heat
Step
Module
1
2
3
1
4
5
6
Gas Heat
Step
Module
1
2
3
4
5
6
2
7
8
9
10
11
12
Gas Heat
Step
Module
1
2
3
4
5
6
7
8
3
9
10
11
12
13
14
15
16
17
24
Input
Output
69,333
55,466
106,666
85,333
165,332
132,266
202,665
162,132
229,332
183,466
266,666
213,333
Input
Output
69,333
55,466
106,666
85,333
165,332
132,266
202,665
162,132
229,332
183,466
266,666
213,333
325,331
260,265
362,664
290,132
389,331
311,465
426,664
341,331
495,997
396,798
533,330
426,664
Input
Output
69,333
55,466
106,666
85,333
165,332
132,266
202,665
162,132
229,332
183,466
266,666
213,333
325,331
260,265
362,664
290,132
389,331
311,465
426,664
341,331
495,997
396,798
533,330
426,664
586,663
469,330
655,996
524,797
693,329
554,663
762,662
610,130
799,995
639,996
% of Total
LF1
HF1
Output
26%
Off
Off
40%
Off
Off
62%
On
Off
76%
On
Off
86%
On
On
100%
On
On
% of Total
LF1
HF1
Output
13%
Off
Off
20%
Off
Off
31%
On
Off
38%
On
Off
43%
On
On
50%
On
On
61%
On
Off
68%
On
Off
73%
On
On
80%
On
On
93%
On
On
100%
On
On
% of Total
LF1
HF1
Output
9%
Off
Off
13%
Off
Off
21%
On
Off
25%
On
Off
29%
On
On
33%
On
On
41%
On
Off
45%
On
Off
49%
On
On
53%
On
On
62%
On
On
67%
On
On
73%
On
On
82%
On
On
87%
On
On
95%
On
On
100%
On
On
Gas Valve Signal for High and Low Fire
LF2
HF2
On
Off
On
On
On
Off
On
On
On
Off
On
On
LF2
HF2
LF3
On
Off
Off
On
On
Off
On
Off
Off
On
On
Off
On
Off
Off
On
On
Off
On
Off
On
Off
Off
On
On
Off
On
On
On
On
On
Off
On
On
On
On
LF2
HF2
LF3
On
Off
Off
On
On
Off
On
Off
Off
On
On
Off
On
Off
Off
On
On
Off
On
Off
On
Off
Off
On
On
Off
On
On
On
On
On
Off
On
On
On
On
On
On
On
On
Off
On
On
On
On
On
Off
On
On
On
On
Johnson Controls Unitary Products
HF3
Off
Off
Off
Off
Off
Off
Off
On
Off
Off
On
On
HF3
LF4
HF4
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
Off
On
Off
Off
Off
On
Off
On
On
Off
On
On
Off
On
On
On
On
On
On

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