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Refrigerant Leak Detection System
For all tables contained in this section of the manual,
the refrigerant charge is the total system charge which
is marked on the system according to the instructions
provided by the manufacturer of the outdoor unit.
W W A A R R N N I I N N G G
R R i i s s k k o o f f F F i i r r e e ! !
F F l l a a m m m m a a b b l l e e r r e e f f r r i i g g e e r r a a n n t t u u s s e e d d . . T T o o b b e e r r e e p p a a i i r r e e d d o o n n l l y y
b b y y t t r r a a i i n n e e d d s s e e r r v v i i c c e e p p r r o o f f e e s s s s i i o o n n a a l l . . D D o o n n o o t t p p u u n n c c t t u u r r e e
r r e e f f r r i i g g e e r r a a n n t t t t u u b b i i n n g g . .
D D i i s s p p o o s s e e o o f f p p r r o o p p e e r r l l y y i i n n a a c c c c o o r r d d a a n n c c e e w w i i t t h h f f e e d d e e r r a a l l o o r r
l l o o c c a a l l r r e e g g u u l l a a t t i i o o n n s s . . F F l l a a m m m m a a b b l l e e r r e e f f r r i i g g e e r r a a n n t t u u s s e e d d . .
W W A A R R N N I I N N G G
L L E E A A K K D D E E T T E E C C T T I I O O N N S S Y Y S S T T E E M M ! !
L L E E A A K K D D E E T T E E C C T T I I O O N N S S Y Y S S T T E E M M i i n n s s t t a a l l l l e e d d . . U U n n i i t t m m u u s s t t b b e e
p p o o w w e e r r e e d d e e x x c c e e p p t t f f o o r r s s e e r r v v i i c c e e . .
To ensure safety of the building occupants, the air
handler is equipped with a refrigerant leak detection
system. The system is comprised of a refrigerant
sensor and a mitigation control board. The system
automatically detects leaks in the indoor coil and
initiates actions to mitigate the risk of ignition of the
leaked refrigerant, including:
•
Turning on the blower of the indoor unit to dilute
leaked refrigerant;
•
Fully opening any zoning dampers, when
applicable;
Table 3.
Minimum Space Conditioned by the Appliance
sea level-
2,000
Charge (lb)
4
63
5
79
6
95
7
110
8
126
9
142
10
158
11
173
12
189
13
205
14
221
15
236
16
252
17
268
18
284
19
299
20
315
10
2,001-
4,001-
6,001-
4,000
6,000
8,000
Minimum Conditioned Space (ft
66
70
83
88
100
105
116
123
133
140
149
158
166
175
183
193
199
211
216
228
232
246
249
263
266
281
282
298
299
316
315
333
332
351
•
Turning off the compressor of the outdoor unit;
•
De-energizing potential sources of ignition
connected to the system;
•
Energizing an audible alarm, if so equipped.
Examples of potential ignition sources that are de-
energized include electrostatic air cleaners.
R R i i s s k k o o f f F F i i r r e e ! !
I I f f i i n n s s t t a a l l l l i i n n g g t t h h e e u u n n i i t t i i n n a a n n y y o o t t h h e e r r o o r r i i e e n n t t a a t t i i o o n n o o t t h h e e r r
t t h h a a n n u u p p f f l l o o w w , , t t h h e e r r e e f f r r i i g g e e r r a a n n t t s s e e n n s s o o r r m m u u s s t t b b e e
r r e e l l o o c c a a t t e e d d . . S S e e e e
Refrigerant sensors for refrigerant leak detection
systems shall only be replaced as specified by the
manufacturer.
Minimum Conditioned Space
The installer must verify that the total space
conditioned by the system is large enough to safely
dilute any leaked refrigerant in the event of a
refrigerant leak of the indoor coil.
The minimum space conditioned by the appliance shall
be according to
includes any parts of the space connected via an air
duct system. The altitude of installation is the altitude
above sea level of the site where the equipment is
installed.
Altitude (ft)
8,001-
10,001-
10,000
12,000
74
79
85
93
99
106
112
119
127
130
138
148
149
158
169
167
178
190
186
198
211
205
218
232
223
237
254
242
257
275
260
277
296
279
297
317
298
317
338
316
336
359
335
356
380
353
376
402
372
396
423
W W A A R R N N I I N N G G
U U n n i i t t C C o o n n v v e e r r s s i i o o n n I I n n s s t t r r u u c c t t i i o o n n s s , , p p . . 2 2 8 8
Table 3, p.
10. The conditioned space
12,001-
14,001-
14,000
15,000
2
)
91
94
113
118
136
141
159
165
181
188
204
212
227
235
249
259
272
282
295
306
318
330
340
353
363
377
386
400
408
424
431
447
454
471
18-GF79D1-1A-EN
. .
above
15,000
98
122
147
171
196
220
245
269
294
318
343
367
392
416
440
465
489
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