20
For 48/50PG03--07 units, one outdoor fan is controlled in all
modes by the Motormaster
R
sensing on circuit A.
For 48/50PG08--14 units, 2 outdoor fans are controlled in all
modes by the Motormaster sensing on circuit A.
For 48/50PG16 units, 3 outdoor fans are controlled in normal
cooling and sub--cooling Reheat1 modes by the Motormaster
sensing circuit A. Two of the fans are additionally controlled with
OFC.1 output, based on outdoor temperature, during the hot--gas
Reheat2 mode (level 1 = 1 fan, level 2 = 3 fans).
For 48/50PG20--28 and 48/50PM16--28 units, contactor OFC1
controls power to the Motormaster which controls OFM1 and
OFM4. Contactor OFC2 controls the remaining two fans (16 and
20 size) or remaining 4 fans (24 and 28 sizes).
Table 5 – Outdoor Fan Level Transitions
FAN LEVEL
OUTDOOR TEMPERATURE (F)
Without Humidi---MiZer™ System
With Humidi---MiZer System
Level 2 On
55 (sizes 03---20), 45 (sizes 24---28)
61 (PG03---16, sizes 24---28), 68 (size 20, PM16)
Level 2 Off
45 (PG03---16), 50 (size 20, PM16), 40 (sizes 24---28)
57
Level 3 On
65
68 (PG03---16, size 24---28), 88 (size 20, PM16)
Level 3 Off
55
62 (PG03---16, size 24---28), 78 (size 20, PM16)
NOTE: Where not specified, the models are both PG and PM. Levels 0 and 1 are only in play if the OAT is lower than the Level 2 On temperature and the
pressure is not above its respected max.
Table 6 – 48/50PG03--16 Fan Level Control of Fans and Contactors
FAN LEVEL
48/50PG03---07
48/50PG08---14
48/50PG16
Standard Unit
Humidi---MiZer Unit
Standard Unit
Humidi---MiZer Unit
Standard Unit
Humidi---Mizer Unit
0
OFF
OFF
OFF
OFF
OFF
OFF
1
OFC1 On
Low Speed
Motormaster
Fan 1
OFC1 On,
OFC2 Off
Fan 1 On
Motormaster
Fan 1 and Fan 2
OFC1 On,
OFC2 Off
Fan 1 On
Motormaster, OFC1
Off
Fan 2
2
OFC1 Off
High Speed
N/A
OFC1 On,
OFC2 On
Fan 1 and 2 On
N/A
OFC1 On,
OFC2 On
Fan 1, 2, 3 On
Motormaster, OFC1
On
Fan 1, 2, 3
3
N/A
N/A
N/A
N/A
N/A
N/A
Table 7 – 48/50PG20--28 and PM16--28 Fan Level Control of Outdoor Fan contactors (OFC(X))
With Humidi---MiZer System
With Humidi---MiZer System
Circuit A
Circuit B
Circuit A and B
---
---
---
1
1, 3 (PG28)
3
1
1,2 (20, PM16)
2 (24---28)
2, 3 (20, PM16)
2 (24---28)
1, 2 (20, PM16)
2 (24---28)
1,2
1, 2, 3 (PG28)
2, 3
1, 2
48/
50P
G
and
P
M
Содержание 48/50PG Series
Страница 32: ...32 C07009 Fig 20 Air Baffle Dimensions 48 50PG03 16 48 50PG and PM...
Страница 33: ...33 C08077 Fig 21 Air Baffle Dimensions 48 50PG20 28 and 48 50PM16 28 48 50PG and PM...
Страница 58: ...58 C08549 Fig 28 48PG03 16 Control Wiring Schematic 48 50PG and PM...
Страница 59: ...59 C08550 Fig 29 50PG03 16 Control Wiring Schematic 48 50PG and PM...
Страница 60: ...60 C08551 Fig 30 Typical 48 50PG03 16 Power Wiring Schematic and Legend 48 50PG16 460 3 60 Shown 48 50PG and PM...
Страница 64: ...64 C08471 Fig 34 Typical 48PG and PM16 28 Control Schematic 48PM16 28 Shown 48 50PG and PM...
Страница 66: ...66 C08557 Fig 36 Typical 50PG and PM16 28 Control Schematic 50PG20 28 Shown 48 50PG and PM...
Страница 67: ...67 C08064 Fig 37 Typical 50PG and PM16 28 with Humidi MiZert Control Schematic 50PM16 28 Shown 48 50PG and PM...
Страница 68: ...68 C08558 Fig 38 Typical 48 50PG and PM16 28 Power Schematic 48 50PM16 28 Shown 48 50PG and PM...
Страница 72: ...72 C08565 Fig 42 Typical 48 50PG20 28 Component Arrangement 48 50PG20 24 Shown 48 50PG and PM...
Страница 73: ...73 C08067 Fig 43 48 50PM16 28 Component Arrangement 48 50PG and PM...
Страница 74: ...74 C08562 Fig 44 48 50PM16 28 with Humidi MiZert Component Arrangement 48 50PG and PM...
Страница 208: ...208 48 50PG and PM...
