Rapid 2005 Installation, operation & service manual - page 110
B-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
100 of 147
17.
8
.4 Motorized Inlet Damper
The motorized inlet damper co
v
ers the o
u
tside air
inlet of the air handler. When the air handler blo
w
er is
t
u
rned on, the damper motor is energized and opens
the damper. The damper motor has an a
u
xiliary
s
w
itch that pre
v
ents the blo
w
er from starting
u
ntil that
damper has opened s
u
fficiently to allo
w
the req
u
ired
air
v
ol
u
me to pass thro
u
gh the air handler.
17.
8
.5 Motorized Dischar
g
e Damper
The motorized discharge damper is mo
u
nted in the
d
u
ct do
w
nstream from the discharge opening of the
air handler. When the air handler fan is t
u
rned on the
damper motor is energized and opens the damper.
The damper motor has an a
u
xiliary s
w
itch that
pre
v
ents the blo
w
er from starting
u
ntil that damper
has opened s
u
fficiently to allo
w
the req
u
ired air
v
ol
u
me to pass thro
u
gh the air handler.
17.
8
.6 Control Enclosure Heater
The control enclos
u
re heater is an electric heater that
keeps the temperat
u
re in the control enclos
u
re
w
ithin
the range for the control components. This option is
intended for extremely cold climates, b
u
t
recommended for installations belo
w
15° F (-9° C).
The air handler controls are rated to perform at
temperat
u
res as lo
w
as -30° F (-34° C). In
en
v
ironments
w
here the air handler may be exposed
to lo
w
er temperat
u
res, a control enclos
u
re heater
may be req
u
ired.
3B
DM1
3C
2
Upper Damper (For All Models)
Lower Damper (For VAV and AM B-2000 and B-3000)
3A
RD2
2
1
62
RD2
-FR uses upper only
-MUA uses upper with a mechanically connected lower
Part Number
Description
Models
77019.301
Inlet Damper
2005
80900
Inlet Damper
2010 and 2010B
80920
MUA Inlet Damper
2020
80920U
FR/AM/VAV
Inlet Damper
2020
77530
MUA Inlet Damper
2030
77830U
FR/AM/VAV
Inlet Damper
2030
DM2
2
(Mounted On Discharge Side)
3B
3C
Part Number
Description
Models
77014.301
Discharge Damper
2005
77018.301
Discharge Damper
2010 and 2010B
80922.2
Discharge Damper
2020
77837.2
Discharge Damper
2030
H1
H3
H2
H4
BREAKER
1A
L1
X1
X2
TRANSFORMER
250 VA
L3
L2
H2 - 230
H4 - COMMON
H3 - 208
2A
H1 - 460
PRIMARY CONNECTION
TRANSFORMER
120 VAC
3 PHASE ONLY
ELECTRIC HEATER
120 V, 60H Z, 200 W
L1
N
THERMOSTAT SET TO 0° F
BREAKER
3 AMP
Part Number
Description
Models
08110
Control Enclos
u
re
Heater
All Models