Rapid 2005 Installation, Operation & Service Manual page 110

B-S I , O
ERIES NSTALLATION PERATION AND
17.8.4 Motorized Inlet Damper
The motorized inlet damper covers the outside air
inlet of the air handler. When the air handler blower is
turned on, the damper motor is energized and opens
the damper. The damper motor has an auxiliary
switch that prevents the blower from starting until that
damper has opened sufficiently to allow the required
air volume to pass through the air handler.
Upper Damper (For All Models)
DM1
3B
Lower Damper (For VAV and AM B-2000 and B-3000)
3A
1
-FR uses upper only
-MUA uses upper with a mechanically connected lower
Part Number Description
77019.301 Inlet Damper
80900 Inlet Damper
80920 MUA Inlet Damper
FR/AM/VAV
80920U
Inlet Damper
77530 MUA Inlet Damper
FR/AM/VAV
77830U
Inlet Damper
17.8.5 Motorized Discharge Damper
The motorized discharge damper is mounted in the
duct downstream from the discharge opening of the
air handler. When the air handler fan is turned on the
damper motor is energized and opens the damper.
The damper motor has an auxiliary switch that
prevents the blower from starting until that damper
has opened sufficiently to allow the required air
volume to pass through the air handler.
100 of 147
S M
ERVICE ANUAL
2
3C
2
RD2
RD2
62
Models
2005
2010 and 2010B
2020
2020
2030
2030
3B
(Mounted On Discharge Side)
Part Number Description
77014.301 Discharge Damper
77018.301 Discharge Damper
80922.2 Discharge Damper
77837.2 Discharge Damper
17.8.6 Control Enclosure Heater
The control enclosure heater is an electric heater that
keeps the temperature in the control enclosure within
the range for the control components. This option is
intended for extremely cold climates, but
recommended for installations below 15° F (-9° C).
The air handler controls are rated to perform at
temperatures as low as -30° F (-34° C). In
environments where the air handler may be exposed
to lower temperatures, a control enclosure heater
may be required.
L3
L2
L1
TRANSFORMER
PRIMARY CONNECTION
H1 - 460
H2 - 230
H3 - 208
1A
H4 - COMMON
BREAKER
3 AMP
L1
ELECTRIC HEATER
120 V, 60H Z, 200 W
THERMOSTAT SET TO 0° F
Part Number Description
Control Enclosure
08110
Heater
2
DM2
3C
Models
2005
2010 and 2010B
2020
2030
3 PHASE ONLY
BREAKER
H4
H1 H2
H3
2A
X1 X2
120 VAC
TRANSFORMER
250 VA
N
Models
All Models