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UNIT WITH COOLING
45Q DOAS BOX
COILS (lb)
SIZE
2-ROW 4-ROW
3
97
5
130
45R SIZE UNIT ONLY (lb)
2
91
4
106
LEGEND FOR TABLES 1-7
DDC
— Direct Digital Controls
DOAS
— Dedicated Outdoor-Air System
CONTROL OPTIONS
The units are offered with a wide variety of factory-mounted
controls that regulate the volume of air delivery from the unit
and respond to cooling and heating load requirements of the con-
ditioned space. All control packages can operate stand-alone and
will fulfill the thermal requirements of a given control space.
These devices are available in both pneumatic and electronic ar-
rangements. The 3V™ and ComfortID™ control types are com-
municating controls which can be integrated into a CCN build-
ing system. A number of DDC (direct digital control) control
packages by others are available for consignment mounting as
indicated.
Control offerings are:
A: Analog Electronic
C: VAV
P: Pneumatic
V: VVT
®
(45M,N,R units only)
N: None or DDC by others
Each control approach offers a variety of operating functions;
a control package number identifies combinations of control
functions. Because of the variety of functions available, circuit
diagrams, operating sequences, and function descriptions are
contained in separate Application Data publications. Refer to the
specific control publication for details.
VAV CCN Controls and OPEN VAV Controls
Pressure independent control packages are available with or
without heat. These controls provide occupied and unoccupied
heating and cooling, demand controlled ventilation (DCV), and
zone humidity control. They can be networked together via ei-
ther BACnet
1
or Carrier Comfort Network (CCN) protocols to
provide integrated system operation of all components, including
the operation of air source equipment. These controls may be
used in a stand-alone terminal, or as part of the Carrier DDC
control system. All control arrangements include a standard inlet
flow sensor, control enclosure, SCR (silicone control rectifier)
fan speed controller, class II 24-volt power transformer, and fan
contactor. Several types of room sensors may be ordered, with
and without set point adjustment, and with integral CO
VVT
®
CCN Controls and OPEN VVT Controls
Pressure dependent control packages are available with or with-
out hot water (on-off control), electric heat (up to 2 stages), or
SSR (solid-state relay) electric heat. They are designed to be an
integral part of the Carrier Comfort Network (CCN) or Carrier i-
Vu
®
Open Digital Control Systems, for parallel flow units only.
All control arrangements include a standard inlet flow sensor,
1. BACnet is a registered trademark of ASHRAE (American Society of
Heating Refrigerating and Air Conditioning Engineers).
Table 6 — 45Q Dedicated Outdoor-Air System Unit Weights
WITH DDC OR
ANALOG CONTROLS
(lb)
6-ROW
106
120
+9
145
160
+9
Table 7 — 45R Unit Weights
WITH
WITH DDC OR
PNEUMATIC
ANALOG CONTROLS
CONTROLS (lb)
(lb)
+4
+4
sensors.
2
WITH ELECTRIC HEAT (lb)
+30
+35
WITH ELECTRIC HEAT
(lb)
+9
+25
+9
+25
control enclosure, SCR fan speed controller, 24-volt transformer
and fan relay.
Analog Electronic Controls
Pressure independent control packages are available with or
without hot water or electric heat, automatic or remote night
shutdown, and automatic night setback. All control arrange-
ments include a standard inlet flow sensor, control enclosure,
SCR fan speed controller, 24-volt transformer, fan relay, and
wall thermostat to match the control type.
Pneumatic Controls
Pressure independent control packages are available with or
without hot water or electric heat, night shutdown and/or unoc-
cupied heating. All control arrangements include a standard lin-
ear inlet flow sensor and SCR fan speed controller.
Single function controller: Provides single function, i.e., DA-
NO.
Multi-function controller: Capable of providing DA-NO, DA-
NC, RA-NC or RA-NO functions.
Direct Digital Controls (By Others)
Control sequences are available for factory installation of
numerous field-supplied controls from various manufacturers.
All packages include a standard liner inlet flow sensor, control
enclosure, SCR fan speed controller, 24-v transformer, and fan
relay.
Contact Carrier for information on mounting field-supplied
controls.
No Control Units
Control sequences are also available to provide a control box on
units supplied with no factory-installed controls. These arrange-
ments include a standard linear inlet flow sensor, control enclo-
sure, SCR fan speed control, 24-v transformer, and fan relay.
Step 1 — Install Fan-Powered Box
SELECT LOCATION
1. Units should be installed so that they do not come in con-
tact with obstacles such as rigid conduit, sprinkler piping,
Greenfield flexible metal covering, or rigid pneumatic tub-
ing; such contact can transmit vibration to the building
structure, causing objectionable low frequency noise.
2. Units should never be installed tight against concrete slabs
or columns, as vibration transmission is amplified in this
condition.
3. Fan powered terminals require sufficient clearance for ser-
vicing the blower/motor assembly from the bottom of the
4
WITH HOT WATER (1 ROW/2 ROW)
(lb)
+10/+12
+12/+14
WITH HOT WATER (1 ROW/2 ROW)
(lb)
+8/+10
+8/+10
INSTALLATION
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