Reznor ACUB Option - Installation - ACU - Cased Cooling Coil - Manual (Page 8)

Form I-CAUA-CC, Page 8
®
4.5 Ductwork
This system requires both return air and discharge ductwork (unless ordered
with an Option AVA2 inlet base and/or an Option CD discharge plenum). Dis-
charge ductwork attaches to the top of the coil cabinet. Dimensions D x E in
FIGURE 1 (page 2) are the duct flange dimensions.
It is recommended that an optional mixing box with filters, an optional filter
cabinet, or field-supplied filters be installed in the inlet air duct.
Refer to the heater installation manual, Form I-CAUA, Paragraph 6.4, for addi-
tional details on installing ductwork.
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05/14 (Serial No. Date Code BNE) Form I-CAUA-CC (Version C.1)
FIGURE 6 - Typical Low Voltage Wiring (field supplied)
R
C
Y
1
Y
2
W
1
W
2
G
Thermostat
Connections
(Read thermostat
manufacturer’s
installation
instructions
before wiring.)
24V Supply *
Common
1st Stage Cooling
2nd Stage Cooling
1st Stage Heating
Optional 2-Stage Heating
Fan
Heater Terminal Strip
Common
1st stage cooling
24V control relay
2nd stage cooling
24V control relay
for Sizes 060 (R-410A
only), 090, 120, 150,
and 180
Condensing
Unit
Connections
(Read
manufacturer’s
installation
instructions
before wiring.)
* A separate 24V control transformer may be
required for the condensing equipment controls.
Install a jumper wire between RH and RC terminals
on the thermostat for single transformer operation.
Consult the thermostat manufacturer’s instructions.
Legend
(field-supplied 24V wiring)
Thermostat wiring - 24V
Field control wiring - 24V
4.6 Electrical
Connections
The system is operated by 24-volt controls. A separate 24V control transformer
is required for the condensing equipment controls. Refer to the 24V electrical
requirements of the condenser manufacturer.
Follow the installation instructions and startup procedure in heater installation
manual Form I-CAUA to complete installation of the heating/cooling unit.
Follow the instructions and requirements of the Model MASA or field-provided
condensing unit to complete the cooling system.
4. Cooling Coil
Installation
Instructions
(cont'd)