Reznor ACUB Option - Installation - ACU - Cased Cooling Coil - Manual (Page 3)

Form I-CAUA-CC, P/N 166152R4, Page 3
The coil fits over the discharge opening on the top of a Reznor ® Model CAUA
heater. The heater should be in its final installed location before adding the
cased cooling coil. The heater must be level.
4.1 Place Coil on
top of the Model
CAUA Heater
4. Cooling Coil
Installation
Instructions
TABLE 3 -
Approximate
Weights of the
Cooling Coils
Read these instructions and become familiar with the installation requirements.
If you do not have knowledge of local requirements, check with the local gas
company or any other local agencies who might have requirements concerning
this installation.
Before beginning, make preparations for necessary supplies, tools, and man-
power. Installation should be done by an HVAC technician qualified in refriger-
ant system installation.
Verify that the package of parts required to install the heat section condensate
drain is either already installed or at the job site.
If specified, place field-supplied gasket material on the top of the heater where
the cabinet surfaces will have contact. The coil will "fit" with the line connection
holes in front or rear of the cabinet. Locate the openings and determine the
most efficient orientation. Lift the coil and place it on top of the heater.
Because of the cabinet design, there is no mechanical attachment required
between the heater and the cased cooling coil.
Verify that the heater and coil cabinet are level.
For CAUA 150 or 200 lbs kg
ACUA 060 / Opt C060 83 38
ACUA 072 / Opt C072 86 39
ACUA 090 / Opt C090 105 48
For CAUA 250 or 300 lbs kg
ACUB 090 / Opt C090 110 50
ACUB 120 / Opt C120 122 55
ACUB 150 / Opt C150 140 64
For CAUA 350 or 400 lbs kg
ACUC 120 / Opt C120 176 80
ACUC 150 / Opt C150 180 82
ACUC 180 / Opt C180 188 85
4.2 Thermostatic
Expansion
Valves
Optional
Cased
Cooling
Coil
Model
CAUA
FIGURE 2 -
Model CAUA
Heater with
Cooling Coil
Locate the shipped-loose TEV Kit components and verify them by Size with the
list in TABLE 4 and with the unit rating plate.
Identify the components that are required for each circuit and prepare to assem-
ble. Refer to the valve manufacturer's instructions for installation information.
When brazing the valve, wet wrap the valve body, but do not allow moisture to
enter the tubing. Braze with the flame pointed away from the valve.
Position the
outlet of the Circuit A thermostatic expansion valve toward the
distributor connection on the bottom liquid line. If a reducer is required, position
it between the distributor and the outlet of the valve.
□
If there is a reducer, attach the reducer to the distributor connection and the
outlet of the valve to the reducer.
□
If there is no reducer, attach the outlet of the valve to the distributor
connection.
Repeat the same procedure to install the thermostatic expansion valve in
Circuit B (the top liquid line).