186CNV: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
5
Refer to Table 1 for field tubing diameters. Refer to Table 2 for
accessory requirements.
* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length line sets.
Notes:
1.Do not apply capillary tube indoor coils to these units.
2.For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal and / or greater than 20 ft. (6.1 m) vertical differential, an accessory Liquid Line Solenoid must be installed.
Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)
UNIT SIZE
LIQUID VAPOR*
Connection
Diameter
Tube
Diameter
Connection
Diameter
Max (Rated)
Diameter
Minimum Tube
Diameter
186CNV024 3/8 3/8 3/4 3/4 5/8
186CNV036 3/8 3/8 7/8 7/8 5/8
186CNV048 3/8 3/8 7/8 1-1/8 3/4
186CNV060 3/8 3/8 7/8 1-1/8 3/4
Table 2 – Accessory Usage
ACCESSORY
REQUIRED FOR
LOW-AMBIENT COOLING
APPLICATIONS
(Below 55°F/12.8_C)
REQUIRED FOR LONG LINE
APPLICATIONS
*
(Over 80 ft/24.38 m)
*. For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (total equivalent length), an accessory Liquid Line Solenoid must be
installed.
REQUIRED FOR SEA
COAST APPLICATIONS
(Within 2 miles/3.22 km)
Crankcase Heater Standard Standard Standard
Evaporator Freeze Protection Standard with Evolution Control No No
Liquid-Line Solenoid Valve No Yes No
Low-Ambient Control Standard with Evolution Control No No
Puron Refrigerant Balance Port
Hard-ShutOff TXV
Yes
†
†. Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
Yes
†
Yes
†
Support Feet Recommended Recommended Recommended
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