4
Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)
Information is Specific to 286A and 288A Models
UNIT SIZE
LIQUID
RATED VAPOR*
Connection
Diameter
Tube
Diameter
Connection
Diameter
Tube
Diameter
286A024
3/8
3/8
5/8
5/8
286A036
3/8
3/8
3/4
3/4
286A048
3/8
3/8
7/8
7/8
286A060
3/8
3/8
7/8
1--1/8
288A024
3/8
3/8
3/4
3/4
288A036
3/8
3/8
3/4
3/4
288A048
3/8
3/8
7/8
7/8
288A060
3/8
3/8
7/8
1--1/8
* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length linesets.
Notes
:
1. Do not apply capillary tube or the fixed orifice indoor coils to these units.
2 For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (250 ft./76.2 m Total Equivalent Length),
refer to the Residential Piping and Long Line Guideline for Air Conditioners and Heat Pumps using Puron
®
Refrigerant.
Table 2 – Accessory Usage
ACCESSORY
REQUIRED FOR LOW---AMBIENT
COOLING APPLICATIONS
(Below 55
°
F/12.8
_
C)
REQUIRED FOR LONG LINE
APPLICATIONS*
REQUIRED FOR SEA COAST
APPLICATIONS
(Within 2 miles/3.22 km)
Crankcase Heater
Standard
Standard
Standard
Evaporator Freeze Protection
Standard with Evolution
t
Control
(Low Ambient not allowed with
non---communicating thermostat)
No
No
Winter Start Control
Standard with Evolution Control
(Low Ambient not allowed with non---
communicating thermostat)
No
No
Compressor Start Assist Capacitor
and Relay
}
Standard on 286A models.
Not required for 288A
Standard on 286A models
.
Not required for 288A
Standard on 286A models
Not required for 288A
Low---Ambient Control
Standard with Evolution Control
(Low ambient not allowed with non---
communicating thermostat)
No
No
Support Feet
Recommended
No
Recommended
Liquid---Line Solenoid Valve
No
Yes
No
Puron Refrigerant Balance Port
Hard---Shut Off TXV
Yes
{
Yes
{
Yes
{
* 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), refer to the
Residential Piping and Long Line Guideline for Air Conditioners and Heat Pumps using Puron
®
Refrigerant.
{
Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
}
Information is specific to 286A and 288A models.
the environmentally sound refrigerant
REGISTERED
ISO 9001:2000
This product has been designed and manufactured to
meet Energy Star
®
criteria for energy efficiency when
matched with appropriate coil components. However,
proper refrigerant charge and proper air flow are critical
to achieve rated capacity and efficiency. Installation of
this product should follow all manufacturing refrigerant
charging and air flow instructions.
Failure to confirm
proper charge and air flow may reduce energy
efficiency and shorten equipment life.
Ready for use in a Hybrid Heat
r
Duel Fuel system.
286A
/288A
