Carrier Infinity 25HNB6 Installation Instructions Manual page 4

ACCESSORY
Compressor Start Assist
Crankcase Heater
Evaporator Freeze Protection
Liquid---Line Solenoid Valve
Low---Ambient Control
Puron Refrigerant Balance Port
Hard---ShutOff TXV
Support Feet
* 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 Long
Line Guideline—Air Conditioners and Heat Pumps using Puron® Refrigerant.
{ Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
Install Liquid- - Line Filter Drier Indoor
WARNING
!
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal injury
or equipment damage.
PuronR refrigerant systems operate at higher pressures than
standard R- -22 systems. Do not use R- -22 service equipment
or components on PuronR refrigerant equipment.
Refer to Fig. 4 and install filter drier as follows:
1. Braze 5- -in. (127 mm) liquid tube to the indoor coil.
2. Wrap filter drier with damp cloth.
3. Braze filter drier to above 5- -in. (127 mm) liquid tube. Flow
arrow must point towards indoor coil.
4. Connect and braze liquid refrigerant tube to the filter drier.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Installation of filter drier in liquid line is required.
Fig. 4 - - Liquid- -Line Filter Drier
Table 2 – Accessory Usage
REQUIRED FOR
LOW---AMBIENT COOLING
APPLICATIONS
(Below 55°F/12.8_C)
No
Standard
Standard with Infinityr Control
No
Standard with Infinity Control
Yes
{
Recommended
A05227
REQUIRED FOR LONG LINE
APPLICATIONS*
Yes
Standard
No
Yes
No
Yes{
No
Refrigerant Tubing connection Outdoor
Connect vapor tube to fitting on outdoor unit vapor service valves
(see Table 1).
Install Adapter Tube
1. Remove plastic retainer holding outdoor piston in liquid
service valve.
2. Check outdoor piston size with matching number listed on
unit rating plate.
3. Locate plastic bag taped to unit containing adapter tube.
4. Remove TeflonR washer from bag and install on open
end of liquid service valve.
5. Remove adapter tube from bag and connect threaded nut to
liquid service valve. Tighten nut finger tight and then with
wrench tighten an additional 1/2 turn (15 ft- -lb).
DO NOT OVERTIGHTEN!
Sweat Connections
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Use a brazing shield
S Wrap service valves with wet cloth or heat sink material.
Use refrigerant grade tubing. Service valves are closed from factory
and ready for brazing. After wrapping service valve with a wet
cloth, braze sweat connections using industry accepted methods
and materials. Consult local code requirements. Refrigerant tubing
and indoor coil are now ready for leak testing. This check should
include all field and factory joints.
Evacuate Refrigerant Tubing and Indoor Coil
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used. See Service Manual for
triple evacuation method. Always break a vacuum with dry
nitrogen.
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of
pulling a vacuum of 500 microns and a vacuum gauge capable of
4
REQUIRED FOR SEA
COAST APPLICATIONS
(Within 2 miles/3.22 km)
No
Standard
No
No
No
Yes
{
Recommended