3
Elevate Unit
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not allow water and/or ice to build up in base pan.
Elevate unit per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate
drainage of unit.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Locate the unit in such a way that it is stable in all
circumstances including adverse weather conditions.
In Long--Line Applications, Install Liquid--Line
Solenoid Valve (LSV)
For refrigerant piping arrangements with equivalent lengths greater
than 80 ft. (24.38 m) and/or when elevation difference between
indoor and outdoor unit is greater than
±20
ft. (
±
6.10 m), follow
all requirements of the Residential Piping and Long--Line
Guideline. If required by the Residential Piping and Long--Line
Guideline, install LSV kit, part no. KHALS0401LLS, specifically
designed for Puron
R
refrigerant heat pumps. LSV should be
installed within 2 ft. (0.61 m) of outdoor unit with flow arrow
pointing toward outdoor unit. Follow the Installation Instructions
included with accessory kit.
IMPORTANT
: Flow arrow must point toward outdoor unit.
Make Piping Connections
!
WARNING
PERSONAL INJURY AND UNIT DAMAGE
HAZARD
Failure to follow this warning could result in personal injury or
death.
Relieve pressure and recover all refrigerant before system
repair or final unit disposal. Use all service ports and open all
flow--control devices, including solenoid valves.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Do not leave system open to atmosphere any longer than
minimum required for installation. POE oil in compressor is
extremely susceptible to moisture absorption. Always keep
ends of tubing sealed during installation.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
If ANY refrigerant tubing is buried, provide a 6 in. vertical
rise at service valve. Refrigerant tubing lengths up to 36 in.
(914.4 mm) may be buried without further special
consideration. Do not bury lines longer than 36 in. (914.4
mm).
Outdoor units may be connected to indoor section using accessory
tubing package or field--supplied refrigerant grade tubing of correct
size and condition. For tubing requirements beyond 80 ft. (24.38
m), substantial capacity and performance losses can occur.
Following the recommendations in the Residential Piping and
Long--Line Guideline will reduce these losses. Refer to Table 1 for
field tubing diameters. Refer to Table 2 for accessory requirements.
Outdoor Unit Connected to Factory--Approved Indoor
Unit
Outdoor unit contains correct system refrigerant charge for
operation with factory--approved, AHRI--rated indoor unit with
highest sales volume when connected by 15 ft. (4.57 m) of
field--supplied or factory--accessory tubing, and factory--supplied
filter drier. Check refrigerant charge for maximum efficiency.
NOTE
: If the indoor furnace coil width is more than the furnace
casing width, refer to the indoor coil Installation Instructions for
transition requirements.
Table 1 – Refrigerant Connections and Recommended Liquid
and Vapor Tube Diameters (in.)
UNIT SIZE
LIQUID
RATED VAPOR*
Connection
& Max. Tube
Diameter
Connection
Diameter
Tube
Diameter
624, 924
3/8
3/4
3/4
636, 936
3/8
7/8
7/8
648, 948
3/8
7/8
1-1/8
660, 960
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 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. (6.1 m) vertical differential 250 ft. (76.2 m) Total
Equivalent Length), refer to the Residential Piping and Longline Guide
line--- Air Conditioners and Heat Pumps using Puron refrigerant.
25H
N
B
6
/25H
N
B
9
