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Indoor Thermostat Control Options
Model
25VNA
* Requires model SYSTXCCUID01 ---V or SYSTXCCUIZ01 ---V or newer.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
WARNING
!
ELECTRICAL HAZARD - - HIGH VOLTAGE!
Failure to follow this warning could result in personal injury
or death.
Electrical components may hold charge. DO NOT remove
control box cover for 2 minutes after power has been
removed from unit.
PRIOR TO TOUCHING ELECTRICAL COMPONENTS:
Verify zero (0)voltage at inverter connections shown on
inverter cover.
Inverter Cover
IMPORTANT: The inverter cover should NEVER be removed
because there is no reason to remove the inverter cover to access
the inverter. The inverter is not serviceable. A replacement cover
is provided with a replacement inverter.
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.
INSTALLATION RECOMMENDATIONS
In some cases noise in the living area has been traced to gas
pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
2. In noise sensitive applications (such as bedrooms), when a
lineset is mounted to ceiling joists or floor joists, the out-
door unit must be located at least 10 ft (3.05 m) away. If
this is not possible, create a line set configuration with
enough bends to provide 10 ft (3.05 m) of total line set
length outside the dwelling
3. Ensure that vapor and liquid tube diameters are appropriate
for unit capacity.
4. Run refrigerant tubes as directly as possible by avoiding un-
necessary turns and bends.
Infinity
Control
Yes*
The outdoor unit contains the correct amount of refrigerant charge
for operation with AHRI rated and factory- -approved smallest
indoor unit when connected by 15 ft (4.57 m) of field- -supplied or
factory accessory tubing.
Adjust refrigerant charge by adding or removing the charge
to/from the unit depending on lineset length and indoor unit as
calculated and displayed on the UI. The user interface (UI)
calculates required charge adjustment and total system charge
required. For proper unit operation, check refrigerant charge using
charging information in the Check Charge section of this
instruction.
IMPORTANT: Liquid- -line size is 3/8- -in. OD for all 25VNA
applications including long line applications.
IMPORTANT: Always install the factory- -supplied liquid- -line
filter drier. Obtain replacement filter driers from your distributor or
branch.
IMPORTANT: Always install the factory- -supplied muffler (part
#LM10KK003) on the vapor line as described in the
Supplied Muffler Installation
Obtain replacement mufflers from you distributor or branch.
2
5. Leave some slack between structure and unit to absorb vi-
bration.
6. When passing refrigerant tubes through the wall, seal open-
ing with RTV or other pliable silicon- -based caulk (see Fig.
1).
7. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
8. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with tub-
ing (see Fig. 1).
9. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
10. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 1.)
11. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
If proper lineset routing techniques are not followed, variable
speed systems can be susceptible to lineset transmitted noise
inside the dwelling and, in extreme cases, tubing breakage.
OUTDOOR WALL
INDOOR WALL
CAULK
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND SUCTION
TUBE ONLY)
1" (25.4 mm)
MIN
SUSPENSION
Fig. 1 - - Connecting Tubing Installation
LIQUID TUBE
SUCTION TUBE
JOIST
INSULATION
SUCTION TUBE
LIQUID TUBE
A07588
Factory
section of these instructions.
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