113A, 114A, 116B
Legacyt RNC Line Air Conditioners
with Puronr Refrigerant
1--1/2 To 5 Nominal Tons
Installation Instructions
5. When passing refrigerant tubes through the wall, seal open-
SAFETY CONSIDERATIONS
ing with RTV or other pliable silicon--based caulk. (See Fig.
1.)
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with
tubing.(See Fig. 1.)
8. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. (25.4
mm) wide and conform to shape of tubing insulation. (See
Fig. 1.)
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
current editions of the National Electrical Code ( NEC ) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
NOTE: Avoid contact between tubing and structure
OUTDOOR WALL
INDOOR WALL
!
Recognize safety information. This is the safety--alert symbol
CAULK
LIQUID TUBE
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety--alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury
or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which would result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or operation.
VAPOR TUBE
JOIST
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND VAPOR
TUBE ONLY)
INSULATION
VAPOR TUBE
!
WARNING
1” (25.4 mm) MIN.
ELECTRICAL SHOCK HAZARD
LIQUID TUBE
SUSPENSION
Failure to follow this warning could result in personal
injury or death.
A94026
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.
Fig. 1 -- Piping Installation
The outdoor unit contains system refrigerant charge for operation
with AHRI rated indoor unit when connected by 15 ft. (4.57 m) of
field--supplied or factory accessory tubing. For proper unit
operation, check refrigerant charge using charging information
located on control box cover and/or in the Check Charge section of
this instruction.
INSTALLATION INSTRUCTIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
IMPORTANT: Maximum liquid--line size is 3/8--in. OD for all
residential applications including long line.
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate
for unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding un-
necessary turns and bends.
IMPORTANT: Always install the factory--supplied liquid--line
filter drier. If replacing the filter drier, refer to Product Data Digest
for appropriate part number. Obtain replacement filter driers from
your distributor or branch.
4. Leave some slack between structure and unit to absorb vi-
bration.
Refer to Fig. 3 and install filter drier as follows:
1. Braze 5--in. liquid tube to the indoor coil.
2. Wrap filter drier with damp cloth.
Sweat Connection
!
CAUTION
3. Braze filter drier to above 5--in. (127 mm) liquid tube.
Flow arrow must point towards indoor coil.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
4. Connect and braze liquid refrigerant tube to the filter drier.
Service valves must be wrapped in a heat--sinking material
such as a wet cloth while brazing.
Use refrigeration 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.
A05178
Fig. 3 -- Liquid Line Filter Drier
Table 1 – Refrigerant Connections and Recommended Liquid
Evacuate Refrigerant Tubing and Indoor Coil
and Vapor Tube Diameters (In.)
113A
LIQUID
RATED VAPOR*
!
CAUTION
Connection
& Max. Tube
Diameter
UNIT SIZE (SERIES)
Connection
Tube
Diameter
Diameter
UNIT DAMAGE HAZARD
018, 024 (Series C)
018, 024 (Series D)
030
036 (Series D)
036 (Series E)
042, 048
3/8
3/8
3/8
3/8
3/8
3/8
3/8
5/8
3/4
3/4
3/4
7/8
7/8
7/8
5/8
3/4
3/4
3/4
7/8
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 triple evacuation
procedure in service manual). Always break a vacuum with dry
nitrogen.
7/8
1 --- 1/8
060
114A
LIQUID
Connection
& Max. Tube
Diameter
RATED VAPOR*
UNIT SIZE
Connection
Diameter
Tube
Deep Vacuum Method
Diameter
The deep vacuum method requires a vacuum pump capable of
pulling a vacuum of 500 microns and a vacuum gage capable of
accurately measuring this vacuum depth. The deep vacuum method
is the most positive way of assuring a system is free of air and
liquid water. A tight dry system will hold a vacuum of 1000
microns after approximately 7 minutes. See Fig. 4.
018, 024
030, 036
042, 048, 049
060, 061
3/8
3/8
3/8
3/8
5/8
3/4
7/8
7/8
5/8
3/4
7/8
1 --- 1/8
116B
LIQUID
Connection
& Max. Tube
Diameter
RATED VAPOR*
UNIT SIZE
Connection
Diameter
Tube
Diameter
5000
4500
4000
018, 024
030
036
042, 048
060
3/8
3/8
3/8
3/8
3/8
3/4
3/4
7/8
7/8
7/8
3/4
3/4
7/8
7/8
1 --- 1/8
LEAK IN
SYSTEM
3500
3000
2500
2000
*
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.
VACUUM TIGHT
1500
2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m)
horizontal or 35 ft. (10.7 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.
3. For alternate liquid line options on 018 --- 042 size units, see Product
Data or Residential Piping and Application Guideline
TOO WET
1000
TIGHT
DRY SYSTEM
500
A95424
0
1
2
3
4
5
6
7
Install Liquid-Line Filter Drier Indoor
MINUTES
A95424
Fig. 4 -- Deep Vacuum Graph
!
CAUTION
Final Tubing Check
UNIT DAMAGE HAZARD
IMPORTANT: Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment. Ensure tubes are
not rubbing against each other or any sheet metal or wires. Pay
close attention to feeder tubes, making sure wire ties on feeder
tubes are secure and tight.
Failure to follow this caution may result in equipment
damage or improper operation.
1. Installation of filter drier in liquid line is required.
2. Filter drier must be wrapped in a heat--sinking material
such as a wet cloth while brazing.
3
Table 2 – Accessory Usage
REQUIRED FOR
SEA COAST
REQUIRED FOR LOW---AMBIENT
COOLING APPLICATIONS
(Below 55°F/12.8_C)
REQUIRED FOR LONG LINE
APPLICATIONS*
ACCESSORY
APPLICATIONS
(Within 2 miles/3.22 km)
Ball Bearing Fan Motor
Compressor Start Assist Capacitor and Relay
Crankcase Heater
Yes{
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
No
No
No
No
No
No
No
Yes
No
Evaporator Freeze Thermostat
H a r d S h u t --- O f f T X V
Liquid Line Solenoid Valve
®
Motor Master or Low---ambient Pressure Switch
No
Recommended
No
Support Feet
Winter Start Control
Recommended
Yes
* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 35 ft. (10.7 m) vertical differential, refer to Residential Split---System Longline
Application Guideline.
{ Additional requirement for Low---Ambient Controller (full modulation feature) MotorMasterr Control.
Use No. 18 AWG color--coded, insulated (35_C minimum) wire. If
thermostat is located more than 100 ft. (30.48 m) from unit, as
measured along the control voltage wires, use No. 16 AWG
color--coded wire to avoid excessive voltage drop.
All wiring must be NEC Class 1 and must be separated from
incoming power leads.
Make Electrical Connections
Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit rating plate. Contact local power company for correction of
improper voltage. See unit rating plate for recommended circuit
protection device.
Use furnace transformer, fan coil transformer, or accessory
transformer for control power, 24v/40va minimum.
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate. Do not
install unit in system where voltage may fluctuate above or below
permissible limits.
NOTE: Use of available 24v accessories may exceed the
minimum 40va power requirement. Determine total transformer
loading and increase the transformer capacity or split the load with
an accessory transformer as required.
NOTE: Use copper wire only between disconnect switch and unit.
NOTE: Install branch circuit disconnect of adequate size per NEC
to handle unit starting current. Locate disconnect within sight from
and readily accessible from unit, per Section 440--14 of NEC.
Final Wiring Check
IMPORTANT: Check factory wiring and field wire connections
to ensure terminations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.
Route Ground and Power Wires
Remove access panel to gain access to unit wiring. Extend wires
from disconnect through power wiring hole provided and into unit
control box.
Compressor Crankcase Heater
When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hr before starting unit. To furnish power to heater
only, set thermostat to OFF and close electrical disconnect to
outdoor unit.
!
WARNING
ELECTRICAL SHOCK HAZARD
A crankcase heater is required if refrigerant tubing is longer than
80 ft. (24.38 m). Refer to the Application Guideline and Service
Manual Longline Section--Residential Split--System Air
Conditioners and Heat Pumps.
Failure to follow this warning could result in personal injury or
death.
The unit cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault should
occur. The ground may consist of electrical wire or metal
conduit when installed in accordance with existing electrical
codes.
Install Electrical Accessories
Refer to the individual instructions packaged with kits or
accessories when installing.
Start--Up
Connect Ground and Power Wires
Connect ground wire to ground connection in control box for
safety. Connect power wiring to contactor as shown in Fig. 5.
!
CAUTION
UNIT OPERATION AND SAFETY HAZARD
DISCONNECT
PER N.E.C. AND/OR
LOCAL CODES
Failure to follow this caution may result in personal injury,
equipment damage or improper operation.
CONTACTOR
S Do not overcharge system with refrigerant.
S Do not operate unit in a vacuum or at negative pressure.
S Compressor dome temperatures may be hot.
FIELD POWER
WIRING
BLUE
3 PHASE ONLY
FIELD GROUND
WIRING
!
CAUTION
GROUND
LUG
A94025
PERSONAL INJURY HAZARD
Fig. 5 -- Line Connections
Failure to follow this caution may result in personal injury.
Connect Control Wiring
Wear safety glasses, protective clothing, and gloves when
handling refrigerant and observe the following:
S Front seating service valves are equipped with Schrader
Route 24--v control wires through control wiring grommet and
connect leads to control wiring (See Fig. 7). Refer to Installation
Instructions packaged with thermostat.
valves.
4
compressor circuit. R--G energizes indoor unit blower relay,
starting indoor blower motor on high speed.
When thermostat is satisfied, its contacts open, de--energizing
contactor and blower relay. Compressor and motors stop.
If indoor unit is equipped with a time--delay relay circuit, the
indoor blower will run an additional 90 seconds to increase system
efficiency.
Follow these steps to properly start up system:
1. After system is evacuated, fully open liquid and vapor ser-
vice valves.
2. Unit is shipped with valve stem(s) front seated (closed) and
caps installed. Replace stem caps after system is opened to
refrigerant flow. Replace caps finger--tight and tighten with
wrench an additional 1/12 turn.
Check Charge
3. Close electrical disconnects to energize system.
4. Set room thermostat at desired temperature. Be sure set
point is below indoor ambient temperature.
5. Set room thermostat to COOL and fan control to ON or
AUTO mode, as desired. Operate unit for 15 minutes.
Check system refrigerant charge.
Factory charge amount and desired subcooling are shown on unit
rating plate. Charging method is shown on information plate inside
unit. To properly check or adjust charge, conditions must be
favorable for subcooling charging. Favorable conditions exist
when the outdoor temperature is between 70_F and 100_F
(21.11_C and 37.78_C), and the indoor temperature is between
70_F and 80_F (21.11_C and 26.67_C). Follow the procedure
below:
3-Phase Monitor
In 3--phase units a small circuit board is factory installed to monitor
line voltage. A small led will flash if a phase problem exists. See
code descriptions on monitor. If LED is flashing, disconnect
power to unit and interchange 2 field--wiring leads on unit
contactor.
Unit is factory charged for 15ft (4.57 m) of lineset. Adjust charge
by adding or removing 0.6 oz/ft of 3/8 liquid line above or below
15ft (4.57 m) respectively.
For standard refrigerant line lengths (80 ft/24.38 m or less), allow
system to operate in cooling mode at least 15 minutes. If conditions
are favorable, check system charge by subcooling method. If any
adjustment is necessary, adjust charge slowly and allow system to
operate for 15 minutes to stabilize before declaring a properly
charged system.
If the indoor temperature is above 80_F (26.67_C), and the
outdoor temperature is in the favorable range, adjust system charge
by weight based on line length and allow the indoor temperature to
drop to 80_F (26.67_C) before attempting to check system charge
by subcooling method as described above.
If the indoor temperature is below 70_F (21.11_C), or the outdoor
temperature is not in the favorable range, adjust charge for line set
length above or below 15ft (4.57 m) only. Charge level should then
be appropriate for the system to achieve rated capacity. The charge
level could then be checked at another time when the both indoor
and outdoor temperatures are in a more favorable range.
A00010
Fig. 6 -- 3--Phase Monitor Control
(Applies to 3--Phase Units Only)
NOTE: If line length is beyond 80 ft (24.38 m) or greater than 20
ft (6.10 m) vertical separation, See Long Line Guideline for
special charging requirements.
Table 3 – Three--Phase Monitor LED Indicators
LED
OFF
FLASHING
ON
STATUS
No call for compressor operation
Reversed phase
Final Checks
IMPORTANT: Before leaving job, be sure to do the following:
Normal
1. Ensure that all wiring is routed away from tubing and sheet
metal edges to prevent rub--through or wire pinching.
!
2. Ensure that all wiring and tubing is secure in unit before
adding panels and covers. Securely fasten all panels and
covers.
CAUTION
UNIT DAMAGE HAZARD
3. Tighten service valve stem caps to 1/12--turn past finger
tight.
Failure to follow this caution may result in equipment
damage or improper operation.
4. Leave Owner’s Manual with owner. Explain system opera-
tion and periodic maintenance requirements outlined in
manual.
5. Fill out Dealer Installation Checklist and place in customer
file.
Ensure compressor rotation is correct.
S 3--phase scroll compressors are rotation sensitive.
S A flash LED on phase monitor indicates reverse rotation.
(See Table 3)
This will not allow contractor to be energized.
S Disconnect power to unit and interchange 2 field--wiring
leads on unit contactor.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible
equipment failure, periodic maintenance must be performed on this
equipment.
Frequency of maintenance may vary depending upon geographic
areas, such as coastal applications. See Owner’s Manual for
information.
Sequence of Operation
Turn on power to indoor and outdoor units. Transformer is
energized.
On a call for cooling, thermostat makes circuits R--Y and R--G.
Circuit R--Y energizes contactor, starting outdoor fan motor and
5
A/C
THERMOSTAT
Typical
FAN COIL
AIR
A/C
THERMOSTAT
Typical
AIR
CONDITIONER
FURNACE CONDITIONER
24 VAC HOT
R
C
R
24 VAC HOT
R
R
C
24 VAC COM
C
24 VAC COM
C
C
W/W1
C
HEAT STAGE 1
COOL STAGE 1
INDOOR FAN
W
Y
HEAT STAGE 1
COOL STAGE 1
INDOOR FAN
W/W1
Y/Y2
G
W2
Y/Y2
G
G
G
A02326
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
FIELD SPLICE CONNECTION
CONTACTOR
C
A97368
Fig. 7 -- Generic Wiring Diagrams
(See Thermostat Installation Instruction
for specific unit combinations)
PURONR (R--410A) REFRIGERANT QUICK REFERENCE GUIDE
S Puron refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment and replacement
components are designed to operate with Puron refrigerant
S Puron refrigerant cylinders are rose colored.
S Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
S Puron refrigerant systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold hose
when charging into suction line with compressor operating
S Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low--side retard.
S Use hoses with 700 psig service pressure rating.
S Leak detectors should be designed to detect HFC refrigerant.
S Puron refrigerant, as with other HFCs, is only compatible with POE oils.
S Vacuum pumps will not remove moisture from oil.
S Do not use liquid--line filter driers with rated working pressures less than 600 psig.
S Do not leave Puron suction line filter driers in line longer than 72 hours.
S Do not install a suction--line filter drier in liquid line.
S POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
S POE oils may cause damage to certain plastics and roofing materials.
S Wrap all filter driers and service valves with wet cloth when brazing.
S A factory approved liquid--line filter drier is required on every unit.
S Do NOT use an R--22 TXV.
S If indoor unit is equipped with an R--22 TXV or piston metering device, it must be changed to a hard shutoff Puron TXV.
S Never open system to atmosphere while it is under a vacuum.
S When system must be opened for service, recover refrigerant, evacuate then break vacuum with dry nitrogen and replace filter driers.
Evacuate to 500 microns prior to recharging.
S Do not vent Puron refrigerant into the atmosphere.
S Do not use capillary tube coils.
S Observe all warnings, cautions, and bold text.
S All indoor coils must be installed with a hard shutoff Puron TXV metering device.
E2009 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 06/09
Catalog No. II113---116A--- 0 5
Replaces: II113A---14A---04
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
6
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