Single--Packaged Products with Energy-- Saving Features and
R-- 410A refrigerant.
S Up to 13.5 SEER
S Up to 7.7 HSPF
S Up to 11.5 EER at 95_FOD
S Factory--Installed TXV
S ECM Motor--Standard
S Dehumidification Feature
FEATURES/BENEFITS
One--piece Heat Pump unit with optional electric heater, low
installation cost, dependable performance and easy maintenance.
Efficient operation High--efficiency design with SEERs
(Seasonal Energy Efficiency Ratio) of up to 13.5.
Easy Installation
Factory-- assembled package is a compact, fully self--contained,
heat pump unit that is prewired, pre--piped, and pre--charged for
minimum installation expense. These units are available in a
variety of standard capacity ranges with voltage options to meet
residential and light commercial requirements. Units are
lightweight and install easily on a rooftop or at ground level. The
high tech composite base eliminates rust problems associated with
ground level applications.
Innovative Unit Base Design
On the inside a high--tech composite material will not rust and
incorporates a sloped drain pan which improves drainage and helps
inhibit mold, algae and bacterial growth. On the outside metal base
rails provide added stability as well as easier handling and rigging.
Durable, dependable components Compressors are designed
for high efficiency. Each compressor is hermetically sealed against
contamination to help promote longer life and dependable
operation. Each compressor also has vibration isolation to provide
P H 3 G -- -- A
R--410A REFRIGERANT
SINGLE AND THREE PHASE
2 -- 5 NOMINAL TONS (SIZES 24--60)
quieter operation. All compressors have internal high pressure and
overcurrent protection.
ECM Motor is standard on all PH3G-- --A models. Direct--drive,
PSC(Permanent Split Capacitor)condenser--fan motors are
designed to help reduce energy consumption and provide for
cooling operation down to 40_F(4.4_C) outdoor temperature.
MotormasterR II low ambient kit is available as a field installed
accessory.
Thermostat controls designed to work as a system with Payne’s
small packaged product.
Thermostatic Expansion Valve -- A hard shutoff, balance port
TXV maintains a constant superheat at the evaporator exit (cooling
cycle) resulting in higher overall system efficiency.
Refrigerant system is designed to provide dependability. Liquid
filter driers are used to promote clean, unrestricted operation. Each
unit leaves the factory with a full refrigerant charge. Refrigerant
service connections make checking operating pressures easier.
High and Low Pressure Switches provide added reliability for the
compressor.
Indoor and Outdoor coils are computer--designed for optimum
heat transfer and efficiency. The indoor coil is fabricated from
copper tube and aluminum fins and is located inside the unit for
protection against damage. The outdoor coil is internally mounted
on the top tier of the unit.
Low sound ratings ensure a quiet indoor and outdoor
environment.
Easy to service cabinets provide easy 3--panel accessibility to
serviceable components during maintenance and installation. The
base with integrated drain pan provides easy ground level
installation with a mounting pad. A nesting feature ensures a
positive basepan to roof curb seal when the unit is roof mounted. A
convenient 3/4-- in. (19.05 mm) wide perimeter flange makes frame
mounting on a rooftop easy.
Convertible duct configuration
Unit is designed for use in either downflow or horizontal
applications. Each unit can be converted from horizontal to
downflow and includes two horizontal duct covers. Downflow
operation is provided in the field to allow vertical ductwork
connections. The basepan seals on the bottom openings to ensure a
positive seal in the vertical airflow mode.
Cabinets are constructed of heavyduty, phosphated, zinc--coated
prepainted steel capable of withstanding 500 hours in salt spray.
Interior surfaces of the evaporator and electricheater
compartments are insulated with cleanable semi--rigid insulation
board, which keeps the conditioned air from being affected by the
outdoor ambient temperature and provides improved indoor air
quality. (Conforms to American Society of Heating, Refrigeration
and Air Conditioning Engineers No. 62P.) The sloped drain pan
minimizes standing water in the drain. An external drain is
provided.
Short-- Cycling protection for the compressor is incorporated into
our defrost control board ensuring a five minute delay (+/--2
minutes) before restarting compressor after shutdown for any
reason.
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
Minor Series
Low No x Ind icato r
A --- S t a n d a r d
N --- L o w N O x
d B --- Sound Levels (decibels)
db—Dry Bulb
SEER—Seasonal Energy Efficiency Ratio
wb—Wet Bulb
COP---Coefficient of Performance
HSPF ---Heating Season Performance Factor
* Air Conditioning, Heating & Refrigeration Institute.
**At “A” conditions - --80_F (26.7_C) indoor db/67_F (19.4_C) indoor wb &
95_F(35_C) outdoor db.{ Rated in accordance with U.S. Government DOE Department of Energy)
test procedures and/or AHRI Standards 210/240.
Notes:
1. Ratings are net values, reflecting the effects of circulating fan heat.
Ratings are based on:
Cooling Standard: 80°F (26.7_C) db, 67°F (19.4_C ) w b i n d o o r e n t e r i n g ---
air temperature and 95°F(35_C)dboutdoorentering---airtemperature.
2. Before purchasing this appliance, read important energy cost and efficiency information available from your retailer.
3
Page 4
PHYSICAL DATA -- UNIT PH3G----A
UNIT SIZEP H 3 G --- --- A 2 4P H 3 G --- --- A 3 0P H 3 G --- --- A 3 6PH3G --- --- A42P H 3 G --- --- A 4 8P H 3 G --- --- A 6 0
NOMINAL CAPACITY (ton)22.533.545
SHIPPING WEIGHT} (lb)
COMPRESSOR QUANTITY1
Refrigerant (R --- 410A) Quantity (lb)
Diameter Motor HP (RPM)
PH3G -- -- A
Nominal Cooling Airflow (CFM)
HIGH --- PRESSURE SWITCH (psig)
L O S S --- O F --- C H A R G E / L O W --- P R E S S U R E
RETURN--- AIR FILTERS*{
*Required filter sizes shown are based on the larger of the AHRI (Air Conditioning, Heating and Refrigeration Institute) rated cooling airflow or the heating airflow
velocity of 300 ft/minute for throwaway type or 450 ft/minute for high ---capacity type. Air filter pressure drop for non ---standard filters must not exceed 0.08 IN.
W.C .
{ If using accessory filter rack refer to the filter rack installation instructions for correct filter size and quantity.
} For 460 volt units, add 14 lb (6.4 kg) to the weight.
NOTE: Tested in accordance with AHRI Standard 270 (not listed in AHRI).
RATING
(dBA)
TYPICAL OCTAVE BAND SPECTRUM (dBA) (without tone adjustment)
1252505001000200040008000
4
Page 5
OPTIONS AND ACCESSORIES
FACTORY
ITEMDESCRIPTION
Coil OptionsBase unit with tin plated indoor coil hairpinsX
Compressor Start Kit
Corporate Thermostats
Crankcase Heater
Economizer
Electric HeatersElectric Heat SupplementX
Filter Rack
Flat Roof Curbs
Low Ambient Kit
Louver Metal Outdoor Coil Grilles
Manual Outside Air Damper
S q u a r e --- t o --- R o u n d D u c t Tr a n s i t i o n K i t
Curb AdapterAdapter curb for new unit with base rail installed on existing curbX
Gasket KitFor field modified existing roof curb with new base rail unit.X
*Refer to Price Page for application detail.
Compressor Star t Kit assists compressor start ---u p by providin g
additional starting torque on sing phase units only.
Thermostats provide control for the system heating and cooling
functions.
Crankcase Heater provides anti --- floodback protection for low--load cooling application s.
Horizontal Economizer with solid state controls and barometric
relief dampers includes filter racks and provide outdoor air during
cooling and reduce compressor operation.
Vertical Economizer with solid state controls and barometric relief
dampers includes filter racks and provide outdoor air during
cooling and reduce compressor operation.
Filter Rack featu res easy installation, serviceability, and high -- filtering performance for vertical applications. In cludes 1 - --in. (25
mm) filter.
F l a t R o o f C u r b s i n bo t h 11 --- i n ( 2 7 9 m m ) a n d 1 4 --- i n . ( 3 5 6 m m )
sizes are available for roof mounted applications.
Low Ambient Kit (Motormaster II Control) allows the use of mechanical cooling down to outdoor temperatures as low as 0°F
( ---18° C) when properly installed.
Louver Metal Outdoor Coil Grilles provides hail and vandalism
protection.
Manual Outside Air Damper includes hood and filter rack with
adjustable damper blade for up to 25% outdoor air.
Square---to --- Round Duct Transition Kit enable 24 ---48 size units to
be fitted to 14 in. (356 mm) round ductwork.
NOTE: Electric heaters are rated at 240v. Refer to Multiplication Factors table for other voltages.
X = Approved combination
CAPACITY (kW
@ 240 or 480
VOLTS)
243036424860
208/230 --- SINGLE PHASE --- 60 HZ
208/230 --- THREE PHASE --- 60 HZ
4 6 0 --- T H R E E PH A S E --- 6 0 H Z
USED WITH SIZES
Minimum Airflow for Reliable Electric Heater Operation (CFM)
SIZEP H 3 G -- -- A 2 4P H 3 G -- -- A 3 0P H 3 G -- -- A 3 6P H 3 G -- -- A 4 2P H 3 G -- -- A 4 8P H 3 G -- -- A 6 0
AIRFLOW (CFM)80010251250140017101800
5
Page 6
BASE
ECONOMIZER
COIL
FILTER
ECONOMIZER
CAULK BOTTOM CORNER
OF ECONOMIZER
SIDE VIEW
PH3G -- -- A
COIL
ON EACH SIDE
FI LT ER
Vertical Economizer
ECONOMIZER
FLANGE
ON BASE
EV APORATOR
COIL
AIL
DET
FILTER RACK
BEND FLANGE AT 90° -SCREW TO
DIVIDER WITH 1-IN. (25 mm)
TOP FILTER RACK
SCREW
Horizontal Economizer
MANUAL OUTSIDE AIR DAMPER
REPLACEMENT
PANEL
MANUAL OUTSIDE
AIR HOOD
DAMPER
BLADE
BOTTOM FILTER
RACK
A09421
6
Page 7
UNIT DIMENSIONS -- PH3G----A24--36
PH3G -- -- A
A09515
7
Page 8
UNIT DIMENSIONS -- PH3G----A42--60
PH3G -- -- A
A09516
8
Page 9
ROOF CURB ACCESSORY DIMENSIONS
G
HVAC unit
base rails
Anchor screw
Flashing field
supplied
Roofing material
field supplied
Cant strip
field supplied
*Provided with roofcurb
HVAC unit
basepan
ROOF CURB DETAIL
B
C
Sealing
Gasket
Roofcurb
Wood nailer*
Roofcurb*
Insulation
(field supplied)
A09090
G
C
F
A
SMALL/COMMON CURB
SUPPLY
AIR
B
H
D
Dashed lines show cross support
location for large basepan units.
E
A09413
PH3G -- -- A
SMALL
BASE
UNIT
A
F
H
LARGE
RETURN
E
AIR
BASE
UNIT
D
UNIT PLACEMENT ON
COMMON CURB
LARGE CURB
UNIT
SIZE
Small
or
Large
Large
* Part Numbers CPRCURB010A00 and CPRCURB011A00 can be used on both small and large basepan units. The cross supports must be located based on
whether the unit is a small basepan or a large basepan.
NOTES:
1. Roof curb must be set up for unit being installed.
2. Seal strip must be applied, as required, to unit being installed.
3. Roof curb is made of 16--gauge steel.
4. Attach ductwork to curb (flanges of duct rest on curb).
2. Select un i t based on required cooling capacity.
Enter Net Cooling Capacities table at condenser entering
temperature of 95°F(35°C). Unit 036 at 1200 cfm and 67°F
(19°C) ewb (entering wet bulb) will provide a total capacity of
35,000 Btuh and a SHC of 26,200 Btuh. Calculate SHC correction,
PH3G -- -- A
if required, using Note 4 under Cooling Capacities tables.
3. Select heating capacity of unit to provide design
condition requirement.
In the Heating Capacities and Efficiencies table, note that the 36
size unit will deliver 35,000 BTUH at the AHRI high temp rating
point. To achieve 60,000 BTUH, accessory electric heat will be
required. Use the Balance Point Worksheet to plot the load line
with the unit capacity. The difference between the load line and
unit capacity at the design heating temperature is the amount of
electric heat that will be required.
4. Determine fan speed and power requirements at
design conditions.
Before entering the air delivery tables, calculate the total static
pressure required. From the given example, the Wet Coil Pressure
Drop Table, and the Filter Pressure Drop T able:
External Static Pressure0.200 IN. W .C.
Filter0.130 IN. W.C.
Wet Coil Pressure Drop0.18
Total Static Pressure0.51 IN. W.C.
Enter the table for Dry Coil Air Delivery— At 0.50 IN. W.C.
ESP (external static pressure) and MEDIUM speed the motor
delivers 1209 CFM.
IN. W.C.
5. Select unit that corresponds to power source
available.
The Electrical Data Table shows that the unit is designed to operate
at 208/230--1 --60.
*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.
*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.
*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.
*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.
*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.
*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.
1. Ratings are net; they account for the effects of the evaporator---fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
t
3. The following formulas may be used:
lwb =
t
lwb)
h
ewb = Enthalpy of air entering evaporator coil
air leaving evaporator coil (
h
4. The SHC is based on 80_F (26.7 _C) edb temperature of air entering evaporator coil. Below 80_F (26.7_C) edb, subtract (corr factor x cfm) from SHC. Above 80_F (26.7_C) edb, add (corr factor x cfm) to SHC.
Where:
Correction Factor = 1.10 x (1 + BF) x (edb --- 80).
5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
17
Page 18
PERFORMANCE DATA (CONT)
Wet Coil Air Delivery (CFM)-- Downflow -- High Speed with 1--in. (25 mm) Filter and Economizer
Dry Coil Air Delivery* -- Horizontal and Downflow Discharge -- Unit PH3G----A24--60
UNIT
P H 3 G --- --- A 2 4
P H 3 G --- --- A 3 0
P H 3 G --- --- A 3 6
P H 3 G --- --- A 4 2
P H 3 G --- --- A 4 8
P H 3 G --- --- A 6 0
* Air delivery values are without air filter and are for dry coil (See PH3G --- - --A Horizontal Wet Coil Pressure D rop Table).
1
Factory---shipped cooling speed
NOTE: For horizontal applications deduct field ---supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting.
For downflow applications see Wet Coil Air Delivery Table for available static including wet coil, 1 --- in. (25 mm) filter and economizer.
Shaded areas indicate speed/static combinations that are not permitted for dehumidification speed.
Condensate trap — A 2--in. (51 mm) condensate trap must be
field supplied.
Ductwork — Secure downflow discharge ductwork to roof curb.
For horizontal discharge applications, attach ductwork to unit with
flanges.
To convert a unit to downflow discharge — Units are equipped
with factory--installed inserts in the downflow openings. Removal
of the inserts is similar to removing an electrical knock--out. Units
installed in horizontal discharge orientation do not require duct
covers.
BALANCE POINT WORKSHEET
70
60
Maximum cooling airflow — T o minimize the possibility of
condensate blow--off from the evaporator, airflow through the units
should not exceed 450 CFM per ton.
Minimum cooling airflow — Minimum cooling airflow is 350
cfm per ton in cooling mode. Airflow can be lower in certain
modes when humidity removal is an issue.
Minimum ambient cooling operation temperature —All
standard units have a minimum ambient cooling operating
temperature of 40_F(4.4_C). With accessory low ambient
temperature kit, units can operate at temperatures down to 0_F
(--17.8_C).
Maximum operating outdoor air temperature for cooling is
125_F (51.7_C).
60
48
50
40
30
20
42
36
30
24
HEATING CAPACITY, MBTUH
BUILDING HEAT LOSS, UNIT INTEGRATED
10
BASED ON INDOOR ENT. AIR AT
70 ºF AND AT RATED CFM
0
-20-10 0 1020 3040506070
OUTDOOR TEMPERATURE, ºF
PH3G -- -- A
A09269
21
Page 22
ELECTRICAL DATA
VOLTAGE
UNIT
P H 3 G --- --- A 2 4208/230-1-6019725313.558.31.24.1
When power is supplied to unit, the transformer (TRAN) is
energized.
On units with crankcase heater, heater is also energized.
Cooling — With the thermostat in the cooling position, the
thermostat makes circuit “R” to “O”. This energizes the reversing
valve solenoid (RVS) and places the unit in standby condition for
cooling.
As the space temperature rises, the thermostat closes circuit “R” to
“Y”. A circuit is made to contactor (C), starting the compressor
(COMP) and outdoor--fan motor (OFM). Circuit “R” to “G” is
made at the same time and starts the indoor--fan motor (IFM).
When the thermostat is satisfied, contacts open, deenergizing C.
The COMP and OFM stop, and the IFM stops after the preselected
time delay.
On the loss of the thermostat call for cooling, 24 V is removed
from both the “Y1/Y” and “G” terminals (provided the fan switch
is in the “AUTO” position) de-- energizing the compressor
contactor and opening the contacts supplying power to
compressor/OFM. After a 90--second delay, the IFM shuts off. If
the thermostat fan selector switch is in the “ON” position, the IFM
PH3G -- -- A
will run continuously.
Heating — On a call for heat, thermostat makes circuites “R” to
“Y) and “R” to “G”.
A circuit is made to C, starting COMP and OFM. Circuit “R” to
“G” also is completed, energizing IFR and starting IFM after the
selected time delay.
Should room temperature continue to fall, circuit “R” to “W” is
made through second--stage thermostat. If optional electric heat
package is used, a relay is energized, bringing on first bank of
supplemental electric heat. When thermostat is satisfied, contacts
open, deenergizing contactor and relay; motors and heaters
deenergize.
Defrost — Defrost board (DB) is a time and temperature control,
which includes a field--selectable time period (dip switch 1 and 2
on the board) between checks for defrost (30, 60, 90, or 120
minutes). Electronic timer and defrost cycle start only when
contactor is energized and defrost thermostat (DFT) is closed.
The defrost board is also equipped with a third dip switch for
selecting Quiet Shift operation. The Quiet Shift operation turns
compressor off at defrost initiation and termination. Unit is factory
shipped with quiet shift turned off.
Defrost mode is identical to cooling mode, except outdoor fan
motor stops and a bank of optional electric heat turns on to warm
air supplying the conditioned space.
NOTE:
1. Compressor time delay occurs through the defrost control
board.
2. Defrost control board has built in 5 minute compressor
delay; once the compressor has started and then stopped, it
cannot be restarted again until 5 minutes have elapsed.
30
Page 31
GUIDE SPECIFICATIONS
Packaged Heat Pumps
HVAC Guide Specifications
Size Range: 2to5Tons,NominalCooling
Model Number: P H 3 G -- -- A
Part 1⎯General
SYSTEM DESCRIPTION
Outdoor, packaged, air-- to--airheatpump unit utilizing a hermetic
scroll compressor for cooling duty and optional electric heating.
Unit shall discharge supply air vertically orhorizontally as shown
on contract drawings. Outdoor fan/coil section shall have a
draw--thru design with vertical discharge for minimum sound
levels.
QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI Standards 210/240
and 270.
B. Unit shall be designed in accordance with UL Standard 1995.
C. Unit shall be manufactured in a facility registered to ISO 9001
manufacturing quality standard.
D. Unit shall be UL listed and c--UL certified as a total package
for safety requirements.
E. Roof curb shall be designed to conform to NRCA Standards.
F. Insulation and adhesives shall meet NFPA 90A requirements
for flame spread and smoke generation.
G. Cabinet insulation shall meet ASHRAE Standard 62P.
DELIVERY, STORAGE AND HANDLING
Unit shall be stored and handled per manufacturer’s
recommendations.
Part 2 ⎯ Products
EQUIPMENT
A. General:
Factory-- assembled, single--piece, heat pump unit. Contained
within the enclosure shall be all factory wiring, piping, controls,
refrigerant charge (R--410A), and special features required prior
to field start--up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of phosphated,
zinc--coated, pre--painted steel capable of withstanding 500
hours of salt spray.
2. Normal service shall be through a single removable cabinet
panel.
3. The unit shall be constructed on a rust proof unit base that
has an externally trapped, integrated sloped drain.
4. Indoor fan compartment top surface shall be insulated with
a minimum 1/2--in. (12.7 mm) thick, flexible fiberglass
insulation, coated on the air side and retained by adhesive
and mechanical means. The indoor wall sections will be
insulated with a minimum semi-- rigid, foil--faced board
capable of being wiped clean. Aluminum foil--faced
fiberglass insulation shall be used in the entire indoor air
cavity section.
5. Unit shall have a field--supplied condensate trap.
6. Metal Insulated Duct Covers for side discharge will be
standard on all sizes.
7. Unit insulation conforms to ASHRAE 62P.
C. Fans:
1. The indoor fan shall be 5--speed, direct--drive, as shown on
equipment drawings.
2. Fan wheel shall be made from steel and shall be
double--inlet type with forward--curved blades with
corrosion resistant finish. Fan wheel shall b e dynamically
balanced.
3. Outdoor fan shall be direct--drive, propeller--type with
aluminum blades riveted to corrosion resistant steel spiders,
be dynamically balanced, and discharge air vertically.
D. Compressor:
1. Fully hermetic compressors with factory--installed vibration
isolation.
2. Scroll compressors shall be standard on all units.
3. Compressor Protection:
Defrost control shall protect compressor by preventing
“short cycling.”
E. Coils:
Indoor and outdoor coils shall have aluminum plate fins
mechanically bonded to seamless copper tubes with all joints
brazed. (Copper/copper and vinyl--coated construction available
as option.) Tube sheet openings shall be belled to prevent tube
wear.
F. Refrigerant Metering Device:
Refrigerant metering device shall be thermostatic expansion
valve for cooling, and fixed orifice for heating.
G. Filters:
Filter section shall consist of field--installed, throwaway, 1--in.
(25 mm) -- thick fiberglass filters of commercially available
sizes.
H. Controls and Safeties:
1. Unit controls shall be complete with a self--contained, low-voltage control circuit.
2. Units shall incorporate an internal compressor protector that
provides reset capability.
I. Operating Characteristics:
1. Unit shall be capable of starting and running at 125_F
(51.7_C) ambient outdoor temperature.
2. Compressor with standard controls shall be capable of
operation down to 40_F(4.4_C) ambient outdoor
temperature in cooling mode.
3. Unit shall be provided with 60--second fan time delay after
the thermostat is satisfied.
J. Electrical Requirements:
All unit power wiring shall enter the unit cabinet at a single
location.
K. Motors:
1. Compressor motors shall be of the refrigerant--cooled type
with line-- break thermal and current overload protection.
2. All fan motors shall have permanently lubricated bearings,
and inherent, automatic reset, thermal overload protection.
3. Condenser fan motor shall be totally enclosed.
4. Evaporator Fan Motor to be high--efficiency ECM motor.
5. Condenser fan motor shall be totally enclosed.
PH3G -- -- A
31
Page 32
GUIDE SPECIFICATIONS (CONT)
L. Special Features Available:
1. Coil Options:
Base unit with tin plated indoor coil hairpins.
2. Compressor Start Kit (single phase units only
Shall provide additional starting torque for single--phase
compressors.
3. Thermostat:
To provide for two--stage heating and one--stage cooling in
addition manual or automatic changeover and indoor fan
control.
4. Crankcase Heater:
Shall provide anti--floodback protection for lowload cooling
applications.
5. Economizer:
a. Economizer controls capable of providing free cooling
using outside air.
b. Equipped with low leakage dampers not to exceed 3%
leakage, at 1.0 IN. W .C. pressure differential.
c. Spring return motor shuts off outdoor damper on power
PH3G -- -- A
failure.
6. Electric heaters:
a. Electric heater shall be available as a field installed
option.
b. Heater elements shall be open wire type, adequately
supported and insulated with ceramic bushings.
c. Electric heater packages must provide single point
power connection capability.
7. Filter Rack Kit:
Shall provide filter mounting for downflow applications.
8. Flat Roof Curb:
Curbs shall have seal strip and a wood nailer for flashing
and shall be installed per manufacturer’s instructions.
9. Low Ambient Package:
Shall consist of a solid--state control and outdoor coil temperature sensor for controlling outdoor--fan motor operation, which shall allow unit to operate down to 0_F
(--17.7_C) outdoor ambient temperature.
10. Louvered Grille:
Wire grille shall be standard on all units. Louvered grille
shall be available as a field-- installed option to provide hail
guard and vandalism protection.
11. Manual Outdoor Air Damper:
Package shall consist of damper, birdscreen, and rainhood
which can be preset to admit outdoor air for year--round
ventilation.
12. Square--To--Round Duct Transitions (24--48 size):
Shall have the ability to convert the supply and return openings from rectangular to round.
E2011 Payne Heating & Cooling Systems D7310 W. Morris St. D Indianapolis, IN 46231Printed in U.S.A.Edition Date: 02/11
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
32
C a t a l o g N o : S S --- P H 3 G --- 0 3
R e p l a c e s : S S --- P H 3 G --- 0 1
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