Heil HVAC PGR5 Ultra Low NOx 2-Stage Packaged Air Conditioner and Single Stage Gas Furnace System Owner’s Manual
- June 5, 2024
- Heil HVAC
Table of Contents
PGR5 Ultra-Low NOx
15 and 16 SEER
2-Stage Packaged Air Conditioner and Single Stage Gas Furnace
System With R-410A Refrigerant
Single and Three Phase
2-5 Nominal Tons (Sizes 24-60)
PGR5 Ultra Low NOx: Owner’s Information Manual
A09034
Fig. 1 – Unit PGR5
NOTE TO EQUIPMENT OWNER:
For your convenience, please record the model and serial numbers of your new
equipment in the spaces provided. This information, along with the
installation data and dealer contact information, will be helpful should your
system require maintenance or service.
UNIT INFORMATION
Model #____
Serial #____
ACCESSORIES (List type of model #)
INSTALLATION INFORMATION
Date Installed____
DEALERSHIP CONTACT INFORMATION
Company Name_
Address___
Phone Number__
Technician Name
NOTE TO INSTALLER:
This manual must be left with the eqipment owner.
Our products are designed, tested, and built-in accordance with DOE
standardized procedures; however, actual operating results and efficiencies
may vary based on manufacturing and supplier tolerances, equipment
configuration, operating conditions, and installation practices.
Safety Considerations
Improper installation, adjustment, alteration, service maintenance, or use can
cause an 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.
Follow all safety codes. Wear safety glasses, protective clothing, and work
gloves. Have a fire extinguisher available. Read these instructions thoroughly
and follow all warnings or cautions included in the literature and attached to
the unit. consult local building codes, the current editions of the National
Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code
(NEC) NFPA 70.
In Canada refer to the current editions of the National Standards of Canada
CAN/CSA-B149.1 and.2 Natural Gas and Propane Installation Codes, and Canadian
Electrical Code CSA C22.1
Recognize safety information. This is the safety alert symbol . 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 that could result in personal injury or death.
CAUTION is used to identify unsafe practices which may result in minor
personal injury or product and property damage.
NOTE is used to highlight suggestions that will result in enhanced
installation, reliability, or operation.
NOTE: Installer: This manual should be left with the equipment user.
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury and/or death.
Carbon Monoxide (CO) is a colorless, odorless, and tasteless poisonous gas
that can be fatal when inhaled. Follow all installation, maintenance, and
service instructions. See additional information below regarding the
installation of a CO Alarm.
Most states is the USA and jurisdictions in Canada have laws that require the use of Carbon Monoxide (CO) alarms with fuel-burning products. Examples of fuel-burning products are furnaces, boilers, space heaters, generators, water heaters, stoves/ranges, clothes dryers, fireplaces, incinerators, automobiles, and other internal combustion engines. Even if there are no laws in your jurisdiction requiring a CO Alarm, it’s highly recommended that whenever any fuel-burning product is used in or around the home or business that the dwelling be equipped with a CO Alarm(s). The Consumer Product Safety Commission recommends the use of CO Alarm(s). The CO Alarm(s) must be installed, operated, and maintained according to the CO Alarm manufacturer’s instructions. For more information about Carbon Monoxide, local laws, or to purchase a CO Alarm, please visit the following website https://www.kidde.com
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
Installation and servicing of this equipment can be hazardous due to
mechanical and electrical components. Only trained and qualified personnel
should install, repair, or service this equipment.
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, and/or
property damage.
Do not store or use combustible materials, gasoline, or other flammable vapors
and liquids in the vicinity of this or any other appliance.
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
Do not use this unit if any part has been under water. Immediately call a
qualified service technician to inspect the unit and to replace any part of
the control system which has been under water.
WARNING
FIRE AND EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury,
death, or property damage.
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
– Do not try to light any appliance.
– Do not touch any electrical switch; do not use any phone in your building.
– Leave the building immediately.
– Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
– If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service
agency, or gas supplier.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury and/or death.
Before performing recommended maintenance, be sure the main power switch to
the unit is turned off and a lock-out tag is installed. There may be more than
one disconnect switch.
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, and/or
property damage.
- Do not turn off the electrical power to the unit without first turning off the gas supply.
- Before attempting to start the gas heating section, familiarize yourself with all the procedures that must be followed.
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, and/or
property damage.
Do not attempt to light by hand. Never attempt to manually light the main
burners on the unit with a match, lighter, or any other flame. If the electric
sparking device fails to light the main burners, refer to the following
shutdown procedures, then call your dealer as soon as possible.
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
When removing access panels or performing maintenance functions inside your
unit, be aware of sharp sheet metal parts and screws.
Although special care is taken to reduce sharp edges to a minimum, be
extremely careful and wear appropriate protective clothing, safety glasses,
and gloves when handling parts or reaching into the unit.
Unit Introduction
This unit is a small packaged gas heat/electric cooling system that utilizes the comfort of gas heating packaged along with efficient electric air conditioning. This unit uses Puron®, the environmentally balanced refrigerant for cooling.
Starting or Shutting Off Unit
NOTE: Your combination heating/cooling unit is equipped with automatic
direct spark ignition and a power combustion blower.
To start unit gas heat:
Refer to Fig. 2 for the location of the unit front access panel. Refer to Fig.
3 for the location of the gas valve. Refer to Fig. 4 while proceeding with the
following steps.
- Set the temperature selector on the room thermostat to the lowest temperature setting and set the system switch to HEAT.
- Close the external manual gas shutoff valve.
- Turn off the electrical supply to the unit.
- Remove the control access panel with a 5/16-in. nut driver. (See Fig. 2.)
- Move the selector switch on the internal gas valve to the OFF position and wait 5 minutes.
- Move the selector switch on the internal gas valve to the ON position.
- Replace the control access panel.
- Turn on the electrical supply to the unit.
- Open the external manual gas shutoff valve.
- Set the temperature selector on the room thermostat slightly above room temperature to start the unit. The induced-draft combustion air fan will start. The main gas valve will open and the main burners should ignite within 25 seconds. If the burner does not light within 25 seconds, the ignition module will go into a Retry Mode after a period of approximately 20 seconds (following the 7-second ignition period). If the burners do not light by the 4th ignition try the initial call for heat, there is a lockout.
- Set the temperature selector on the room thermostat to the desired setting.
WARNING
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, and/or
property damage.
- If the main burners fail to light, or the blower fails to start, shut down the gas heating section and call your dealer for service.
- Never attempt to manually light the main burners on the unit with a match, lighter, or any other flame. If the electric sparking device fails to light the main burners, refer to the following shutdown procedures, then call your dealer as soon as possible.
To shut off unit gas heat:
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, and/or
property damage.
Do not turn off the electrical power to the unit without first turning off the
gas supply.
NOTE: If the unit is being shut down because of a malfunction, call your
dealer as soon as possible.
Should overheating occur or the gas supply fail to shut off, shut off the
external manual gas valve to the unit before shutting off the electrical
supply. Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the unit and to
replace any part of the control system and any gas control which has been
under water.
Refer to Fig. 5 while proceeding with the following steps.
- Set the temperature selector on the room thermostat to the lowest temperature setting and set system SWITCH to OFF.
- Close the external manual shutoff valve.
- Turn off the electrical power supply to the unit.
- Remove the control access panel. (See Fig. 2.)
- Move the selector switch on the internal gas valve to the OFF position.
- Replace the control access panel.
To start unit electric cooling:
Refer to Fig. 6 while proceeding with the following steps.
- Set the temperature selector on the room thermostat to the highest temperature setting and set system SWITCH to OFF.
- Close the external manual shutoff valve, if not already closed.
- Turn ON the electrical power supply to the unit.
- Set system switch to COOL.
- Set the temperature selector on the room thermostat slightly below the room temperature to start the unit.
To shut off unit electric cooling:
Refer to Fig. 7 while proceeding with the following steps.
- Set the temperature selector on the room thermostat to the highest temperature setting and set system SWITCH to OFF.
- Close the external manual shutoff valve, if not already closed.
- Turn off the electrical power supply to the unit.
Operating Your Unit
The operation of your unit is controlled by the indoor temperature control
(thermostat). You simply adjust the thermostat and it maintains the indoor
temperature at the level you select. Most thermostats of heating and cooling
systems have 3 controls: a temperature control selector, a FAN control, and a
SYSTEM or MODE control. Refer to your thermostat owner’s manual for more
information.
To better protect your investment and to eliminate unnecessary service calls,
familiarize yourself with the following facts:
Cooling Mode
With the SYSTEM control set to COOL, your unit will run in cooling mode until
the indoor temperature is lowered to the level you have selected. On extremely
hot days, your unit will run for longer periods at a time and have shorter
“off” periods than on moderate days.
Gas Heat Mode
With the SYSTEM or MODE control of your indoor thermostat set to HEAT, your
unit will run in heating mode until room temperature is raised to the level
you have selected. On cold days and nights, your system will typically run for
longer periods of time and have shorter “off” periods than on moderate days.
Maintenance and Service
This section discusses maintenance that should be performed on your system. Most maintenance should be performed by your dealer. You, as the owner, may wish to handle some minor maintenance for your new unit.
Routine Maintenance
All routine maintenance should be handled by skilled, experienced personnel.
Your dealer can help you establish a standard procedure.
For your safety, keep the unit area clear and free of combustible materials,
gasoline, and other flammable liquids and vapors.
To assure proper functioning of the unit, the flow of condenser air must not
be obstructed from reaching the unit. Clearance from the top of the unit is 48
in. (1219 mm). Clearance of at least 36 in. (914 mm) is required on sides
except for the power entry side (42 in. (1067 mm) clearance) and the duct side
(12 in. (305 mm) minimum clearance). Also, ensure that the return-air duct
connection (s) is physically sound, is sealed to the furnace casing, and
terminates outside the space containing the furnace.
Maintenance and Care for the Equipment Owner
Before performing equipment maintenance yourself, please carefully consider
the following:
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND CUT HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
- Turn off the gas supply first, then all electrical power to your unit, and install a lockout tag before servicing or performing maintenance.
- When removing access panels or performing maintenance functions inside your unit, be aware of sharp sheet metal parts and screws. Although special care is taken to reduce sharp edges to a minimum, be extremely careful when handling parts or reaching into the unit. Wear safety glasses, gloves, and appropriate protective clothing.
Clear Away Debris and Vegetation Near Unit
To assure proper functioning of the unit, the flow of condenser air must not
be obstructed from reaching the unit. Clearance from the top of the unit is 48
in. (1219 mm). Clearance of at least 36 in. (914 mm) is required on sides
except for the power entry side (42 in. [1067 mm] clearance) and the duct side
(12 in. [305 mm] minimum clearance). Also, ensure that the return-air duct
connection (s) is physically sound, is sealed to the furnace casing, and
terminates outside the space containing the furnace.
Air Filters
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in property damage.
Never operate your unit without filters in place. An accumulation of dust and
lint on internal parts of your unit can cause loss of efficiency and blower
motor and/or compressor damage.
The air filter(s) should be checked every 3 or 4 weeks and changed or cleaned
whenever it becomes dirty. Dirty filters produce excessive stress on the
blower motor and can cause the motor to overheat and shut down.
This unit must have air filters in place before it can be operated. These
filters can be located in one of at least two places. In many applications,
the installer will provide return air filter grilles mounted on the wall or
ceiling of the conditioned structure. In the instance of filter grilles, the
filters can simply be removed from the grille and replaced.
The other typical application is an accessory filter rack installed inside the
unit itself. The following information is given to assist in changing the
filters used in these internal filter racks.
Filter kits are available as a purchased accessory or a factory-installed
option. The same filter kit is included with the accessory economizers and
factory-installed economizers.
Table 1 – Indoor Air Filter Data
Unit Size | Filter Size in. (mm) |
---|---|
24-040/060 | 2 each 20 x 12 x 1 (508 x 305 x 25 mm) |
30-040/060 | 2 each 20 x 12 x 1 (508 x 305 x 25 mm) |
36-060 | 1 each 24 x 14 x 1 (610 x 406 x 25), 24 x 16 x 1 (610 x 406 x 25) |
42-060/090 | 1 each 24 x 14 x 1 (610 x 356 x 25), 24 x 16 x 1 (610 x 406 x 25) |
48-090* | 1 each 24 x 16 x 1 (610 x 406 x 25), 24 x 18 x 1 (610 x 457 x 25) |
60-090* | 1 each 24 x 16 x 1 (610 x 406 x 25), 24 x 18 x 1 (610 x 457 x 25) |
*Units with bent indoor coil.
To replace or inspect filters in the accessory filter rack (See Fig. 2):
-
Remove the filter access panel using a 5/16-in. nut driver.
-
Remove the filter(s) by pulling it out of the unit. If the filter(s) is dirty, clean or replace it with a new one.
When installing the new filter(s), note the direction of the airflow arrows on the filter frame which should be pointing at the indoor coil. -
Reinstall filter access panel ensuring opening is air and watertight.
If you have difficulty locating your air filter(s) or have questions concerning proper filter maintenance, contact your dealer for instructions. When replacing filters, always use the same size and type of filter that was supplied originally by the installer. See Table 1 for filter sizes supplied with the accessory filter racks.
Fans and Fan Motors
Periodically check the condition of fan wheels and housings and fan motor
shaft bearings. Contact your dealer for the required annual maintenance.
Heat Exchanger
To ensure dependable and efficient heating operation, the heat exchanger
should be checked by a qualified maintenance person before each heating season
and cleaned when necessary. This checkout should not be attempted by anyone
not having the required expertise and equipment to properly do the job.
Contact your dealer for the required periodic maintenance.
Indoor and Outdoor Coils
Cleaning of the coils should only be done by qualified service personnel.
Contact your dealer for the required annual maintenance.
Condensate Drain
The drain pan and condensate drain line should be checked and cleaned at the
same time the cooling coils are checked by your dealer.
Compressor
All compressors are factory shipped with a normal charge of the correct type
of refrigeration grade oil.
Condenser (Outdoor) Fan
WARNING
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
Do not insert sticks, screwdrivers, or any other objects into revolving fan
blades.
The fan must be kept free of all obstructions to ensure proper cooling.
Contact your dealer for any required service.
Electrical Controls and Wiring
Electrical controls are difficult to check without proper instrumentation.
If there are any discrepancies in the operating cycle, contact your local
dealer and request service.
Refrigerant Circuit
The refrigerant circuit is difficult to check for leaks without the proper
equipment. If inadequate cooling is suspected, contact your local dealer for
service.
WARNING
EXPLOSION AND ENVIRONMENTAL HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
The system is under pressure. 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.
Unit Panels
After performing any maintenance or service on the unit, be sure all panels
are fastened securely in place to prevent rain from entering the unit cabinet
and to prevent disruption of the correct unit airflow pattern.
Combustion Area and Vent System
For proper and safe operation, the unit needs air for combustion and
ventilation. The air openings, on the unit, the air openings to the area in
which the unit is installed, and the spacing around the unit must not be
blocked or obstructed.
The combustion air inlet area and vent hood should be inspected visually
before each heating season. The normal accumulation of dirt, soot, rust, and
scale can result in loss of efficiency and improper performance if allowed to
build up. This inspection should be done by a trained service person.
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, and/or
property damage.
If your unit makes an especially loud noise when the main burners are ignited,
shut down the heating section and call your dealer.
CAUTION
BURN HAZARD
Failure to follow this caution may result in personal injury.
Components in the heating section may be hot after the unit has been started
up. When observing flame, be careful not to get close to or touch heating
components.
Warranty Certificate
Your unit has a limited warranty. Be sure to read the warranty carefully to
determine the coverage for your unit.
Before you call for service…
…check for several easily-solved problems.
If insufficient heating or cooling is suspected:
( ) Check for sufficient airflow. Check the air filter for dirt. Check for
blocked return-air or supply-air grilles. Be sure they are open and
unobstructed. If these checks do not reveal the cause, call your servicing
dealer.
If your unit is not operating at all, check the following list for easy
solutions:
( ) Check to be sure that your thermostat temperature selector is set below
the indoor temperature during the cooling season or above the indoor
temperature during the heating season. Be sure the SYSTEM switch or MODE
control is in the COOL or HEAT position and not in the OFF position.
( ) If your unit still fails to operate, call your servicing dealer for
troubleshooting and repairs. Specify the model and serial numbers of your
unit. (Record them in this manual in the space provided.) If the dealer knows
exactly which unit you have, he may be able to offer suggestions over the
phone or save valuable time through knowledgeable preparation for the service
call.
In Case of Trouble
If you perform the steps above and unit performance is still unsatisfactory,
shut off the unit and call your dealer.
Table 2 – Maintenance Checklist
Monthly maintenance items and outdoor unit rinsing may be performed by the
consumer. All other maintenance items and all service work must be performed
by a qualified service technician. Read all Warning labels.
Description of Maintenance | Recommended Interval |
---|---|
Consumer specific: | Monthly |
Inspect, clean, or replace air filter if the filter is located indoors in
return air grille.| ×|
Clear away debris and vegetation near the unit.| ×|
Dealer specific:| |
Inspect cabinet and baseman for damage. Replace panels, gaskets, and other
components that are damaged or severely rusted. Make sure precipitation has
not entered an indoor section of the unit.| | ×
Inspect electrical disconnect for proper function. Repair or replace as
necessary.| | ×
Inspect electrical wiring and connections. Tighten loose connections. Inspect
and perform a functional tests of equipment as needed to ensure proper
function. Repair or replace damaged or overheated components and wiring.| | ×
Inspect temperature and pressure safety controls for damage| | ×
Inspect and clean if necessary, combustion air openings and vent hood| | ×
Check gas piping and shutoff valve for leaks.| | ×
Check refrigerant system subcooling and/or superheat (system dependent).| | ×
Inspect inside of the unit. Clean if debris is present.| | ×
Inspect condenser coil. Clean if dust, dirt, or debris is present. Rinse unit
with fresh water (see Note 2).| | ×
Inspect condenser motor and fan for damage. Make sure the fan spins freely.| |
×
Inspect and clean blower assembly (includes blower housing, wheel, and
motor).| | ×
Inspect evaporator coil. Clean if dust, dirt, or debris is present (see Note
2).| | ×
Clean condensate pan and drain lines (more frequent maintenance may be
required in humid climates – consult your local HVAC dealer).| | ×
Inspect airflow system (ductwork). Check for leaks and repair as needed.| | ×
Notes:
-
The above list may not include all maintenance items. Inspection intervals may vary depending on climate and operating hours. Consult your HVAC dealer about a service
contract for seasonal inspections. -
Do not use harsh chemicals or high-pressure water on coils. More frequent rinsing is required for units near the sea coast.
The manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 46202220001
A Carrier Company
Replaces: NEW
© 2021 Carrier. All rights reserved.
Edition Date: 08/21