American Water Heater Polaris High Efficiency Commercial Gas Water Heater PCG3 User Manual

							21
WIRING DIAGRAM
HEATER SUPPLIED WITH T92 SERIES RELAY
HEATER SUPPLIED WITH KUHP SERIES RELAY
NOTICE:  IF ANY OF THE ORIGINAL WIRE 
AS SUPPLIED WITH THE APPLIANCE 
MUST BE REPLACED, IT MUST BE 
REPLACED WITH 18 GAUGE STRANDED 
105C WIRE OR ITS EQUIVALENT.THERMOSTAT
      BOARDIGNITION
CONTROL
IGNITION
CONTROL BLOWERHSI
HSIG L1L2 IND
120 VAC
24 VAC
GAS VALVE
     RELAY
RED LED
GREEN LED
YELLOW LED
THERMOSTAT
SENSOR-ECO
C
GV
W
POT N.O.
24 V
 HOT
ONLY COM
THERMOSTAT
        DIAL
     TO 120/60
POWER SUPPLY
SEN-1
LOWER
IGNITER
GND
GND
GND GND     FUSED
DISCONNECT
L1NEUTRAL
GND
PSIPSO
PRESSURE
SWITCH
BLACK
WHITE
WHITE
RED
LED
YELLOW
LED
GREEN
LEDBROWN
YELLOW
RED
THERMOSTAT
DIAL
ORANGE
GAS VALVE
BROWNBLUE
BLUE WHITE
IGNITER
RED
GREEN YELLOW
ORANGE RED
24V
120V TRANSFORMER
BLACK
GREENGROUND
BLACK
BLACK/WHITE
IGNITION
CONTROL
120V/60Hz
BLOWER
GREEN
WHITE
THERMOSTAT 
BOARD
NO COM
RELAYPOT
SEN-1
LOWER
24V
HOT
ONLY
THERMOSTAT
SENSOR/ECO
YELLOW
REDRED
RED
GREENBLACK
GREEN BLUE
IND
L1
HSI
HSIG
L2
W
PSI
GV
PSO
FSG
C
COMMON (C)
PRESSURE
SWITCH
NORMALLY OPEN
(NO)
NEUTRAL (WHITE)
L1 (BLACK)
FUSED
DISCONNECTEDTO 120/60
POWER
SUPPLY
120 VAC
(BLACK & WHITE 
WIRES IN BOLD)
BLACK/WHITEBLACK/RED
L2 N.O.
WHITE
BLACK/RED
RELAY
BLACK
8
6 01
GREEN
WHITEBLACK
RELAY68
10RELAY
COIL
Figure 20A
Figure 20B 
						

							22
INSTALLATION CHECKLIST
Water Heater Location 
Requirements
… Centrally located with the water piping system. Located 
as close to the gas piping and vent pipe system as pos-
sible.
…  Located indoors and in a vertical position. Protected   
from freezing temperatures.
…  Proper clearances from combustible surfaces main-
tained and not installed directly on a carpeted floor. 
Sufficient room to service the water heater.
…  Provisions made to protect the area from water dam-
age. Properly sized metal drain pan installed and piped 
to an adequate drain.
…  Installation area free of corrosive elements and      
flammable materials.
Condensate Line
… Drain stem is fully inserted in the elbow and glued   
properly.
… Trap aligned so that the exhaust pipe is in a vertical 
position close to the surface of the water heater.
… Line properly sloped to adequate drain or approved    
condensate pump.
… Properly vented.
… Protected from freezing (if required).
Vent Pipe System
… Vent pipe and fittings of approved material. 
… Acceptable size, length, and number of elbows on air 
inlet pipe.
… Acceptable size, length, and number of elbows on 
exhaust outlet pipe.
… Add the air inlet filter per the manufacturer’s instruction.
… Installed in accordance with prevailing provisions of 
Local codes, or in the absence of such, National  Fuel  
Gas Code, NFPA 54, ANSI Z223.1-Current Edition.  
Canadian Installations must be performed in accor-
dance with CAN/CSA-B149.1-Current Edition.
… All 2” horizontal piping sloped down toward the water 
heater at 1/4” per foot (21 mm per meter). 3” piping 
sloped down towards the heater at 1/8” per foot (10.5 
mm per meter). 
… Not obstructed in any way.
Vent Termination    
       Horizontal
… Correct relationship - outlet to inlet.
… 12” Min. (30.5 cm) above grade/snow level.
… 2” exhaust outlet/air inlet pipe sloped down towards 
water heater at 1/4” per foot (21 mm per meter).  3” 
piping sloped down towards the heater at 1/8” per foot 
(10.5 mm per meter). 
… Away from corners, other vents, windows, etc.
 Alternate Horizontal
… Correct relationship - outlet to inlet.
… 12” Min. (30.5 cm) above anticipated snow level.
… 2” exhaust outlet/air inlet pipe sloped down towards 
water heater at 1/4” per foot (21 mm per meter).  3” 
piping sloped down towards the heater at 1/8” per foot 
(10.5 mm per meter). 
… Away from corners, other vents, windows, etc.
       
Vertical
… Inlet - 12” Min. (30.5 cm) above roof/snow level.
… Correct relationship - outlet to inlet.
… Away from corners, other vents, windows, etc.
 
Concentric
… 12” Min. (30.5 cm) above grade/snow level.
… 2” exhaust outlet/air inlet pipe sloped down towards 
water heater at 1/4” per foot (21 mm per meter).  3” 
piping sloped down towards the heater at 1/8” per foot 
(10.5 mm per meter). 
… Away from corners, other vents, windows, etc.
Water System Piping
… Temperature and pressure relief valve properly 
installed with a discharge line run to an open drain and 
protected from freezing.
… All piping properly installed and free of leaks.
… Heater completely filled with water.
… A properly sized expansion tank must be installed on all 
closed systems.
… A mixing valve must be installed per the manufacturer’s 
instructions.
Gas Supply and Piping
… If using a flexible gas connector, make sure its rating 
tag matches or exceeds the input of the  water heater.
… Adequate pipe size and of approved material.
… Gas supply is the same type as listed on the water    
heater data plate.
… Gas line equipped with full opening shut-off valve,   
union and drip leg.
… Approved pipe joint compound used.
… Chloride-free soap and water solution or other  ap-
proved means used to check all connections and fit-
tings for possible gas leaks.
Electrical Connections
… Unit connected to a dedicated power supply.
… Unit connected to a 120V electrical supply.
… Proper polarity.
… Water heater properly grounded.
… Installed in accordance with prevailing provisions of 
local codes, or in the absence of such, National Fuel  
Gas Code, NFPA 54, ANSI Z223.1-Current Edition.  
Canadian installations must be performed in accor-
dance with CAN/CSA-B149.1-Current Edition. 
						

							23
OPERATING YOUR WATER HEATER
Read and understand these directions thoroughly before 
attempting to operate the water heater (see Operating 
Instructions on Page 24).  Check the data plate on the 
front of the water heater for the correct gas. Do not use this 
water heater with any gas other than the one listed on the 
data plate.  If you have any questions or doubts, consult 
your gas supplier or gas utility company.
L.P. (Propane) Models
Propane gas is heavier than air and in the occurrence of 
a leak in the system, the gas will settle on the floor level.  
Basements, crawl spaces, skirted areas under mobile 
homes (even when ventilated), closets and areas below 
ground level will serve as pockets for the accumulation of 
gas.  Before lighting a propane gas water heater, smell all 
around the appliance at floor level.  If you smell gas, follow 
the instructions as given in the warning on the front page.
When your propane tank runs out of fuel, turn off the gas 
at all gas appliances including pilot lights.  After the tank 
is refilled, all appliances must be re-lit according to their 
manufacturer’s instructions.
Water Heater Operation
This water heater does not have a pilot light.  It is equipped 
with an electronic ignition that automatically lights the 
burner.  There are three lights to indicate the various stages 
of operation;  Green = Electrical power is on, Yellow = 
Thermostat is calling for heat, which signals the beginning 
of the ignition sequence (see figure 21), and Red = Ignition 
control is signaling the gas valve to open.
Figure 21: Sequence of Operation
When the thermostat calls for heat, the blower will run for 
6 seconds to purge the system of any accumulated gas or 
air.  The hot surface igniter will heat up for 35 seconds. The 
blower will turn on and the gas valve open, forcing the air 
and gas mixture across the hot surface igniter, causing the 
burner to light.  The hot surface igniter will turn off and act 
as an electronic flame sensor to determine if burner ignition 
has been accomplished.  If it detects any loss of flame, it 
will shut off the gas supply to the burner.
The ignition control will try to light the burner three times. 
If the ignition control does not detect a flame after three 
tries, it will temporarily lock out, but then auto restart and go 
through three additional tries for ignition after 60 minutes. 
It will repeat until ignition occurs or the system locks out 
requiring service. Refer to Troubleshooting Guide on Page 27.
Thermostat Sensor
The sensor is a 10K ohm [at 77°F (25°C)] thermistor.  Read 
resistance through the black wires that run to the sensor. 
Remove wires from circuit board before checking.  An open 
or short circuit indicates sensor failure.  Check reading 
against the values listed in Table 3.  The resistance should 
correspond with the temperature in the tank: 
Table 3:
                Temperature                 I         Resistance
60°F 16°C 15,300 ohms
80°F 27°C 9,300 ohms
100°F 38°C 5,800 ohms
120°F 49°C 3,800 ohms
140°F 60°C 2,500 ohms
160°F 71°C 1,700 ohms
185°F 85°C 1,100 ohms
          
						

							24occurrence of igniter failure due to excessive condensate.
Important:  A mixing valve (provided) must be installed in 
the hot water outlet to reduce the risk of scald injury when 
setting the thermostat in excess of 120°F (48.9°C).
Many home heating systems 
used with this water heater are 
designed for temperatures higher 
than 130°F (54.4°C). Refer to 
the manufacturer’s instruction 
manuals supplied with this type 
of equipment for recommended 
temperature settings.   
Important:  Adjusting the 
thermostat past the 120°F 
(48.9°C) setting on the 
temperature dial (see figure 22) will increase the risk of scald 
injury. Hot water can produce first degree burns within:
(48.9°C)*
(54.4°C)*
(60°C)*
(48.9°C)*
(54.4°C)*
(60°C)*
* Temperatures shown are approximates 
  and may vary.
(48.9°C)
(54.4°C)
(60°C)
Figure 22: 
Temperature Dial
Stacking
Stacking occurs when a series of short draws of hot water 
(3 gallons [11.3 liters] or less) are taken from the water 
heater tank. This causes increased cycling of the burner 
and can result in increased water temperatures at the hot 
water outlet.  A mixing valve must be installed in the hot 
water supply line to reduce the risk of scald injury.
Water Temperature Regulation
The thermostat is adjusted to its lowest temperature setting 
when it is shipped from the factory. Water temperature 
can be regulated by moving the temperature dial to the 
preferred setting.  The preferred starting point is 130°F 
(54.4°C); however, in some instances, setting the water 
heater higher than 130°F (54.4°C) can reduce the 
Water temperature over 125°F (51.6°C) can cause 
severe burns instantly or death from scalds.
Children, disabled and elderly are at highest risk 
of being scalded.
See instruction manual before setting 
temperature at water heater.
Feel water before bathing or showering.
Temperature limiting valves are available.
Water 
Temperature 
°F (°C)Time for 1st 
Degree Burn 
(Less Severe Burns)Time for Permanent Burns 
2nd & 3rd Degree 
(Most Severe Burns)
110 (43.3)
116 (46.7)
122 (50)
131 (55)
140 (60)
(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15,1978)
(normal shower temp.)
(pain threshold)
35 minutes 45 minutes
116 (46.7)
1 minute 5 minutes
5 seconds 25 seconds
2 seconds 5 seconds
1 second 2 seconds
149 (65)
154 (67.8)
instantaneous
1 second
Table 4
Emergency Shut Down
Important: If overheating occurs or the gas supply fails to 
shut off, close the manual gas supply valve.  Turn off the 
electrical supply to the unit and close the cold water supply 
valve.  Do not operate the water heater again until it has been 
thoroughly checked by an authorized service technician. 
						

							25
OPERATIONAL CONDITIONS
MAINTENANCE
Water Heater Sounds
During the normal operation of the water heater, sounds or 
noises may be heard. These noises are common and may 
result from the following:
1.  Normal expansion and contraction of metal parts    
during periods of heat-up and cool-down.
2.  Sediment buildup in the tank bottom will create varying 
amounts of noise and may cause premature tank fail-
ure. Drain and flush the tank as directed under “Drain-
ing and Flushing”.
Safety Shut-Off (Pressure Switch)
This water heater is equipped with a pressure switch that 
protects the unit by shutting it down in the event that:
• A blockage occurs in the combustion air inlet, the    
flue gas exhaust outlet, or both the inlet and outlet.
• The condensate line freezes and the condensate    
“backs up” and fills the exhaust outlet.
• The blower fails to operate, or operates improperly.
• The unit begins to operate at an abnormally low     
input level.
Energy Cut-Off (ECO)
A high temperature limit switch, or ECO, is used to shut 
down the water heater if the water temperature exceeds 
203°F (95°C).  The ECO will automatically reset when 
the temperature cools sufficiently.  If the ECO shuts down 
the heater repetitively, contact a qualified professional for 
service.
Draining and Flushing
It is recommended that the tank be drained and flushed 
every 6 months to remove sediment which may buildup 
during operation. The water heater should be drained if 
being shut down during freezing temperatures.
To drain the tank, perform the following steps:
1.  Turn off the gas supply at the Manual Gas Shut-off   
  Valve. Turn off the electrical supply to the water    
 heater.
2.  Open a nearby hot water faucet and run until the    
  water is no longer hot.
3.    Close the cold water inlet valve.
4.  Open the left-hand access panel at the bottom of the 
heater (see figure 23).  Connect a hose to the drain 
valve and terminate it to an adequate drain or external 
to the building.
5.    Open the water heater drain valve and allow all of the 
water to drain from the tank. 
6.  Flush tank to remove sediment. 
7.  Close the drain valve, replace access door, refill      
the tank, and restart the heater as directed under     
“Operating Your Water Heater”. IMPORTANT: Condensation may occur when refilling the 
tank and should not be confused with a tank leak.
Temperature and Pressure 
Relief Valve
Manually operate the 
temperature and pressure 
relief valve at least once 
a year to make sure it is 
working properly.  To prevent 
water damage, the valve 
must be properly connected 
to a discharge line which 
terminates at an  adequate 
drain. Standing clear of the 
outlet (discharged water may 
be hot), slowly lift and release 
the lever handle on the  
temperature and pressure relief valve to allow the valve to 
operate freely and return to its closed position (see figure 
24). If the valve  fails to completely reset and continues to 
release water, immediately shut off the manual gas valve 
and the cold water inlet valve, and call a qualified service 
technician.
Drain Valve 
Behind  
Access Door
Figure 23: Drain Valve Access
Figure 24Figure 24 
						

							26
MAINTENANCE OF YOUR WATER HEATER
3 Month Inspection
At least every 3 months, a visual inspection should be 
made of the combustion air inlet as well as the exhaust and 
water piping.  Check the water heater for the following:
•  Obstructions, damage, or deterioration in the venting 
system. Make sure the exhaust and  combustion air 
supplies are not obstructed. 
•  Leaking or damaged water and gas piping.
•  Presence of flammable or corrosive materials in the 
installation area.
•  Presence of combustible materials near the water   
heater.
Important: Verify proper operation after servicing this water 
heater.
Gas Valve
The gas valve on this water heater has been permanently 
set at the factory for proper operation.  No field adjustments 
are needed and none should be performed.
Removing the Gas Valve
Removal and replacement of the gas regulator valve  
involves the disconnection of gas piping and electrical 
leads. This procedure must be performed by a qualified 
service technician.
Important:  When removing the gas valve, do not use a 
pipe wrench or vise to grip the body. Do not apply any force 
to the gas valve or the cast flange fitting on the inlet side 
of the gas valve (see figure 25.) Such force may break or 
crack these components.
1.  Turn temperature dial counterclockwise to the lowest    
setting and turn off electrical power to appliance.
2.  Shut off the gas at the manual shut-off valve on the    
gas supply line. See figure 19 for reference.  Remove    
the access door.
3.  Disconnect the gas piping connection just outside   
the base of the water heater .  Note:  Use a second 
pipe wrench on the gas piping inside the skirt to avoid 
cracking the gas valve or the flange fitting.   
4.  Remove the pressure tap from the gas valve (see     
figure 25).  The hose should not be disconnected.
5.  Remove the Phillips head screw holding the electrical    
plug and remove electrical plug from the gas valve.
6.  Remove the three T-25 Torx head brass screws that  
  attach the gas valve to the venturi manifold, using   
the T-25 Torx wrench supplied with the gas valve kit 
(model VK8115V, part number 6903775.)
7.  Remove the gas valve from the unit keeping the     
rubber gasket with the gas valve .
8.  Remove the flange from the gas inlet side  of the valve 
by removing the four (4) attachment  screws.
Figure 25
Replacing the Gas Valve
Important:  The rubber gasket that seals the gas valve to 
the venturi manifold must be used (previous gaskets may 
be reused, if in good condition).  Make sure the gasket is 
properly inserted into the recess on the gas valve prior to 
installation (see figure 25 for exact placement of the rubber 
gasket).  
1.  Remove the O-ring from the flange (removed from the 
old gas valve) and replace it with the one provided 
in the gas valve kit (model VK8115V, part number 
6903775.)
2.  Reattach the elbow flange to the gas valve.  Tighten  all 
four screws securely.
3.  Place the three T-25 Torx screws through the proper     
holes in the venturi manifold flange.  See figure 25.
4.  Properly install a new rubber gasket (provided) as       
shown in figure 25.
5.  Position the gas valve and start all three screws 
(projecting downward from the venturi manifold) into  
the gas valve.  A T-25 Torx wrench has been provided  
in the gas valve replacement kit (model VK8115V, part 
number 6903775.)
Note: All three T-25 Torx screws must be properly tightened 
to secure the seal between the gas valve and the venturi 
manifold. 
6.  Reconnect the pressure tap to the port on the new gas  
valve (see figure 25).
7.  Reconnect the external gas supply line to the gas pip-
ing  on the gas valve. Be sure to use approved Teflon 
tape or pipe joint compound suitable for gas piping.
Note:  Use a second pipe wrench on the gas piping inside 
the skirt to avoid cracking the gas valve or the cast fitting.
8.  Reconnect the electrical plug to the gas valve and       
secure it with the screw provided.
9.  Turn gas supply on and check for leaks. Use a chlo-
ride-free soap and water solution (bubbles forming 
indicate a leak) or other approved method. All leaks 
must be fixed immediately.
10.  Be sure tank is completely filled with water before re-
storing power to the water heater. Follow operating      
instructions on Page 24.
11.  Ensure proper operation of the water heater, then rein-
stall the access door.
If additional information is required, contact the Product 
Service and Support Group through our website:
www.americanwaterheater.com. 
						

							27
TROUBLESHOOTING
  Table 5:
Ignition Control Module (ICM) LED Error Codes: (Flashes visible through viewport in access door)
FLASHES INDICATED PROBLEM CONTROL REACTION
1 Pressure Switch Closed SC*
2 Pressure Switch Open SL
3 Failed Ignition SL3
4 Gas Valve Hardware Fault SL
5 Flame Sense Hardware Fault SC
6 False Flame SL**
8 Ignition Control Hardware Fault SL
9 Ignition Control Software Fault SL
Rapid L1 Polarity Detection SC
SL (Soft Lockout):  Control Automatically resets after 60 minutes.
SL3 (Soft Lockout/Hard Lockout):  Control automatically resets after 60 minutes, with a maximum of 3 resets, followed by hard lockout requiring service.
SC (Self Clearing):  Control will function normally as soon as it no longer detects the previously indicated fault.
* when pressure switch or blower relay opens
** when flame is no longer sensed.
† Blower Isolation Relay is used on models 150,000 BTU/Hr and above.
Note: If unit goes into a soft or hard lock-out the ignition control module can be reset by cycling power to the water heater. 
						

							28
SOFTWARE OPERATION SEQUENCE
IGNITION CONTROL MODULE SOFTWARE OPERATION SEQUENCE 
						

							29
REPAIR PARTS LIST/DIAGRAM
ITEM
NO.PARTS DESCRIPTION
1 1” NPT x 2.5” BRASS NIPPLE
2 THERMOSTAT SENSOR BUSHING
3 O-RING
4 THERMOSTAT SENSOR/ECO
5 INVERTED FLARE NUT
6 PLUG
7 VINYL TUBING
8 PRESSURE SWITCH
9 COMBUSTION BLOWER
10 4 INCH (10.16 cm) DIAMETER BLOWER GASKET
11 BURNER (NATURAL AND L.P. SAME)
12 6 INCH (15.24 cm) DIAMETER BURNER GASKET
13 HOT SURFACE IGNITER
14 IGNITER BRACKET
15 VENTURI MANIFOLD
16 REDUCING COUPLING
17 INLET AIR / FILTER ASSEMBLY
18 GAS VALVE
19 1/2” NPT 90 DEGREE INLET FLANGE
20 1/2” NPT X 2” NIPPLES
21 1/2” NPT ELBOWS
22 1/2” NPT X 4.5” NIPPLE
23 RED LED
24 YELLOW LED
25 GREEN LED
26 THERMOSTAT BEZEL
27 TEMPERATURE SELECTOR KNOB
28 THERMOSTAT BOARD
29 IGNITION CONTROL
30 TRANSFORMER
31A 2” (DN 50mm) CONDENSATE TRAP ASSEMBLY
31B 3” (DN 80mm) CONDENSATE TRAP ASSEMBLY
32 COLD WATER TUBE ASSEMBLY
33 TEMPERATURE AND PRESSURE RELIEF VALVE
34 DRAIN VALVE
35 POTENTIOMETER
36 VENTURI GASKET (not pictured)
37 BLOWER ISOLATION RELAY
TOOLS REQUIRED FOR SERVICING
  TOOL FUNCTION
VOLT OHMMETER MEASURE VOLTAGE/RESISTANCE
CLAMP-ON AMMETER MEASURE  CURRENT
STOPWATCH CLOCK GAS CONSUMPTION
CALCULATOR CALCULATE INPUT RATE
U-TUBE MANOMETER READ INLET GAS PRESSURE
3/16-inch (≈ 4.76 mm) ID PLASTIC TUBING 
(2 FT [61 cm])CONNECT MANOMETER
#1 & #2 PHILLIPS SCREWDRIVERS REMOVE DOORS AND CONTROLS
12” (30.48 cm) PIPE WRENCH 
(2 REQUIRED)REMOVE GAS LINE
SAE 1/2” COMBINATION WRENCH REMOVE BLOWER AND BURNER
SAE 1/2” SOCKET AND RATCHET REMOVE BLOWER AND BURNER
SAE 3/8” COMBO WRENCH/NUT DRIVERREMOVE IGNITER
T-25 TORX WRENCH REMOVE THE GAS VALVE
(ALSO HELPFUL - SAE 9/32” and 5/16” COMBINATION WRENCHES)
When ordering repair parts always give the 
following information:
1.  Model, serial, and product numbers
2.  Type of gas 
3. Item number
4. Parts description
Repair Parts List 
						

							30
POLARIS MODELS & DIMENSIONS
MODEL 
NUMBERGAL. 
CAP.INPUT 
(MBTU 
PER HR.)VENT 
DIA. EXTERIORWATER 
CONNECTIONST&P 
HGTGAS 
SUPPLYAIR 
INLET/EX-
HAUSTAPPROX 
SHIP. 
WEIGHT A B C D E F G
PGC* 34-100-2NV OR 2PV 34 100 2 OR 348-1/2 2215-3/4 40-1/2 41 6-3/8 5-1/2 / 6-5/8 150
PGC* 34-130-2NV OR 2PV 34 130 2 OR 348-1/2 22 15-3/440-1/2 41 6-3/8 5-1/2 / 6-5/8 150
PGC* 34-150-2NV OR 2PV 34 150 2 OR 348-1/2 22 15-3/440-1/2 41 6-3/8 5-1/2 / 6-5/8 150
PGC* 50-130-2NV OR 2PV 50 130 2 OR 362-3/8 22 15-3/454-1/2 55 6-3/8 5-1/2 / 6-5/8 176
PGC* 50-150-2NV OR 2PV 50 150 2 or 363-3/4 22 15-3/455-3/4 56-1/4 6-3/8 5-1/2 / 6-5/8 180
PGC* 50-175-3NV OR 3PV 50 175 363-3/4 22 15-3/455-3/4 56-1/4 6-3/8 5-1/2 / 6-5/8 180
PGC* 50-199-3NV OR 3PV 50 199 363-3/4 22 15-3/455-3/4 56-1/4 6-3/8 5-1/2 / 6-5/8 180
  * Indicates warranty period
Figure 26
Table 6: