Pentair ETi 400 User manual

NSTALLAT ON GU DE
MPORTANT!
WARN NG! FOR YOUR SAFETY: TH S PRODUCT MUST BE NSTALLED
AND SERV CED BY AUTHOR ZED SERV CE PERSONNEL
QUAL F ED N POOL/SPA NSTALLAT ON
ETi® 400 H GH EFF C ENCY HEATER
GAS CONTROL VALVE
REPLACEMENT K T
/N 476001

ETi 400 Hight Ef•ciency Heater Gas Control Valve Replacement Kit Installation Guide
2
P/N 476111 Rev A 1  /2017
Customer Service and Technical Support
If you have questions about ordering Pentair Water Pool and Spa
and Sta-Rite®replacement parts, and pool products, please call:
Phone: [phone]
Fax: [phone]
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visit www.pentairpool.com
Contents
IMPORTANT WARNING AND SAFETY INSTRUCTIONS................................ 3-4
Gas Control Valve Replacement Kit Overview .......................................................5
Required Tools ...................................................................................................5
Gas Connection Warnings ........................................................................... 5-6
Gas Control Valve Replacement Kit Information ...............................................6
Function .......................................................................................................7
Servicing Procedure..........................................................................................7
Gas Pressure Setting Verification......................................................................8
Specifications....................................................................................................9
Parts List...........................................................................................................9

ETi 400 Hight Efficiency Heater Gas Control Valve Replacement Kit Installation Guide ETi 400 High Efficiency Heater Gas Control Valve Replacement Kit Installation Guide
3
Most states and local codes regulate the construction, installation, and
operationofpublicpoolsandspas,andtheconstructionofresidentialpoolsand
spas. It is important to comply with these codes, many of which directly regulate the installation
and use of this product. Consult your local building and health codes for more information.
SERIOUS BODILY INJURY OR DEATH CAN RESULT IF THIS
PRODUCT IS NOT INSTALLED AND USED CORRECTLY.
Before installing this product, read and follow all warning notices
and instructions in this Guide. Failure to follow warnings and
instructions can result in severe injury, death, or property damage.
Call [phone] for additional free copies of these instructions. Please refer to www.
pentairpool.com for more information related to this products.
IMPORTANT NOTICE - Attention Installer: This Installation Guide
(“Guide”) contains important information about the installation, operation
and safe use of this product. This Guide should be given to the owner and/or
operator of this heater.
IN CANADA: THE CONVERSION SHALL BE CARRIED OUT IN ACCORDANCE WITH THE
REQUIREMENTS OF THE PROVINCIAL AUTHORITIES HAVING JURISDICTION AND IN
ACCORDANCE WITH THE REQUIREMENTS OF THE NATURAL GAS AND PROPANE
INSTALLATION CODE CSA B149.1
READ AND FOLLOW ALL INSTRUCTIONS IN THIS MANUAL
INSTALLERS, POOL OPERATORS AND POOL OWNERS MUST
READ THESE WARNINGS AND ALL INSTRUCTIONS BEFORE
USING THE ETi®400 HIGH EFFICIENCY HEATER.
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
Failure to follow instructions could result in fire or explosion with
serious injury or property damage. This conversion kit shall be installed
by a qualified service agency in accordance with the manufacturer’s
instructions and all applicable codes and requirements of the
authority having jurisdiction. The information in these instructions must
be followed to minimize the risk of fire or explosion or to prevent
property damage, personal injury, or death. The qualified service agency
is responsible for the proper installation of this kit. The installation is not
proper and complete until the operation of the converted appliance is
checked as specified in the manufacturer’s instructions supplied with the
kit.

ETi 400 Hight Ef•ciency Heater Gas Control Valve Replacement Kit Installation Guide
4
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
Risk of fire or explosion from incorrect fuel use or faulty fuel
conversion. Do not try to run a heater set up for natural gas on propane
gas or vice versa. Only qualified service technicians should attempt to
convert heater from one fuel to the other. Do not attempt to alter the
rated input or type of gas by changing the orifice. If it is necessary to
convert to a different type of gas, consult your Pentair dealer.
Serious malfunction of the burner can occur which may result in loss
of life. Any additions, changes, or conversions required in order for the
appliance to satisfactorily meet the application needs must be made by
a Pentair dealer or other qualified agency using factory specified and
approved parts.
Risk of explosion if a unit converted to propane gas is installed in a
pit or other low spot. Propane is heavier than air. Do not install the heater
using propane in pits or other locations where gas might collect.
Consult your local building code officials to determine installation
requirements of heater relative to propane storage tanks and filling
equipment. In Canada, Installation must meet the requirements of the
Standard for the Storage and Handling of Liquid Petroleum Gases,
CAN/CSA B149.1 (latest edition). In the U.S. installation must meet the
requirements of the Standard for the Storage and Handling of Liquefied
Petroleum Gases, ANSI/NFPA 58 (latest edition). Consult local codes and
fire protection authorities about specific installation restrictions.
Propane (LPG) fired heaters must not be installed in garages in
Massachusetts, by order of the Massachusetts State Fire Marshall. For
more information, call the Fire Marshall’s office.
IN CANADA: “THIS KIT SHALL BE CARRIED OUT IN ACCORDANCE WITH
THE REQUIREMENTS OF THE PROVINCIAL AUTHORITIES HAVING
JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF
THE CAN-B149.1 AND CAN-B149.2 INSTALLATION CODE.”

ETi 400 Hight Efficiency Heater Gas Control Valve Replacement Kit Installation Guide ETi 400 High Efficiency Heater Gas Control Valve Replacement Kit Installation Guide
5
Gas Control Valve Replacement Kit Overview
Before proceeding with the ETi®400 High Efficiency Heater Gas Control Valve
replacement kit, please verify that you have all the items listed as shown below in the
Required Tools.
Required Tools (not included in kit)
You will need the following tools and instruments for this conversion:
1 5/16” socket wrench or nut driver
1 T20 bit Torx screw driver
1 Channel locks
1 Adjustable wrench, 2-1/2” Capacity
1 Adjustable wrench, 1-1/2” Capacity
1 Flat Blade Screwdriver
1 1/8” NPT barbed fittings
1 Pipe Sealant approved for use with natural gas or Propane
1 Pressure gauge or manometer with range to 14” W.C. (High Pressure
Gauge)
1 Differential pressure gauge or slope gauge (inclined manometer) capable
of reading to a resolution of 0.05” W.C. (Low Pressure Gauge)
1 Flue-gas analyzer reading CO2 (optional)
Note: Do not attempt the heater conversion without all the listed tools shown
above.
Gas Connections
Failure to follow instructions could result in fire or explosion with serious injury or
property damage.This combustion blower replacement kit is to be installed by a
Sta-Rite®and/or Pentair Water Pool and Spa (“Pentair”) distributor or other qualified
agency in accordance with the manufacturer’s instructions and all codes and require-
ments of the authority having jurisdiction. The qualified agency performing this work
assumes responsibility for this replacement. The term “qualified agency” means any
individual, firm, corporation or company which either in person or through a repre-
sentative is engaged in and is responsible for (a) the installation or replacement of
gas piping or (b) the connection, installation, repair,
or servicing of equipment, who is experienced in such work, familiar with all precau-
tions required, and has complied with all the requirements of the authority having
jurisdiction.

ETi 400 Hight Ef•ciency Heater Gas Control Valve Replacement Kit Installation Guide
6
Risk of fire and explosion. Improper installation, adjustment, alteration, service, or
maintenance of the Combination Gas Control Valve can lead to fire or explosion,
causing loss of life, personal injury, or property damage.
These instructions are for the use of qualified service technicians only!
Do not attempt this procedure unless you have been trained and certified in the care
and repair of gas-fired appliances!
Do not attempt this procedure if you are not confident about following instructions!
This appliance is equipped with an unconventional gas control valve that is factory set
with a manifold pressure of –.2” wc. Installation or service must be performed by a
qualified service technician or the gas supplier. If this control valve is replaced, it must
be replaced with an identical control.
NOTICE: Before converting the heater, make the necessary gas connections to the
new gas supply, following the instructions in the ETi®400 High Efficiency Heater
Installation and User’s Guide.Verify the maximum and minimum regulated gas pres-
sures from the gas
INSTRUCTIONS FOR CHECKING THE GAS PRESSURE THROUGH THE
COMBINATION GAS CONTROL VALVE.
Gas Control Valve Replacement Kit Information
Function
The Combination Gas Control Valve incorporates dual gas shut-off valves and a
negative-pressure regulator. The negative-pressure regulator controls the outlet pres-
sure to slightly below the reference pressure supplied to the regulator diaphragm by
the vent line. For proper operation, the regulated pressure at the outlet manifold of the
valve must be 0.2” wc below the reference pressure, and the gas “vent” tap must be
connected to the Mixer inlet.
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ETi 400 Hight Efficiency Heater Gas Control Valve Replacement Kit Installation Guide ETi 400 High Efficiency Heater Gas Control Valve Replacement Kit Installation Guide
7
Servicing Procedure
The Gas Control Valve is located at the bottom of the gas train and can be accessed
by the manifold service panel. See figure 1.
1. Turn off the electrical supply to the heater.
2. Turn off the pump.
3. Turn OFF the
manual gas supply
valve to the heater.
4. Remove the water
manifold service
panel. Using a
flat-blade
screwdriver, insert
press and turn
the screwdriver to
unlock the panel.
5. Disconnect and discard the plastic tubing from the gas control valve “VENT”
port.
6. Disconnect and discard the tubing between the blower, and the air flow switch
and install the new plastic tubing (provided in the kit).
7. Unscrew completely the union nearest to the gas valve on both sides
8. Remove the gas piping from the old valve and install it in the new valve. Use
thread sealant approved for natural gas and Lp gas.
9. Replace the Gas Control Valve by screwing the union on both sides of the gas
valve.
10. Connect the plastic tubing to the Vent Port at the Gas Control Valve.
11. Turn on the manual gas supply valve to the heater.
12. Turn on the pump and the electric power to the heater.
13. Test for gas leaks with a soapy water solution.
Fuel Recommended CO2
(Dry Basis)
NG 7.80% – 9.2%
Propane 9.6% – 10.2%
Table 2. Flue Gas CO2 and O2 Ranges
Figure 1.
Panel latch lock
PUMP
FILTER
HEATER
MANUAL
BY-PASS
TO
POOL
GATE
VALVE
FROM
POOL
FROM
FILTER
INLET
OUTLET

ETi 400 Hight Ef•ciency Heater Gas Control Valve Replacement Kit Installation Guide
8
Fire and explosion hazard. The Air Orifice is sized specifically for the air/gas
mixture required by the burner. Do not modify the Air Orifice or replace it with
an orifice of a different size.
Fire and explosion hazard. The Combustion Blower handles a combustible
air/gas mixture. When servicing this part, check all seals for tightness to
ensure that the Blower is not leaking.
Gas Pressure Setting Verification
After completing the Servicing Procedure (see page 7) proceed with the following
steps to verify the gas supply pressure.
1. Turn off the electrical supply to the heater.
2. Turn off the pump and shut off the manual gas supply valve to the heater.
3. Use a 3/16” hex key to remove the plug from the PRESSURE TAP port on the
outlet side of the Combination Gas Control Valve.
4. Install a 1/8” NPT barbed fitting into the ‘PRESSURE TAP’ port on the outlet
side of the gas valve. Use a flexible tube to connect it to the low side of a
differential pressure gauge or a slope gauge. This gauge will measure low
(outlet) pressure, which requires a high degree of resolution.
5. Turn on the manual gas shutoff valve.
6. Before operating the heater, leak-test all of the gas connections with soapy
water.
WARNING! Risk of fire or explosion. Never test for gas leaks with an
open flame.
7. Turn on electricity to heater and start the pump.
8. Turn on the heater.
NOTICE: If you are using a slope gauge, close the shutoff valve of the
gauge to avoid pulling the liquid out of the gauge when the blower starts.
9. After the burner lights, verify that the supply pressure is within the range 4” to
12” wc. If the supply pressure drops below this range when the burner ignites,
the gas line capacity may be inadequate, and should be increased.
10. With the burner still on, disconnect the plastic hose between the gas valve and
“VENT” tap and the blower mixer inlet. The pressure gauge should then read
.2” ±.1” wc . (Since the pressure tap is connected to the low side of the gauge,
the pressure is actually negative.) If the pressure is outside the range listed,
call the factory at 1-800-831-7133. Do not try to adjust the pressure yourself.

ETi 400 Hight Efficiency Heater Gas Control Valve Replacement Kit Installation Guide ETi 400 High Efficiency Heater Gas Control Valve Replacement Kit Installation Guide
9
Gas Pressure Setting Verification (Continued)
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Parts List for Gas Control Valve Kit P/N 476001
Description Qty. P/N
Gas Valve Kit 1 467001
Elbow taped 1/8 mpt x 1/4 ID 1 33202-0656T
Tubing PVC 0.25 ID x 0.375 in OD x 7.5 in 1 475845
Tubing PVC 0.25 ID x 0.375 in OD x 15.5 in 1 475847
Gas Control Valve 1 42001-0051
Label Kit MT 1 472585
1/4 in Tee Fitting 1 475850
Installation Guide, Heater Gas Control Valve 1 476111
Inlet Pressure:
Min./Max: 4” / 12” WC
Manifold Pressure:
Reference to Blower inlet tap: -0.2” WC
Required Gas Input (BTU/Hr): 399.990 BTU/Hr
Model: ETi®400 High Efficiency Heater
11. If the pressure is within the limits given in step 10, the gas pressure is at the
optimum level. Reconnect the plastic hose between the GAS VALVE VENT
TOP and the BLOWER MIXER INLET.
12. Remove the 1/8” NPT barbed fitting from the PRESSURE TAP port on the
outlet side of the gas valve and reinstall the plug. Be sure it is tightened
properly.Turn OFF the heater and manual gas supply valve.
13. Run the heater continuously for at least 10 minutes, then insert a
combustion analyzer probe into the exhaust and measure the CO2 level. The
recommended CO2 ranges for natural gas and propane are listed in Table 2,
on page 8. Preferably, the readings should be in the midrange.
14. Replace the water manifold service panel. See Figure 1 on page 7.

ETi 400 Hight Ef•ciency Heater Gas Control Valve Replacement Kit Installation Guide
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