Pentair 75 User Manual

Warning:

1

MiniMax® 75 & 100

ABOVEGROUND POOL & SPA HEATERS

OPERATION & INSTALLATION MANUAL

IMPORTANT SAFETY INSTRUCTIONS

READ AND FOLLOW ALL INSTRUCTIONS

SAVE THESE INSTRUCTIONS

WARNING

FOR YOUR SAFETY - READ BEFORE OPERATING

If you do not follow these instructions exactly, a fire or explosion may result,
causing property damage, personal injury or loss of life. Call [phone]
for additional free copies of these instructions.

Consumer

Retain For

Future

Reference

U.S. Patent Numbers
5,201,307 - 4,595,825

WARNING

Warning: Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury or death. Installation and service must be performed by a
qualified installer, service agency or the gas supplier.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

For Your
Safety

• Do not touch any electrical switch; do not use any phone in your building.

• 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.

To

Do not store or use gasoline or other flammable vapors and liquids in
the vicinity of this or other appliances.

Pentair Pool Products

1620 Hawkins Ave., Sanford, NC 27330 • [phone]

10951 West Los Angeles Ave., Moorpark, CA 93021 • [phone]

Rev. F 1-22-04 P/N 471105

2

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Direct Spark Ignition Lighting/Operation - Natural & Propane . . . . . . . . . . . . . . . . . . . 5

Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

To Turn Off Gas to Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Millivolt Lighting/Operation - Natural & Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

To Turn Off Gas to Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating (Controls) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Heater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Controls Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Energy Saving Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Spring and Fall Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Winter Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Chemical Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Pool and Spa Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Outdoor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Indoor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Plumbing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Manual Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Water Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Quick-Flange II Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Gas Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Gas Line/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Pipe Sizing Chart/Gas Pressure Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Regulated Manifold Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Gas Pressure Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Outdoor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Indoor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Vent Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Stack Type Indoor Draft Hood Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Indoor Draft Hood Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Transformer Wiring Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Electronic Direct Spark Ignition Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Millivolt Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Trouble Shooting (General). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Parts List & Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21, 22

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

P/N 471105 Rev. F 1-22-04

3

Introduction

MiniMax® 75 & 100

ABOVEGROUND POOL AND SPA HEATERS

Congratulations on your purchase of a MiniMax 100 high performance heating system. Proper installation and
service of your new heating system and correct chemical maintenance of the water will ensure years of enjoyment.
The MiniMax 100 is a compact, lightweight and efficient gas fired high performance aboveground pool and spa
heater that can be connected to schedule 40 CPVC or ABS pipe and has a built-in top. Unless noted otherwise, all
instructions refer to both the MiniMax 75 and MiniMax 100 heaters designated collectively as the "MiniMax 100".
The heater features include the following features.

• Reliable direct-spark ignition (DSI) system available in propane or natural gas versions.

• Millivolt standing pilot versions in propane and natural gas, when no convenient line power is present.

• Fuel gas input of 100,000 btu/hr with thermal efficiency in excess of 82%, (74,999 for the 75 Model).

• Quiet and dependable operation from packaged burner system proven reliable in worldwide usage.

• Heat exchanger constructed of premium non-corroding materials including bronze headers standard.

• The controls have been designed to be very easy to troubleshoot and very easy to access and replace in the
rare event of a malfunction-making the MiniMax 100 user friendly.

IMPORTANCE NOTICES FOR THE INSTALLER AND OPERATOR.

The manufacturer’s warranty may be void if, for any reason, the heater is improperly installed and /or operated.
Be sure to follow the instructions set forth in this manual.

These heaters are designed for the heating of swimming pools and spas, and should never be employed for use as
space heating boilers, general purpose water heaters, or for the heating of salt water.

CODES

The installation must conform with local codes or in the absence of local codes with the latest National Fuel Gas
Code, ANSI Z223.1, and the latest edition of the National Electrical Code, NFPA 70.

Installation in Canada to be made in accordance with the latest CAN/CGA-B149.1 or .2 and CSA C22.1
Canadian Electric Code, part 1.

Rev. F 1-22-04 P/N 471105

4

This instruction manual provides operating instructions, installation, and service information for the MiniMax 100
high performance heater. The information in this manual applies to the MiniMax 75, and 100, natural gas and
propane, DSI; and MiniMax 100 millivolt standing pilot heater models.
It is very important the owner/installer read and understand the section covering installation and recognize the
local code and state codes before installing the MiniMax 100. History and experience have shown that

most heater damage is caused by improper installation practices.

WARRANTY INFORMATION

The MiniMax 100 pool heater is sold with a limited factory warranty. Specific details are described on the
back cover of this manual and a copy of the warranty and warranty registration card are included with
the product. Return the warranty registration card after filling in the serial number from the rating plate inside the

heater. For ordering parts, you should indicate model and serial numbers of the heater. If the parts are
requested for warranty, you must also indicate the date of installation.

Pentair Pool Products high standards of excellence include a policy of continuous product
improvement resulting in your state-of-the-art heater. We reserve the right to make improvements
which change the specifications of the heater without incurring an obligation to update current heater
equipment.

Operation

SAFETY RULES

1. Spa or hot tub water temperatures should never
exceed 104 °F (40 °C). A temperature of 100 °F
(38 °C) is considered safe for a healthy adult.
Special caution is suggested for young children.

2. Drinking of alcoholic beverages before or
during spa or hot tub use can cause drowsiness
which could lead to unconsciousness and
subsequently result in drowning.

3. Pregnant women beware! Soaking in water
above 102° F. (39° C.) can cause fetal damage
during the first three months of pregnancy
(resulting in the birth of a brain-damaged or
deformed child). Pregnant women should stick
to the 100° F. (38° C.) maximum rule.

4. Before entering the spa or hot tub, the user should
check the water temperature with an accurate
thermometer. Spa or hot tub thermostats may err
in regulating water temperatures by as much as
4° F. (2.2° C.).

5. Persons with medical history of heart disease,
circulatory problems, diabetes or blood pressure
problems should obtain their physician's advice
before using spas or hot tubs.

6. Persons taking medication which induce
drowsiness, such as tranquilizers, antihistamines or
anticoagulants should not use spas or hot tubs.

WARNING

Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the
appliance. Do not use this heater if any part has been under water. Immediately call a qualified service
technician to inspect the heater and to replace any part of control system and gas control which has
been under water.

P/N 471105 Rev. F 1-22-04

Operation (contd.)

MINIMAX 100 DIRECT-SPARK IGNITION LIGHTING/OPERATION­NATURAL GAS & PROPANE

FOR YOUR SAFETY: READ BEFORE LIGHTING

WARNING

If you do not follow these instructions exactly, a fire or explosion may result causing personal injury,
loss of life and property damage.

Since propane gas is heavier than air, escaping propane will accumulate and remain at ground level.
Do not attempt to light the heater. If you suspect a propane leak, lighting the heater can result in a fire
or explosion which can cause personal injury, death, and property damage.

5

A. This heater is equipped with an ignition device

which automatically lights the main burner. Do not
try to light the main burner by hand.

B. BEFORE OPERATING smell all around the heater

area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will settle
on the floor.

WHAT TO DO IF YOU SMELL GAS

- Do not try to light any heater.

- Do not touch any electric switch; do not use any
phone in your building.

- 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.

C. Use only your hand to push in or turn the gas

control knob. Never use tools. If the knob will not
push in or turn by hand, don't try to repair it. Call a
qualified service technician. Forced or attempted
repair may result in a fire or explosion.

D. Do not use this heater if any part has been under

water. Immediately call a qualified service
technician to inspect the heater and to replace any
part of the control system and any gas control
which has been under water.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Set the thermostat to lowest setting, fully counterclockwise.

3. Turn off electric power to the heater.

4. This heater is equipped with an ignition device which automatically lights
the main burner. Do not try to light the main burner by hand.

5. Remove the control access door.

6. Turn the gas control lever horizontally to "OFF"; see Figure 1.

7. Wait five (5) minutes to clear out any gas. If you then smell gas, STOP!
Follow "B" in the safety information above. If you don't smell gas, go to the
next step.

8. Turn the gas control lever vertically to "ON".

9. Replace the control access door.

10. Turn on the electrical power to the heater.

11. Set the thermostat to the desired setting.

12. If the heater will not operate, follow the instructions "To Turn Off Gas To
Heater" and call your service technician or gas supplier.

Figure 1.

TO TURN OFF GAS TO HEATER

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the heater if service
is to be performed.

3. Remove control access door.

Rev. F 1-22-04 P/N 471105

4. Turn gas control lever horizontally to "OFF".

Do not force.

5. Replace control access door.

Operation (contd.)

MILLIVOLT LIGHTING/OPERATION- NATURAL GAS & PROPANE

FOR YOUR SAFETY: READ BEFORE LIGHTING

WARNING

If you do not follow these instructions exactly, a fire or explosion may result causing personal injury,
loss of life and property damage.

Since propane gas is heavier than air, escaping propane will accumulate and remain at ground level. Do
not attempt to light the heater. If you suspect a propane leak, lighting the heater can result in a fire or
explosion which can cause personal injury, death, and property damage.

6

A. This heater has a pilot that must be lit manually. When

lighting the pilot follow these instructions exactly.

B. BEFORE LIGHTING smell all around the heater area

for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

- Do not try to light any heater.

- Do not touch any electric switch; do not use any phone
in your building.

- 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.

C. Use only your hand to push in or turn the gas control

knob. Never use tools. If the knob will not push in or
turn by hand, don't try to repair it. Call a qualified service
technician. Forced or attempted repair may result in a
fire or explosion.

D. Do not use this heater if any part has been under water.

Immediately call a qualified service technician to inspect
the heater and to replace any part of the control system
and any gas control which has been under water.

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Set the thermostat to the lowest setting.

3. Turn off all electric power to the heater.

4. Remove the control access door.

5. Push in the gas control valve slightly and turn clockwise to "OFF"; see Figure 2.

6. The knob cannot be turned from "PILOT" to "OFF" unless the knob is

pushed in slightly. Do not force.

7. Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow "B" in the
safety information above. If you don't smell gas, go to next step.

8. Turn the knob on the gas control to counterclockwise to "PILOT"; see Figure 3.

9. Push the control knob all the way and hold in. Immediately light the pilot with
Presslite matchless ignition system by pressing the red igniter button, (located at
panel next to the gas valve). Continue to hold the control knob in for about (1)
minute after the pilot is lit. Release knob and it will pop back up. Pilot should remain
lit. If it goes out, repeat steps 4 through 7.

10. If the knob does not pop up when released, stop and immediately call your service
technician or gas supplier.

11. If the pilot, see Figure 4, will not stay lit after several tries, turn the gas control knob
to "OFF" and call your service technician or gas supplier.

12. Turn the gas control knob counterclockwise to "ON".

13. Replace the control access door.

14. If the heater will not operate, follow the instructions "To Turn Off Gas To Heater"
and call your service technician or gas supplier.

(SIT valve)

Figure 2.

All Gas knob's shown
in "OFF" position.

IN

PILOT ADJ

ON

OFF

VENT

TH

TH

TP

TP

(Robertshaw valves)

Figure 3.

TO TURN OFF GAS TO HEATER

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the heater if service is to be performed.

3. Remove control access door.

4. Turn gas control lever horizontally to "OFF". Do not force.

5. Replace control access door.

P/N 471105 Rev. F 1-22-04

Figure 4.

Operation (contd.)

7

OPERATING (CONTROLS)

DIRECT SPARK ELECTRONIC AND
MILLIVOLT MODELS

For convenience and economy all MiniMax 100
heaters are equipped with a thermostat on the front of
the heater control panel; see Figure 5.

Direct Spark MiniMax 100 heaters are equipped
with an electronic thermostat while Millivolt MiniMax
100 heaters have a mechanical thermostat.

The Pool/Off/Spa switch allows the heater to be turned
off when heating is not desired.

1. "ON" position - Maintains selected pool temperature.

2. "OFF" position - Heater will not come on regardless
of drop in pool temperature.

THERMOSTAT ADJUSTMENT

The knob with locking feature eliminates the need for
constant thermostat adjustments. Set the knob pointer
to the desired spa temperature.

NOTE
To eliminate error due to piping heat losses
measure pool temperature with an accurate
thermometer directly at the pool or spa.

If further adjustment is needed rotate the knob until
the desired temperature is obtained. This knob position
corresponding to your desired maximum pool or spa
temperature may now be preset (locked) by the knob
stopper which prevents the knob from being turned
beyond the maximum temperature you set.

THERMOSTAT KNOB STOPPER

Each thermostat is equipped with a mechanical stop
that can be locked or unlocked with use of a screw­driver to prevent temperatures in excess of that
desired by the user; see Figure 5.

The maximum setting can be adjusted by loosening
the screw "A" and turning the stopper dial to desired
maximum setting. Lock the setting by tightening the
screw. The Mechanical stop is under the knob.
Ensure that the knob is stopping at the correct posi­tion when the knob is rotated clockwise from a lower
temperature position.

HEATER OPERATION

GENERAL

The MiniMax 100 DSI employs a microprocessor
based Direct Spark Ignition (DSI) system to light the
main burner and therefore has no pilot. The ignition
circuit operates at 24 VAC and requires that line
voltage 115/230 be supplied to the heater.

The MiniMax 100 MV (Millivolt) requires no external
power source and the control circuit derives all its
power from the energy generated from the standing
pilot/ thermopile-generator combination. Note: Some

states ,including California, have energy conservation
regulations preventing the sale and use of certain
standing pilot (millivolt) equipment.

The MiniMax 100 DSI Control utilizes a
microprocessor to continually and safely monitor,
analyze, and control the proper operation of the gas
burner. The DSI Control features LED diagnostics,
automatic one hour reset, and flame current test pins.
The LED is located on the DSI.

CONTROLS OPERATION (DSI SYSTEM)

Heat Mode

1. When a call for heat is received from the thermostat
supplying 24 volts to TH terminal on control, the
control will reset, perform a self check routine, and
flash the diagnostic LED for up to four seconds.
After a brief delay the gas valve is energized and
the ignition electrode begins to spark for the four
(4) second trial for ignition (TFI) period.

2. When flame is detected during the trial for ignition,
sparking is shut-off immediately and the gas valve
remains energized. The thermostat and main burner
flame are constantly monitored to assure the system
continues to operate properly.

a.When the thermostat is satisfied and the demand

for heat ends, the main valve is de-energized
immediately.

Figure 5.

Knob Stopper

Rev. F 1-22-04 P/N 471105

Screw A

Operation - Heater (contd.)

Failure to Light- Lockout

1. Should the main burner fail to light, or flame is not
detected during the trial-for-ignition (TFI) period
the control will go into lockout and the valve will
be turned off immediately.

2. Recovery from lockout requires a manual reset by
resetting the thermostat or turning off the ON/OFF
switch for a minimum period of 5 seconds.

IMPORTANT!
IT IS RECOMMENDED THAT NO MORE THAN
TWO IGNITION ATTEMPTS IN SUCCESSION
BE PERFORMED FOR NATURAL GAS
SYSTEMS . BEFORE FURTHER IGNITION
ATTEMPTS WAIT AT LEAST FIVE MINUTES
FOR GAS TO CLEAR.

FOR PROPANE (LPG) SYSTEMS ALLOW AT
LEAST FIVE (5) MINUTES BETWEEN IGNITION
ATTEMPTS FOR THIS HEAVIER-THAN-AIR
GAS TO SAFELY DISSIPATE. AFTER TWO
UNSUCCESSFUL IGNITION ATTEMPTS WITH
PROPANE OPEN THE BURNER ACCESS
DOOR AND WAIT AT LEAST THIRTY (30)
MINUTES BEFORE REPLACING DOOR TO
ATTEMPT FURTHER IGNITION ATTEMPTS.

8

Control Fault -Diagnostic LED Conditions

Error Mode LED Indication

Internal Control Failure Steady on

Flame Sense Fault 2 flashes

Ignition Lockout 3 flashes

The DSI Ignition Control can be accessed after removing
the heater’s front control panel. The diagnostic LED
located on the top of the DSI control will flash on for 1/4
second, then off for 1/4 second during a fault condition.
The pause between fault codes is 3 seconds.

NOTE

Normally the heater will light in the first or
second attempt. And with the exception of
a new installation or one that has been
shut down for an extended period, where
there is considerable air trapped in the gas
supply line, unsuccessful ignition
indicates other problems with the ignition
system - such as an unclean ignition
electrode impeding flame sensing.

3. If the thermostat is still calling for heat one hour
after a lockout the control will automatically reset
and attempt to ignite the burner again.

Flame Failure-Re-Ignition

1. If the established flame signal is lost while the
burner is operating, the control will respond within

0.8 seconds. The H.V. spark will be energized for a
trial for ignition period in an attempt to relight the
burner.

a. If the burner does not light the control will

de-energize the gas valve, shutting off the gas
flow, and the control will go into lockout as
described above in “Failure to Light-Lockout”.
If flame is re-established, normal operation
resumes.

P/N 471105 Rev. F 1-22-04