Honeywell L4031C, L4031A User Manual

L4031A,C

Pool Heater Aquastat

Controller

FEATURES

• Pool control regulates pool water temperature.

• L4031A pool side control is ambient-temperature compensated so changes in air temperature do not affect water temperature.

• High limit provides shutdown protection to prevent boiler overheating.

• L4031A provides automatic high limit reset.

• L4031C requires manual high limit reset.

• Each limit control has its own remote-bulb sensing element and snap switch for system control.

PRODUCT DATA

GENERAL

The L4031A,C Pool Heater Aquastat® units are designed to control pool water temperatures and provide high limit boiler control.

Contents

General ............................................................................... 1

Features .............................................................................. 1

Specifications ...................................................................... 2

Ordering Information ........................................................... 2

Installation ........................................................................... 3

Setting and Checkout .......................................................... 5

Material Safety Data Sheets ............................................... 6

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L4031A,C POOL HEATER AQUASTAT® CONTROLLER

SPECIFICATIONS

IMPORTANT

Models:

High Limit

Range:

Differential:

Electrical Rating (A):

Full Load 8.0 5.1 Locked Rotor 48.0 30.6 Powerpile® (millivoltage) is 0.25A at 0.25 to 12 Vdc.

Pool Control

Range:

The specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.

L4031A Pool Heater Aquastat

water temperature and provides automatic reset high limit boiler control.

L4031C Pool Heater Aquastat

water temperature and provides manual reset high limit boiler control.

L4031A: 100°F to 240°F (38°C to 116°C) (each division

represents 5°F degrees).

L4031C: 110°F to 290°F (43°C to 143°C) (each division

represents 5°F degrees).

L4031A: Fixed 5°F (3°C). L4031C: Manual reset.

L4031A: 40°F to 180°F (4°C to 82°C) (each division

represents 5°F degrees).

L4031C: 100°F to 240°F (40°C to 116°C) (each division

represents 5°F degrees).

Controller controls pool

120 Vac 240 Vac

Differential:

L4031A: Fixed 2°F (1°C) or 5°F (3°C). When 5°F (3°C),

the electrical rating is the High Limit Electrical Rating.

L4031C: Fixed 5°F (3°C).

Electrical Rating:

L4031A:

Pilot Duty: 125 VA at 120 and 240 Vac. Powerpile

L4031C: Same as high limit.

Bulb Mounting:

For list of compression fittings and immersion wells, refer to form 68-0040, Wells and Fittings for Temperature Controllers. Order separately.

Length of Capillary:

Standard, each 66 in. (1676 mm).

Case Dimensions:

See Fig. 1.

Switch Action:

Each control opens on a temperature rise.

Control Point Setting:

Visible scale that can be set with an external screwdriver adjustment.

Finish:

Gray.

Mounting Means:

Three holes in back of case.

Wiring Knockouts:

Four, for 1/2 in. conduit.

Approvals:

Underwriters Laboratories Inc. Component Recognized:

File Number M466, Guide Number MBPR2.

American Gas Association Design Certified: Report 23-11B

(L4031A only).

Canadian Standards Association Certified: File Number

LR1620, Guide Number 400-E-O (L4031A only).

(millivoltage): 0.25A at 0.25 to 12 Vdc.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® Wholesaler or your distributor, refer to the Tr adeline

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

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Catalog or price sheets for complete ordering number, or specify—

1. Order number.

2. Compression fittings or immersion wells, if desired.

3. Optional specifications, if desired.

1. Your local Honeywell Residential Sales Office (check the white pages of your phone directory).

2. Residential Division Customer Relations Honeywell, 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service offices in all principal cities of the world.

L4031A,C POOL HEATER AQUASTAT® CONTROLLER

Optional Specifications:

L4031A:

—Pool control dial marked WARMER-COOLER. — High limit capillary exiting from top or bottom of case. — Pool control range: 53°F to 107°F (12°C to 42°C),

100°F to 240°F (38°C to 116°C).

—Factory-set pool control limits set at 115°F, 180°F, and

200°F (46°C, 82°C, and 93°C). —5°F (3°C) differential on pool control. — Adjustable differential on high limit control. —Factory high limit stops set at 140°F, 145°F, 180°F,

195°F, 200°F, and 210°F (60°C, 63°C, 82°C, 91°C,

93°C, and 99°C). — Capillary lengths available at 16-1/2 (high limit only),

18, 30 (pool control only), 33, 40, and 96 in. (419, 457,

762, 838, 1016, and 2438 mm). — Case marked “Tankstat.” — No openings in cover. — Less dial stops on pool control or both sides. — No opening over high limit dial. — With adjusting knob on pool control; less jumper.

L4031C:

— Factory high limit stop set at 250°F (121°C).

NOTE: Not all combinations of options are available. For

information, contact your Honeywell Sales Representative or TRADELINE

11/16

(17)

Dealer.

FRONT VIEWSIDE VIEW

3/8 (10) DIA.

When Installing this Product…

 Read these instructions carefully. Failure to follow them

could damage the product or cause a hazardous condition.

 Check the ratings given in the instructions and on the

product to make sure the product is suitable for your application.

 Installer must be a trained, experienced service

technician.

 After installation is complete, check out product

operation as provided in these instructions.

CAUTION

Disconnect power supply before beginning installation to prevent electrical shock or equipment damage.

The L4031 can be mounted either vertically or horizontally on a wall or panel, or directly on a tank. This device can be installed with the case and bulbs as far apart as the tubing permits. In all cases, the equipment manufacturer directions should be followed, if available. If not, follow the general instructions in the Location section.

Location

1. Locate the high limit bulb in the hot water outlet header of the heater. Locate the pool control bulb in the return water header of the heater.

2. Uncoil no more tubing than needed. Sharp or repeated bending of the tubing can cause damage.

3. If the tubing is subjected to vibration, protect it against wear when it comes in contact with another surface.

5-7/8 (149)

2-1/4 (57)

Fig. 1. Dimensions of L4031 in in. (mm).

INSTALLATION

WARNING

CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY OR DEATH.

This product is intended for use only in systems with a pressure relief valve.

4-1/2 (114)

3-3/8 (86)

4-1/8 (105)

M4537

Mounting

1. Remove the cover by loosening the cover screw on the lower front of the controller.

2. Fasten the case to a convenient wall or panel with screws through the three mounting holes in the back of the case.

3. Replace cover.

To Install Remote Bulb (Order Fittings or Wells Separately)

NOTE: Bulb must be bottomed in well for correct response.

Using Bulb Compression Fitting (Fig. 2)

1. Screw the fitting into boiler or pipe tapping.

2. Slide sealing washer onto bulb.

3. Insert bulb into boiler fitting until bulb bottoms.

4. Slide split sleeve into fitting.

5. Place clamps A and B on assembly so sleeve is drawn into fitting when screws are tightened.

NOTE: Make sure that nub on clamp A engages space

between sleeve and clamp.

6. Tighten clamp screws evenly.

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L4031A,C POOL HEATER AQUASTAT® CONTROLLER

CLAMP B

CLAMP A

SPLIT SLEEVE

CLAMP SCREWS (2)

BULB COMPRESSION FITTING

INSERTION LENGTH APPROX. 3-3/16 in. (81 mm)

SEALING WASHER

BULB

M8815

Fig. 2. 104486 Bulb compression fitting.

Using Capillary Compression Fitting (Fig. 3)

1. Screw fitting into boiler or pipe tapping.

2. Place packing nut on tubing.

3. Slide bulb completely through fitting.

4. Place composition disk and four slotted brass washers on tubing in the order shown in Fig. 3. Turn brass washers so that slots are 180 degrees apart.

5. Slide seal assembly into fitting and tighten packing nut.

IMMERSION BULB

BOILER PLUG

CAPILLARY TUBING

COMPOSITION DISK (SLOTTED)

JAWS

SPREAD JAWS TO FIT OVER RIDGE ON SPUD OF WELL

SCREWDRIVER

INSERT— MOUNTING CLAMP

DRAW NUT

TUBING

MOUNTING CLAMP

SPUD

BULB

WELL

M8777

Fig. 4. Immersion well fitting.

Wiring

All wiring must comply with local codes and ordinances.

In all installations, follow the equipment manufacturer instructions. If not available, use hookups in Figs. 5, and 6.

EXAMPLE OF SLOTTED WASHERS ASSEMBLED

PACKING NUT

IN PAIRS:

M8816

Fig. 3. 104484 Capillary compression fitting.

Using Immersion Well (Fig. 4)

1. Screw the well into the boiler or pipe tapping.

2. Insert the bulb into the well, pushing the tubing until the bulb bottoms in the well.

3. Attach the retainer clamp to the end of the well spud. Loosen the draw nut and spread the jaws of the clamp with a screwdriver if necessary. See Fig. 4.

4. With the retainer clamp attached to a well spud (be sure jaws of clamp hook over the ridge at the end of the spud, as shown at point A), adjust tubing to fit through retainer clamp groove, as shown at point B.

5. Tighten draw nut so retainer clamp is firmly attached to well spud and tubing is held securely in place.

CAUTION

Do not secure draw nut so tightly that retainer clamp could collapse tubing

L4031 POOL HEATER

POOL CONTROL

HEATING SWITCH

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN HIGH LIMIT AND POOL CONTROL ARE CONNECTED IN

SERIES, CURRENT DRAW OF CIRCUIT MUST NOT EXCEED ELECTRICAL RATING OF POOL CONTROL.

AQUASTAT® CONTROLLER

HIGH LIMIT

REVERSE-ACTING PRESSURE CONTOLLER

PUMP

PILOTSTAT

PUMP SWITCH

GAS VALVE

Fig. 5. Typical L4031 connection providing pool

temperature control and high limit protection.

L1 (HOT)

M4539

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