L4031A,C
Pool Heater Aquastat® Controller
PRODUCT DATA
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.
GENERAL
The L4031A,C Pool Heater Aquastat® units are designed to control pool water temperatures and provide high limit boiler control.
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Contents |
General ............................................................................... |
1 |
Features .............................................................................. |
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Specifications ...................................................................... |
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Ordering Information ........................................................... |
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Installation ........................................................................... |
3 |
Setting and Checkout .......................................................... |
5 |
Material Safety Data Sheets ............................................... |
6 |
Copyright © 1995 Honeywell Inc. • All Rights Reserved |
60-2107-5 |
L4031A,C POOL HEATER AQUASTAT® CONTROLLER
SPECIFICATIONS
IMPORTANT
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.
Models:
L4031A Pool Heater Aquastat® Controller controls pool water temperature and provides automatic reset high limit boiler control.
L4031C Pool Heater Aquastat® Controller controls pool water temperature and provides manual reset high limit boiler control.
High Limit
Range:
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).
Differential:
L4031A: Fixed 5°F (3°C).
L4031C: Manual reset.
Electrical Rating (A):
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120 Vac |
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240 Vac |
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Full Load |
8.0 |
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5.1 |
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Locked Rotor |
48.0 |
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30.6 |
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Powerpile® (millivoltage) is 0.25A at 0.25 to 12 |
Vdc. |
Pool Control
Range:
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).
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® (millivoltage): 0.25A at 0.25 to 12 Vdc.
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).
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® Wholesaler or your distributor, refer to the Tradeline® 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.
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:
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.
60-2107—5 |
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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® Dealer.
SIDE VIEW
5-7/8
(149)
2-1/4 (57)
FRONT VIEW 3/8 (10) DIA.
11/16 |
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(17) |
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4-1/2 |
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(114) |
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3-3/8 |
(86) |
4-1/8 |
(105) |
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M4537 |
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.
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.
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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60-2107—5 |
L4031A,C POOL HEATER AQUASTAT® CONTROLLER
CLAMP B
CLAMP SCREWS (2)
CLAMP A
BULB BULB
COMPRESSION
FITTING
SEALING
WASHER
INSERTION LENGTH
APPROX. 3-3/16 in. (81 mm)
SPLIT SLEEVE
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)
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EXAMPLE OF SLOTTED WASHERS |
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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
JAWS
SPREAD JAWS
TO FIT OVER
RIDGE ON SPUD
OF WELL
SCREWDRIVER
INSERT— MOUNTING CLAMP
DRAW |
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NUT |
MOUNTING |
SPUD |
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B |
CLAMP |
WELL |
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BULB |
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TUBING |
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M8777 |
A
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.
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L4031 POOL HEATER |
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POOL |
HIGH |
AQUASTAT® CONTROLLER |
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CONTROL |
LIMIT |
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REVERSE-ACTING |
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PRESSURE |
GAS VALVE |
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CONTOLLER PILOTSTAT |
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2 |
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PUMP
HEATING
SWITCH PUMP
SWITCH 1
L1
(HOT)
L2
1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2WHEN HIGH LIMIT AND POOL CONTROL ARE CONNECTED IN SERIES, CURRENT DRAW OF CIRCUIT MUST NOT EXCEED
ELECTRICAL RATING OF POOL CONTROL. |
M4539 |
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Fig. 5. Typical L4031 connection providing pool temperature control and high limit protection.
60-2107—5 |
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