131 Series Thermostatic Mixing Valves

131 Series Thermostatic Mixing Valves
Thermostatic Mixing Valve
Model Numbers: 31-ABNF, 131-CABNF, 131-FMAB, 131-CFMAB
Size: 3/8˝ (10 mm) Compression
Description
The 131 Series 3/8˝ (10 mm) compression fitting thermostatic mixing valves maintain and limit hot
water to a desired selectable temperature between 80°F and 120°F (27°C and 49°C), with flow rates
as low as 0.5 gpm (1.9 LPM). The superior flow characteristics of these valves provide accurate
temperature control (±3°F) with low pressure drop. As an added feature, the 131 Series incorporates
dual check valves to protect against cross-flow and integral screens to filter out debris.
Applications
A thermostatic mixing valve is intended for under-sink installation to control the hot water temperature
and prevent accidental scalding. The water temperature must be adjusted by the installer using a
thermometer to measure the hot water temperature at the faucet outlet. Maximum temperature of
110°F (43°C) is recommended.
Application Note
Delivery of water to fixtures intended for hand washing should always be controlled by valves listed
to ASSE 1070. Thermostatic valves provide the user with both thermal shock and scald protection.
These valves should always be adjusted after installation to the desired temperature.
Pressure – Temperature
Minimum Supply Pressure:
30 psi (207 kPa)
Hot Inlet Temperature:
120°F – 180°F (49°C – 82°C)
Cold Inlet Temperature:
40°F – 85°F (4°C – 29°C)
Minimum Inlet Temperature Differential:
20°F (7°C)
Temperature Out:
80°F – 120°F (27°C – 49°C)
Factory Setting:
100.4°F
Maximum Pressure:
125 psi (8.6 bar)
The pressure differential must be less than 20% between the hot and cold inlet supplies.
Figure 1. Flow Capacity: Pressure vs. GPM
140
120
PSI
100
80
60
40
20
0
0
1
2
3
4
5
6
7
GPM
Approval: CSA B125 Certified Listing: ASSE 1070 Certified
131-ABNF, 131-CABNF compliant to: CA AB1953, VT S.152,
and Reduction of Lead in Drinking Water Act S.3874
For additional technical assistance, call 800/TEC-TRUE (800-832-8783) or visit our website at chicagofaucets.com.
Installation Instructions
The 131 Series installs easily onto most faucets. When installing this thermostatic mixing valve, be
sure to follow all local plumbing codes for your application.
1. Shut off the supply valves and remove any existing piping between the supply valves and the
faucet.
2. Connect the 131 Series to the supply valves and the faucet. Typical connections are shown in
Figures 2 and 3 below.
3. Turn on the supply valves.
4. Follow the instructions on page 3 of this manual, Temperature Adjustment, to obtain the desired
outlet water temperature.
Note 1: When using copper tubing, do not extend the tubing more than 3/16˝ beyond the
compression ferrule. When installing with non-rigid supply hose connections, anchor the 131
Series thermostatic valve to the wall using the provided spacer to prevent any unintentional
movement.
Note 2: Do not use pipe dope/paste on valve thread connections.
Figure 2. Typical Installations, 131-NF and 131-ABNF
Single Sensor Faucet:
Multiple Sensor Faucets:
Mixed
Mixed
Hot Water
Hot Water
Cold Water
Cold Water
Figure 3. Typical Installations, 131-CNF and 131-CABNF
Single Two-Handle Faucet:
Multiple Two-Handle Faucets:
Mixed
Mixed
Hot Water
Cold Water
Hot Water
Cold Water
2
Temperature Adjustment – Models 131-ABNF, 131-CABNF
1. Loosen the cap screw until the handle turns freely (do not remove the screw) with a 3mm (7/64˝)
hex wrench.
2. As a safety feature the cap must be partially lifted from the valve to adjust temperature.
3. With the faucet turned on and in the full hot position, adjust the setting of the valve to obtain the
desired outlet water temperature. Turn clockwise to decrease temperature.
4. Lower cap and tighten cap screw.
5. Check outlet temperature.
Note 1: The hot water should be allowed to flow for two or three minutes prior to adjusting the valve
setting in order to have the hottest inlet temperature flowing through the valve.
Note 2: If Handle Locator becomes separated from Cartridge Stem, look for marking on Cartridge
Stem, align with groove on Handle Locator, and reassemble as shown in Detail A.
Temperature Adjustment – Models 131-FMAB, 131-CFMAB
1. Loosen the Set Screw (see Figure 5) until the Handle turns freely (do not remove the screw) with a
3mm (7/64˝) hex wrench.
2. With the faucet turned on and in the full hot position, turn the Handle to obtain the desired outlet
water temperature. Turn clockwise to decrease temperature.
3. Check outlet temperature.
4. When desired water temperature is achieved, tighten the Set Screw to secure the Handle.
Tightening the Set Screw provides tamper resistance and prevents unauthorized adjustment of the
water temperature.
Note 1: The hot water should be allowed to flow for two or three minutes prior to adjusting the valve
setting in order to have the hottest inlet temperature flowing through the valve.
Detail A
Handle
Locator
Cartridge
Stem
Figure 4. Temperature
Adjustment, Models
131-ABNF, 131-CABNF
Handle
Set Screw
(Temperature Indicator)
A. Factory Default Setting
B. Max. Cold Setting
Figure 5. Temperature Adjustment, Models 131-FMAB, 131-CFMAB
3
Pipe Flush Mode – Models 131-FMAB, 131-CFMAB
Safety
Lock Cap
131-FMAB and 131-CFMAB mixing valves include a special Pipe Flush Mode that allows
maintenance personnel to flush the system with high-temperature water.
IMPORTANT
Note that putting the 131 Series mixing valve in Pipe Flush Mode disables antiscald protection as required by ASSE1070. Pipe Flush Mode is for use by authorized
maintenance personnel only. Improper use of this mode may result in scalding or other
serious injury. Under no circumstances should the mixing valve be left in Pipe Flush
Mode after system flushing is complete.
1. Loosen the Set Screw (see Figure 5A) until the Handle turns freely (do not remove the screw) with a
3mm (7/64˝) hex wrench.
2. Remove the Safety Lock Cap and depress the Safety Button to disengage the safety lock as
shown in Figure 6.
3. Turn the Handle counter-clockwise to FLUSH position (Figure 6). Valve is now in Pipe Flush Mode.
4. Perform system flush as needed.
6. RETURN HANDLE TO SAFE TEMPERATURE SETTING: Turn the Handle clockwise to exit
Pipe Flush Mode. Safety Lock will re-engage. Continue rotating the Handle clockwise to desired
water temperature setting (see Figure 5 for standard settings).
7. Tighten the Set Screw to secure the Handle. Tightening the Set Screw provides tamper resistance
and prevents unauthorized adjustment of the water temperature.
8. Replace the Safety Lock Cap.
9. Check water temperature at the faucet outlet and adjust the Handle if necessary to achieve the
desired water temperature.
Safety
Button
Handle
ATTENTION INSTALLER: After installation, please leave this Instruction Sheet for occupant’s
information.
IMPORTANT: Inquire with governing authorities for local installation requirements.
Care and Maintenance
All Chicago Faucets fittings are designed and engineered to meet or exceed industry performance standards.
Care should be taken when cleaning this product. Do not use abrasive cleaners, chemicals or solvents as
they can result in surface damage. Use mild soap with warm water for cleaning and protecting the surface of
Chicago Faucets fittings.
Figure 6. Pipe Flush
Mode, Models
131-FMAB, 131-CFMAB
For additional technical assistance, call 800/TEC-TRUE (800-832-8783)
or visit our website at chicagofaucets.com.
CHICAGO FAUCETS LIMITED WARRANTY
TO WHOM DOES THIS WARRANTY APPLY? — The Company extends the following limited warranty to the original user only.
WHAT DOES THIS WARRANTY COVER AND HOW LONG DOES IT LAST? This warranty covers the following Commercial Products: SH-PB Shower Fittings.
LIFETIME FAUCET WARRANTY — The “Faucet,” defined as any metal cast, forged, stamped or formed portion of the Product, not including electronic or moving parts or other
products separately covered by this Limited Warranty or water restricting components or other components, is warranted against material manufacturing defects for the life of the
Product.
FIVE YEAR FAUCET WARRANTY — Certain Products and portions of the Product are warranted against material manufacturing defects for a period of five (5) years from the
date of Product purchase. Products warranted against material manufacturing defects for a period of five (5) years from the date of Product purchase are referred to by the product
numbers 42X, 43X, 15XX and E-Tronic™ - 4X, 5X, 6X, 7X, 8X and 9X. All zinc die cast portions of Product are warranted against material manufacturing defects for a period of five (5)
years from the date of Product purchase.
THREE YEAR ELECTRONICS WARRANTY — Electronic components, including the solenoid, are warranted for three (3) years
from the date of installation.
FIVE YEAR CARTRIDGE WARRANTY — The “Cartridge”, defined as the metal portion of any Product typically referred to
by the product numbers containing 1-099, 1-100, 1-310, 377X, 217X and 274X, excluding any rubber or plastic components,
is warranted against material manufacturing defects for a period of five (5) years from the date of Product purchase.
All Cartridges included in the Company’s Single Control or Shower Products also are warranted against material manufacturing
defects for a period of five (5) years from the date of Product purchase.
ONE YEAR FINISH WARRANTY – COMMERCIAL — For Products used in commercial applications, the finish of the
Product is warranted against material manufacturing defects for a period of one (1) year from the date of Product purchase.
OTHER WARRANTIES — All other Products not covered above are warranted against material manufacturing defects for a period
of one (1) year from the date of Product purchase.
Other restrictions and limitations apply. For complete warranty details, call Chicago Faucets Customer Service at
847-803-5000 or visit chicagofaucets.com.
© 2015 The Chicago Faucet Company. All rights reserved. Product specifications subject to change without notice.
The Chicago Faucet Company
2100 South Clearwater Drive
Des Plaines, IL 60018
Phone: 847/803-5000
Fax: 847/803-5454
Technical: 800/832-8783
www.chicagofaucets.com
865.497.00.0 REV 06/15
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