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Symmons 7-500 - User Manual

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TempControl thermostatic mixing valve made from lead
free** metal components. Models 102-700 feature
serviceable integral check stops. Models 900 & 1000
feature removable check stops with union ells (see table 1
for ow rates).
Coordinating Model Numbers
Specification
Modifications (Components Certified Separately)
Warranty
5 Years - for commercial installations.
Refer to www.symmons.com/warranty for complete
warranty information.
Compliance
Note: Append appropriate sufx to model number.
TempControl 7 Series
Operation & Maintenance Manual
7-102, 7-200, 7-400,
7-500, 7-700, 7-900, 7-1000
-NI
-W
Rough nickel finish
Wall mounting bracket
-P
Polished chrome highlight finish
HTA-100
BV-( )
High temp audio/visual alarm system
Volume control shut off valves
T-425-( )
3” bimetal dial thermometer
SV-( )
WHA-1
Solenoid valve
Water hammer arrestor
TF-( )
Tee fittings
Note: Insert proper model number in parenthesis.
Table 1: Flow Rate - gpm (L/min)
Valve Model Min. Flow Rate*
Min. Flow Rate
(per ASSE 1017)
Pressure Differential - psi (kPa)
5 psi
(34 kPa)
10 psi
(69 kPa)
20 psi
(138 kPa)
25 psi
(172 kPa)
30 psi
(207 kPa)
45 psi
(310 kPa)
7-102
0.5 gpm
(1.9 L/min)
0.5 gpm
(1.9 L/min)
1 gpm
(4 L/min)
3 gpm
(11 L/min)
6 gpm
(23 L/min)
7 gpm
27 L/min)
8 gpm
(30 L/min)
11 gpm
(42 L/min)
7-200
0.5 gpm
(1.9 L/min)
5 gpm
(19 L/min)
7 gpm
(27 L/min)
12 gpm
(46 L/min)
18 gpm
(68 L/min)
21 gpm
(80 L/min)
23 gpm
(87 L/min)
27 gpm
(102 L/min)
7-400
0.5 gpm
(1.9 L/min)
9 gpm
(34 L/min)
18 gpm
(68 L/min)
27 gpm
(102 L/min)
37 gpm
(140 L/min)
41 gpm
(155 L/min)
44 gpm
(167 L/min)
53 gpm
(201 L/min)
7-500
0.5 gpm
(1.9 L/min)
13 gpm
(49 L/min)
22 gpm
(83 L/min)
38 gpm
(144 L/min)
50 gpm
(190 L/min)
55 gpm
(209 L/min)
59 gpm
(224 L/min)
70 gpm
(265 L/min)
7-700
0.5 gpm
(1.9 L/min)
13 gpm
(49 L/min)
25 gpm
(95 L/min)
43 gpm
(163 L/min)
57 gpm
(216 L/min)
62 gpm
(235 L/min)
66 gpm
(250 L/min)
77 gpm
(292 L/min)
7-900
0.5 gpm
(1.9 L/min)
13 gpm
(49 L/min)
30 gpm
(114 L/min)
55 gpm
(209 L/min)
76 gpm
(288 L/min)
84 gpm
(318 L/min)
89 gpm
(337 L/min)
104 gpm
(394 L/min)
7-1000
0.5 gpm
(1.9 L/min)
13 gpm
(49 L/min)
38 gpm
(144 L/min)
67 gpm
(254 L/min)
100 gpm
(379 L/min)
111 gpm
(421 L/min)
120 gpm
(455 L/min)
140 gpm
(531 L/min)
*Minimum ow rate when valve is installed at or near the hot water source with recirculated tempered water and continuously operating circulating pump.
**According to US Senate bill S.3874, the term “lead free” is dened as
follows: “not more than a weighted average of 0.25 percent lead when
used with respect to the wetted surfaces of pipes, pipe ttings, plumbing
ttings, and xtures”
Approach temperature:
5°F (2.8°C)
Temperature control range:
70°F - 150°F (21.1°C - 65.6°C)
-ASME A112.18.1/CSA B125.1, CSA B125.3
-ASSE 1017
-NSF/ANSI 61.9, NSF/ANSI 372
7-102 7-200, 7-400
7-500, 7-700
7-900, 7-1000

Table of Contents

Questions and Answers

  • N
    Nicole FarmerAug 7, 2025
    What to do if there is bypass in Symmons 7-500?
    • D
      Diane WagnerAug 7, 2025
      If the Symmons Control Unit experiences a cold to hot or hot to cold bypass, it's likely that the checks are not seating properly. Try cleaning any fouled checks. If they are damaged, replace the damaged parts.
  • L
    Lauren ChaseAug 12, 2025
    Why does the temperature drop when using Symmons 7-500 Control Unit?
    • N
      ncunninghamAug 12, 2025
      If the temperature of your Symmons Control Unit drops during draw (when sinks or showers are running), it might be because the valve was set in no draw mode. To fix this, run the showers and sinks, and then set the valve.
  • J
    Jennifer MorrowAug 17, 2025
    Why is the Symmons 7-500 Control Unit temperature too low?
    • H
      Holly FischerAug 17, 2025
      If the hot water temperature at your sink or shower is below the set point of the Symmons TempControl, it could be due to insufficient circulation of tempered water reaching the hot water source. To resolve this, consider re-piping the system according to diagram 2 or 3 (pg. 9), which allows the discharge of the pump (tempered water return) to go back to the hot water source and the cold inlet of the TempControl.
  • B
    barkerconnieAug 22, 2025
    Why is Symmons 7-500 overheating when not in use?
    • J
      Jessica KelleyAug 22, 2025
      If the thermometer in the Symmons TempControl outlet rises to the temperature of the heater when there's no draw (i.e., no sinks or showers running), it indicates that there is no circulation of tempered water because the return line is piped to the hot water source only. To fix this, re-pipe the system to diagram 2 or 3 (pg. 9), which allows the discharge of the pump (tempered water return) to go back to the hot water source and the cold inlet of the TempControl.
  • E
    Erika MaldonadoAug 27, 2025
    What to do if I cannot adjust the temperature on my Symmons Control Unit?
    • J
      Jamie PayneAug 27, 2025
      If you cannot elevate or decrease tempered water by turning the adjustment bolt on your Symmons Control Unit, the piston may be stuck with foreign matter. Remove the cartridge and soak it in household vinegar for an hour. If the piston does not free after soaking, replace the cartridge.
  • A
    ayalalauraSep 1, 2025
    Why does the temperature keep rising in Symmons 7-500 Control Unit?
    • B
      burkebrittanySep 1, 2025
      If the temperature of your Symmons Control Unit rises unexpectedly, it could be because it's not piped according to Diagrams 2 or 3, or the ball valve is too far open. Ensure a check valve is installed on the cold supply to the controller, or adjust the ball valve as shown in diagram 2 or 3 on page 9.

Summary

Coordinating Model Numbers

Specification

Temperature control range

Specifies the operational temperature range for the TempControl valve.

Approach temperature

Compliance

Parts Breakdown (7-102)

Parts Breakdown (7-200, 7-400, 7-500, 7-700)

Parts Breakdown (7-900, 7-1000)

Installation

Technical Assistance and Sizing

Installation Tips

Piping Diagrams

Operation & Adjustment

Operation and Adjustment for Diagram 2 Systems

Operation and Adjustment for Diagram 3 Systems

Operation and Adjustment for Diagram 4 Systems

Maintenance

Cartridge Cleaning and Replacement

Details on cleaning the cartridge and replacing it for continued service.

Check Valve Maintenance

Guidance on cleaning check valves to ensure proper operation.

Cartridge Removal & Replacement

Trouble Shooting Chart

For Tempered Water Recirculated Systems

Addresses common problems and solutions for recirculated systems.

For Tempered Water Non-Recirculated Systems

Provides solutions for issues in non-recirculated tempered water systems.

Symmons 7-500 Specifications

General IconGeneral
BrandSymmons
Model7-500
CategoryControl Unit
LanguageEnglish

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