Symmons HTA-100 Service Manual

12V

6V

T

coil
connections

Relay 12 VDC @ <80mA
(customer supplied option)

Remote monitoring

system connections

Temperature probe and
1/4" NPT male tting

Water hammer

arrestor (optional)

Tee tting

(required, see

options)

Alarm
control
module

Water ow

Transformer
12 VAC/15 VA

Solenoid valve (optional)

12 VDC, 10 Watts max

120 VAC Power

25'probe cable
(optional lengths)

ON

OFF

Fuses #229

1.5A / 250VP

12 VAC

power input

12 VDC valve

power output

(optional)

Temperature

input probe

DIP Switches

Rear view of Alarm Control Module

12 VDC relay

power output

(optional)

TempControl

®

High Temperature Audio Visual Alarm System, HTA-100

Installation and Service Instructions

General Information

■ Alarm System - TempControl High Temperature Audio
Visual Alarm System will monitor, alert and alarm when
water temperature exceeds preset limit. It best ts
applications where there is a critical need to accurately
monitor and control warm or hot water temperature.

■ Solenoid Valve (optional) - When alarmed, the valve is
de-energized and closes to provide complete shutdown of
the water ow.

■ Relay (customer supplied option) - Installed relay enables
remote monitoring of alarm control module.

■ Caution Set Point - is the lower of the two set point
temperatures that alerts when the output water is
approaching an undesirable temperature limit.

■ Alarm Set Point - Once the output temperature reaches the

alarm set point, the system goes into full alarm mode.

Installation

Important: All piping should be thoroughly
ushed prior to installation to prevent debris from

interfering with the solenoid operation. Do not run
solenoid power and temperature probe through
same conduit.

■ Connect 120 VAC line voltage to the primary side of the
transformer as displayed in Figure 1.

Figure 1

■ Connect the 12 VAC secondary side of the transformer to
the 12 VAC power input terminals on the back of the alarm
control module as identied in Figure 2 below. Note that
there is no polarity required for the input terminals.

Piping

■ Tee Fitting - Required; appropriate size tting for
application purchased seperately (see options).

■ Temperature Probe - Locate probe as far downstream from
mixing valve as is reasonably possible.

a. Slide connector nut and ferrule piece over the probe.
b. Slide probe 1/2” to 2/3” into the tee tting.
c. Slide the ferrule and connector nut down the probe sha

and tighten in place.

■ Solenoid Valve (optional, 12 VDC, 10 Watts, normally
closed) - Install valve directly before the temperature probe in
any orientation. Make note of the correct direction of the water
ow as marked on the valve.

Electrical

■ Mount the 4" x 4" supplied mounting box in a dry location
within wiring reach of the temperature probe and solenoid
valve if used.

■ Mount supplied transformer.
(120 VAC – 12 VAC/15 VA UL listed, CSA certified class 2)

For California Residents
WARNING: is product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Figure 2

■ Temperature Probe - Plug probe into the connector on
the backside of the control module as identied in Figure2
above. Note that the connectors are keyed and will only mate
in one direction. (optional cable lengths are available)

■ Solenoid Valve (optional) -

Connect coil wires between the
solenoid valve and the valve power output terminals on the
back of the control module as identied in Figure 2 above.
Note that there is no polarity required between connections.

■ Relay (customer supplied option) -

Connect relay coil wires
between the relay and the valve power output terminals on
the back of the control module as identied in Figure 2. Note
that there is no polarity required between connections.

Fahrenheit / Celsius Temperature Display Setting

■ Select either Fahrenheit or Celsius
display units by setting Dip Switch
on control module circuit board.

Fahrenheit

DIP Switch 1 = OFF

Celsius

DIP Switch 1 = ON

Figure 3

Electrical Enclosure Box

■ Secure control module in electrical box using the two (2)
screws provided with box. Screws should be inserted into the
upper right and lower le corners of the control module.

■ Do not remove upper le and lower right screws securing the
control module together.

It may be necessary to move the opposite set point to
achieve the desired setting. Once the desired temperatures
are selected, return the key to the RUN position.

Alarm Lockout

e alarm control module can be locked to prevent changes to
the set points, even with the access key.

■ Once caution set point and alarm set point has been set,
remove the screws from upper right and lower le corners of
front plate. Remove the control module from the 4" x 4" box.

■ Enable set point lockout

Enable

- DIP Switch 2 = ON

Disable - DIP Switch 2 = OFF

■ Reinstall the control module into
the 4" x 4" box.

■ When the key is placed in the SET
position, the display will alternate
between a set point temperature
and the characters LOC.

■ Set point temperatures can be viewed but unable to change.

Figure 5

Temperature Set Point Adjustments

NOTE: The following settings were set at the factory:

Caution Alert Temperature = 114˚F (45.6˚C)
High Limit Alarm Temperature = 120˚F (48.9˚C)

■ Reset temperature

settings

factory temperature
settings as required by
the application to prevent
erratic temperature
readings that can
prematurely activate the
alarm.

■ SET key position - Turn
key from the RUN position
to the SET position.

■ Identify caution set

point temperature (A)

Press SELECT keypad
button until A appears in the rst eld of the LED display.
e three (3) digits immediately following the A identies the
current caution set point temperature.

■ Set caution set point temperature - Pressup down
keypad arrow buttons located below the display to increase
or decrease temperature setting.

■ Identify alarm set point temperature (H) - Press SELECT
keypad button until H appears in the rst eld of the LED
display. e three (3) digits immediately following the H
identies the current alarm set point temperature.

■ Set alarm set point temperature - Press up down
keypad arrow buttons located below the display to increase
or decrease temperature setting.

NOTE: Caution set point temperature cannot be set higher

than alarm set point temperature and alarm set point
cannot be set lower than caution set point temperature.

- Reset the above

Figure 4

Alarm Operation

Normal Mode:

■ Green Valve (normal) LED  LED is lit to indicate

normal operation; that water temperature is below set

point temperature

is installed, it is in the open position.

■ Flashing Red Dot  A ashing red dot (Heart Beat)
in the lower right corner of the display indicates that the
systems processor is running.

Caution Mode:

■ Amber Caution LED  LED will blink and the audible
signal will sound briey every 60 seconds when the
temperature reaches the caution set point indicating
attention should be paid to the system.

■ Green Valve (normal) LED  LED will remain lit
indicating normal operation.

Alarm Mode:

■ Red Alarm LED

Caution LED

reaches the alarm set point. A continuous pulsing audible
signal will also be heard.

■ Green Valve (normal) LED  LED will go out indicating
no water can ow. (If solenoid is installed, valve will close)

Signals mean immediate attention should be given to the system.

Alarm Hysteresis:

■ Amber Caution LED  LED will light if the temperature
decreases below the alarm set point indicating that the
temperature is lower than the alarm set point but still
greater than the caution set point.

Alarm condition/mode will still be in eect. e system

will only reset when the temperature decreases below the

caution set point.

and can ow. If optional solenoid valve

LED will blink and the Amber



 will go out if the output temperature

Page 2

BUILDING

T

PARALLEL

CONNECTION TO

SOLENOID VALVE

MONITORING

SYSTEM

CONNECTIONS

12V-DC RELAY

(relay coil current @ <80 mA)

(CUSTOMER SUPPLIED)

Alarm Control Module

HIGH TEMPERATURE ALARM - SYSTEM OPERATING CONDITIONS:

System OFF – no current to valve or relay – valve closed/relay open – no alarm

System ON/SET – current to valve and relay – valve open/relay closed – no alarm

System ON/TRIPPED – no current to valve or relay – valve closed/relay open – alarm

(total current @ <833 mA )

Page 3

(valve current @ <750 mA)

NOTES:

3-The above system design only provides for a “binary or on/off” signal to the building monitoring system

1-All current values are maximums not to exceed

2-The above system design does not transmit “analog or digital” data to the building monitoring system

4-Building monitoring system connections and/or signals are defined per the customer application

Override Key

Alarm Set Point - once alarm set point temperature has been

reached, only personnel with the override key can initiate water
flowing in the system.

■ Override Position - Insert the key into the control module
front panel and turn the key switch to the override position.
e solenoid valve is held open allowing water to ow.

All users should be clear of the water ow due to
excessive temperature owing until the system is
corrected.

■ SILENCE Keypad Button - e audible signal may be
silenced by depressing the SILENCE keypad button located
on the panel. e audible signal will only be silenced for 60
seconds and will resume at the completion of the cycle.

■ Key Removal - e key cannot be removed in the override

position

preventing the solenoid from being held open and

le unattended.

■ Alarm Hysteresis - As the system output temperature is
corrected, the above Alarm Hysteresis conditions will occur.

■ Green Valve (normal) LED  LED will blink and an
audible signal will be heard regardless of the current mode
when the key switch is in the override position and the
silence period has expired.

TROUBLE SHOOTING CHART

HTA-100 Alarm System Kit - includes the following:

■ Programmable alarm control module with two system
operation keys and stainless steel front panel

■ Electrical mounting enclosure box; 4" x 4"

■ Transformer; 120 VAC, 12 VAC/15 VA, UL listed/

CSA certified class 2

■ Solid state temperature probe with 25' cable and 1/4"
male compression fitting for attaching probe

Options

Solenoid Valves 12 VDC/10 Watts max (normally closed)

■ SV-102 .....................1/2" NPT

■ SV-200 .....................3/4" NPT

■ SV-400 .....................1" NPT

■ SV-500 .....................1-1/4" NPT

■ SV-700/900 .............1-1/2" NPT

■ SV-1000 ...................2" NPT

Water Hammer Arrestor

■ WHA-1 .....................1" NPT water hammer arrestor

Tee Fittings

■ TF-102 .....................1/2" x 1/2" x 1/4" NPT

■ TF-200 .....................3/4" x 3/4" x 1/4" NPT

■ TF-400 .....................1" x 1" x 1/4" NPT

■ TF-500 .....................1-1/4" x 1-1/4" x 1/4" NPT

■ TF-700/900..............1-1/2" x 1-1/2" x 1/4" NPT

■ TF-1000 ...................2" x 2" x 1/4" NPT

Temperature Probe Cables - additional lengths

■ TPC-50 ....................50' probe cable

■ TPC-100 ..................100' probe cable

Relay (customer supplied option)

Problem Cause

Front Panel Display: ERR1

Front Panel Display: ERR2

Front Panel Display: ERR3

Front Panel Display: ERR4

Front Panel Display: ERR5

Front Panel Display: CAL

Front Panel Display: PRB1

Front Panel Display ashes: LOC

Memory problem with circuit board

“Up arrow” button shorted or stuck on power up

“Down arrow” button shorted or stuck on
power up

Key switch in “set” position on power up

Key switch in “override” position on power up

Calibration error

Power up without probe attached or with
probe wire broken

Set point lockout enabled

Solution (Follow service instructions)

Contact factory technical service

Ensure button is not depressed; if this does
not correct problem contact factory technical
assistance

Ensure button is not depressed; if this does
not correct problem contact factory technical
assistance

Turn key to run position; if this does not
correct problem contact factory technical
assistance

Turn key to run position; if this does not
correct problem contact factory technical
assistance

Contact factory technical service

Reconnect probe; if this does not correct
problem contact factory technical assistance

Set DIP switch 2 to the off position

Set point cannot be adjusted

No power, no display or

One or both fuses are blown

erratic behavior

Symmons Industries, Inc. ■ 31 Brooks Drive ■ Braintree, MA 02184 ■ Phone: [phone]

Co pyri ght © 2016 Symmons Industries, Inc. ■ www.symmons.com ■ [e-mail] ■ ZV-3004 REV A ■ 012116

Check and replace 1.5A fuses located
on circuit board

■

Fax: [phone]