WEL FROSTWATCH User manual

FROSTWATCH
Temperature
Monitor unit
v3.20
USER MANUAL (All Models)

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - ii -
Contents
Section 1 Introduction to FrostWatch ............................................... 1
1.1 Choosing the right FrostWatch ....................................................... 1
1.2 Features ......................................................................................... 2
1.3 Accessory order codes .................................................................. 3
Section 2 Installation ........................................................................... 4
Section 3 FrostWatch basics ............................................................. 5
3.1 Operating ........................................................................................ 5
3.2 Power-up screen ............................................................................ 6
Section 4 Viewing settings and log ................................................... 7
Section 5 Main menu ........................................................................... 8
5.1 Frost alarm .................................................................................... 9
5.2 Sunburn alarm ............................................................................. 10
5.5 System log .................................................................................... 11
5.6 Device setup ................................................................................. 11
5.6.1 Set time/date ...................................................................... 11
5.6.2 Location name .................................................................... 12
5.6.3 Setup backlight ................................................................... 12
5.6.4 Setup buzzer ....................................................................... 12
5.7 Hardware setup ............................................................................ 13
5.7.1 Setup I/O ............................................................................ 13
5.7.2 Setup pump mode ............................................................... 14
5.7.3 View I/O status .................................................................... 14
5.7.4 Set fault output .................................................................... 14
5.8 Phone alarm .................................................................................. 15
5.8.1 Setup contacts .................................................................... 15
5.8.2 Ph call attempts ................................................................. 16
5.8.3 Repeat TXT messages ...................................................... 16
5.8.4 Signal strength .................................................................... 17
5.8.5 System ph number ............................................................... 17
5.8.6 TXT command password ..................................................... 17
Section 6 Calibration menu .............................................................. 18
6.1 Temperature inputs ........................................................................ 18
6.2 Calibrate low point ........................................................................ 18
6.3 Calibrate high point ........................................................................ 19
6.4 Restore defaults ............................................................................ 19
Section 7 Remote phone control ..................................................... 20
7.1 Call query ....................................................................................... 20
7.2 TXT commands ............................................................................ 20
Section 8 Error messages ................................................................. 21
Section 9 Topping up your prepay account ...................................... 22
Section 10 Explanation of calculations used ...................................... 23
10.3 Temperature rate of change .......................................................... 23
Section 11 Specifications & wiring ..................................................... 24
11.1 Wiring colour codes ...................................................................... 25
11.1.1 Temperature sensors ..................................................... 25
Section 12 Warranty & Terms and conditions of sale ........................ 26
FrostWatch Setup details
Warranty Card

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 1 -
1.0 Introduction to FrostWatch
FrostWatch environmental monitor unit has been designed with microcomputer
technology to allow the user the benefits of accuracy and reliability at an
affordable price.
When used in accordance with the manufacturer’s instructions, FrostWatch will
give years of trouble free service.
1.1 Choosing the right FrostWatch
FrostWatch is available in a number of different models, depending on your
requirements. A full feature list is given in section 1.2. This manual applies to
all models, so it is important to know which model you have, as this determines
which features your new FrostWatch has built in.
It is possible to upgrade your FrostWatch to a higher featured version by
returning it to the manufacturer. Please contact the manufacturer for details of
this upgrade service.
Power Supply:
FrostWatch is available as either a 12V DC unit, for operating off 12V batteries
(including 12V solar installations), or a Mains plug-pack model that will also
accept from 12 to 15 Vdc.
Cellular Models:
FrostWatch is also available with built in cellular communications. This allows
multiple users to be alerted on any phone or TXT under alarm conditions. TXT
queries to the unit determine current and historical temperature information, and
also the current settings of the device. With a password, it is also possible to
control the relay outputs via TXT message. The cellular model is provided as a
prepay unit, but can also be connected to monthly cellular plans.

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 2 -
1.2 Features
Features - All Models:
 2 Temperature Sensor inputs (supplied with one 15m sensor cable).
 FROST and SUNBURN control loops.
 User programmable alarm ON and OFF temperatures, with programmable on delay.
 2 configurable output relays.
 Pump prime and start feature, with monitoring via 1 digital input.
 Selectable fault output relay.
 MIN and MAX temperature logging.
 Temperature rate of change.
 Unit is dual point calibrated. A low and high point is provided to ensure accuracy throughout
the entire temperature range.
 User programmable site name field to assist with site recognition (via TXT in cellular models).
 User set-up controls are mounted internally to minimise inadvertent adjustment of settings.
 Info Key to allow settings and logged values to be displayed without opening the case.
 Backlit Liquid Crystal Display allows viewing in the dark.
 Recognition of various cable/sensor faults and display of appropriate message on the display.
 Audible Alarm.
 Low Power Consumption.
 Waterproof Case (IP 65).
 Friendly software ensures ease of operation.
Additional Features - Cellular Models:
 3 additional digital inputs that can generate TXT messages.
 2 Additional User-configurable output relays.
 Output relays controllable via TXT message (password protected).
 Up to five individually configurable phone contacts, with selectable TXT and/or CALL modes.
 Programmable call retries and repeat TXT during alarm conditions.
 TXT query. Send a request to the unit via TXT from any cell phone and receive via return TXT
detailed information of temperature, or current device status.

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 3 -
1.3 Accessory order codes
Please use the following codes for ordering accessories for your FrostWatch. Each
Model of FrostWatch is supplied with a single15m temperature sensor cable by
default. See below for ordering custom length sensor cables.
Order Code Description
10WSOL 10W Solar Panel (Suits 12VDC models only)
SOLKIT Solar Power Kit (Suits 12VDC models only). Includes 10W solar
panel, sealed lead-acid battery, mounting bracket to suit ‘10WSOL’
solar panel, and waterproof enclosure to fit battery and any 12VDC
model of FrostWatch.
TSENSE Additional Temperature Probe – Please Specify Length
TCABLE Custom Length Temperature Sensor. Use this code if you require a
temperature probe longer than 15m. Specify the total length of probe
required (in metres) and this will be supplied instead of the default
15m cable. If a second custom length probe is required, please
specify a second ‘TCABLE’ length separately.
UPGRD1 Upgrade any Non-Cellular FrostWatch into a Cellular model (for any
FrostWatch V3.00 onwards).
For further product information, please visit:
www.welnz.com

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 4 -
2.0 Installation
All Models:
1. Mount unit in an appropriate indoor location (eg in the shed). Mounting holes are
provided in the case where the lid screws secure the lid.
2. Remove the Main PCB to expose the output board beneath with connectors to
relay outputs and sensor inputs.
3. To operate a pump, use the normally open contacts of output 1 (O1).
4. To make use of the pump prime feature, use the normally open contacts of
output 2 (O2).
5. Connect Temperature sensor to terminal A1 and GND. Ensure that wiring polarity
is correct, as shown in section 11. If an additional temperature sensor is used,
connect to sensor terminal A2 and GND.
6. Connect the input power leads (battery or plug pack) provided to the Power In
terminals. Note that both AC and DC supplies can be connected either way
around.
All Models:
7. Ensure wiring is complete and correct before applying power.
8. Switch on Power and check that unit operates correctly.
Cellular Models only:
9. Check the internal phones signal strength to guarantee communications
See section 5.8.4.
10. Fill out the Phone details page so that the information in the FrostWatch matches
the sheet. Keep in a safe place.
All Models:
11. Proceed to the Calibration Menu ONLY if you have altered the temperature
sensor cable length.
12. Remove and complete the Warranty Card located at the back of this manual
and send back to us.
Warning: Do not use an insulation tester on ANY wiring connected to this equipment.
Such usage will cause damage to the sensor, main unit or both!

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 5 -
3.0 FrostWatch basics
3.1 Operating
After installation, and initial set up, the unit requires no further action from
the user.
In the event of any alarm occurring (frost, sunburn) the unit will operate an
internal buzzer (if enabled) as well as the output relay selected for that type of
alarm condition. If the prime feature is enabled the prime output (O2) will
operate for the programmed time before output 1 (O1).
Cellular Models operation under alarm conditions:
Cellular models will dial contacts according to the parameters set by the user.
In phone mode the unit will send an alarm tone to the receiving phone. If the
ph call attempts option is set to more than 1, that contact will be redialled if
the receiving party does not answer and terminate the call within the set
period. In TXT mode the unit will send the current temperature to the
receiving phone.
Repeat TXT messages allow the selected TXT capable contact(s) to be kept
up to date with current active alarm values. The time interval between these
TXT messages is user programmable.
Alarm Operation (All Models):
In Frost control mode, the alarm will operate when the temperature has
been equal to or below the alarm on point for the required on delay time.
The alarm will reset when the temperature rises above the alarm off point.
If the prewarn feature is enabled for a given contact (Cellular Models only)
the unit will send a TXT to that contact when the temperature drops below
the programmed temperature.
In Sunburn control mode, the alarm will operate when the temperature has
been equal to or above the alarm on point for the required on delay time.
The alarm will reset when the temperature falls below the alarm off point. If
the prewarn feature is enabled for a given contact (Cellular Models only)
the unit will send a TXT to that contact when the temperature rises above
the programmed temperature.
General Operation:
If a hardware/system error is detected (section 8), the audible alarm will
operate and the relevant error message will display on the screen. For
cellular models, any contact that has selected to receive system messages
will be notified by TXT message.
To silence the audible alarm, press the INFO key.
With no audible alarms activated, press the INFO key to view the unit
settings and log (section 4). The display messages will rotate at 3 second
intervals, although additional pressing of the INFO key will step through
each screen instantly.

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 6 -
A1 20.2 ºc A2 20.2 ºc Y
12:00
am
Frost
Line 1:
Line 2:
3.2 Power-up screen
Main screen
User programmable string:
- See section 5.6.2 under device setup.
Low Battery symbol:
- Symbol flashes when the battery is low and needs replacing. This
occurs only when running in battery backup mode. (ie: No power is
being supplied to the FrostWatch Unit).
Phone Signal Good Symbol:
- To Check Signal strength with greater resolution, see section 5.8.4
under device settings.
System Messages:
- Messages here inform the user of Temperature rate of
change, alarm status, system status and errors.
W E L F r o s t w a t c h
V3.10 S / N : 03000
Line 1:
Line 2:
User Programmable String
Unit Serial number
Software Revision
Current temperature at A1 sensor
Current temperature at A2 sensor
Low Battery Symbol
Phone Signal Good Symbol
System Messages
System Time

User manual
FROSTWATCH (All Models) – V3.20 Rev. September 2018 - 7 -
A1 20.2 ºc A2 20.2 ºc Y
12:00 Frost
4.0 Viewing settings and log
With the lid screwed on and no audible alarm active, Press the INFO key to display
system information. The following screens will rotate at 3 second intervals. To step
through the screens manually, press the INFO key to move to next screen.
Screen 1:
The backlight will switch on enabling viewing of the existing screen in the dark.
Screens 2-5:
Shows the Highest and Lowest recorded temperatures today, and
since the last time the log was cleared.
Screens 15-16:
Shows the Frost Alarm and Sunburn Alarm on point temperatures,
and which relays (if any) will operate under alarm conditions.
Screen 23:
Gives the user an opportunity to clear the min/ max logs.
Screen 24:
If INFO was pressed during screen 23 the following screen will
appear to confirm that the log has been cleared.
Screen 25:
Shows the power up screen details, as specified in section 3.2.
W E L F r o s t w a t c h
V3.10 S / N : 03000
MIN temp - TODAY
3.2 ºc 2:33pm
LOG
CLEARED!
FROST ALARM
1.0 ºc output1
Press INFO to
clear min / max

User manual
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5.0 Main menu
At the main screen press any key to enter the main menu.
Using the DOWN or UP key rotate through the main menu until the desired
option is displayed on line 2, then press the ENTER key.
MAIN MENU
Frost alarm
Line 1:
Line 2:
MENU LISTING:
1. Frost alarm
2. Sunburn alarm
5. System log
6. Device setup
7. Hardware setup
8. Phone alarm – Cellular models
9. exit menu