COTSWOLD DAIRY WATER HEATER User manual

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C1
Th
CH A MANUAL CH B
CLOCK
TIMER
DAY HOUR CLS/RCL MIN
CH A ON ON
AUTO AUTO
OFF OFF CH B
CH A CH B RESET
Dual Clock (S2) and
Digital Thermostat Versions
3-PHASE ELEMENTS
MUST BE WIRED IN
STAR FASHION
N
3 PHASE ELEMENTS
“All STAINLESS STEEL”
INSTRUCTIONS
Installation & Maintenance
DAIRY WATER HEATER
Cotswold Dairy Equipment Co Ltd
Avenue 3 Station Lane
Witney Oxford OX28 4BP
UK
Tel [phone]
Fax [phone]
e-mail [e-mail]
www.cotswold-dairy.co.uk
CE
MADE IN ENGLAND
COTSWOLD
ELEMENTS AND THERMOSTATS
WH9 3kw 1 phase 18” & stat pocket
WH9A 3kw 1 phase 14” & stat pocket
WH9B 3kw 1 phase 9” & stat pocket
WH9D 4kw 1 phase 14” & stat pocket
WH9F 3kw 1 phase 11” & stat pocket
WH10 4.8kw 1 phase 18” & stat pocket
WH10A 4.8kw 3 phase 18” & stat pocket
WH11 6kw 1 phase 18” & stat pocket
WH12 6kw 3 phase 18” & stat pocket
WH12A 9kw 3 phase 18” no stat pocket
WH13 Hi Range Stat 30° - 110/120°
SET CURRENT TIME
Press and Hold Down CLOCK button whilst setting hours
and minutes to input current time
SET HEATER ON/OFF TIMES
Press and release TIMER until C1 appears on right
and 1-ON comes up at left, set first element ON time by
pressing HOUR and MIN
Press Timer again, 1-OFF will appear at left
set first element OFF time by pressing HOUR and MIN
Press Timer again, 2-ON will appear at left
set second element OFF time by pressing HOUR and MIN
Press Timer again, 2-OFF will appear at left
set second element OFF time by pressing HOUR and MIN
(repeat above steps for third and fourth on/offs if needed
if not required, press TIMER repeatedly to step through
3on/off and 4on/off)
SET WATER SOLENOID to re-fill heater
Press and release TIMER until C2 appears on right
and 1-ON comes up at left,
set first Solenoid OPEN time by pressing HOUR and MIN
Press TIMER again, 1-OFF will appear at left
set first SOLENOID OFF (close) time by pressing HOUR and
MIN
(this will shut water solenoid - allow 2 - 3 hours to refill
heater)
Press TIMER again and 2-ON comes up at left, set second
SOLENOID OPEN time by pressing HOUR and MIN
Press Timer again, 2-OFF will appear at left,
set Second SOLENOID OFF (close) time by pressing HOUR
and MIN, (this will again shut water solenoid - allow 2 - 3
hours to refill heater)
(repeat above sequences to set thirdon/offs if required,(no
fourth setting) if not required, press TIMER to step through
3on/off and return to C1)
Finalise settings by pressing CLOCK
SET AUTO OPERATION
Press CH A until line at bottom of display is above AUTO,
repeat for CH B
if stepping from ON to AUTO, timing starts immediately,
if stepping from OFF to AUTO timing will start at NEXT
clock point
CLOCK CONNECTIONS
Channel A (Heater Element)
Series 1 (Up to Approx Aug’08): 7 & 6
Series 2 (After Approx Aug’08): 2 & 3
Channel B (Water Inlet Solenoid)
Series 1 (Up to Approx Aug’08): 10 & 9
Series 2 (After Approx Aug’08): 1 & 2
Illustration is of Series 2 Clock, fitted August 2008 on
(both types of clock have
same set-up, but different connections)
TO SET DIGITAL CLOCK (for every day use)
See clock’s own manual for other settings.
THIS IS A 24 HOUR CLOCK

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SPECIFICATION
WATER OUTLET: 1¼” BSP
OVERFLOW & STEAM: 1¼” BSP
WATER INLET: 15mm compression fit
ELEMENT: Incoloy stainless steel
!all stainless-steel construction including inner tank and outer cabinet
!high quality internal insulation for maximum economy, (including lid)
! connects direct to mains water supply
!square inner vessel for minimum size / maximum volume
!designed specifically for agricultural use.
!special sizes shapes and specifications to order
WATER HEATER
STEAM OUTLET
WATER INLET
OVERFLOW
WATER OUTLET
DRAIN
ELECTRICITY
SUPPLY
DIGITAL
CONTROLLER
HEATING ELEMENT,
DIGITAL SENSOR set
IMPORTANT INSTALLATION INFORMATION
MAINTAIN WATER PRESSURE AT THE INLET.
The cold water inlet is controlled by an electrically operated solenoid valve suitable
for water pressures between 10 and 150 psi (1 - 10 BAR). It is important that this
pressure is maintained EVEN WHEN OTHER TAPS OR APPLIANCES ARE OPERATING,
otherwise the solenoid may overheat.
CONTROL BOX
The controller can be mounted on a wall adjacent to the heater, or can be screwed
directly to the heater housing. Connect the mains electricity supply to the
connectors..
CLOCKs (see back page for setup instructions)
Where a single clock is fitted, it is used to control the timing of the heating element .
A dual clock allows you to also set the timing of the fill solenoid, to prevent ingress
of cold water while there is still hot water inside. This is particularly useful where
separate amounts of water are drawn off for morning and afternoon milkings.
POWER CUTS. If you have a power cut,
ALWAYS check and if necessary re-set the timing settings of the clock.
There are many other parameters that can be set on the controller, including switching over to
Fahrenheit degrees if preferred. A complete manual is also included with each controller
IMPORTANT INSTALLATION INFORMATION
DO NOT RESTRICT OR BLOCK THE OVERFLOW OR STEAM OUTLET.
They also allow air into the tank as the water is removed, and if they become
blocked the inner tank may implode.
In hard water areas, it is essential that a scale prevention device or water softener
be used and a water strainer fitted.
ADJUSTING THE DIGITAL THERMOSTAT
IMPORTANT - The digital sensor must be connected before setting the digital thermostat
The digital thermostat has been set to 83°-85°C at the factory, . In other words,
the unit will switch “on” at 83°C and switch “off” at 85°C.
To re-set the digi-stat (digital thermostat)
You can set the operating temperature
anywhere between 70°C and 97°C.
As delivered the unit is set to min 83 - max 85°C
To LOWER the target temperature, press and hold down the SET button, and
simultaneously press the LEFT ARROW (2) repeatedly to lower the setting in
single degrees.
To RAISE the target temperature, press and hold down the SET button, and
simultaneously press the RIGHT ARROW (3) repeatedly to raise the setting
in one-degree increments.
SERVICE NOTE
If the Display shows “OR”, it is indicating a problem with the external sensor,
probably that it is disconnected. Reconnect or exchange the sensor.
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