Dontek H7 SVR Instructions
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H7 SVR – INSTRUCTIONS
CONTROLLER MOUNTING:
The controller enclosure must be firmly attached to a nearby solid fixture by either the two mounting lugs or direct
attachment though the controller. If mounting through the controller ensure the power cord is disconnected from the
mains supply then remove the enclosure front cover by turning the four corner locks so each arrow points to the 'O'
marked on the front cover. Insert two mounting screws diagonally through the oval holes in the enclosure, refit front
cover and turn the four corner locks to the 'I' position.
The power cable is 1.8m long and should be plugged directly into a general power outlet, not into an extension lead.
CIRCULATING PUMP:
The circulating pump plugs into the right hand 240Vac socket marked as PUMP and will be operating as indicated by
the PUMP ON LED. The left hand 240Vac socket marked as Auxiliary provides continuous power as indicated by the AUX
ON. LED. The maximum allowable combined current for both pumps is 10 AMPS @ 2400W.
HEATER INTERLOCK:
The heater interlock cable connects to the green socket marked RELAY1 which switches on the NO/C contacts when the
heater is to be turned on. The other end of the heater interlock cable connects in series (daisy chain) to the heater's
flow or pressure switch circuit (refer manufactures instructions). If the heater's flow/pressure switch circuit is 240Vac
then DO NOT connect the RELAY1 cable directly to the heater, a H7SV240 controller needs to be used which is
supplied with an external 240V rated relay which will need to be connected in series with the flow/pressure switch by a
licensed electrician. Set the temperature setting on the heater 5°C above the desired water temperature to allow the
H7 to be in control without conflict.
VALVE:
The valve actuator is connected to the green socket marked VALVE, wired as described on the label. The valve is used
for selecting or bypassing the solar collector.
TEMPERATURE SENSORS:
The pool sensor must be fitted into the suction line of the pump, preferably in a position out of direct sunlight. It is
recommended that a 14.5mm hole be drilled in the PVC pipe, this can be carried out using a Dontek PD01 grinding drill
or a small pilot hole can be drilled and a 14.0mm drill-bit used spinning in a counter clockwise direction to minimize the
chance of shattering pipe. Insert the grommet into the pipe and gently push in the black sensor barb. The green sensor
plug is to be fitted to the plug socket marked POOL.
This unit has been designed to eliminate the need to run a temperature sensor cable from the solar controller to the
roof, this is replaced by a Solar Powered roof temperature transmitter that only transmits when in direct sunlight, and a
receiver that calculates the roof and pool temperature turning on the solar pump when required.
As the unit operates in a UHF radio band, reflections and moving objects can cause a transmission to be corrupted with
a subsequent indication "ROOF SIGNAL NOT RECEIVED" on the display. Up to 10 transmissions can be missed (and last
valid reading is kept for 10 minutes) before pump action will occur and the solar pump will turn off. If this occurs, and
if the solar conditions are still favorable, the solar pump will not turn on again and resume normal operation unless it
has received a valid transmission.
The remote roof transceiver obtains its operating power from a solar panel, it will not operate if there is no sun or if
there is significant cloud cover. Obviously solar heating would not occur in such conditions.
Due to the possibility of reception ghosting and electrical interference the Transmitter may be required to be moved to
an alternative position, this may be as little as two meters and keep in mind that the roof sensor cable may be
extended 20 meters if required. The main controller should be mounted away from other electrical appliances as far as
possible to reduce the chance of interference. If the unit is to be installed in a metal shed there may be reception
issues and the controller may need to be optioned with a remote antenna or moved outside.
DESCRIPTION:
The H7 SV is a swimming pool controller that heats a swimming pool by the use of an auxiliary heater or if solar gain is
available an automatic valve will divert water to the solar collectors.
The auxiliary heater (gas or heat pump) has a temperature limit setting (aux limit), the pool will be heated to this limit
by the auxiliary heater.
The auxiliary heater run time is controlled by heat demand settings, which can be set to on/off and set to run between
start and end times, note that if the start & end time are set to the same values the auxiliary heater will run for 24
hours to achieve temperature limit.
If solar gain is available the solar system will heat the pool to the solar limit (sol limit).
Solar has a time lockout that prevents heating outside the hours of 08:00 to 19:00 and can be changed (see note 6).
An automatic divert valve will divert water to the solar collectors when there is enough solar gain and will revert back
to the auxiliary heater if required.
Heating is performed to the temperature limit plus ½°C and once that temperature is achieved heating will no re-occur
until the temperature drops below the desired limit by ½°C or until the sample period has elapsed and the temperature
is at or below the limit.
SETTINGS MENU
All items on the LCD that flash are adjustable items, use the Up or Down buttons to modify the adjustable item. Press
Enter to accept the adjustable value.
To enter the SETTINGS MENU push either the up or down buttons and the following will be displayed;
SETTINGS MENU
1) MANUAL MODE
All menu items are shown below, use the Up or Down buttons to scroll to different items in the menu;
SETTINGS MENU
1) MANUAL MODE
2) TEMPERATURE
3) HEAT DEMAND