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OCF:
Antifreeze function
Adjustment: OFF / ON
Default setting: OFF
Recommended setting: OFF
This function is used to transfer heat from the storage tank
to the collector in order to avoid freezing of the heat transfer
medium is some system types.
This system uses a solution of propylene glycol and water
and is freeze resistant to -30 °F; therefore, this function is not
necessary.
CFR:
Antifreeze temperature
Adjustment range:
15 to 50 °F
Default setting: 40 °F
Recommended setting: 40 °F
Channel only available when
OCF is active
Channel only available when OCF is active
OREC:
Recooling function
Adjustment: OFF / ON
Default setting: OFF
Recommended setting: ON
The recooling function is used to cool the tank when the
maximum tank temperature (S MX) is exceeded, such as
when the collector cooling function (OCX) is activated and the
tank may reach 203 °F (emergency shut down of the tank).
When the collector is 5° cooler than the tank the pump will run
to dump excess heat from the tank in the piping and at the
solar collector until the tank is cooled to the maximum tank
temperature setting.
The tube collector function is only needed for systems that
use vacuum tube solar collectors.
This function is not necessary for this system.
OTC:
Tube collector function
Adjustment: OFF / ON
Default setting: OFF
Recommended setting: OFF
OHQM:
Heat quantity measurement
Adjustment: OFF / ON
Default setting: OFF
Recommended setting: OFF
A Heat quantity measurement is possible for this system in
conjunction with the fl ow meter. In order for this function
measure the heat gain of the system the optional temperature
sensor 4 (return fl ow sensor) must be added and connected
to the copper pipe between the coil outlet on the tank (marked
“to pump”) and the solar pump station.
FMAX:
Volume fl ow in gal/min
Adjustment range:
0.0 to 20.0 in steps of 0.1
Default setting: 6.0
Recommended setting: pump
station fl ow meter reading.
For OHQM to give an accurate reading the volume fl ow
readable at the fl owmeter (gal/min) must be adjusted in the
channel FMAX.
Channel only available when OHQM is active
MEDT:
Type of antifreeze
Adjustment range: 0 to 3
Default setting: 1
Recommended setting: 1
Channel only available when
OHQM is active.
For OHQM to give an accurate reading the type of heat
transfer fl uid type(antifreeze) must be set in the channel
MEDT:
0: water
1: propylene glycol
2: ethylene glycol
3: Tyfocor ® LS / G – LS
Caution: for this system type only type 1: propylene glycol
should be selected. Use of any other type of heat transfer
fl uid in this system may cause damage to the system or
present a health hazard