Resol DeltaSol BS User Manual

DeltaSol
®
BS
© RESOL 04272 deltasol_bs.mon.pmd
| 18
Pump starts for a short moment, switches-off, switches-
on again, etc. („controller hunting“)
Is the temperature
difference at the
controller too small?
no yes
Wrong placing of the
collector sensor?
yes
Change ∆Ton and ∆Toff
accordingly.
Mount the collector
sensor at solar feed flow
(warmest collector
output); use the
immersion sleeve of the
respective collector.
Pump starts up very late and soon stops working soon.
The temperature difference between store and collector
increases enormously during operation; the collector
circuit cannot dissipate the heat.
Collector circuit pump
defect ?
no yes
Heat exchanger
calcified?
yes
Control / replacement
Decalification
no
Heat exchanger
plugged?
yesno
Cleaning
Heat exchanger too
small?
yes
New calculation of the
dimension.
no
Plausibility control of the
option tube collector
special function?
Change ∆Ton and ∆Toff
accordingly.
Switch-on-temperature
difference ∆Ton too
large?
no yes
Collector sensor unfavour-
able placed (e.g. contact
sensor instead of immersion
sleeve sensor?
o.k.no
Pump is overheated, but no heat transfer from collector
to the store, feed flow and return flow are equally warm,
perhaps also bubble in the lines.
Exhaust the system;
increase system pressure
to at least static primary
pressure plus 0,5 bar; if
necessary continue to
increase, switch the
pump for a short time off
and on.
Air in the system ?
no yes
Is the collector circuit
plugged at the dirt trap?
yes
Clean the dirt trap
5.1Various:
If necessary activate tube
collector function.
yes
o.k.

Resol DeltaSol BS Specifications

General

Type	Solar Thermal Controller
Number of Inputs	4
Number of Outputs	2
Outputs	2 relay outputs
Enclosure Protection	IP20
Temperature Sensor Inputs	4 (Pt1000)
Mounting	Wall-mounted
Power Supply	220 … 240 V~