Conifer Solar Consulting supports the solar industry by designing and repairing active solar heating system controls and providing controls-associated consulting. Brands of controllers that I repair include Heliotrope, Independent Energy, Novan, Honeywell, Solar Controls Corp., Rho Sigma, Taco, Solaron, Johnson-Penn, Apollo (NDI), Webb, SDI, Dynatech, Richdel, Dencor, Western Solar Products, and upon occasion, other brands. Brands I don't repair are Robertshaw, HI Square/Hawthorne, Dan-Mar, and those controllers that use thermocouples for the temperature sensors. Typical turn around time is two days.
Several years ago I acquired the controller inventory from a Denver solar service company and a Denver metro area community college that had shut down its solar technology program. I've gone through these controllers and have repaired and checked them out and they are now ready to sell. They include:
Heliotrope
DTT-71, 1 available
DTT-80 (40/20 differential), 1 available
DTT-80 (12 VDC input)(new), 1 available
DTT-81, 1 available
DTT-82, 5 available
DTT-400, 1 available
DTT-403, 3 available (1 w/o cover)
DTT-3410, 1 available
SP-Lo set point controller, 1 available
The above controllers are priced at $37.50 each.
Heliotrope models
DTT-690, 5 available
DTT-691, 1 available
DTT-692, 1 available
DTT-790, 1 available
DTT-5080 (drain down), 1 available
DTT-80 converted to a DTT-5080, 1 available
are $42 each.
The remaining Heliotrope models are:
DTT-90T Temp-Trak $62.50, 5 available
DTT-792T $72.50, 1 available
Independent Energy - GoldLine:
C-35-1S(DHW)-2S(DHW) $83, 1 available
C-120-1S-3I(adj)-4B $129, 2 available
DM-30 monitor $72.50, 2 available
TD-CM monitor $65, requires a 10 pin in-line connector. If your CM-30 has a 14 pin dual line connector, you will need the ABC-14C/10 Adapter cable shown directly below.
ABC-14C/10 Adapter cable for non-series A SP or CM controllers to TD monitors or to ABC-10F/10M cables, 1 available - $6.00
ABC-14F/14F cable - joins non-series A SP or CM controlers to DM or DLX monitors. 5 ea. 10' length cables @ $10 ea., 1 ea. 25' length cable @ $18, and 1 ea. 50' length cable @ $22.50.
Webb Systemizer III (Continental Solar), $129 display box only, 6 available
Novan 2011 (10 K ohm sensor, 2 available) digital display, Dual Load Priority controllers, $104
Hawthorne/HI Square H-1503C Fixflo controller $37.50, 1 available
Hawthorne control test set/H-1600 $52, 1 available
Webb 990 controllers $26, 12 available
NDI/Apollo 44 $26, 2 available
SDI SEC III DHW board $75, with box $85, 1 available
Solaron HC 0215 control unit (new) $155, 1 available
Solaron HC1011 with accessories (new) $258, 1 available
Honeywell C773A sensors (new) $16, 5 available
Honeywell R7412A, $45, 1 available, R7412F, $47.50, 1 available
Solar Controls Corp. 80-171RA $32, 1 available
Solar Age Partner/HI Square 4020 $32, 2 available
Cyclops SW-120 controller with ST-310 control tester $52, 1 available
I also have new Heliodyne 10 K ohm sensors at $13.40 ea.
Prices shown do not include postage. Colorado sales will be charged the appropriate sales tax.
Yes, I accept credit card payments through PayPal, checks, and money orders. To place an order, send me an email stating what you are interested in along with your zip code. I'll check the postage to your zip code and send you a return email with the total cost.