Drawings by Rollin Francisco, Ecotope Group Additional copies of this 4-page section on solar hot water construction and solar resource people will be available from RAIN and from Ecotope Group (Box 618, Snohomish, WA 98290), after January 15, 1976. Send $1 and a stamped, self-addressed business-size envelope. APPLY MASTIC: Apply thermal transfer mastic and paint. BOLT ASSEMBLY IN BOX: Bolt assembled absorber platepipe/manifold configuration into box with fender washers top and bottom. DRILL PIPE HOLES: Oriti holes for cold water inlet and hot water outlet nipples, insert nipples, insert manifold end plugs. Caulk to seal around inlet and outlet nipples between wood and pipe. FRAME GLAZING: Build frame for glazing material, staple vinyl to frame, running greenhouse tape between stapler and vinyl sheet. Apply weather-stripping. Lay glazed frame onto 2x4 box, drill holes and screw frame to box. ATTACH THERMOMETERS: Attach thermometers. CONNECT STORAGE: Connect collector to hot water heater storage storage for natural (gravity circulation) thermosiphon effect. Use gates valves at inlet and outlet. Wrap insulation around pipes and fasten with duct tape.at ends and as needed in between. CROSS SE.C.T\ON 1-1/2 gallons "Thermon," from Set-Point Control, Seattle and Portland. Must be done in a dry place. 1 pint flat black barbecue paint. 4-1/4"x3-1/2" bolts with nuts and 8 fender washers. 2-3/4"x6" nipples, 2-3/4" pipe plugs. 1-25' roll 4' wide Sears vinyl, 1 box 3/8" staples, 30' adhesive felt weatherstripping, 30' greenhouse tape, 30' 1"x2" wood molding, 24-#l0x3" wood screws and washers (galvanized). 2 dial face thermometers with 2" stems and 1/2" NPT (National Pipe Thread). 1 ro 2" wide duct tape, 20' 3/4" pipe insulation, one 30-gal., used, non-leaking hot water heater (buy salvaged from local plumber, working element not needed, gas models also OK). Two 3/4" pipe unions, 20' 3/4" galvanized iron pipe, 43/4" 45° elbows, 4-3/4" Tees (3/4"x3/4"x3/4"), 8-3/4" 90° elbows, 2- 3/4" compact bronze gate valves, 1 dial thermometer with 7" stem (minimum length, longer is OK). 1 large and 1 small putty knife, 2" paint brush. 1/4" metal drill bits (use hand drill again). 1 brace, 1-1-1/8" wood bit, wrenches, dope, caulk. 1 building stapler, 1 screwdriver, 1 hand drill with 3/16" bit and 1/32" bit (reuse wood glue). Crescent wrench, dope. Wrenches, dope, threading vise. Dec 1975 RAIN Page 13
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