DACHA CORPORATION 955 INDUSTRIAL 8T, NE « PINE CITY, MN 55083 TELEPHONE: 320-629-6737 / FAX: 320-828-3677 WEB SITE: www.dakacorp.com HOT TUBE™ DOMESTIC HOT WATER PREHEATED #223 INSTALLATION INSTRUCTIONS EFFECTIVE 9/26/11 CAUTION! These installation instructions are meant to be used as a snide for plumbers and DACHA furnace owners to follow. Failure to follow these instructions properly may result in a faulty installation which could cause damage to system and/or oneself.
Figure 1—Template Center punch & Drill Center punch & Drill CUT OUT TEMPLATE AND TAPE TO REAR OF FURNACE Figure 2— Firewall Installation Steel Washer \ Fiberglass Washer \ Rear Wall of Furnace S Firebrick 2 of 6 pages
Thermos-Siphon Method This is the simplest and most economical method, however, the hot water tank must be less than ten feet from the fum ace. The water infer coming from the HOT-TUBE where the temp/press relief valve is located, must be higher than the top leg of the HOT-TUBE. The hot water tank should be elevated, if necessary, to allow for proper therm-siphon action.
Tempering Tank Method This is a method used when the hot water tank is located more that ten feet away from the furnace. The tempering tank is installed in the same way that the hot water tank is set up in the therm-siphon method and serves as an additional holding tank for the remotely located hot water heater tank.
Circulating Pump Method This method is used when the hot water heater tank is located more than ten feet away from the furnace and a tempering tank is not available or practical. If the water heater is on a higher level than the furnace and a tempering tank is not used, the circulating pump method must also be used. In addition to a circulating pump, you will need an aqua stat to control the pump as the water i temperature varies.
£ Run copper tubing from the tee at the top leg of the HOT-TUBE and install an aqua stat, (6) wiring it to the circulating pump. Install a vent elbow (7) at the high point of the line and complete the line by running it to the tee at the top of the hot water tank. The system is now ready to be refilled, bled, and the hot water heater turned back on. . CAUTIONS NEVER use plastic tubing between the HOT-TUBE installation and the hot water heater.
