Raypak Hi Delta 992B-1262B Installation & Operating Instructions Manual

Also see for HI DELTA 1262B: Specification sheet Installation & operating instructions Specifications Installation & operating instructions Brochure & specs

48The stainless steel direct vent cap must be furnishedby the boiler manufacturer in accordance with its list-ing (sales order option D-15).Use only double-wall vent pipe and the special gasvent pipes listed for use with category II or IV gas burn-ing boilers, such as the stainless steel Saf-T vent byHeat Fab Inc. (800-772-0739), Protech Systems Inc.(800-766-3473), Z-Flex (800-654-5600) or AmericanMetal Products (800-423-4270). Pipe joints must bepositively sealed. Follow the vent manufacturer’sinstallation instructions carefully.Direct Vent - Horizontal Through-the-WallInstallationThese installations utilize the boiler-mounted blower todraw combustion air from outdoors and vent combus-tion products to the outdoors.The total length of the direct vent through-the-wallexhaust vent cannot exceed 40 ft in length for the flueoutlet. Each elbow used is equal to 10 ft of straightpipe. This will allow installation in one of the three fol-lowing combinations:• 40’ of straight flue pipe• 30’ of straight flue pipe and one elbow• 20’ of straight flue pipe and two elbowsThe total length air supply duct cannot exceed the dis-tances listed. Each elbow used is equal to 10 ft ofstraight pipe. This will allow installation in one of thethree following combinations:• 40’ of straight combustion air pipe• 30’ of straight combustion air pipe and one elbow• 20’ of straight combustion air pipe and two elbowsThe flue exhaust direct vent cap is not considered inthe overall length of the venting system.Care must be taken during assembly that all joints aresealed properly and are airtight.The vent must be installed to prevent the potential ac-cumulation of condensate in the vent pipes. It isrecommended that:1. The vent must be installed with a slight downwardslope of not more than 1/4 inch per foot of hori-zontal run to the vent terminal.2. The vent must be insulated through the length ofthe horizontal run.For installations in extremely cold climate, it is rec-ommended that:1. The vent must be installed with a slight upwardslope of not more than 1/4 inch per foot of hori-zontal run to the vent terminal. In this case, anapproved condensate trap must be installed perapplicable codes.2. The intake vent must be insulated through thelength of the horizontal run.Common Venting SystemCommon venting of Category IV systems is not al-lowed.The stainless steel flue exhaust direct vent cap mustbe furnished by the boiler manufacturer in accordancewith its listing (sales order option D-15).Use only double-wall vent pipe and the special gasvent pipes listed for use with category II or IV gas burn-ing boilers, such as the stainless steel Saf-T vent byHeat Fab Inc. (800-772-0739), Protech Systems Inc.(800-766-3473), Z-Flex (800-654-5600) or AmericanMetal Products (800-423-4270). Pipe joints must bepositively sealed. Follow the vent manufacturer’sinstallation instructions carefully.Fig. 43: Direct Vent - Horizontal Through-the-WallWARNING: No substitutions of flue pipe or ventcap material are allowed. Such substitutions wouldjeopardize the safety and health of inhabitants.