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Technical Data Manual
Model Nos. and pricing: see Price List
VITOCELL 300-H
EHA Series
Indirect-fired domestic hot water storage tank
42 to 119 USG (160 to 450 L)
Product may not be exactly as shown
Vitocell 300-H
EHA Series
Horizontal indirect-fired domestic hot water storage
tank made of high-grade stainless steel
5696 674 - 03 02/2018
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Summary of Contents for Viessmann EHA Series
- Page 1 Technical Data Manual Model Nos. and pricing: see Price List VITOCELL 300-H EHA Series Indirect-fired domestic hot water storage tank 42 to 119 USG (160 to 450 L) Product may not be exactly as shown Vitocell 300-H EHA Series Horizontal indirect-fired domestic hot water storage...
- Page 2 Product Information Vitocell 300-H, EHA Series Technical Data Benefits Fully hygienic, efficient and economical domestic hot water production with DHW tanks of high-grade stainless steel – horizontal version. Benefits at a glance: H Corrosion-resistant tank of high-grade SA 240-316 Ti stainless steel offers a long service life.
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Page 3: Cross Section
Product Information Vitocell 300-H, EHA Series Technical Data Cross Section 2¼” (57 mm) thick Tank is constructed of foamed-in-place high-grade SA 240-316 HCFC-free insulation Ti stainless steel Non-finned, stainless steel, Inspection port/ tubular heat exchanger coil clean-out opening extends to tank bottom – the... -
Page 4: Technical Data
Technical Data Vitocell 300-H, EHA Series Technical Data Technical Data For domestic hot water heating applications which Suitable for heating systems with: utilize hot water heating boilers H max. working pressure on heat exchanger side up to 220 psig at 392°F (200°C) H Only for 92 and 119 USG (350 and 450 L) saturated steam 15 psig at 250°F (121°C) - Page 5 Technical Data Vitocell 300-H, EHA Series Technical Data 42 and 53 USG (160 and 200 L) Dimensions Legend Aquastat Well Storage capacity USG (L) 42 (160) 53 (200) BWR Boiler Water Return in. (mm) 34 (866) 40b (1030) BWS Boiler Water Supply...
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Page 6: Pressure Drop
Technical Data Vitocell 300-H, EHA Series Technical Data Pressure Drop Pressure drop on heating water side (primary circuit) Legend A 42 USG (160 L) storage capacity B 53 USG (200 L) storage capacity C 92 USG (350 L) storage capacity... - Page 7 Product Installation Vitocell 300-H, EHA Series Technical Data Multiple Tank Installation Three possible combinations are shown below as examples. Note the maximum number of tank units which may be stacked upon one another. Total capacity of tank battery USG (L)
- Page 8 Product Installation Vitocell 300-H, EHA Series Technical Data Multiple Tank Installation (continued) Quick recovery (over 10-minute period) Domestic hot water draw rate Domestic hot water rise from 50 to 113°F (10 to 45°C) Storage tank content heated to 140°F (60°C),...
- Page 9 Product Installation Vitocell 300-H, EHA Series Technical Data Connections Domestic hot water connections 42 and 53 USG (160 and 200 L) capacity IMPORTANT When connecting an externally powered anode to the top flange lid, separate the magnesium anode in the bottom flange lid from the grounding cable.
- Page 10 Heating water supply temperatures over 230°F (110°C) For these operating conditions, an approved high limit are utilized, Viessmann reserves the right to withdraw all expressed or implied warranties without written notice. safety aquastat must be installed to limit the domestic hot water temperature to 203°F (95°C) in the tank.
- Page 11 Sizing Vitocell 300-H, EHA Series Technical Data Continuous Flow Capacity Chart 42 USG (160 L) capacity Curve A Domestic hot water 40 to 140°F (4 to 60°C) Curve B Domestic hot water 40 to 176°F (4 to 80°C)
- Page 12 Technical Data Vitocell 300-H, EHA Series Technical Data Continuous Flow Capacity Chart (continued) 53 USG (200 L) capacity Curve A Domestic hot water 40 to 140°F (4 to 60°C) Curve B Domestic hot water 40 to 176°F (4 to 80°C)
- Page 13 Technical Data Vitocell 300-H, EHA Series Technical Data Continuous Flow Capacity Chart (continued) 92 USG (350 L) capacity Curve A Domestic hot water 40 to 140°F (4 to 60°C) Curve B Domestic hot water 40 to 176°F (4 to 80°C)
- Page 14 Technical Data Vitocell 300-H, EHA Series Technical Data Continuous Flow Capacity Chart (continued) 119 USG (450 L) capacity Curve A Domestic hot water 40 to 140°F (4 to 60°C) Curve B Domestic hot water 40 to 176°F (4 to 80°C)
- Page 15 Technical Data Vitocell 300-H, EHA Series Technical Data Continuous Flow Capacity Chart (continued) Example: Vitocell 300-H, 119 USG (450 L) capacity To summarize: Assume boiler output to tank is 238 MBH. Enter chart For a Vitocell-H 300 with 119 USG (450 L) capacity at left and draw horizontal line across to recovery rate of 284 GPH or 4.7 GPM for 140°F (60°C) domestic...
- Page 16 Technical Data Vitocell 300-H, EHA Series Technical Data Steam Chart Continuous flow of domestic hot water at a temperature of 140°F (60°C) at 100°F (56°C) rise with a steam velocity of 164 ft./sec (50 m/sec) using saturated steam.
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