Bosch Appliances GWH 260 PN/HN2, GWH 425 PN/HN4GWH 4254 manual Table of Contents

2 Applications manual

Table of Contents

1 Introduction		3
2 Bosch Water Heating Models		3
2.1	Sizing tankless water heaters	4
2.2 Bosch GWH 715 ES		6
2.3 Bosch GWH C 800 ES		7
2.4	Outdoor Installation for GWH 715 ES and GWH C 800 ES	8
2.5 Bosch GWH 345 ESR		9
2.6 Bosch GWH 450 ESR		10
2.7 Bosch GWH 425 EF		11
2.8 Bosch GWH 425 HN		12
2.9 Bosch GWH 425 PN		13
2.10 Bosch GWH 260 PN		14
2.11 Powerstream Pro RP17PT, RP27PT		15
2.12 Powerstream Pro RP1P, RP2P, RP3P, RP7P, RP9P, RP12PT		16
2.13 Ariston Pro GL2.5Ti, GL4Ti, GL8Ti		17
3 Domestic Water Heating Applications		18
3.1	Point-of-use applications	18
3.2	Whole house applications	22
4 High Volume Potable Water Heating		26
4.1	Parallel unit applications	26
4.2	Cascade unit applications	28
4.3	External storage tank loading applications	29
5 Open Loop Space Heating		32
5.1	External storage tank	32
5.2	Indirect tank applications	42
6 Maintenance Drawings		44
6.1	Descaling procedure	44
6.1	Descaling procedure diagram	45

Application manual 11.2007 Bosch Water Heating