STIEBEL ELTRON MEGABOOST User Manual Download

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OPERATION AND INSTALLATION

TANKLESS ELECTRIC BOOSTER FOR TANK WATER HEATERS

» MEGABOOST

Max. power, below set temp.

Modulating power

86°F - 105°F Hand Washing

105°F - 120°F Residential Use

120°F - 140°F Commercial Only

°

F

°

C

Tankless electric booster

for tank water heaters

Off

The MegaBoost is
tested and certiﬁ ed
by WQA against NSF/
ANSI 372 for lead free
compliance.

STIEBEL ELTRON, Inc.

17 West Street | West Hatﬁ eld, MA 01088

Tel. 413-247-3380 | Fax 413-247-3369

Email [email protected]

www.stiebel-eltron-usa.com

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Summary of Contents for MEGABOOST

Page 1: ...105 F 120 F Residential Use 120 F 140 F Commercial Only F C Tankless electric booster for tank water heaters Off The MegaBoost is tested and certiﬁed by WQA against NSF ANSI 372 for lead free compliance STIEBEL ELTRON Inc 17 West Street West Hatﬁeld MA 01088 Tel 413 247 3380 Fax 413 247 3369 Email info stiebel eltron usa com www stiebel eltron usa com ...

Page 2: ...7 10 2 Terminal block_______________________________________________________ 7 11 Commissioning _________________________________________________ 8 11 1 Appliance handover________________________________________________ 8 12 Troubleshooting ________________________________________________ 8 12 1 Display options LED diagnostic trafﬁc lights ________________ 8 12 2 Fault table_______________________...

Page 3: ...ice technicians DANGER Electrocution Before proceeding with any installation adjustment al teration or service of this appliance all circuit breakers and disconnect switches servicing the appliance must be turned off Failure to do so could result in serious personal injury or death DANGER Electrocution Never remove the appliance cover unless the electricity servicing the appliance is turned off Fa...

Page 4: ...he appliance will deliver any water temperature between 86 F 30 C and 140 F 60 C Please set the desired temperature using the knob on the front cover Note For reasons of appliance efﬁciency and durability scaling the optimum temperature setting lies between 86 F 30 C and 120 F 50 C In case the Power light is ﬂashing while the appliance operates the water ﬂow rate exceeds the heating capacity of th...

Page 5: ...eater CAUTION Electrocution Unit must be installed in a vertical position with the water ﬁttings pointing downward In this position the unit is splashproof so that no water can soak in 8 2 Choosing installation conﬁguration The Megaboost can either pre heat an electric tank water heater or be pre heated by one The chart shows the effect of installation on the tank cold water inlet versus on the ta...

Page 6: ...ated for maintenance purposes The tank water heater should have its own isolation valve in addition to the valve for the MegaBoost Cold water connection inlet is on the right side of the ap pliance hot water connection outlet is on the left side of appliance Tankless water heaters such as the MegaBoost are not required to be equipped with a Pressure and Temperature Relief Valve P T If the local in...

Page 7: ...ections Then feed wires through strain relief clamp and tighten clamp down on wire The live wires must be connected to the slots on the terminal block marked L and L The ground wire must be connected to slot marked with the ground symbol Strain relief clamp with screws and rubber seal are provided 10 1 Temperature setting anti scalding protection 26_02_02_1089 Connect the lead of the electronic te...

Page 8: ... at tention to the safety information Hand the operating and installation instructions to the user 12 Troubleshooting DANGER Electrocution To test the appliance it must be supplied with power 12 1 Display options LED diagnostic trafﬁc lights Display options red illuminates in case of faults yellow illuminates when the appliance is heating water green flashing The appliance is supplied with power 1...

Page 9: ... circuit breaker1 DP A 35 40 Min recommended wire size2 copper AWG 8 8 Min water flow to activate appliance GPM l min 0 26 1 Protection level according to IP 24 Max inlet water temperature F C 131 55 Nominal water volume GAL l 0 13 0 5 Working pressure max PSI bar MPa 150 10 1 Tested to pressure PSI bar MPa 300 20 2 Weight lbs kg 5 9 2 7 Water connections 1 2 NPT 1 This is our recommendation for o...

Page 10: ...ermal cut out 286369 3 Electronic control appliance 291851 4 Coding plug 283455 5 Back panel 292578 6 Flow sensor DFE 286461 7 Cold water connection 291699 8 Filter screen 252430 9 Hot water connection 278634 10 Plastic cover 11 Wiring block 279998 12 Axis connection plug 254312 13 Electronic temperature control 286359 14 Temperature adjustment knob 254307 15 Outlet temperature sensor 280677 ...

Page 11: ...as directed by Manufacturer and other than in accordance with applicable building codes 4 failure to maintain the Heater or to operate the Heater in accordance with the Manufacturer s speciﬁcations 5 operation of the Heater under ﬂuctuating water pressure or in the event the Heater is supplied with non potable water for any duration 6 improper installation and or improper materials used by any ins...

Page 12: ...s and technical changes Stand 8643 STIEBEL ELTRON Inc 17 West Street 01088 West Hatfield MA Tel 0413 247 3380 Fax 0413 247 3369 info stiebel eltron usa com www stiebel eltron usa com A 330773 40358 9271 4 AMHCMD CbJADD ...

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