Hydro-Smart 115 - Water Connections; Pressure Relief Valve Requirements

Installation
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 Do not use this water heater if any part has been submersed under water.
Immediatelycallalicensedprofessionaltoinspectthewaterheatertoreplace
anydamagedparts.
 Donotreverse thehotoutletandcold inletconnections tothewaterheater.
Thiswillnotproperlyactivatethewaterheater.
WATERCONNECTIONS
Allpipes,pipefittings,valvesandothercomponents,includingsolderingmaterials,mustbesuitablefor
potablewatersystems.
1. Amanual shut offvalve must be installedon thecold water inlet tothe water heater between
themainwatersupplylineandthewaterheater.
2. In addition, a manual
 shut off valve is also
recommended on the hot water outlet of the
unit. If the water heater is installed within, or
subjected to, a closed loop water system, a
thermalexpansiontankmustbeinstalled.
3. Before installing the water heater, flush the
water line to remove all debris,
and after
installation is complete, purge the air fromthe
line.Failuretodosomaycausedamagetothe
heater.
4. There is a wire within the cold inlet to trap
debrisfromenteringyourheater.Thiswillneed
tobecleanedperiodicallytomaintainoptimum
flow.
‐Pressurereliefvalve‐
Thewaterheaterhasahigh‐temperatureshutoffswitchbuiltin as a standard safety feature(calleda
Hi‐Limitswitch)thereforea“pressureonly”reliefvalveisrequired.
 Thisunitdoesnotcomewithanapprovedpressurereliefvalve.
 Anapprovedpressurereliefvalvemustbeinstalled
onthehotwateroutlet.
 ThepressurereliefvalvemustconformtoANSIZ21.22orCAN1‐4.4andinstallationmustfollow
localcode.
 Thedischargecapacitymustbeatleast140,000BTU/h.
 Thepressurereliefvalveneedstoberatedforamaximumof150psi.
 Thedischargepipingforthepressurereliefvalvemustbedirectedsothatthehotwatercannot
splashonanyoneoronnearbyequipment.
 Attach the discharge tube tothe pressure relief valve and run the end of the tube to within 6"
from the floor. This discharge tube
 must allow free and complete drainage without any
restrictions.
 Ifthepressurereliefvalveinstalledonthewaterheaterdischargesperiodically,thismaybedue
toadefectivethermalexpansiontankordefectivepressurereliefvalve.
 Thepressurereliefvalvemustbemanuallyoperatedperiodicallytocheckfor
correctoperation.
 Novalvemustbeplacedbetweenthereliefvalveandthewaterheater.
Pressure
ReliefValve
Hot
outlet
Cold
inlet
Gas
inlet
AsCloseas
Possible
CAUTION