Takagi T?K4?IN User Manual

Installation
20│Page
• 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meshfilter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 discharg e capacity must be at least 140,000 BTU/h for the T‐KJr2‐IN/OS, 190,000 BTU/h for
theT‐K4‐IN/OS,and199,000BTU/h
fortheT‐D2‐IN/OS.
• 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pla cedbetweenthereliefvalveandthewaterheater.
Pressure
ReliefValve
Hot
outle
t

Cold
inle
t

Gas
inle
t
AsCloseas
Possible
CAUTION

Takagi T?K4?IN Specifications

General

Brand	Takagi
Model	T?K4?IN
Category	Water Heater
Language	English