Panasonic 37406 Use & Care Manual page 5

Installation
Tc Elec:r_J DistdbutionPanel
T_mll_r_ture & Preseure Rgli_ Valve
Union
/
Hot Water
O uric1to Fixtures
Shut Off
!'Valve
Ba×
. HeatTrap
[Use only Copper 6' _4ir_.
ToOold
Water
JacketAccess Discharge Supply
Panels_ lane to suReb]e
Elra_rl Valve
/
AuxiJiar Z
_hPan
Figure 2. -- Typical Installation
r . waterfaucetslowlyte alloy,air to ventfromlhe waterheaterandplprng
A steadyflowof waterfromthe hot waterteueat(s) i _icates a full water
heater
IA.WA..,.G]
Tank BUST BE full of water before power Is turned on. Heating
element[s) W ILLBE DABAGED if energized for evena shortgme while
tank is dn/. The water heater'swarrantydoes not coverdamageor
failure resulgng from operation withan emptyor partially emptytank.
(Reference is made to the limitedwarrantyfor compieteterms and
conditions.)
5. ELECTRICAL CONNECTIONS - - A separatebranch circuitwdhcopper
conductors,overcurreatprotectivedevice and suitabledisconneciing
means must be providedby a qualified electrician All wiring must
conform to local codes or latest edition of National Electrical Code
ANS[_FPA70.
Thewater heater=s completely wiredto the iunctionbox inside j acketal
top front of water heater.An openingfor 1,2 or 3/4 electricalfittingis
provided forfieldwiringconnections (Referto Fig.3)
The vollage rebairemeats and wattage load for tee water heater is
specitted onthe raling plateon frontofheater¸
Table 1 recommends minimumbranchcircuitsizingbasedon National
r ' , r _ . ElectncCode Referto '_.lrlng diagramon backco\or of his manualfor
fieldwidng connections,
IA CAUTIONI
The ixesenoeof waterin thepipingandwaterbeaterdoesnot provide
sufficient conductionfor a ground. Non.metallic piping, dielectdc
unions,flexible connecters eta. can cause the water heater to be
electrically ise[ated.
Figure 3. -- Water Heater Junction Box.
Thebranchcircuit winngshouldinclude either
A, Metallic conduit ormetallic sheathed cable approvedfor use as a
grounding conductor a ndinstalled v¢_fitbagsapproved for t he purpose.
B. Non-metallic sheathedcable or metalliccondugo; metallicsheathed
cable not approved for use as a ground conductor shall include a
separateconductor for grounding, g shouldbe _tfechedto the ground
terminals of the waterheaterandthe elecgica[ d isicibalion box.(Referto
Fig 3)
Total RecommendegOver
Watel Curren_Plot_etiDN
Heate/ /Fu_e _rCirc_iL Breaker}
War!age Amperage Ra_lng
120 206 2_0
V V
1500' ZO 15 15
1700 20
2000 23 15 15
2500 30 15 15
3000 35 20 20
3500 -- 25 20
3800 -- 25 20
-- _5 25
_500 -- 30 25
5000 -- 30 30
5500 -- 35 30
6000 -- 40 35
g000 -- 60 5D
70 60
Copper Wire S_e-
AWG Based on N E_
Table 310-16 {6000 )
120 20B 240
V V
_2 _4 14
12
10 14 14
10 14 14
S 12 12
-- 10 12
-- 10 12
-- 10 10
-- 10 10
-- 10 1G
-- 8 10
-- 8 B
-- 6
4 6
6
• Less than 150C waits may be wired 14 gauge wHh 15 8rap protection
Chec Leone Erect i al Cod_ , as they/,ill al_o appl
Table 1.-- Branch Circuit Sizing Guide Based on
N.E.C. ANSt / NFPA 70