
620515, 620525, 620526, 630515 & 630516 Installation Instructions
8
D. Wiring Requirements
1. 120 VAC Supply Line
Route a copper 12 AWG, with ground, 120 VAC
supplylinefromthetimedelayfuseorcircuitbreaker
boxtotheroof opening.
a. This supply line must be located in the front
portionofthe14-1/4"x14-1/4"(±1/8")opening.
b. ThepowerMUSTbeonaseparate20Amptime
delayfuseor HACR circuit breaker.
c. Make sure that at least 15" of supply wire
extendsintotheroofopening.Thisensuresand
easy connection at the junction box.
d. WiringmustcomplywithallNational,Stateand
LocalWiringCodes.
e. Useasteelsleeveandagrommetorequivalent
methodstoprotectthewirewhereitpassesinto
theopening.
2. Routeadedicated12VDCsupplyline(18-22AWG)
from the RV's converter(filtered terminals) or
batterytotheroof opening.
a. This supply line must be located in the front
portionofthe14-1/4"x14-1/4"(±1/8")opening.
b. Make sure that at least 15" of supply wire
extendsintotheroofopening.
c. Inamultiplezoneinstallation,thiswiringis
requiredinonlyoneofthe 14-1/4"x 14-1/4"
(±1/8")openings.
3. IfaRemoteTemperatureSensorisused,the con-
nectorendmustberoutedfromthesensorlocation
totheroofopeningofthesystemwhichitwillcontrol.
Make sure that at least 15" of the sensor cable
extendsintotheroofopening.RefertotheRemote
Sensor Instructions for details of the installation.
4. Ifafurnaceistobecontrolledbythesystem,thetwo
furnacethermostatleadsmustberoutedtotheroof
opening of the air conditioner that will control it.
Makesurethatatleast15"ofthefurnacethermostat
wiresextendintotheroofopening.
5. Ifan Energy ManagementSystem (load shedfea-
ture) is to be used with the control, two wires must
be routed to the roof opening of the zone to be
managed. The signal required for this function is
normally open relay contact. When the EMS calls
for the compressor to shut off, the relay contacts
should close. Make sure at least 15" of the EMS
wiresextendintotheroofopening.
6. Routea4-conductorcontrolcablefromtheComfort
Control Center™ mounting position into the
14-1/4" x 14-1/4" (±1/8") roof opening. Make sure
that at least 15" of the wire extends into the roof
openingand6"extendfromthewallatthemounting
position of the Comfort Control Center™. See
Section E-2.
7. IntheeventthatotherAirConditionersareinstalled
(additionalzones)anadditional4-conductorcontrol
cablemustberoutedtotheotherAirConditioners.
Makesurethatat least 15" ofthewireextendsinto
theroofopening.SeeFIG. 27.
8. If an automatic generator start kit (AGS) will be
installed, a 4-conductor control cable must be
routed from the last air conditioner to location of
AGSkit.FollowAGSkitinstructionsforinstallation.
E. DometicComfort ControlCenter™&Cable
Installation
1. Location
a. If the system is to be used WITHOUT a Re-
mote Temperature Sensor, the proper loca-
tion of the Comfort Control Center™ is very
importanttoensurethatitwillprovideacomfort-
able RV temperature. Observe the following
rules when selecting a location:
•LocatetheComfortControlCenter™54"
abovethefloor.
•InstalltheComfortControlCenter™ona
partition, not on an outside wall.
•NEVERexposeittodirectheatfromlamps,
sun or other heat producing items.
•Avoid locations close to doors that lead
outside,windowsoradjoiningoutsidewalls.
•Avoid locations close to supply registers
andthe airfrom them.
b. If the system is to be used WITH a Remote
TemperatureSensorinALLzones,theCom-
fort Control CenterTM may be mounted any-
where that is convenient in the coach. Try to
avoidhardtoreachandhardto see areas.
•Referto theinstructions provided withthe
Remote Temperature Sensor fordetails
ofinstallation.
c. A3/8"diameterholewillbeneededtoroutethe
cable through the wall. See Section D-3.
2. ControlCableInstallation
A4-conductorcontrolcablemustberoutedfromthe
roof openingto the Comfort Control CenterTM.
a. Choosetheshortest,mostdirectroutefromthe
14-1/4" x 14-1/4" (±1/8") opening to the Com-
fortControl CenterTMlocationselected.Leave
6" of cable extending through the wall. See
SectionD-6.
b. Thecontrol cable thatshould beused is aflat,
4-conductortelephonecable.
c. Thecontrolcablemustbeterminated withtwo
(2)RJ-11-6C4Ptelephoneconnectors.Referto
thecrimptoolmanufactureforcrimpinginstruc-
tions. See FIG. 8A, 8B and 8C.