Control Box Overview; Field Wiring Shield; Thermostat Installation - Evcon EB12B Installation Manual

035-15266-003 Rev. A(0804)
SEQUENCERS C IRCUIT BREAKERS THERMOSTAT
WIRES
J
TRANSFORMER
L
LIMIT
SWITCHES
J
®
/
/
II ,L
@
®
® _ OI } O0
@
3500-378P* JUMPER
BARS (FOR SINGLE
J BRANCH CIRCUIT
SERVICE)
NOTE:
AS SHIPPED, THE JUMPER BAR
ASSEMBLY IS SET-UP FOR
BOTTOM ENTRY. FOR SiDE
ENTRY, THE TOP LUG CAN BE
REMOVED AND RE-POSITIONED,
AS SHOWN, TO PROVIDE
PROPER WIRE BENDtNG
CLEARANCES,
_GROUND
LUGS
FIGURE 13 : CONTROL BOX
_WARNING
For personal safety be sure to turn the electrical
power "OFF" at the household service box and at
the furnace circuit breakers before attempting any
service or maintenance operations. Homeowners
should never perform any maintenance which
requires opening electric box door.
Furnace is equipped with a protective shield over
field wiring connection. When field wiring is com-
pleted, shield must be replaced to prevent hazard of
electrical shock when using furnace disconnect.
(See Figure 14.)
BLOWER
CIRCUIT
BREAKERS
ELECTRIC
//PANEL
FIELD WIRING
J PROTECTIVE
SHIELD
THERMOSTAT INSTALLATION
The adjustable heat anticipator in the thermostat is pre-set at
0.4 Amps. This setting should be checked at the time of
installation
In some cases the thermostat may be a "self-setting" type in
which case no Amp. setting will be found on the thermostat,
eliminating the need for any field adjustment.
Thermostat should be located on an inside wall in an open
area to more closely regulate average room air, preferably,
where there is air movement back to furnace. Care should be
used to locate thermostat away from hot air discharge open-
ings, lights, etc. Locating height of thermostat is important.
Thermostat should be located 52 to 66 inches above the
floor. This is sometimes called the comfort zone.
If a condenser with its own Transformer shares a Heat/Cool
Thermostat with this furnace, use a thermostat with isolating
contacts to prevent interconnection of Class II 24 Volt Sys-
tems.
Cycle furnace to make sure it will operate correctly.
Maintenance and operating instructions are in the customer
envelope accompanying the furnace.
Give the customer envelope to the home owner.
FIGURE 14 : FIELD WIRING SHIELD
Unitary Products Group 9