21
Installing Control Circuit Wiring
NOTE: Installation of a five-wire thermostat
circuit is recommended to provide for future
addition of a heat/cool thermostat.
1.
Install the 24V control-circuit cable through
plastic bushing at either side of furnace.
a.
For models without a relay box, connect
wires to furnace at blower plug pigtails (see
wiring diagrams). Secure all connections
with wire nuts.
b.
For units with a relay box installed, make
wiring connections at relay box low-volt-
age terminal board. (See relay box instal-
lation instructions.)
2.
Route control circuit wiring to wall
thermostat and outdoor section, if installed.
(See relay box installation instructions if
applicable.)
3.
Set anticipator per Table 8 or per the
marking on the unit.
4.
See Figure 31 (non-Platinum) and Figure
32 (Platinum) for E2EB thermostat con-
nections.
SYSTEM CHECKOUT
Checking Installation
1.
Refer to appropriate wiring diagram and
recheck all wiring connections. Ensure
that all connections are tight.
2.
Check blower motor and relay box
connectors for proper connection.
3.
Reinstall control box cover(s).
4.
Switch circuit breaker(s) to “ON” position.
5.
Set furnace blower selector switch (see
Figure 16) to “AUTO” (EH Units only).
6.
Replace outer furnace door.
7.
Check all duct connections and tape for air
leakage.
Table 7. Blower Performance
Standard E2EH Blower
with Filter, @ 0.3" ESP
Pin No.
Speed
CFM
#1
Low
840
#2
High
1160
4-Ton Blower with Coil and
Coil and Filters, @ 0.3" ESP
Pin No.
Speed
CFM
#1
Low
880
#2
Med.-Low
1170
#3
Med.-High
1310
#4
High
1460
5-Ton Blower, with Coil and
Coil Filters, @ 0.3" ESP
Pin No.
Speed
CFM
#1
Low
990
#2
Med.-Low
1320
#3
Med.-High
1620
#4
High
1790
Table 8. Anticipator Settings
Furnace
Thermostat
Model
Anticipator Setting
EH-10, 12, 15
0.30
EH-17, 20, 23, 15 HR
0.60
EB-10, 12, 15
0.50
EB-17, 20, 23, 15 HR
0.75
Table 9. Clearances
ALL MODELS
CLOSET
ALCOVE
Front ‡
6"
18"
Back
0"
0"
Sides
0"†
0"†
Top
0"
0"
Top and Sides of Duct
0"
0"
Bottom of Duct
0"
0"
‡ Service Clearance
† For upflow application using upflow stand,
1" minimum per side.
