Central Boiler e-Classic 1450 IR Owner's Manual page 20

Fig. 20
WATER-TO-AIR HEAT EXCHANGER
AND WATER HEATER SYSTEM
This horizontal assembly
must not exceed a height
of 4 inches (10 cm) above top
of water heater.
Water-to-Water
Heat Exchanger
Bypass Line
NOTE
A pump must be installed in the hot
supply line between the outdoor furnace
and thermostatic valve. Outdoor furnace
water temperature setpoint should be
set at 185˚F (85˚C) minimum.
Hot Supply from Pump
on Outdoor Furnace
Thermostatic Valve
Return to Outdoor Furnace
White
Neutral
White
Black
Ground, Hot and
Neutral Wires
110-V Line
at Furnace
Voltage
Transformer
Thermostat
p/n 588
24-Volt Thermostat
C is optional
with batteries
Y2 E/W1 R
(O/B)
EM
ST
SY AT
N F HE
FA OF
CO OL
LD TO
HO AU
RU N ON
PR GM
TI ME
L Y1 W2
For illustration purposes only.
18
NOTE: A certified electrician must
perform the electrical installation.
Thermostatic
Mixing Valve
For illustration purposes only,
water heater styles may vary.
White
Neutral
Black
Brown
Red
White
Black
Y
C
R
G
G
C
G
Heat
M
R Exchanger
C
H
Hot Supply
Optional Bypass
1"
Valve
Central
PEX
®
Existing
Water
Heater
Switch or
Snap Disc
on Furnace
Ground
Fan Relay
NOTE
R
This configuration allows
use of a 24-volt thermostat
on older forced-air units
with no control board.
NOTE
Installer must comply with all
applicable codes and regulations.
Fan
NOTE
On multi-speed fans, cap and
tape off any extra wires.
Fan Speed Tap Wires
(Connect Prefered Speed Tap Wire)
© 2015 Central Boiler
Section 1 - Outdoor Furnace Installation
Plenum
Existing
Forced Air
Furnace