Lochinvar ARMOR 151 - Manual (Page 48)

Installation & Operation Manual
48
8
Field wiring
ELECTRICAL SHOCK HAZARD – For
your safety, turn off electrical power supply
before making any electrical connections
to avoid possible electric shock hazard.
Failure to do so can cause severe personal
injury or death.
Wiring must be N.E.C. Class 1.
If original wiring as supplied with the
water heater must be replaced, use only
type 105°C wire or equivalent.
The water heater must be electrically
grounded as required by National
Electrical Code ANSI/NFPA 70 – latest
edition.
Installation must comply with:
1. National Electrical Code and any other national, state,
provincial, or local codes, or regulations.
2. In Canada, CSA C22.1 Canadian Electrical Code Part 1,
and any local codes.
Line voltage connections
1. Connect 120 VAC power wiring to the line voltage
terminal strip in the junction box, as shown in FIG. 8-1.
2. Provide and install a fused disconnect or service switch
(15 amp recommended) as required by the code (see
FIG. 8-1).
3. The DHW (water heater) pump is shipped loose on all
Armor models. Wire the water heater pump as shown in
FIG. 8-1.
4. The Armor water heater is capable of controlling a
building recirculation pump (field supplied). Wire the
building recirculation pump as shown in FIG. 8-1.
5. Dry contacts are sized for 1 hp/120V, 2 hp/240V or
15A/120V, 25A/240V.
DOMESTIC
HOT WATER
PUMP
120V SUPPLY
LINE GROUND NEUTRAL
W
G
BK
W G BK
SERVICE
SWITCH
L1 G L2/N
RECIRCULATION
PUMP
W
G
BK
G L4/N L3
Figure 8-1 Line Voltage Field Wiring Connections
Label all wires prior to disconnection
when servicing controls. Wiring errors can
cause improper and dangerous operation.
ƽ WARNING
NOTICE
ƽ CAUTION
Low voltage connections
1. Route all low voltage wires through the knockouts in the
rear of the water heater, as shown in FIG. 8-2.
2. Connect low voltage wiring to low voltage connection
board as shown in FIG. 8-3 on page 51 of this manual and
the water heater wiring diagram.
LOW VOLTAGE
CONNECTION BOARD
LOW VOLTAGE
WIRING KNOCKOUTS
LINE VOLTAGE WIRING KNOCKOUTS
Figure 8-2 Routing Field Wiring (Models 151 - 286)