Field Wiring; Line Voltage Connections; Low Voltage Connections - Lochinvar 151 - 801 Operation Manual

5

Field wiring

ELECTRICAL SHOCK HAZARD – For
WARNING
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.
NOTICE
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.
All wiring exterior to the appliance must
be enclosed in approved conduit.
Label all wires prior to disconnection
CAUTION
when servicing controls. Wiring errors can
cause improper and dangerous operation.
Figure 5-1 Line Voltage Field Wiring Connections
SERVICE
RECIRCULATION
SWITCH
PUMP
L2/N
W
G
BK
DOMESTIC
HOT WATER
PUMP
L4/N G
W
G
BK
Outdoor Armor Water Heater
120V SUPPLY
LINE GROUND NEUTRAL
BK
G W
G L1
L3
Installation & Operation Manual
Installation must comply with:
1. National Electrical Code and any other national, state,
provincial, or local codes, or regulations.

Line voltage connections

1. Connect 120 VAC power wiring to the line voltage
terminal strip in the junction box, as shown in FIG. 5-1.
2. Provide and install a fused disconnect or service switch
(15 amp recommended) as required by the code (see
FIG. 5-1).
3. The DHW (water heater) pump is shipped loose on all
Armor models. Wire the water heater pump as shown in
FIG. 5-1.
4. The outdoor water heater is capable of controlling a
building recirculation pump (field supplied). Wire the
building recirculation pump as shown in FIG. 5-1.
5. Dry contacts are sized for 1 hp/120V, 2 hp/240V or
15A/120V, 25A/240V.

Low voltage connections

1. Route all low voltage wires through the knockouts in the
rear of the water heater, as shown in FIG. 5-2.
2. Connect low voltage wiring to low voltage connection
board as shown in FIG. 5-3 on page 28 of this manual and
the water heater wiring diagram.
Figure 5-2 Routing Field Wiring (Models 151 - 286)
LOW VOLTAGE
CONNECTION BOARD
LOW VOLTAGE
WIRING
KNOCKOUT
PLUGS
IMG00298
LINE VOLTAGE
JUNCTION BOX
LINE VOLTAGE
WIRING KNOCKOUT PLUGS
25