Lochinvar 000 through 2, 1 warranty Electrical Connections, Jacket Assembly

Venting of Gas Valves and Pressure Switches

The appliance, when installed, must be electrically grounded in

accordance

with

the requirements

of the authority

having

The diaphragm type gas valve and optional gas pressure switches

jurisdiction or in the absence of such requirements, with the latest

are provided with threaded termination points to be vented to the

edition of the National Electrical Code ANSI/NFPA No. 70. When

atmosphere, outside the building. The gas pressure regulation

the unit is installed in Canada, it must conform to the CAE C22.1,

function is provided by the ratio gas valve which does not require

Canadian Electrical Code, Part 1 and/or local Electrical Codes.

installation of a vent line. The diaphragm gas valve and optional

gas pressure switches are installed in the upper chamber of the

1.

All wiring between the appliance and

field

installed

appliance. Threaded vent line connections from components

devices

shall

be

made

with

type

T

wire

requiring an external vent line are provided on the component.

[63°F (35°C) rise].

These vent line connection points may be accessed by removing

the top jacket panels. Local codes may require the routing of

2.

Line

voltage wire

exterior

to the appliance must be

these bleeds and vents to the atmosphere, outside the building.

enclosed

in

approved

conduit

or

approved

Proper routing of vent lines to the atmosphere from the factory

metal clad cable.

supplied termination points is the responsibility of the installing

contractor.

3.

The

pump

must

run

continuously

when

appliance

is being fired. The Excel 10 temperature controller

ELECTRICAL CONNECTIONS

will energize the integral circulating pump for

continuous

operation

when

the

main

power

switch

is in the “ON” position and the run

stop

switch is

in

the

“RUN”

position.

If

the

internal

water

temperature

drops

below

45°F

(7.2°C)

the

pump

will automatically cycle on to help prevent freezing

(see Freeze Protection).

.

4.

To

avoid

serious

damage,

DO NOT energize the

ELECTRICAL

appliance

until

the

system

is full of

water.

Ensure

JUNCTION BOX

that all air is removed

from

the

bypass

piping

before beginning initial operation. Serious damage

CONTROL

may

result

if

the

appliance is operated

without

proper flow.

PUMP

5.

Provide

the

appliance

with

proper

overload

protection.

TABLE - R

AMP DRAW DATA

1,000,000 through 2,000,000 Btu/hr Models

APPROXIMATE TOTAL

Blower &

Pump

Amps

FIG. 45 Electric Power Connections - Controls and Pumps

Btu/hr

Controls

FLA

@ 120 AC

A 120 VAC, 15 Amp, 1 ph, 60 Hz circuit is required for operation of the integral circulating pump and a 120 VAC, 15 Amp, 1 ph, 60 Hz circuit for the appliance controls are recommended. If a single electrical service is provided to operate both the controls and pump, a 120 VAC, 30 Amp, 1 ph, 60 Hz circuit is recommended. The combustion air blower motor operates on 230 VAC, 3 ph, 60 Hz. This three phase voltage is generated by the variable frequency drive (VFD) and supplied directly to the blower motor. NOTE: No 230 VAC electrical service is

required for operation of the combustion air blower.

1,500,000	6.7	8.8	15.5
__________	____________	__________	____________
1,700,000	7.2	8.8	16
__________	____________	__________	____________
2,000,000	7.2	8.8	16

JACKET ASSEMBLY

Inner Jacket - The inner jacket assembly is constructed from a special corrosion resistant stainless steel. This includes both the front primary heat exchanger chamber and the rear secondary heat exchanger chamber. All screws and fasteners used for assembly of

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