Installation; Unit Suspension; Electrical Connections; Warning - Modine LODRONIC HCH 22 Manuel D'installation Et D'entretien

UNIT SUSPENSION / INSTALLATION

UNIT SUSPENSION

Horizontal delivery units. All horizontal delivery units, have
two 1/2"-13 tapped holes in the top for unit suspension. Piping
support hangers or clamps are recommended and should be
placed as close to the unit heater as possible. See Figure 7.1.
Note: A pipe hanger adapter kit as illustrated in Figure 7.1
is available as an accessory from Modine. The kit consists of
two drilled 3/4" I.P.S. pipe caps and two capscrews to facilitate
threaded-pipe suspension. One kit will mount applicable units.
Figure 7.1 - Unit Suspension
Piping - See Figure 8.1
1. Branch piping to and from unit heater should include swing
joints to allow for expansion and contraction of the piping
without placing a strain on the unit heater element.
2. Install pipe unions and shut-off valves in lines to and from
each unit heater to allow maintenance or replacement of unit
without shutting down and draining entire system. For hot
water systems, include a balancing valve in return line for
water flow regulation. A drain valve should also be provided
below each unit heater to allow removal of water from the
heating coil if located in an area subject to freezing.
3. Hot water systems, rapid air removal is required because
entrained air is a cause of corrosion. Hot water systems
should be equipped with suitable air vent valves for rapid and
complete removal of air at the high points and ends of both
supply and return mains.
4. Install a scale pocket at bottom of unit heater to collect dirt
and scale as shown in illustrations. Pipe diameter must be the
same size as unit connections and about 6" long.
5. Provide adequate pipe hangers, supports, or anchors to
secure the piping system independently of the unit heater.

Electrical Connections

1. Disconnect power supply before making wiring connections

to prevent electrical shock and equipment damage.

2. All appliances must be wired strictly in accordance with

wiring diagram furnished with the appliance. Any wiring

different from the wiring diagram could result in a hazard
to persons and property.
3. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
1. Do not install units below 8 feet measured from the bottom
of the unit to the floor.
2. Do not reuse any electrical component which has been
wet. Replace component.
3. Ensure that the supply voltage is within +10% and -5% from
rated voltage listed on the nameplate.
1. Installation of wiring must conform with local building codes,
or in the absence of local codes, with the National Electric
Code ANSI/NFPA 70 - Latest Edition. Unit must be electrically
grounded in conformance to this code. In Canada, wiring must
comply with CSA C22.1, Electrical Code.
1-558.0

WARNING

CAUTION
7