Reznor JT4BD Unit Installation Manual - Manual (Page 5)

5
ElEctrIcal WIrIng
WarnIng:
to avoid risk of electrical shock, personal
injury, or death, disconnect all electrical power
to the unit before performing any maintenance
or service. the unit may have more than one
electrical supply.
label all wires prior to disconnection when
servicing the unit. Wiring errors can cause
improper and dangerous operation
• All electrical connections must be in compliance with
all applicable local codes and ordinances, and with the
current revision of the National Electric Code (ANSI/
NFPA 70).
• For Canadian installations the electrical connections
and grounding shall comply with the current Canadian
Electrical Code (CSA C22.1 and/or local codes).
Pre-Electrical checklist
√ Verify that the voltage, frequency, and phase of the
supply source match the specifications on the unit
rating plate.
√
Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
Refer to the unit wiring label for proper high and low
voltage wiring.
√
Verify factory wiring is in accordance with the unit
wiring diagram (Figures 13-16, pages 22-25). Inspect
for loose connections.
√
Phase balance on 3 phase units must always be
checked. See Unbalanced 3-Phase Supply Voltage
section (page 8).
Line Voltage
• A wiring diagram is located on the inside cover of the
electrical box of the outdoor unit. The installer should
become familiar with the wiring diagram before making
any electrical connections to the outdoor unit.
•
an electrical disconnect must be located within
sight of and readily accessible to the unit. This
switch shall be capable of electrically de-energizing
the outdoor unit.
• Line voltage to the unit should be supplied from a
dedicated branch circuit containing the correct fuse
or circuit breaker for the unit. Incoming field wiring
and minimum size of electrical conductors and circuit
protection must be in compliance with information listed
on the outdoor unit data label. Any other wiring methods
must be acceptable to authority having jurisdiction.
• The outdoor unit requires both power and control circuit
electrical connections. Refer to the wiring diagrams for
identification and location of outdoor unit field wiring
interfaces. Make all electrical connections in accordance
with all applicable codes and ordinances.
5. Realign the assembly nut on the valve body and hand
tighten both components. Mark a line on both bodies and
then tighten an additional ¼ turn using two wrenches.
The movement of the two lines will show how much the
nut is tightened.
Figure 3. removal of orifice
Liquid
Valve
Restrictor
Swivel Nut
Figure 2. Liquid Valve, Restrictor, &
Swivel nut adapter