29
CONTROL CIRCUIT WIRING
09DP018-030 Units — The units require a 24-volt externally
supplied power to energize the control circuit connected to
TB2 terminal 1 and 2 shown in Fig. 20.
09DP035-0130 Units — Size 035 to 130 units are designed to
operate with a 24-v field-supplied control power or can be
powered by internal control transformer using contact closures
to energize each control circuit. The 035-130 size units are de-
signed to operate with either single, dual circuit or multiple unit
applications.
When 24-v control power is supplied from external source
(30MP application), this application requires the 24-v external-
ly supplied power to energize the control relays for each circuit.
Unit 1/Cir A should be connected to TB2 terminal 1 and 2.
Unit 2/Cir B should be connected to TB2 terminal 3 and 4. See
Fig. 21.
FIELD CONTROL WIRING — With 24-v internally sup-
plied power applications (30HX applications), the application
requires field-supplied control relay(s) to energize contacts to
energize the 09DP control relays for each circuit.
1. Install field-supplied jumpers between terminals 2, 3
and 6 of TB2. See Fig. 22.
2. Connect field-supplied wiring and relay for Unit 1/Cir-
cuit A. Contacts should be connected between TB2
terminal 1 and 5.
3. For single unit applications a jumper should be
installed between TB2 terminals 1 and 4. See Fig. 23.
4. Connect field-supplied wiring and relay for Unit 2/Cir-
cuit B. Contacts should be connected between TB2 ter-
minals 4 and 5.
Fan Cycling Pressure Switches (FCPS) — Unit sizes 040-
060 and 075-130 require fan cycling pressure switches to be in-
stalled and wired into the control circuit. See Fig. 14 and 15 for
mounting location of FCPS.
For sizes 040-060:
1. The FCPS wires should be routed through bushing
located in bottom of control box as shown in Fig. 24.
2. The FCPS1 and FCPS2 switches are wired in parallel
into the control circuit as shown in Fig. 25. The VIO
and PNK wires are wired together when shipped from
the factory. The connectors should be removed and the
FCPS wired in using wire nuts.
Fig. 20 — 09DP018-030 Control Circuit Wiring
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Fig. 21 — 09DP035-130 with 30MP
Control Circuit Wiring
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CAUTION
Since the 09DP units are compatible with multiple refriger-
ants, the correct FCPS must be installed for proper opera-
tion of unit. Damage to unit could result.
Fig. 22 — 09DP035-130 with 30HX
Control Circuit Wiring
a09-598
JUMPER
REQUIRED
FOR SINGLE
CIRCUIT
APPLICATIONS
Fig. 23 — Single Circuit 09DP035-130 with 30HX
Control Circuit Wiring
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