Carrier AquaForce 30XA Series Installation Instructions Manual page 136

1. Factory wiring is in accordance with UL 1995 standards. Field
modifications or additions must be in compliance with all applica-
ble codes.
2. Wiring for main field supply must be rated 75 C minimum. Use
copper for all units.
Incoming wire size range for the terminal block is no. 4 AWG to
500 kcmil.
Incoming wire size range of non-fused disconnect with MCA up to
599.9 amps is 3/0 to 500 kcmil.
Incoming wire size range of non-fused disconnect with MCA from
600 to 799.99 amps is 1/0 to
500 kcmil.
Incoming wire size range of non-fused disconnect with MCA from
800 to 1199.99 amps is 250 to
500 kcmil.
3. Terminals 9 and 10 of TB5 are for field external connections for
remote on-off. The contacts must be rated for dry circuit applica-
tion capable of handling a 24-vac load up to 50 mA.
4. Terminals 1 and 2 of TB5 are for external connections of chilled
water pump interlock. The contacts must be rated for dry circuit
application capable of handling a 24-vac load up to 50 mA.
5. Terminals 11 and 13 of TB5 are for control of chilled water pump 1
(PMP 1) starter. Terminals 13 and 15 of TB5 are for control of
Notes for Control and Power Wiring Schematic
Fig. 58 — Control and Power Wiring Schematic (cont)
chilled water pump 2 (PMP 2) starter. The maximum load allowed
for the chilled water pump relay is 5 VA sealed, 10 VA inrush at
24 v. Field power supply is not required.
6. For control of chilled water pumps, a set of normally open contacts
rated for dry circuit application must be supplied from field-sup-
plied pump starter relay. Connect contacts to violet and pink wires
in harness from main base board Channel 18. Wires in harness
are marked PMP1-13 and PMP1-14.
7. Terminals 12 and 13 of TB5 are for an alarm relay. The maximum
load allowed for the alarm relay is 10 VA sealed, 25 VA inrush at
24 v. Field power supply is not required.
8. Make appropriate connections to TB6 as shown for Energy Man-
agement board options, the contacts for Occupancy Override,
Demand Limit, and Ice Done options must be rated for dry circuit
application capable of handling a 24 vac load up to 50 mA.
9. Terminal blocks TB5 and TB6 are located in the display panel box
for all units. Refer to the certified dimensional drawing for each unit
to get the exact locations.
10. Refer to certified dimensional drawings for exact locations of the
main power and control power entrance locations.
11. J3-24 and 25 of EMM board are for run relay and shutdown relay.
The maximum load allowed for the run and shutdown relay is
10 VA sealed, 25 VA inrush at 24 v.
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