Press the gasket over the screw heads. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not
Mount the weatherproof cover to the backing plate as shown in Fig. 12. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching.
COVER – | RECEPTACLE | |||||
WEATHERPROOF | ||||||
NOT INCLUDED | ||||||
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BASE PLATE FOR
GFCI RECEPTACLE
Fig. 12 — Weatherproof Cover Installation
All Units —
Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate. See Table 8. On
Field Control Wiring —
38AUQ unit control voltage is 24 v. See Fig. 19 for typical field control connections and the unit’s label diagram for field- supplied wiring details. Route control wires to the 38AUQ unit through the opening in unit’s end panel to the connections terminal board in the unit’s control box.
Remainder of the system controls connection will vary according to the specific construction details of the indoor section. Fig. 13 depicts typical connections to a Carrier 40RUQ fan coil unit. Plan for field connections carefully and install control wiring correctly per the project plan. Additional components and supplemental transformer accessory may be required.
The 38AUQ unit requires an external temperature control device. This device can be a thermostat
Thermostat —
Install a
If the thermostat contains a logic circuit requiring
For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire (35°C minimum). For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire (35°C minimum). For over 75 ft. (23 m), use no. 14 AWG insulated wire (35°C minimum). All wire sizes larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.
PremierLink (accessory installation) – Refer to Form 33CS- 58SI for details on connecting the PremierLink controller and its various sensors.
R
G
Y1
O/B/Y2
(Notes 1, 2)
W1
W2
(Note 4)
C
(Note 3)
Note 1: Typical
Note 2: Y2 to economizer required on
Note 3: Connect only if thermostat requires
Note 4: Connect W2 if supplemental heater installed Field Wiring
Fig. 13 — Typical Remote Thermostat Connections
13