Electrical Installation; Field Power Wiring - Daikin RoofPak RPS Series Installation And Maintenance Manual

Roof mounted singlezone heating and cooling units with microtech iii unit controllers

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Field Power Wiring

Hazardous voltage. Can cause severe injury or death.

Disconnect electric power before servicing equipment. More

than one disconnect may be required to de-energize the unit.

Wires are located in base rail. Move wires before drilling hole

through base rail.

Provide proper line voltage and phase balance. Improper line

voltage or excessive phase imbalance constitutes product

abuse. It can cause severe damage to the unit's electrical

components.

Wiring must comply with all applicable codes and ordinances or

in the absence of local codes, with the National Electrical Code

ANSI/NFPA 70 and/or Canadian Electrical Code CSA C22.1.

The warranty is voided if wiring is not in accordance with these

specifications. An open fuse, tripped circuit breaker, or Manual

Motor Protector (MMP) indicates a short, ground, or overload.

Before replacing a fuse, circuit breaker, MMP, or restarting a

compressor or fan motor, identify the trouble and correct.

According to the

National Electrical

means shall be located within sight of and readily accessible

from the air conditioning equipment. The unit can be ordered

with an optional factory mounted disconnect switch. This switch

is not fused. Power leads must be over-current protected at

the point of distribution. The maximum allowable overcurrent

protection (MROPD) appears on the unit nameplate.

All RPS, RFS, and RDT

All units are provided with internal power wiring for single or

dual point power connection. The power block or an optional

disconnect switch is located within the main control panel. Field

power leads are brought into the unit through 3" knockouts

in the bottom of the main control panel. Refer to the unit

nameplate to determine the number of power connections. See

Figure 67

and

Table 20 on page

If the unit has a factory mounted disconnect switch, generally

the switch must be turned OFF to open the main control panel

door. However, the door can be opened without disconnecting

power by following the procedure covered on

is done, use caution since power is not removed from the unit

or the controller.

NOTE: To wire entry points, refer to certified drawings for

dimensions.

The preferred entrance for power cables is through the bottom

knockouts provided on the unit. If side entrance is the only

option, a drilling location is provided.

Follow the drilling dimensions exactly to prevent damage to the

control panel. The dimensions provided are the only possible

point of side entrance for the power cables.

IM 926-3 • ROOFPAK APPLIED SYSTEMS

DANGER

CAUTION

Code, a disconnecting

52.

page

115. If this

Figure 67: RPS/RDT and RFS Power Wiring Connections

Electric heat

control panel

Optional

disconnect

(DS3)

3" power

knockouts

Optional

disconnect (DS2)

Main disconnect (DS1)

or power block (PB1)

Figure 68: Optional Side Power Wiring Entrance

M a i n

C o n t r o l

P a n e l

2 . 7 5 "

( 7 0 m m )

R e m o v e L i f t i n g B r a c k e t

( I f L o c a t e d H e r e )

B e f o r e D r i l l i n g H o l e

RCS Units

Field power wiring is connected from the main control panel in

the RFS unit to power block (PB4) or an optional disconnect

switch (DS4) located in the condenser control panel of the RCS

unit. Power leads enter the bottom left corner of the condenser

control panel through the conduit hubs shipped with the unit.

Refer to

Figure 70

and

Figure