Carrier 31KAX Manuel d'utilisateur télécharger pdf (Page 7)

A CAUTION

Do not baffle off any portion of the entering-air side of the

air cleaner.

9. Seal all joints on downstream side of air cleaner to prevent

infiltration of contaminated air.

STEP 3. ELECTRICAL CONNECTIONS

All wiring must comply with applicable local and national

codes. Determine best power wiring routing (see Section A for

Internal Connections and Section B for External Connections).

A CAUTION

Be sure all

procedures.

incoming power is off before beginning any

A. Internal Electrical Connections

Proceed as follows to make internal electrical connections.

1. With power door removed, remove junction box cover adja-

cent to female plug on casing upper channel.

2. Install protective bushing from inside the air cleaner into

the upper hole on the side channel adjacent to the furnace.

Be sure bushing projects into furnace opening protecting

wires from sharp edges on cabinet opening.

3. Install protective bushing through top rail as shown in

Fig. 10.

4. Plug unused hole on top of unit with plug provided in

parts bag.

5. Route power wires through bushing channel at top of cabi

net, down side channel, and through bushing in side chan

nel and into furnace opening. See Fig. 10.

6. Replace cover of junction box.

7. Install wire cover (provided in parts bag) under top flange

and secure to side channel with screw provided.

8. Connect power leads as follows:

Single speed furnaces—Electronic air cleaner is wired in par

allel with fan motor. See Fig. 11.

Multispeed direct-drive furnaces—If the air cleaner is wired to

a multispeed direct-drive motor, it must be isolated by a relay

or sail switch. Use either air cleaner relay P/N P283-1203 or sail

switch P/N 69105D1. See Pig. 12 or 13.

Furnaces with printed circuit control module—Electronic air

cleaner is wired to furnace terminals EAC-1 and EAC-2. See

Fig. 14 for wiring connections'.

9. Connect ground wire to base unit ground.

NOTE: For non-corporate furnaces, wire unit using conduit and

strain relief the wires.

A CAUTION

Be sure all internal wiring connections are tight before unit

is operated.

B. External Electrical Connections

1. Attach power supply conduit to hole in top of electronic air

cleaner. Do not use extension cord to connect to electrical

power source.

2. Cut electronic air cleaner wires to 6-in. long; strip ends.

Connect power leads to black and white pigtails extending

from female receptacle, using field supplied wirenuts. See

Fig. 9.

NOTE: Do not connect aluminum conductor to electrical con

nections of the electronic air cleaner (copper wire only).

3. Connect power leads as follows:

4. Connect electronic air cleaner ground wire (green) to ap

propriate supply ground.

5. Replace cover of junction box.

Single-speed furnaces. Electronic air cleaner is wired in paral

lel with fan motor. See Fig. 11.

Multispeed direct-drive furnaces. If the air cleaner is wired to a

multispeed direct-drive motor, it must be isolated by a relay or

sail switch. Use either air cleaner relay P/N P283-1203 or sail

switch P/N 69105D1. See Fig. 12 or 13.

Furnaces with printed-circuit control module. Electronic air

cleaner is wired to furnace terminals EAC-1 and EAC-2. See

Fig. 14 for wiring connections.

Fan-coil units. Electronic air cleaner (120-v) must be wired to

fan-coil circuit board terminals EAC-1 and EAC-2 only as

shown in Fig. 15. Terminals EAC-1 and EAC-2 supply 240-vac.

Terminal EAC-1 is energized continuously; terminal EAC-2 is

energized only with the fan motor.

C. Final Assembly

A CAUTION

Be sure all field electrical connections are tight before unit

is operated.

1. Slide prefilters and air cleaner cells into cabinet.

NOTE; Units are shipped for air entering the right-hand side of

the air cleaner. Reverse the position of the prefilter and the air

cleaner cells in the cabinet for air entering the left-hand side of

the air cleaner as indicated in Fig. 8. Be sure all airflow arrows

are pointing in the direction of the airflow through the air

cleaner and that the prefilter is on the entering-air side.

2. Check contact spring location: cell contact springs must be

relocated for left-hand units. Remove screw holding con

tact spring to cells and reinstall at opposite end (See Fig.

17). Be sure all airflow arrows are pointing in the direction

of the airflow through the air cleaner and that the

prefilters are on the entering-air side.

3. Deform prefilter guide on side opposite prefilters so that

prefilters may not be reinstalled incorrectly.

4. Replace power door by first inserting bottom tab into place

on bottom edge of door opening. Push top of door and

guide door attachment knob screw into threads. Tirn knob

clockwise until screw engages threads in casing. Tbrn knob

clockwise until door is secure. Ensure good electrical con

tact between power door and unit components.

5. Unit can be installed with airflow through cabinet in ei

ther direction. Apply airflow decal (provided) to cabinet,

observing actual airflow direction. See Fig. 17.

STEP 4. STARTUP AND ADJUSTMENTS

The electronic components of the unit convert the incoming

VAC to VDC power supply. Unfiltered, contaminated air passes

through an aluminum mesh prefilter which removes larger air

borne particles and distributes the air uniformly across the ion

izer-collector assembly. The air passes through the ionizer and

is charged with 7300 VDC. The ionizer imparts a positive elec

trical charge to the remaining contaminants. As the air contin

ues through the collector section, the charged contaminants are

attracted to the alternately charged collector plates. The

charged contaminants are electrostatically held by the collec

tor, thus purifying the airstream.

1. Ensure that entire electronic air cleaner is clean, dry, and

free of foreign objects.

2. Restore power to system.

3. Move ON-OFF switch on power door to ON position.

4. Set room thermostat to start blower.

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Carrier 31KAX Manuel d'utilisateur Page 7

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