GeneralAire GA51 Current Sensing Relay - Manual (Page 2)

Model Air Cleaner Installation
Checkout Procedures
GA50
24-volt Model
GA51
120-volt Model
Voltage Range 21-24 VAC, 50-60 Hz 100-125 VAC, 50-60 Hz
Sensing Current Minimum 5 amps Minimum 5 amps
Operating Ambient Temperature Range 40˚F - 104˚F 40˚F - 104˚F
Dimensions
Load Ratings Maximum (12 watts) 0.50 amps
Minimum (3 watts) 0.12 amps
Maximum (50 watts) 0.42 amps
Minimum (3 watts) 0.03 amps
Technical Specifications
24-volt and 120-volt Current Sensing Relay
24-volt and 120-volt Current Sensing Relays
Installation Instructions
AC 500 H.E .P.A Air Cle ane r AC500 H.E.P.A A ir Cleane r H.E.P.A, th e most eff icient air filtratio n system . Replace H .E.P.A.filte r every two years. Replace pr efilters eve ry six mon ths for optimal operation. Call your h eating con tractor for replace ment filters .
AC5 00 H.E.P .A Air Cleaner H.E.P .A, th e mo st eff icien t
air filt ratio n sy stem . Repla ce H.E .P.A.fi lter ev ery tw o yea rs. Repla ce pre filters every six m onths for opt imal o peratio n. Call y our he ating c ontrac tor for rep lacem ent filt ers.
EAC
2 x 4
Electrical
Box
120 VAC
120 VAC
GASI
EAC
1. Install the air cleaner according to the
manufacturer’s instructions.
2. Install the GA51 on the common wire of the blower
motor as shown in the diagram.
3. Open the main power junction box on the side of
the furnace and run the leads of the GA51 relay
into the junction box.
4. Connect the leads of the
GA51 relay in series with
one of the electronic air
cleaner leads. Connect the
remaining lead and ground
wire. The 120 VAC source
must be independent of
the furnace blower motor.
5. Check all wire connections, close junction box
and restore furnace to working order. Test proper
functioning by observing that the air cleaner’s
indicator lamp turns on when the blower runs and
turns off when the blower stops.
AC 500 H.E .P.A Air Cle ane r AC500 H.E.P.A A ir Cleane r H.E.P.A, th e most eff icient air filtratio n system . Replace H .E.P.A.filte r every two years. Replace pr efilters eve ry six mon ths for optimal operation. Call your h eating con tractor for replace ment filters .
AC5 00 H.E.P .A Air Cleaner
H.E.P .A, th e mo st eff icien t
air filt ratio n sy stem .
Repla ce H.E .P.A.fi lter ev ery tw o yea rs.
Repla ce pre filters every six m onths for opt imal o peratio n. Call y our he ating c ontrac tor for rep lacem ent filt ers.
EAC
2 x 4
Electrical
Box
120 VAC
120 VAC
GASI
EAC
1. Replace all safety devices.
2. Reconnect power to furnace.
3. Activate furnace blower motor.
4. Check load for operation. It should now be working properly. Check
indicating lamp or other conditions showing that the load is receiving
power.
5. Switch off the blower unit. The power to the device should shut off.
6. If the device is activated properly and turns off when the power
through the common wire is removed, installation is complete.
7. If the device is not powered when the blower is turned on:
• Ensure the device’s power switch is in the “ON” position.
• Recheck all wiring.
• Check line fuses.
• Confirm that five or more amps is flowing through the control wire.
Wrap additional turns around the bracket if necessary.