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Page 14

INSTALLER'S GUIDE

Section 8. Heater Operation

8.1 TAM7 Heater Operation

Electric Heat 

1.     R-W contacts close on the comfort control sending 

24VAC to W1 of the AFC. 

2.     R-G contacts close on the comfort control sending 

24VAC to G of the AFC.

3.     The AFC communicates to the EHC that 1st stage elec-

tric heat is being called upon.

4.     The EHC determines the number of elements that are 

used for 1st stage and sends a message to the AFC for 

that correct cfm. (The EHC determines the amount of 

heat per stage by either factory programming or by the 

kw jumper position) 

5.     The AFC micro-processor sends a command to the serial 

communicating blower motor to run and close the blower 

interlock relay on the EHC. The blower motor will now run 

at the W1 electric heat cfm.

6.     On subsequent calls for W2 and/or W3, the EHC will 

communicate to the AFC the required airflow request 

and energize the additional relays. 

NOTE: The EHC has “lead-lag” logic built in that energizes 

the electric heat relays based upon cycle counts. 

For example: BAYEV**15 – The first time W1 only is ener-

gized; the K1 relay would close and energize the “A” 

heater. The second time W1 only is energized; the K2 

relay would close and energize the “B” heater. The third 

time W1 only is energized; the K3 relay would close and 

energize the “C” heater.  

Electric Heat 
1.    

When a request for electric heat is received, the AFC 

communicates to the EHC how much demand for auxil-
iary heat is being requested

2.   The EHC determines the number of elements that will be 

used for this request and sends a message to the AFC 
for proper airflow. (The EHC determines the amount of 
heat available per stage by either factory programming or 
by the kW jumper position) 

3.   The AFC sends a command to the serial communicating 

blower motor to run proper airflow and close the blower 
interlock relay on the EHC. 

4.   As demand from the thermostat increases, the EHC will 

communicate to the AFC the required airflow when ener-
gizing additional relays. 

NOTE: The EHC has “lead-lag or rotating” logic built in that 

energizes the electric heat relays based upon cycle 
counts. To verify operation of all heating elements, switch 
thermostat to Emergency Heat and raise the setpoint of 
the thermostat at least 5 degrees above the actual room 
temperature.

8.2 TAM8 Heater Operation

Electric Heat 

1.     R-W contacts close on the comfort control sending 

24VAC to W1 of the AFC. 

2.     R-G contacts close on the comfort control sending 

24VAC to G of the AFC.

3.     The AFC communicates to the EHC that 1st stage elec-

tric heat is being called upon.

4.     The EHC determines the number of elements that are 

used for 1st stage and sends a message to the AFC for 

that correct cfm. (The EHC determines the amount of 

heat per stage by either factory programming or by the 

kw jumper position) 

5.     The AFC micro-processor sends a command to the 

serial communicating blower motor to run and close the 

blower interlock relay on the EHC. The blower motor will 

now run at the W1 electric heat cfm.

6.     On subsequent calls for W2 and/or W3, the EHC will 

communicate to the AFC the required airflow request 

and energize the additional relays. 

NOTE: The EHC has “lead-lag” logic built in that energizes 

the electric heat relays based upon cycle counts. 

For example: BAYEV**15 – The first time W1 only is ener-

gized; the K1 relay would close and energize the “A” 

heater. The second time W1 only is energized; the K2 

relay would close and energize the “B” heater. The third 

time W1 only is energized; the K3 relay would close and 

energize the “C” heater.  

8.3 TAMG Heater Operation

Содержание BAYEVAC05BK1A

Страница 1: ...ounds of electrical and mechanical experience Any attempt to repair a central air conditioning product may result in personal injury and or property damage The manufacturer or seller cannot be respons...

Страница 2: ...sure the power supply matches the listing shown on the heater nameplate Section 2 General Information Section 3 Heater Assembly Labeled 8 10 kW breaker model illustrated Width Adjustment Brackets Hea...

Страница 3: ...lti poise 4 way M Product Tier Multi speed 7 Major Design Modifications Letter Sequence A No Descriptor Air Handler Coil 0 Size Footprint 17 5 x 21 5 A 21 0 x 21 5 B 23 5 x 21 5 C Cooling Size Air Han...

Страница 4: ...inimum Cabinet Width A B C A Maximum Cabinet Width A B C C Electric Heat Input Electric Heat kW 05 08 10 15 20 25 0 9 0 9 Connection Breaker B K Lugs L G Power Supply 208 230 1 60 1 200 1 50 A 208 230...

Страница 5: ...he cabinet size they match with for example the Filler Plate for cabinet B is marked B CAB 3 Tighten the Filler Plate screws loosened previously and add a screw provided to the bottom of each plate to...

Страница 6: ...rotated in order to comply with National Electric Code NEC Section 240 81 The NEC requires that circuit breakers operated verti cally must be oriented so that the on position of the breaker is upward...

Страница 7: ...LGA B or C Supply Duct Flange Kit install the kit before inserting the heater STEP 3 Insert heater assembly into heater compart ment 1 Move factory wiring out of the way and into the grooves provided...

Страница 8: ...to secure the factory supplied conduit nut from the inside of heater compartment 2 Connect field supplied 3 4 or 1 1 2 conduit to conduit nut Note Reducing bushings may be required for your applicati...

Страница 9: ...is 45 in lbs Field wiring Factory wiring Ground Field wiring Factory wiring Ground Breaker Model LG lug Model Factory wiring Field wiring BLK BLK RED RED GREEN GREEN STEP 9 Install the seal plate Bre...

Страница 10: ...PPLY PER LOCAL CODE EL EC TR IC HE AT CO NT RO L LO W VO LT AG E WI RING T11 T12 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 EHC IN AIR HA ND LE R GR GR BK RD 3 1 HIG H VOL TAG E WIR ING IN AIR HAN DLE R MOD EL BA...

Страница 11: ...LT S 208 VOLT S 4 80 20 4 80 20 3 6 1 7 3 3 6 17 3 C 4 80 20 3 6 1 7 3 CIRC UIT I CIRC UIT II 9 60 40 9 60 40 7 20 34 6 7 20 3 4 6 D 4 80 20 3 6 1 7 3 TOTA L HEAT ER RATI NGS KW A MPS RD RD RD RD RD R...

Страница 12: ...900 675 1 900 600 713 TAM8A0B30V21CB 723 808 723 1020 765 1020 680 808 765 1063 850 1105 TAM8A0C36V31CB 876 979 876 1236 927 1236 824 979 927 1288 1030 1339 1236 1442 TAM8A0C42V31CB 978 1093 978 1380...

Страница 13: ...f the jumper is moved to another kW rating and power is applied the factory programming on the PARK position is lost The jumper must then be applied to the appropriate rating per the heater model numb...

Страница 14: ...or by the kW jumper position 3 The AFC sends a command to the serial communicating blower motor to run proper airflow and close the blower interlock relay on the EHC 4 As demand from the thermostat i...

Страница 15: ...Page 15 INSTALLER S GUIDE...

Страница 16: ...Since the manufacturer has a policy of continuous product and product data improvement it reserves the right to change design and specification without notice Trane 6200 Troup Highway Tyler TX 75707...

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