38ан124,134, A caution, Caution – Carrier 38AH044-134 User Manual
Page 31: Lb2j
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38АН124,134
MODULE
124А OR 134A
ТВЗ
Ф
TIME
GUARD®
CONTROL
SDR2 ^
CCPS -ÆA^
MODULE
124B OR 134B
ACCESSORY
RELAY
PACKAGE
CR1
—^—II—vio
CR2
TB3
TIME
GUARD®
CONTROL
SDR2 ^
—It—^
CCPS
SDR2
;cAi
'CA2]
SDR2
|] Щ И
L
j
U_SEE
NOTE 2
_____ I
|T
ls
1
I
T
lls
I
LB2j
I___ I
-
yel
A
CAUTION
Internal TSR-01 relay contacts are rated for 1 amp/24 vac.
q
-COMMUNICATION
OUT
- COMMUNICATION IN
CARRIER COMMUNICATING
TEMP MONITOR THERMOSTAT
.(MODEL MS(T)01ES)
++-WHtTE--
e
«ED— e
BLUE— e
____YELLOW- e
-- - — OREEN-- <D
REMOTE ROOM
TEMP SENSOR
•Jumper removed only when separate 24-v transformer power
source is used to power the TSR-01 relay pack
TSR-01 RELAY PACK CIRCUIT BOARD
-----------
fan
"I
1
HEAT 2 -i
-------- HEAT 1 -5
0
'■--------- COOL2-------------‘ I
------- COOL1---------------- '
" —"________ J
I —24 VAC (R)
24 VAC (Comrtran)
NOTES:
1 Liquid line solenoid valves LLS-A1 and A2 are used for
solenoid drop on Module 124A or 134Aon circuit A Liq
uid line solenoid valves LLS-B1 and B2 are used for
solenoid drop for Module 124B or 134B. Solenoid drop
is a safety feature which prevents refrigerant migration
to the compressor during the OFF cycle It is recom
mended on all systems and required on systems where
piping exceeds 75 ft (22 9 m) in length
2
Disconnect black wire from CR2 terminal 6; cap loose
end and secure Connect new field-supplied wire from
CR2 terminal 6 to ТВЗ terminal 1 on module 124B or
134B
3 The TSR-01 relay pack requires 10 va
4
Factory wiring is in accordance with NEC; field modi
fications or additions must be in compliance with all ap
plicable codes
5 Wiring for field power supply must be rated 75 C mini
mum Use copper, copper-clad aluminum, or alumi
num conductors Maximum incoming wire size for each
terminal block is 500 kcmil.
6. Terminal blocks (ТВЗ) are for external field control con
nections Control connections must be class 1 wiring
10
Field-supplied
components
{IFC,
LLS-A1,A2,
and
LLS-B1 ,B2) must have a maximum sealed coil rating
of 30 va each (0 25 amp at 120 vac and 0 13 amp at
230 vac) Thermostats must have a minimum pilot cluty
rating of 300 va (2 5 amps at 120 vac)
Replacement of factory wires must be with type 105 C
wire or its equivalent.
Field-supplied liquid line solenoid valves installed at the
evaporator are required on all units
Units have 175 va of power available for field-installed
accessories.
To minimize voltage drop, the following wire sizes are
recommended:
LENGTH —
Ft(M)
INSULATED WIRE — AWG
(35 C Minimum)
Up to 50
(15.2)
No 18
50-75
(15.2-22.9)
No 16
More Than 75
(22.9)
No 14
LEGEND
AWG
— American Wire Gage
C
— Compressor Contactor
CCPS
— Capacity Control Pressure
Switch
CR
— Control Relay
HD
— Heating Device
IFC
— Indoor-Fan Contactor
IFR
— Indoor-Fan Relay
kcmil
— Thousand Circular Mils
LLS
— Liquid Line Solenoid
NEC
— National Electrical Code
(U S.A Standard)
R
— Heating Relay (field-
supplied 24-v sealed coil,
10 va maximum rating)
RV
— Reversing Valve
SDR
— Solenoid Drop Relay
TB
— Terminal Block
TR
— Timer Relay
Factory Wiring
------------- Field Wiring
Fig. 23 — Field Wiring, One 2-Stage Thermostat — Units 38AH124 and 134
31