Carrier 38AH044-134 - Manual (Page 31)

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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--
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