22
Fig. 41 — Typical Module Installation
SINGLE POINT BOXES AND SUPPLEMENTARY FUSES
When the unit MOCP device value exceeds 60A, unit-mounted
supplementary fuses are required for each heater circuit. These
fuses are included in accessory single point boxes, with power
distribution and fuse blocks. The single point box will be in-
stalled directly under the unit control box, just to the left of the
partition separating the indoor section (with electric heaters)
from the outdoor section. The single point box has a hinged ac-
cess cover. See Fig. 42.
Fig. 42 — Typical Single Point Installation
On 50HC units, all fuses are 60A. Single point boxes contain-
ing fuses for 208/230-v applications use UL Class RK5 250-v
fuses (Bussmann FRNR 60 or Shawmut TR 60R). Single point
boxes for 460-v and 575-v applications use UL Class T 600-v
fuses (Bussmann JJS 60 or Shawmut A6T 60). (Note that all
heaters are qualified for use with a 60A fuse, regardless of ac-
tual heater ampacity, so only 60A fuses are necessary.)
On 07-09 size units, unit heater applications not requiring sup-
plemental fuses require a special single point box without any
fuses. Connect power supply conductors to heater conductors
and field-supplied base unit power tap leads (see Completing
Heater Installation section) inside the empty single point box
using UL-approved connectors.
SAFETY DEVICES
Electric heater applications other than CRHEATER113B00-
116B00, 128B00, and 129B00 use a combination of 24-v con-
trol side break/auto-reset or line-break/auto-reset limit switch-
es and a pilot-circuit/manual reset limit switch to protect the
unit against over-temperature situations.
CRHEATER113B00-116B00, 128B00, and 129B00 electric
heater applications use a combination of 24-v control side
break/auto-reset, line-break/non-resettable “one shot” limit
switches and a pilot-circuit/manual reset limit switch to protect
the unit against over-temperature situations.
Line-break/auto-reset limit switches, 24-v control side break/
auto-reset and line-break/non-resettable “one shot” limit
switches are mounted on the base plate of each heater module.
See Fig. 43. These are accessed through the indoor access pan-
el. Remove the switch by removing two screws into the base
plate and extracting the existing switch.
Pilot-circuit/manual reset limit switch is located in the side
plate of the indoor (supply) fan housing. See Fig. 43.
Completing Heater Installation
FIELD POWER CONNECTIONS
Tap conductors must be installed between the base unit’s field
power connection lugs and the single point box (with or with-
out fuses). See Fig. 38. Refer to unit wiring schematic. Use
copper wire only. For connection using the single point box
without fuses, connect the field power supply conductors to the
heater power leads and the field-supplied tap conductors inside
the single point box. Use UL-approved pressure connectors
(field-supplied) for these splice joints.
Fig. 43 — Typical Location of Heater Limit Switches
(3-phase heater shown)
Table 6 — Heater Model Number
Bare Heater Model Number
C
R
H
E
A
T
E
R
0
0
1
A
Heater Sales Package PNO
Includes:
Bare Heater
Carton and Packing Materials
Installation Sheet
C
R
H
E
A
T
E
R
1
0
1
A
or
B
0
0
TRACK
FLANGE
ALLIED
PA
MO
D
ELN
O.
ERI
ALN
O.
C
O
R
P
.
11
1
3
21
2
3
O
D
22.2
3
1
2
3
I
S
TED
AIR
NDITIONING
UIP
ACCE
SS
3
46N.
P/ N
2--5610
- - 4
REV
111
3
212
3
SINGLE
POINT
BOX
FIELD POWER
CONNECTIONS
HINGED
COVER
ALLIEDPA
MOD
ELN
O.
ERIA
LNO.
C
O
R
P
.
11
1
3
21
2
3
OD
22.2
3
1
2
3
I
S
TED
AIR
NDITIONING
UIP
ACCE
SS
3
46N.
P/ N
2-- 5610
4
-- REV
PILOT --- CIRCUIT/MANUAL
RESET LIMIT SWITCH
LINE--- BREAK
LIMIT SWITCHES
Содержание WeatherMaster 50HC04
Страница 32: ...32 Fig 63 RTU Open Overlay for Economizer Wiring ...
Страница 33: ...33 Fig 64 VFD Overlay for W2770 Controller Wiring ...
Страница 85: ...85 Fig B 50HC A04 A06 PAC Control Diagram 208 1 60 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 86: ...86 Fig C 50HC A07 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 89: ...89 Fig F 50HC D08 D09 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 90: ...90 Fig G 50HC D11 PAC Control Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 91: ...91 Fig H 50HC D12 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 92: ...92 Fig I 50HC D14 PAC Control Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 93: ...93 Fig J 50HC A04 A06 PAC Power Diagram 208 230 1 60 APPENDIX D WIRING DIAGRAMS ...
Страница 94: ...94 Fig K 50HC A04 A06 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 95: ...95 Fig L 50HC A07 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 98: ...98 Fig O 50HC D07 PAC Power Diagram 575 3 60 6 Ton 2 Stage with Dehumidification APPENDIX D WIRING DIAGRAMS ...
Страница 99: ...99 Fig P 50HC D08 D09 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 100: ...100 Fig Q 50HC D11 PAC Power Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 101: ...101 Fig R 50HC D11 PAC Power Diagram 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 102: ...102 Fig S 50HC D12 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 103: ...103 Fig T 50HC D14 PAC Power Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 104: ...104 Fig U 50HC D14 PAC Power Diagram 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Страница 109: ...109 Fig Z 50HC D12 PAC Control Diagram 230 460 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 110: ...110 Fig AA 50HC D14 PAC Control Diagram 230 460 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 111: ...111 Fig AB 50HC A04 A06 PAC Power Diagram 208 230 1 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 112: ...112 Fig AC 50HC A04 A06 PAC Power Diagram 208 230 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 113: ...113 Fig AD 50HC A04 A06 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 114: ...114 Fig AE 50HC A07 PAC Power Diagram 208 230 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 115: ...115 Fig AF 50HC A07 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 116: ...116 Fig AG 50HC D08 D09 PAC Power Diagram 208 230 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 117: ...117 Fig AH 50HC D08 D09 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 118: ...118 Fig AI 50HC D11 PAC Power Diagram 208 230 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 119: ...119 Fig AJ 50HC D11 PAC Power Diagram 460 3 60 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 121: ...121 Fig AL 50HC D14 PAC Power Diagram 208 230 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 122: ...122 Fig AM 50HC D14 PAC Power Diagram 460 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 123: ...123 Fig AN 50HC D14 PAC Power Diagram 575 3 60 with Humidi MiZer System APPENDIX D WIRING DIAGRAMS ...
Страница 124: ...124 Fig AO PremierLink System A04 A06 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 125: ...125 Fig AP RTU Open System Control A04 A06 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 126: ...126 Fig AQ PremierLink System A07 D14 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Страница 127: ...127 Fig AR RTU Open A07 D14 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...