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Table 2 — Humidi-MiZer Reheat Control Board I/O
POINT NAME
TYPE
CONNECTION PIN NUMBER
UNIT CONNECTION
NOTE
Humidistat/LTLO
DI, 24VAC
J1A-1 (1)
LTLO
Thermostat W1
DI, 24VAC
J1A-2 (2)
CTB-REHEAT-4
Econ Y1
DI, 24VAC
J1A-6 (6)
CTB-REHEAT-5
Thermostat G
DI, 24VAC
J1B-1 (7)
CTB-REHEAT-1
24V Power (J1)
24VAC
J1B-3 (9)
CTB-R
24V Power (J2)
24VAC
J2-1
CTB-R
Econ Y2
DI, 24VAC
J1B-5 (11)
CTB-REHEAT-7
2-circ only
COMP1
DO, 24VAC
J1A-5 (5)
CTB-HEAT-6
IFM
DO, 24VAC
J1B-4 (8)
CTB-REHEAT-2
COMP2
DO, 24VAC
J1B-4 (10)
CTB-REHEAT-8
LSV
DO, 24VAC
J2-2
FTP (BLK)
DSV1
DO, 24VAC
J2-3
DSV
NOT LSV
DO, 24VAC
J2-4
2-circ only
DSV2
DO, 24VAC
J2-5
2-circ only
LEGEND
COMP
—
Compressor
CTB
—
Control Terminal Board
DI
—
Discrete Input (switch)
DO
—
Discrete Output (switch)
DSV
—
Discharge (gas) Solenoid Valve
Econ
—
Economizer
FPT
—
Freeze Protection Thermostat
IFM
—
Indoor (Supply) Fan motor
LSV
—
Li
q
uid Solenoid Valve
LTLO
—
Low Temperature Lockout
REHEAT
—
Connection Strip REHEAT (on CTB)
Table 3 — Inputs/Modes/Outputs Summary
Y1
Y2
W1
G
HUM/LTLO
MODE
COMP1
COMP2
IFM
LSV1 LSV2 LSV NOT
DSV1
DSV2
OFF
OFF
OFF
ON
OFF
Normal
Fan
OFF
OFF
ON=G OFF
OFF
ON=R
OFF
OFF
ON
OFF
OFF
On
OFF
Normal
Cool1
ON=Y1
OFF
ON=G OFF
OFF
ON=R
OFF
OFF
ON
ON
OFF
ON
OFF
Normal
Cool2
ON=Y2
ON
ON=G OFF
OFF
ON=R
OFF
OFF
OFF
OFF
ON
X
OFF
Normal
Heat 1
OFF
OFF
ON=G OFF
OFF
ON=R
OFF
OFF
OFF
OFF
OFF
ON
ON
Reheat
Dehumidify
ON
ON
ON=G
ON
ON
OFF
ON=R ON=R
ON
OFF
OFF
ON
ON
Subcool Cir1/
Reheat Cir2
Cool1 and
Cool2/Subcool-
Dehumidify
ON
ON
ON=G
ON
ON
OFF
OFF
ON=R
ON
ON
OFF
ON
ON
Subcool Cir1
and Cir2
Cool1 and
Cool2/Subcool-
Dehumidify
ON
ON
ON=G
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
X
ON
Heat Override
Heat 1
OFF
OFF
ON=G OFF
OFF
ON=R
OFF
OFF
OFF
OFF ON+W2
X
ON
Heat Override
Heat 1 and 2
OFF
OFF
ON=G OFF
OFF
ON=R
OFF
OFF
Table 4 — Humidi-MiZer
®
Troubleshooting
PROBLEM
CAUSE
REMEDY
Subcooling Reheat Mode Will Not
Activate.
General cooling mode problem.
See Cooling Service Troubleshooting (Table 5).
No dehumidification demand.
See No Dehumidification Demand, below.
CRC relay operation.
See CRC Relay Operation, below.
Circuit RLV, CLV or LDV valve problem.
See CLV, RLV or LDV Valve Operation, below.
Hot Gas Reheat Mode Will Not
Activate.
General cooling mode problem.
See Cooling Service Troubleshooting (Table 5).
No dehumidification demand.
See No Dehumidification Demand, below.
CRC relay operation.
See CRC Relay Operation, below.
Circuit RLV, CLV or LDV valve problem.
See CLV, RLV or LDV Valve Operation, below.
Circuit RDV valve is not open.
See RDV Valve Operation, below.
Outdoor temperature too low.
Check Reheat2 Circuit Limit Temperatures
(Configuration
HMZR
RA.LO and RB.LO) using
ComfortLink Scrolling Marquee.
Summary of Contents for WeatherMaster Puron 48HC D17
Page 18: ...18 COOLING CHARGING CHARTS Fig 22 Cooling Charging Chart 15 Ton ...
Page 19: ...19 Fig 23 Cooling Charging Chart 17 5 Ton ...
Page 20: ...20 Fig 24 Cooling Charging Chart 20 Ton ...
Page 21: ...21 Fig 25 Cooling Charging Chart 25 Ton ...
Page 37: ...37 Fig 48 Unit Control Box IGC Location IGC Board IGC Board Side view Front view ...
Page 40: ...40 Fig 51 Typical IGC Wiring Diagram ...
Page 46: ...46 Fig 57 RTU Open Overlay for Economizer Wiring ...
Page 47: ...47 Fig 58 VFD Overlay for W2770 Controller Wiring ...
Page 84: ...84 Fig B 48HC D17 D28 Control Diagram 208 230 3 60 460 575 3 60 ...
Page 85: ...85 Fig C 48HC D17 D28 Power Diagram 208 230 3 60 ...
Page 86: ...86 Fig D 48HC D17 D28 Power Diagram 460 3 60 ...
Page 87: ...87 Fig E 48HC D17 D28 Power Diagram 575 3 60 ...
Page 88: ...88 Fig F 48HC D17 D28 Control Diagram with Humidi MiZer System ...
Page 89: ...89 Fig G 48HC D17 D28 Power Diagram 208 230 3 60 with Humidi MiZer System ...
Page 90: ...90 Fig H 48HC D17 D28 Power Diagram 460 3 60 with Humidi MiZer System ...
Page 91: ...91 Fig I 48HC D17 D28 Power Diagram 575 3 60 with Humidi MiZer System ...
Page 92: ...92 Fig J PremierLink System Control Wiring Diagram 50HE500891 F ...
Page 93: ...93 Fig K PremierLink System Control Wiring Diagram with Humidi MiZer System ...
Page 94: ...94 Fig L RTU OPEN Wiring Diagram ...
Page 95: ...95 Fig M RTU OPEN Wiring Diagram with Humidi MiZer System ...
Page 97: ......