Rinnai 37AHB SERIES Installation, Operation And Maintenance Manual page 18

Installation
THERMOSTAT WIRING DIAGRAMS
HEAT/COOL & COOL ONLY
THERMOSTATS
FIRST STAGE HEAT/COOL Y1
W
AUX HEATING
G
FAN
24VAC HOT R
24 VAC COMMON C
Single Stage Hydronic Furnace w/ Single Stage A
Figure 16
HEAT PUMP THERMOSTATS
FIRST STAGE HEAT/COOL Y1
W
AUX HEATING
G
FAN
RVS COOLING O
24VAC HOT R
24 VAC COMMON C
Figure 17 Single Stage Hydronic Furnace
w/ Single Stage Heat Pump
HEAT/COOL & COOL ONLY
THERMOSTATS
FIRST STAGE HEAT/COOL Y1
Y2
SECOND STAGE HEAT/COOL
W
AUX HEATING
G
FAN
24VAC HOT R
24 VAC COMMON C
Figure 18 Single Stage Hydronic Furnace w/ Two Stage A/C
HEAT PUMP THERMOSTATS
Y1
FIRST STAGE HEAT/COOL
Y2
SECOND STAGE HEAT/COOL
AUX HEATING W
G
FAN
RVS COOLING O
R
24VAC HOT
24 VAC COMMON C
Figure 19 Single Stage Hydronic Furnace
w/ Two Stage Heat Pump
18
SINGLE SPEED
SINGLE STAGE
CONDENSING
HYDRONIC FURNACE
UNIT
Y1 Y1
Y2
W
G
O
R
C C
SINGLE STAGE SINGLE STAGE
HEAT PUMP
HYDRONIC FURNACE
Y1 Y1
Y2
W
G
O O
R R
C C
TWO STAGE
SINGLE STAGE
CONDENSING
HYDRONIC FURNACE
UNIT
Y1 Y1
Y2 Y2
W
G
O
R
C C
SINGLE STAGE TWO STAGE
HEAT PUMP
HYDRONIC FURNACE
Y1 Y1
Y2 Y2
W
G
O O
R R
C C
Rinnai Corporation Hydronic Furnace (37AHB) Manual
Shunt Jumper Options:
An additional feature of the 37AHB series is its
selectable operating sequence option; the 3-pin shunt
header (P7) allows the control to operate the proper
heating logic based on the following system
requirements:
The 37AHB unit in Open Loop configuration:
"FS" Shunt selection: The "FS" logic sequence will
configure the unit for operation with all Rinnai®
Tankless Water Heaters; this logic monitors the ratio
of available flow for space heating (via Flow Sensor);
this status is then communicated to the PCB whose
operating characteristics is primarily determined by the
status of the Flow Sensor input (sequence allows
domestic priority).
WARNING
Failure to follow this warning could result in an
electrical shock, fire, or death.
To minimize personal injury if an electrical fault should
occur, cabinet grounding MUST be an uninterrupted
ground and MUST comply with NEC, ANSI/NFPA 70
and all local codes having jurisdiction. The ground
may consist of electrical wire or metal conduit when
installed in accordance with existing electrical codes.