Takagi T-H3-DV - Freeze Protection System; Flow Rates

SERVICE PROCEDURES
On-Demand Water Heater Service Handbook for 240, 340 & 540 Condensing Models • 47
Table 18.
Mode # Whole Mul-Unit System informaon (#0) Unit informaon (#1 to #4)
1 Total system flow rate 0 to 999 (GPM) Total operaon me 0 to 999 (x 100 hours)
2
BTU requirement for
the Mul-System
0 to 999 (×kBTU/h) ON/OFF cycles
0 to 999
(× 1,000 cycles)
3
Quanty of connected
water heaters
1 to 4 (units) Fan motor speed 0 to 999 (× 10 rpm)
4
Priority water heater
unit
1 to 4 (unit #) Inlet temperature
32 to 212 (°F)
Over 212 °F = E5,
Under 32 °F = E0
5
Quanty of
operaonal water
heaters
0 to 4 (units)
Heat exchanger
temperature (540
(T-H3) model only)
6 Set temperature 100 to 185 °F Outlet temperature
7
Operaon me during
current rotaon
0 to 720 (minutes)
Aer 720, the next
rotaon occur
s
Air-Fuel
rao rod
current
0 to 999 (μA)
8
ON/OFF cycles during
current rotaon
0 to 100 (cycles)
Aer 100, the next
rotaon occurs
Flow rate 0 to 999 (× 0.1 GPM)
9
N/A
Energizaon me of
the unit
0 to 999 (× 100 hours)
10
Integrang flow of the
unit
0 to 999
(× 10,000 gallons)
11
Error code history: displays the most recent
error code
12
Inlet temperature of
the priority unit
32 to 212 (°F)
Over 212 °F = E5,
Under 32 °F = E0
Error code history: displays the 2nd most
recent error code
13
Outlet temperature of
the priority unit
Error code history: displays the 3rd most
recent error code
14
N/A
Clears the memory in error code history*
15
Integrang output of
the unit
0 to 999 MBTU/h
16 Air-fuel rao stage
0
to 16,
normal condion=6
17
Exhaust temperature
(Indoor models only)
32 to 212 (°F)
Over 212 °F = E5,
Under 32 °F = E0
18 N/A
Mode Number Descripons