Takagi T-K3 Service Manual

T-K3 Service Manual
Ver. 1.05
44
CONFI DENTIAL
Description of mode numbers in “Diagnostics Mode”
Mode # Whole multi-unit system inf ormation (#0) Indiv idual T-K3 unit information (#1 to #4)
1 Total system flow rate 0 - 999 (×0.1 GPM) Total operation time 0 to 9999 (hours)
2 ON/OFF cycles 0 to 9999 (×100 cycles) ON/OFF cycles 0 to 9999 (×100 cycles)
3 Quantity of connected
T-K3’s
2 - 4 (units) Fan motor speed 0 to 9999 (rpm)
4 Priority T-K3 unit 1 - 4 (unit #) Inlet temperature 32 to 210 (ºF).
Ov er 210ºF=E5, under 32ºF=E0
5 Quantity of operational
T-K3’s
1 - 4 (units) Outlet temperature 32 to 210 (ºF)
ov er 210ºF=E5, under 32ºF=E0
6 Output set temperature 99 to 185 ºF Mixing temperature 32 to 210 (ºF)
ov er 210ºF=E5, under 32ºF=E0
7 Operation time during
current rotation
0 to 720 (minutes). After
720, the next rotation
occurs
Air-Fuel ratio rod
current
0 to 999 (
×0.1μA)
8 ON/OFF cycles during
current rotation
0 to 100 (cycles). After
100, the next rotation
occurs
Flow rate 0 to 999 (
×0.1 GPM)
9 N / A By pass v alve position 0 to 999, fully closed position=0
A N / A
Ratio of hot water and
cold water
0 to 999 (×0.1%)
B N / A Error code history: displays most recent error code
C N / A Error code history: displays 2
nd
most recent error code
D N / A Error code history: displays 3
rd
most recent error code
E N / A Clears memory in error code history
F N / A N / A
0 N / A Air-Fuel ratio stage 0 to 15, normal condition=6

Takagi T-K3 Specifications

General

Type	Tankless
Installation Type	Indoor
Maximum BTU Input	199, 000 BTU/h
Gas Connection Size	3/4"
Vent Size	3"
Hot Water Flow Rate (at 35°C rise)	6.6 GPM
Maximum Input	199, 000 BTU/h