Brochure

20
Installation Type Indoor, Outdoor, Direct Vent
Dimension 20-1/4" (H) X 13-3/4" (W) X 9-1/2" (D) , Weight:39 lbs
Electric 120 V 82 W / 0.86 A (Operation) 7 W / 0.09 A (Standby) 132 W / 1.1 A (Freeze-Protection)
Ignition Electronic Ignition
Noise Level IN: 54 dB OS: 58 dB at Max output
Fuel NG
Gas Consumption
Min. Input 15,000 BTU/h
Max. Input 199,000 BTU/h
Energy Factor 0.82
Gas Pressure
Min 5.0" W.C.
Max 10.5" W.C.
Flow Rate 10.0 GPM
Values based on factory testing. 0.4 GPM required for continuous fire after initial
ignition
Hot/Cold/Gas
Connection
3/4" NPT
Coil Capacity ≈0.2 Gallons
Water Pressure 15-150 PSI
Pressure Only Relief Valve Requires (Min 200,000 BTUs. 150 PSI).
40 psi or above recommended for max. flow
Multiple Unit
Installation
Easy-Link System Up to 4 units With no need for a system controller
Multi-Unit System Up to 20 units Multi-Controller (9008300005)
D2U
Temperature Settings
Dipswitches 120°F (default) 140°F
With 9009069005 remote (max. distance 400’ from heater, non-polarized 120 gauge wiring.)
100°F to 160°F (13 options), 120°F Default Factory Setting
Clearances to Combustible and
Non-Combustible Surfaces
Warranty Information**
Residential Use:
15 Years limited heat exchanger,
5 Years limited parts
Commercial Use:
10 Years limited heat exchanger,
5 Years limited parts
**Refer to www.takagi.com for further warranty
details.
Thicker heat exchanger drum and utilizes
commercial-grade copper (heat-resistant)
copper for the heat exchanger tubing.
Provides a variety of installation options:
indoor, outdoor, and direct vent. Complies
with SCAQMD Rule 1146.2 and other air
quality management districts with similar NOx
Emission requirements of 14 ng/J or 20 PPM.
Easy-Link System capable up to 4 units. Multi-
Link system capable up to 20 units.
Indoor
Installations
Outdoor
Installations
510: Pressure Loss
Flow Rate (gpm)
Set temperature: 130°F or lower
Set temperature: 135°F or higher
Head (ft)
100
110
120
70
60
90
80
50
40
30
10
20
0
8.0 10.06.0402.00.0
50
45
40
35
30
25
20
15
10
5
0
D2U: Flow Rate vs. Temperature Rise
D2U: Pressure Loss
T-D2: Flow Rate vs. Temperature Rise
Set temperature: 130°F or lower
Set temperature: 135°F or higher
140120100806040200
12
10
2
4
6
8
0
Flow Rate (gpm)
Temperature Rise (°F)
Specifications
Clearance
Indoor models include both a remote control and
power cord as standard features.
Outdoor models include remote control as a
standard feature.
Side 3
Side 3
Side 3
Side 3
Front 4
(Recommended 24
“
for maintenance)
Side 3
Side 3
Side 3
Side 3
Front 4
(Recommended 24
“
for maintenance)