Service Handbook

4 • Condensing Models: On-Demand Water Heater Service Handbook
BASICS
Table 1: 140 (T-H3M) Direct Vent Indoor and Outdoor*
Model
140 lndoor
(T-H3M-DV)
140 Outdoor
(T-H3M-OS)
Natural Gas Input
(Operating Range)
BTU/h
Min.: 15,000
Max.: 120,000
Propane Input
(Operating Range)
BTU/h
Min.: 15,000
Max.: 120,000
Gas Connection 1/2” NPT
Water Connection 3/4” NPT
Water Pressure* psi (MPa) 15 - 150 (0.1 - 1.0)
Natural gas lnlet Pressure inch W.C. (kPa)
Min. 5.0 (1.2)
Max. 10.5 (2.6)
Propane lnlet Pressure inch W.C. (kPa)
Min. 8.0 (2.0)
Max. 14.0 (3.5)
Manifold
Pressure**
Natural Gas inch W.C. (kPa)
Min. 1.3 (0.32)
Max. 3.3 (0.82)
Min. 1.3 (0.31)
Max. 2.0 (0.50)
Propane inch W.C. (kPa)
Min. 1.1 (0.28)
Max. 3.0 (0.75)
Min. 1.1 (0.27)
Max. 1.6 (0.40)
Weight lbs. (kg) 50 (22.5) 50 (22.5)
Dimension
inch H 21·3/4 x W 14 x D 9·1/4
mm H 552 x W 352 x D 236
Ignition Electric Ignition
Electric
Supply VAC/ Hz 120/60
Consumption
Operation W/A 53.9/0.7
Standby W/A 3.2/0.05
Freeze-
Protection
W/A 223.9/1.94
* 40 psi (0.27 MPa) or above is recommended for maximum flow.
** The Manifold Pressure is the factory setting and should not need adjustment. NOTE: Manifold Pressure readings
are taken with the front cover removed.
NOTE:
• Check the rating plate to ensure this product matches your specifications.
• ln accordance with ANSI Z21.10.3, CO emission does not exceed 400 PPM for normal input.
• The manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and
without incurring obligation.
SPECIFICATIONS