User Guide
4 Page
Model
110
Indoor
110
Outdoor
310
Indoor
310
Outdoor
510
Indoor
510
Outdoor
Natural Gas Input
(Operating Range)
BTU/h
Min.: 19,500
Max.: 140,000
Min.: 11,000
Max.: 190,000
Min.: 11,000
Max.: 199,000
Propane Gas Input
(Operating Range)
BTU/h
Min.: 19,500
Max.: 140,000
Min.: 11,000
Max.: 190,000
Min.: 11,000
Max.: 199,000
Gas Connection 3/4" NPT
Water Connections 3/4" NPT
Water Pressure*
psi
(Mpa)
15 - 150* (0.1 - 1.0)
Natural gas
Inlet Pressure
" W.C.
(kPa)
Min. 4.0 (1.00)
Max. 10.5 (2.61)
Propane gas
Inlet Pressure
" W.C.
(kPa)
Min. 8.0 (1.99)
Max. 14.0 (3.48)
Weight lbs. (kg) 33 (15.0) 38 (17.2) 39 (17.7)
Dimensions
inch
H 20.5 x W 13.8 x D 6.7 H 20.5 x W 13.8 x D 8.5
mm
520 (H) x 351 (W) x 170 (D) 520 (H) x 351 (W) x 216 (D)
Ignition Electric Ignition
Electric
Supply VAC / Hz 120 / 60
Consumption
Operation W / A 73.1 / 0.61 87.6 / 0.73 89.8 / 0.75
Standby W / A 6.2 / 0.05 6.2 / 0.05 6.2 / 0.05
Freeze-
Protection
W / A 111 / 0.93 111 / 0.93 111 / 0.93
Water heater category**
Category
III
N/A
Category
III
N/A
Category
III
N/A
SPECIFICATIONS
Specicaons
Installaon Manual
*40 psi or above is recommended for maximum flow.
**Water heater Category — water heaters of other than direct vent type, for outdoor installation, are divided into four
categories based on static pressure produced in the vent and flue loss.
Category I - a water heater that operates with a non-positive vent static pressure and with a vent gas temperature
that avoids excessive condensate production in the vent.
Category II - a water heater that operates with a non-positive vent static pressure and with a vent gas temperature
that may cause excessive condensate production in the vent.
Category III - a water heater that operates with a positive vent static pressure and with a vent gas temperature that
avoids excessive condensate production in the vent.
Category IV - a water heater that operates with a positive vent static pressure and with a vent gas temperature that
may cause excessive condensate production in the vent.
NOTE:
The manufacturer reserves the right to discontinue, or change at any time, specifications or designs
without notice and without incurring obligation.