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12
scale build-up throughout the system. Water below 5 grains/
gallon (85 mg/L) may be over softened.
• Consult local water treatment companies for unusually
hard water areas (above the required amounts) or for other
treatment solutions if water is being over softened (below 5
grains/gallon [85 mg/L]).
•
Chloride concentration less than 100 ppm (mg/L)
• Do not fill appliance or operate with water containing
chlorides in excess of 100 ppm (mg/L).
• Using chlorinated fresh water should be acceptable as levels
are typically less than 5 ppm (mg/L).
• Do not connect the appliance to directly heat swimming
pool or spa water.
POWER SWITCH
Q
ACCESS PANEL
(ALL MODELS)
(CONTROL BOARD)
COLD WATER
INLET
A
B
C
D
E
F
MODEL
A
14-3/4"
500
20"
700
20"
850
20"
NOTE: ALL DIMENSIONS ARE APPROXIMATE AND HEIGHTS DO NOT INCLUDE ADJUSTABLE LEGS.
BTU/HR
MODEL
INPUT
RANGE
500
100,000 - 500,000
700
170,000 - 700,000
850
170,000 - 850,000
Figure 5 - Boiler Dimensions - NOTE: All Dimensions Are Approximate - VWH in Model Number Denotes Volume Water Heater Model
whl-445 Rev. 000 Rel. 014 Date 7.21.20
FRONT
(ALL MODELS)
DISPLAY PANEL
J
H
HOT WATER
RIGHT SIDE
OUTLET
ACCESS PANEL
(ELECTRICAL)
CONDENSATE
DISCHARGE
GAS LINE
B
C
D
E
F
6-1/4"
13-1/4" 14-1/2" 33-1/4" 5-1/8" 20-1/2"
20"
6-1/4"
16-1/4" 18-3/4" 43-1/2"
20"
6-1/4"
16-1/4" 18-3/4" 43-1/2"
Gross
Net I=B=R
Thermal
Output
BTU/hr
Efficiency
BTU/hr
470,000
408,900
686,000
596,820
799,000
695,130
•
Total Dissolved Solids (TDS) less than 500 ppm (mg/L)
• Total dissolved solids are minerals, salts, metals, and
charged particles that are dissolved in water.
• The greater the amounts of TDS present, the higher the
corrosion potential due to increased conductivity in the
water.
• If using softened water to fill the appliance, it is still
possible to have high TDS. This water can be corrosive.
Consult local water treatment companies
treatment solutions to reduce this effect.
*NOTE: It is recommended to clean the heat exchanger at least
once a year to prevent lime scale buildup. To clean the heat
exchanger, follow the maintenance procedure in this manual.
REAR
(ALL MODELS)
AIR INTAKE
G
G
H
J
K
L
36" 43-3/4"
46"
20"
20-1/2"
36" 62-1/4" 68-1/2"
20"
20-1/2"
36" 62-1/4" 68-1/2"
Boiler
Supply/Return
Gas
Water
Connection
Conn.
94%
4.2 gal.
2"
1-1/2"
98%
5.8 gal.
2"
2"
94%
5.8 gal.
2"
2"
EXHAUST
P
R
LEFT SIDE
(ALL MODELS)
L
M
M
N
O
P
48"
8-1/4"
25-1/2" 10-1/2"
73"
8-1/4"
25-1/2" 10-1/2"
73"
8-1/4"
25-1/2" 10-1/2"
High
Low
Vent
Ship.
Fan Speed
Fan
Fan
Dia.
Wt.
at Ignition
Speed
Speed
4"
505
7200
1950
6"
580
5700
2200
6"
580
6800
2200
for other
O
N
K
Q
R
5"
3"
5"
3"
5"
3"
3000
3000
LP-445-C
11/30/18
3000
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