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5
Xtremely Small Footprint
Ratings shown are for elevations up to 10,000 feet. For installations at elevations above
2,000 feet, derate may apply, please consult the factory for additional instructions.
Front 24” 24”
Rear 24” 24”
Right 0” 0”
Left 0” 0”
Top 12” 24”
Floor 0” ---
Vent 1” ---
C e r t i f i e d
M i n i m u m
Service
Minimum
*Do not install on carpeting
Note: Local codes may require increased clearances
Heater
Side
Note: Current draw (Amps) is for pump only
Water hardness grains per gallon
Soft = 0-4 • Medium = 5-15 • Hard = 16-25
Water above 15gpg requires water softener.
Model
MBTUH
Input
Boiler
Output Efficiency
Water Heaters
Output Efficiency
MBTUH
Input
Minimum
Input
300 300 282 94% 300 285 95% 60
400 399 375 94% 399 379 95% 80
500 500 470 94% 500 475 95% 100
700 700 658 94% 700 665 95% 140
850 850 799 94% 850 808 95% 170
Model
Dimensions (in.)
A
Length
Amps*
3 0 0 28 - 1/4 16 - 1/2 27 - 9/16 3 / 4 1 - 1/2 4 4 3 4 1 0 4 . 3 3
4 0 0 30 - 3/4 16 - 1/2 29 - 3/4 1 2 4 4 3 4 6 5 4 . 7 4
5 0 0 37 - 1/4 16 - 1/2 36 - 1/4 1 2 4 4 3 5 0 5 5 . 7 4
7 0 0 47 - 3/4 2 8 47 - 1/16 1 - 1/4 2 6 6 19 - 3/8 5 5 0 7 . 3 5
8 5 0 54 - 1/4 2 8 53 - 9/16 1 - 1/4 2 6 6 19 - 3/8 5 8 0 8 . 3 5
Foot-
Print
(ft
2
)
Ship
Weight
(lbs.)
E
F
Mounting
G
NPT
H
NPT
K
Flue Ø
T
C/A
Ø
V
300 1/8 1.3 1/4 5.7
400 1/8 1.3 1/2 6.9
500 1/4 5.7 1/2 6.9
700 1/2 6.9 1 14.0
850 1/2 6.9 1 14.0
Soft
Water Heater Pump Sizes
HardMedium
HP Amps HP AmpsHP Amps
XFyre
Model
*Current Draw is for heater only.
(Supply breaker must have delayed trip.)
Do not use when
hardness
exceeds
15 grains per gallon