EX 400

EX 500

EX 700

EX 800

High Efficiency Commercial Fire Tube Boiler

The Superior heating solution, perfect for all large new and retrofit projects.

 

Touchscreen Control
  • Express setup – program your boiler in seconds with remote monitoring & diagnostics
  • Precise burner modulation control
  • Easy USB programmability
  • Intuitive alert system with detailed error message
  • Vast array of performance data for troubleshooting
  • Load combining and zoning
  • Multi-boiler communication for network applications up to 24 boilers without additional controls
  • With 24 networked boilers turndown ratio is 240:1
  • End switch, 0-10 VCD or 4-20mA control compatible
  • Full BACnet capability included
  • Primary pump and zone pump controller – up to 4 zones

 

Built-in Features
  • Unparalleled build quality
  • Turndown ratio of 10:1 means you have the power to heat the building in the coldest weather, yet reduce short cycling when the weather is mild   
  • MFZ Moisture management protocol
  • Reverse flow detection
  • Outdoor reset control of water temperature
  • CSA/UL approved low water cut-off and manual reset high limit
  • CSD-1 Compliant
  • Unmatched safety features 

 

Superior Heat Exchanger
  • The most advanced stainless steel fire tube boiler on the market today
  • High grade 439 stainless steel construction
  • Innovative saddle-bolt lit hardware
  • Better thermal efficiency – up to 97% 
  • Condensed flue gasses clean vertical flue tubes while draining 
  • Custom water flow baffling to ensure even heat transfer and long life

 

Easy to Install & Service
  • PVC/CPVC/PP/SS venting materials approved
  • Direct vent lengths – up to 170’ each side
  • Available in either NG or LP factory set or field convertible 
  • Open access to heat exchanger and all internal components

 

SPECIFICATIONSEX 400EX 500EX 700EX 850
CSA Input (Natural Gas or Propane) – MBH 40 – 39950 – 50070 – 70085 – 850
CSA Input (Natural Gas or Propane) – kW 11.7 – 11714.6 – 146.520.5 – 20524.9 – 249
CSA Output (Natural Gas or Propane) – MBH 388485679824.5
CSA Output (Natural Gas or Propane) – kW 114142199241.6
Thermal Efficiency97.90%97.50%97.00%97.00%
Min Gas Supply Pressure (Nat. Gas or Propane) – inch w.c. 4444
Max Gas Supply Pressure (Nat. Gas or Propane) – inch w.c. 14141414
Ambient Temperature – Low  (F/C)32° / 0° 32° / 0° 32° / 0° 32° / 0° 
Ambient Temperature – High (F/C)122° / 50° 122° / 50° 122° / 50°122° / 50° 
Max relative humidity (non-condensing)90%90%90%90%
Min water Temperature  (F/C)34° / 1° 34° / 1° 34° / 1° 34° / 1° 
Max water Temperature – (electronic high limit) (F/C)190° / 88° 190° / 88°190° / 88° 190° / 88° 
Max. ∆T – supply/return (electronic fence) (F/C)80° / 44° 80°/ 44°80°/ 44°80° / 44° 
Max. Water Temperature Lockout Limit (F/C)201° / 94° 201° / 94° 201° / 94° 201° / 94° 
Power (120Vac/60Hz) @ full fire – watts (without pumps)150210195228
Weight (empty) – lbs/Kg 414 / 188441 / 200486 / 202510 / 231
Heating Surface Area ft² / m²55.3 / 5.1472.9 / 6.7784.6 / 7.8699.88 / 9.28
Pressure Vessel water content – USG/Liters 13.5 / 5112.3 / 46.717.5 / 66.316.5 / 62.3
Max boiler flow rate – USgpm 100100100100
Min boiler flow rate – USgpm 10151821
Max Operating Water Pressure – psig *160160160160
Min Operating Water Pressure – psig 8888
Relief valve pressure – psig50505050
Approved installation altitude  (Ft)12,00012,00012,00012,000
Max equivalent vent length (each side) 170’170’120’120’

CONNECTIONS

ConnectionEX 400 / EX 500EX 700 / EX 850
Flue Outlet4” Schedule 406” Schedule 40
Combustion Air Inlet4” Schedule 404” Schedule 40
Water Outlet2” NPT-M2 1/2” NPT-M
Water Inlet2” NPT-M2 1/2” NPT-M
Knock-outs (8)1/2”1/2”
Gas Inlet1” NPT-F1” NPT-F
Condensate Outlet3/4” Hose3/4” Hose
 
CLEARANCE FROM THE CABINET
SurfaceDistance from combustible surfacesRecommended distance for installation and service
Front2”30”
Rear flue connection2”24”
Left side1”2” 
Right side1”4”
Top6”12” (required for filter replacement
Bottom0”0
 
VENTING
VENTINGMaximum equivalent length 
Sched.40; Rigid PPsEX 400 / EX 500EX 700 / EX 850
4”170’ (each side)N/A
6”N/A120’ (each side)
90° Vent Elbowallow 5’ equivalentallow 5’ equivalent
45° Elbowallow 3’ equivalentallow 3’ equivalent
PPs 87-90° Elbowsuse 5’ equivalentuse 5’ equivalent