Brochure

- Modulation down to 20% of full fire (5:1 turndown)
- Sealed combustion chamber
- Pre-mix stainless steel burner
- Burner site glass
- Low NOx system exceeds the most stringent
regulations for air quality - 10 ppm NOx
- Horizontal or vertical direct vent
- Vent and air pipe lengths of up to 100 equivalent
feet (each)
- Built-in condensate trap
- Vent temperature cutoff
- Direct spark ignition system
- Stainless steel heat exchanger with welded
construction
- ASME “H” stamp
- 75 psi (517 kPa) ASME rated pressure relief valve
for the KS 399, KS 500, KS 600, KS 750 and KS 850
- 125 psi ASME rated pressure relief valve (for the
KW 199, KW 285, KW 399 and KW500)
- Water flow switch (KW 399 only)
- Temperature & pressure gauge
- Drain valve
- Multiple pump control for boiler pump, system pump
and indirect domestic water pump, each with delay
Boiler Specific features
- Indirect water heater priority
- Sensor for indirect domestic water heater
- Outdoor reset
- Outdoor air temperature sensor
- Electronic PID modulating control stages up to
eight boilers
- Large user-interface and display
- Alarm output
- Accepts (4-20mA or 0-10V) modulation control
- Manual reset high limit
- Zero clearance to combustibles
- 10 year limited warranty (for the KS 399, KS 500,
KS 600,KS 750 and KS 850) or 5 year limited warranty
(for the KW 199, KW 285, KW 399 and KW 500 )
- Floor-standing appliance
- All connections are on top of the unit
- Easy to service
- Works with BAS
- Water Heaters Meet AB1953 standard
- 500 - 850 Boilers are CSD-1 Compliant
Standard Equipment & features
2011-73 Keystone Lit. 020612
p
f
Blackwood NJ 08012
One Triangle Lane
www.triangletube.com
856.228.3584
856.228.8881
Technical Specifications
Company
An
Model
Input
BTU/h
Output
BTU/h
Thermal
Efficiency %
Combustion
Efficiency %
285,000
399,000
272,460
KW 285
193,030
KW 199
399,000
96.5
375,000
KS 399
199,000
374,237
KW 399
500,000
95.0
475,000
KS 500
600,000
95.3
572,000
KS 600
750,000
96.6
724,000
KS 750
850,000
95.7
96.5
95.0
96.0
96.6
95.7
813,000
KS 850
95.6
97.0
N/A
N/A
N/A
96.3
500,000
483,500
KW 500
N/A
96.7
Model
Water
Heaters
Boilers
Water
Heaters
Boilers
Connections Size (NPT)
Gas
Water
Air Inlet
Diameter
Vent
Diameter
Dimensions
D x W x H
Weight
Lbs
2"
2"
4"
4"
3"
4"
4"
3"
276
3/4"
26"x 24 1/2" x 38”
KW 285
246
1/2"
26"x 24 1/2" x 38”
KW 199
1 1/4"
4 "
346
3/4"
31"x 24 1/2" x 38”
KS 399
1 1/4"
346
3/4"
31"x 24 1/2" x 38”
KW 399
2"
4"
4"
381
1"
31"x 24 1/2" x 38”
KW 500
1 1/2"
4 "
381
1"
37"x 24 1/2" x 38”
KS 500
1 1/2"
4 "
394
1"
38"x 24 1/2" x 38”
KS 600
2"
4 "
469
1 1/2"
51"x 24 1/2" x 38”
KS 750
2"
4 "
4"
4"
4"
6"
6"
502
1 1/2"
55"x 24 1/2" x 38”
KS 850