Nieco 850 Installation Manual

Job:

XFyre™ - Type WH

Engineer:

Contractor:

Prepared By: Date:

Model: Indoor/Outdoor:

95% Thermal Efficiency at Full Rate, Up to 99% at Part Load

Indoor/Outdoor Construction Standard

PVC, CPVC, or Stainless Venting Certified

Soft Start, Electronic Modulation, 5:1 Turndown

LCD Status Display and Full Diagnostics and Fault Memory

Footprint: Less Than 8-1/3 ft

Zero Clearance to Combustibles

Meets NOx Requirements Thru 2012 (< 20 ppm)

Maximum Outlet Water Temperature: 175°F

Maximum System Temperature: 175°F

Limited 25 Year Thermal Shock Warranty

Limited Five-Year Heat Exchanger Warranty

Heat Exchanger

 All Stainless Steel Construction with

Copper Connections

 Gasketless Heat Exchanger Design  ASME H Stamped

160 PSIG Working Pressure

 National Board Approved  ASME Pressure Relief Valve

125 PSIG – Standard PSIG – Optional

 Temperature and Pressure Gauge,

Shipped Loose

Control

 120V, 60Hz, 1Ø, Power Supply  Digital Operating Control with LCD

display.

 0-10 VDC input for BMS  Cascade up to 8 water heaters  Spark Ignition (DSI)  Remote Flame Sensor  High Limit, Manual Reset, Fixed,

175ºF

 Auto Limit, Fixed, 200ºF  Alarm Dry Contact Connection  On/Off Power Switch  Flow Switch  Blocked Vent Pressure Switch  Boiler, DHW & System Pump

Contacts

 Water Temperature Sensors (3)

Burner

 Ultra-Low NOx: Less than 20 PPM

Gas Train

 Fuel

Natural Gas Propane

 Zero Governor Regulator  Dual-Seat Combination Valve  Electronic Modulating Firing Mode

(WH7)

Construction

 Indoor/Outdoor Construction  Front Controls Enclosed  PolyTuf Powder Coat Finish  Rear Connections (Electrical, Gas, Vent,

Combustion Air)

 Top Connections (Water)  Design Certified ANSI Z21.10.3/

CSA 4.3

 Combustion Air Filter  Condensate Trap

Venting (PVC-CPVC-Stainless)

 Vent Termination

Indoor, Vertical – Option D-11 Indoor, Horizontal – Option D-15 Outdoor

 Extractor - Optional

By others Not required

Condensing Water Heaters

Models 300-850

Proudly Made in the USA

Multi-Boiler System Controllers

B-36 TempTracker Mod+ Hybrid Digital

Controller, 2-4 water heaters

B-37 TempTracker Mod+ Hybrid Digital

Controller, 5-10 water heaters

B-38 TempTracker Mod+ Hybrid Digital

Controller, 11-16 water heaters

Options

D-21 TruSeal™ Combustion Air Inlet

(Mounted)

D-22 TruSeal™ Combustion Air Inlet

(Loose)

P- Pump: HP, 120V, 1∅,

60Hz

Bronze/SS

S-1/S-2 High/Low Gas Pressure

Switches, Manual Reset

Z-12 Condensate Neutralizer Kit

Regulatory Agency Requirements

Catalog No.: 3500.17B Effective: 11-02-10 Replaces: 12-15-09

XFyre – Type WH

Models 300-850 Model

CLEARANCES

Front 24” 24” Rear 24” 24” Right 0” 0” Left 0” 0” Top 12” 24” Floor 0” -Vent 1” --

Certified

Minimum

Service

Minimum

Model

(WH7-)

MBTUH Dimensions (in.)

C/A

Input Output

Length

MountingG NPT H NPT

Flue

Ship

Weight

(Lbs.)

Foot-

(Ft

Amps*

)

300 300 285 28-1/4 16-1/2 27-9/16 3/4 1-1/2 4 4 3 410 4.3 3 400 399 379 30-3/4 16-1/2 29-3/4 1 2 4 4 3 465 4.7 4 500 500 475 37-1/4 16-1/2 36-1/4 1 2 4 4 3 505 5.7 4 700 700 665 47-3/4 28 47-1/16 1-1/4 2 6 6 19-3/8 550 7.3 5 850 850 808 54-1/4 28 53-9/16 1-1/4 2 6 6 19-3/8 580 8.3 5

Ratings shown are for elevations up to 2,000 feet. For installations at elevations above 2,000 feet, please consult the factory for additional instructions.

Catalog No.: 3500.17B Effective: 11-02-10 Replaces: 12-15-09

* Current draw is for heater only.

(Supply breaker must have delayed trip.)

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