GHQ-C3201WX-FF US NG

The NRCB is the first and only combination boiler on the market that can simultaneously provide domestic and space heating for residential applications. These simultaneous capabilities are easy to control and especially beneficial for applications that do not store or deliver heat energy efficiently. A user can, for example, take a shower without worrying about experiencing a corresponding drop in room temperature.

Another industry first is the NRCB’s use of 316L stainless steel primary and secondary heat exchangers, which have higher corrosion resistance than traditional heat exchangers for increased durability and lifespan. A third flat plate heat exchanger for domestic water heating is also made of stainless steel.

It also far exceeds the toughest emissions standards. The unit’s fully modulating burner has a nitrogen-oxide emissions level of only 14 parts per million (ppm), far below the South Coast Air Quality Management District requirement of 20 ppm.

-Fuel saving performance from this unit boasts 95% thermal efficiency

-Austenite stainless steel heat exchangers allow for greater durability

-Simultaneous operation of domestic hot water and heating

-Ultra low emissions by premix burner

-Domestic Mode: 90°F to 140°F - Heating Mode: 100°F to 180°F

-Unit has a minimum of 18,000 BTU/H, maximum of 199,900 BTU/H for standard input, 18,000 BTUh to 120,000 BTUh for heating mode input

-10-year limited warranty on the heat exchanger, 5 year on parts, and 1 year labor warranty

-Flow rates of 0.4 GPM up to 11.1 GPM

Overview

Residential or Commercial	Residential Combination Boiler
Installation Location	Indoor Only
Exhaust Type	2-pipe Direct Vent (SV convertible)
Max Flow Rate	11.1 GPM
Flow Rate @ 50°F Rise	8.0 GPM
Flow Rate @ 80°F Rise
Temperature Range	90°F - 140°F DHW & (100°F - 180°F Heating)
Production Status	Active
Condensing	Yes
Minimum Activation Flow Rate	0.4
Water Quality

Freeze Protection	Yes
Freeze Protection Rating - Indoor Temp	-30°F
Freeze Protection Rating - Outdoor Temp	N/A
Recirculation Compatible ?	Yes
New Generation Model Number	N/A
Previous Name	N/A
Available Temperature Settings (with remote)	90 to 140°F (increment of 1°F)
Default Temperature Setting (without remote)	N/A
Default Temperature Program Setting Options (without remote)	N/A
Production Date Range	01/16

Technical Specs & Installation

Min Gas Input (Btu)	18000
Max Gas Input (Btu)	199900
Height (in)	27
Width (in)	18.5
Depth (in)	12.8
Weight (lbs)	95
Thermal Efficiency
Energy Factor	N/A
Afue	95.0%
Quick-Connect Compatible?	No
Cold Water Connection Size (in)	3/4
Hot Water Connection Size (in)	3/4
Gas Connection Size (in)	3/4
Power Supply	120 VAC (60 Hz)
Current Draw (A)	1.75
Exhaust Vent Diameter Requirements	2" or 3"
Exhaust Vent Material Requirements	PVC or CPVC or Polypropylene*
Max Vent Length with 1 elbow	96’ with 3" or 51’ with 2"
Vent Termination Clearances to Any Building Opening (ft)	Below = 1’, Side = 1’, or Above = 1’
Gas Supply Pressure Range	3.5-10.5" WC
Min Gas Line Size	3/4" up to 30’
Water Pressure Rating (psi)	15-150
Case Clearances (in)	Top = 12", Front = 4", Sides = 2", Back = 5/8", Below = 12"
Combustion Air Requirements - using Indoor Air	199 in² (Only if SV conversion)

Combustion Air Requirements - using Outdoor Air	100 in²(Only if SV conversion)
Head Loss at 2 gpm
Cold Connection Height
Power Consumption w/out Freeze Prevention	210 Watts
Power Consumption w/Freeze Prevention	210 Watts
Flow Meter Alarm	N/A
Service Reminder	No
Condensate Handling Method?	NC-1
Noise Rating (dB)	Less than 60 dB
Tested to UL Computer Controlled Safety Standards	Yes
Flame Sensor	Yes
High Limit Switch	Yes
Lightning Protection	Yes
Overheat Cutoff Fuse)	Yes
Temperature Lockout	Yes
Ignition Type	Direct Electronic
Case Material	Durable Steel Casing with Polyester Coating
Color/Finish	Black
Flue Collar Material	PP
Primary Heat Exchanger Material	Stainless Steel
Secondary Heat Exchanger Material	Stainless Steel
Mounting Type	Wall Hung
Package Contents	Anchoring Screws, Wall Mounting Bracket, Emergency Kit, Owner’s Guide, Warranty, Installation Manual, Quick Installation Manual, Outdoor Temperature Sensor
Water Holding Capacity	Under 2 gallons

Accessories

Keypad/Thermostat Display	Built-in
Compatible Remote Controller Part #
Isolator Valve Part #	IK-WV-200-1-xx
Freeze Protection	Yes
Freeze Protection Kit Accessory
Outdoor Vent Cap Part #	N/A
Pipe Cover Part #	PC-1S
Recess Box Part #	N/A

High Elevation Adjustment	No
Quick-Connect Cord Part #	N/A
System Controller Compatible?	No
System Controller Part #	N/A
Remote Controller Cord	N/A
Compatible Remote Controller Cord Part #	N/A
Power Cord	Included attached

Approvals

ENERGY STAR® Qualified	Yes
CSA	Yes
Mobile Home	No
NSF	No
SCAQMD (20 ppm)	Yes
SCAQMD (55 ppm)	No
UPC	No

Energy Guide - Est. Yearly Energy Use
Energy Guide - Est. Yearly Operating Cost
UPC Low Lead	NSF372
ASME (HLW)	No
ASME (H)	Yes
ASME (NB)	No

Warranty