Lochinvar WH 55-399 operation manual Ratings, Knight Wall Mount Boiler Ahri Rating

Ratings

A

Installation & Operation Manual

SME

H

Knight Wall Mount Boiler

AHRI Rating

		Input			Heating	Net
Model Number					Capacity	AHRI	AFUE
		MBH			MBH	Ratings	%
Note: Change		(Note 5)				Water,
“N” to “L” for						MBH
L.P. gas models.
	Min		Max		(Note 2, 8)	(Note 3, 8)	(Note 1, 8)
WHN055	11		55	51		44	96
WHN085	17		85	79		69	96
WHN110	22		110	102		89	96
WHN155	31		155	144		125	96
WHN199	40		199	186		162	96
WHN285	57		285	265		230	96
WHN399	80		399	379		330	95

Other Specifications

			Vent/Air
Boiler Water	Water	Gas	Size
Content
	Connections	Connections
Gallons
			(Note 4)
2.5	1"	1/2"	2"
2.5	1"	1/2"	2"
3.5	1"	1/2"	3"
3.5	1"	1/2"	3"
5.0	1 1/4"	1/2"	3"
5.0	1 1/4"	1/2"	3"
6.5	1 1/2"	3/4"	4"

NOTICE	Maximum allowed working pressure is located on the rating plate.
Notes:		7. The Knight Wall Mount boiler input rate, on some models,
		is reduced for vent lengths beyond the minimum. Two inch
1. As an Energy Star Partner, Lochinvar has determined that
		vent will reduce Models WH(N,L) 055, WH(N,L) 085 and
Knight wall mount boilers meet the Energy Star guidelines
		WH(N,L)110 by 0.6%, 0.94%, and 1.2% for every 10 feet
for energy efficiency.
		of vent. Three inch vent will reduce Models WH(N,L)155,
2. The ratings are based on standard test procedures prescribed
		WH(N,L)199 and WH(N,L) 285 by 0.3%, 0.5%, and 0.6%
by the United States Department of Energy.		for every 10 feet of vent. Four inch vent will reduce Model
3. Net AHRI ratings are based on net installed radiation of		WH(N,L) 399 by 0.4% for every 10 feet of vent.
sufficient quantity for the requirements of the building		8. Ratings have been confirmed by the Hydronics Section of
and nothing need be added for normal piping and pickup.		AHRI. Model 399 has a thermal efficiency rating.
Ratings are based on a piping and pickup allowance of 1.15.		9. Knight wall mount boilers comply with the requirements
4. Knight wall mount boilers require special gas venting. Use		of CSD-1 Section CW-400 requirements as a temperature
only the vent materials and methods specified in the Knight		operation control. The manual reset high limit provided
Wall Mount Installation and Operation Manual.		with the Knight wall mount boiler is listed to UL353.
5. Standard Knight wall mount boilers are equipped to operate
from sea level to 4,500 feet only with no adjustments. The
boiler will de-rate by 4% for each 1,000 feet above sea level
up to 4,500 feet.
6. High altitude Knight wall mount boilers are equipped		UNIT EQUIPPED FOR
to operate from 3,000 to 12,000 feet only with no field		HIGH ALTITUDE
adjustments. The boiler will de-rate by 2% for each 1,000		3,000FT TO 12,000FT
feet above 3,000 feet. High altitude models are manufactured
with a different control module for altitude operation, but
the operation given in this manual remains the same as the
standard boilers. A high altitude label (as shown in FIG. A)
is also affixed to the unit.

6 Figure A High Altitude Label Location