Bryant 580J*04--12 appendix Troubleshooting Heating System, cont. - Altitude Compensation* A08-A12

Table 11 (cont.) - Altitude Compensation* (A08-A12)

ELEVATION		125,000		250,000		180,000, 224,000
		BTUH Nominal		BTUH Nominal		BTUH Nominal
ft (m)		NG Orifice	LP Orifice	NG Orifice	LP Orifice	NG Orifice	LP Orifice
		Size	Size	Size	Size	Size	Size
0 --- 2000 (610)		311	493	†30	463	311	483
2000	(610)	321	503	†30	473	321	493
3000	(914)	321	503	311	473	321	493
4000 (1219)		331	503	311	483	331	493
5000 (1524)		331	514	311	483	331	503
6000 (1829)		341	514	311	483	341	503
7000 (2134)		351	514	321	493	351	503
8000 (2438)		361	524	331	493	361	514
9000 (2743)		372	524	341	503	372	514
10000	(3048)	382	524	351	503	382	524
11000	(3353)	392	534	361	514	392	524
12000	(3658)	†41	534	372	514	†41	534
13000	(3962)	†42	544	382	524	†42	534
14000	(4267)	†43	544	†40	534	†43	544

Table 12 – Altitude Compensation* (04-06) - Low NOx Units

ELEVATION		60,000, 90,000		120,000
		BTUH Nominal		BTUH Nominal
ft (m)
		NG Orifice Size	LP Orifice Size	NG Orifice Size	LP Orifice Size
0 --- 2000 (610)		382	534	321	503
2000	(610)	392	544	331	514
3000	(914)	†40	544	341	514
4000 (1219)		†41	544	351	514
5000 (1524)		†41	544	351	514
6000 (1829)		†42	544	361	524
7000 (2134)		†42	544	361	524
8000 (2438)		†43	554	372	524
9000 (2743)		†43	554	382	534
10000	(3048)	442	554	†40	534
11000	(3353)	442	554	†41	534
12000	(3658)	452	†56	†42	544
13000	(3962)	473	†56	†43	544
14000	(4267)	483	†56	†43	554

LEGEND:
NG = Natural Gas LP = Liquid Propane	1 = CRLPELEV001A00
* As the height above sea level increases, there is less oxygen per cubic	2 = CRLPELEV002A00
ft. of air. Therefore, heat input rate should be reduced at higher altitudes.	3 = CRLPELEV003A00
{ Not included in kit. May be purchased separately through dealer.	4 = CRLPELEV004A00

580J

Minimum heating entering air temperature

When operating on first stage heating, the minimum temperature of air entering the dimpled heat exchanger is 50_F continuous and 45_F intermittent for standard heat

setpoint. Indoor comfort may be compromised when heating is initiated using low entering air temperatures with insufficient heating temperature rise.

Thermostat LCTB

exchangers and 40_F continuous and 35_F intermittent for stainless steel heat exchangers. To operate at lower mixed-air temperatures, a field-supplied outdoor-air thermostat must be used to initiate both stages of heat when the temperature is below the minimum required temperature to ensure full fire operation. Wire the outdoor-air thermostat (part no. HH22AG106) in series with the second stage gas valve as shown below. Set the outdoor-air thermostat at 35_F for stainless steel heat

TH1

TH2

W1

OALT

W2

C08442

exchangers or 45_F for standard heat exchangers. This temperature setting will bring on the second stage of heat whenever the ambient temperature is below the thermostat

Troubleshooting Heating System

Refer to Table 13 and Table 14 for additional troubleshooting topics.

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