Weil-McLain RLS dimensions Burner specifications and settings, Notes for , and Table

Weil-McLain 88 Water and Steam Boilers — Series 2 — For Gas, Light Oil, & Gas/Light Oil-Fired Burners

Burner specifications and settings

Table 1		Burner data — #2 Fuel oil/Natural gas — Modulating
Boiler	Burner	Pressure	Manifold	Gas Pressure		Gas Pilot	Combustion	Combustion					Servo Motor Cam										Oil			Oil	Fuel
Model	Model	Drop Thru	Pressure	Required at		Pressure	Head		Air				Position Settings									Nozzles				Pressure	Independent
Number	Number	Gas Train		Gas Control			Setting	Indications																			Motor Driven
				Inlet																							3450 RPM
		Inches	Inches	Inches	Inches	Inches		Low		High	Blue	Orange	Red	1	2	3	4	5	6	Qty.	GPH		Brand	Type	Spray	Supply	Suntec	Gear
		W.C.	W.C.	W.C.	W.C.	W.C.		Fire		Fire											@ 100				Angle	PSIG	Type	GPH
				Min	Max																PSIG
488R	RLS28	1.19	4.60	5.79	14	5.0	1	23		67	22	42	70	—	—	—	—	—	—	1	2.75		Delavan	B	70°	180	AL65C	22.0
																				1	2.50				60°
488	RLS28	1.19	4.85	6.04	14	5.0	2	23		67	22	42	70	—	—	—	—	—	—	1	3.00		Delavan	B	70°	180	AL65C	22.0
																				1	2.50				60°
588	RLS38	1.88	5.85	7.73	14	5.0	1	20		50	19	41	55	—	—	—	—	—	—	1	4.00		Delavan	B	60°	167	AL65C	22.0
																				1	3.50				60°
688	RLS50	2.09	5.88	7.97	14	5.0	3	32		90	32	50	90	—	—	—	—	—	—	1	4.50		Delavan	B	60°	173	AL65C	22.0
																				1	5.00				60°
788	RLS50	2.12	5.85	7.97	14	5.0	5	35		83	35	45	83	—	—	—	—	—	—	1	5.50		Delavan	B	60°	168	AL65C	22.0
																				1	6.00				80°
888	RLS70	3.04	4.36	7.40	14	7.5	0	1.5		6.0	—	—	—	130	0	40	120	30	100	1	6.50		Delavan	B	90°	180	AJ4CC	52.5
																				1	6.50				60°
988R	RLS70	3.18	4.14	7.32	14	7.5	0	1.8		7.5	—	—	—	130	0	40	120	27	100	1	7.50		Delavan	B	90°	180	AJ4CC	52.5
																				1	7.25				60°
988	RLS70	3.18	4.39	7.57	14	7.5	1	1.8		7.5	—	—	—	130	0	40	120	27	100	1	7.50		Delavan	B	60°	180	AJ4CC	52.5
																				1	7.50				60°
1088R	RLS70	3.35	3.68	7.03	14	7.5	3	1.9		9.0	—	—	—	130	0	32	120	45	100	1	8.50		Delavan	B	60°	209	AJ4CC	52.5
																				1	7.25				60°
1088	RLS100	3.35	3.93	7.28	14	7.5	4	1.9		9.0	—	—	—	130	0	32	120	45	100	1	8.50		Delavan	B	60°	209	AJ4CC	52.5
																				1	7.50				60°
1188	RLS100	3.55	4.45	8.00	14	6.0	4	2.2		5.2	—	—	—	130	0	30	120	35	100	1	9.00		Delavan	B	60°	180	AJ4CC	52.5
																				1	9.00				60°
1288	RLS100	2.60	5.30	7.9	14	6.0	4	2.0		6.0	—	—	—	130	0	30	120	40	100	1	10.00		Delavan	B	60°	180	AJ4CC	52.5
																				1	10.00				60°
1388	RLS100	3.35	4.65	8.00	14	6.0	9	2.0		6.5	—	—	—	130	0	30	120	40	100	1	11.00		Delavan	B	60°	200	AJ4CC	52.5
																				1	11.00				60°
1488	RLS130	2.81	4.54	7.35	14	6.0	6	2.0		6.0	—	—	—	130	0	40	120	55	100	1	12.00		Delavan	B	60°	200	AJ4CC	52.5
																				1	12.00				60°
1588	RLS130	2.99	4.65	7.64	14	5.5	7	2.5		7.0	—	—	—	130	0	40	120	30	100	1	12.00		Delavan	B	60°	220	AJ4CC	52.5
																				1	12.00				60°
1688R	RLS130	3.40	4.85	8.25	14	5.0	8	2.5		8.0	—	—	—	130	0	40	120	30	100	1	13.00		Delavan	B	60°	215	AJ4CC	52.5
																				1	12.50				60°
1688	RLS130	3.40	5.10	8.5	14	5.0	9	2.0		9.0	—	—	—	130	0	50	120	30	100	1	13.00		Delavan	B	60°	215	AJ4CC	52.5
																				1	13.00				60°

Notes for Table 1, Table 2 and Table 3

1.Burner capacities listed for elevations up to 2,000 feet. For higher eleva- tions, consult local Weil-McLain distributor/ agent or sales office.

2.Light oil ratings based on No. 2 fuel oil with heating value of 140,000 Btu per gallon.

3.Gas ratings based on natural gas with heating value of 1,000 Btu per cubic foot and specific gravity of 0.60. Gas burners for other gases are available. Consult local Weil-McLain distributor/agent or sales office.

4.Boiler-burner unit to be adjusted to achieve +0.10 inches W.C. pressure at the flue collar, resulting in positive pressure in firebox as listed.

5.Minimum gas pressures listed are subject to variations due to job condi- tions. Gas burners for other gas pressures are available. Consult local Weil-McLain distributor/agent or sales office.

6.All gas train sizes shown are based on a supply pressure to the regulator of 7 inches w.c. Optional trains available for other pressures upon request.

7.All Settings and pressures shown are for initial start-up. Final values should be confirmed with combustion analysis.

8.Gas/Light Oil control Systems:

•LHL: Low-high-low-off firing conditions – two position air and fuel controlled by separate motor, open damper pre-purge.

•MOD: On-off operation with proven low fire start and full modu- lating firing conditions. Proportional motor drives fuel metering valve and combustion air damper according to firing conditions; open damper pre-purge.

9.120/60/1 control circuit is used for all burners.

10.All 3 phase models require a separate 12/60/1 control voltage supply.

11.Burner settings shown are for initial start-up. Follow burner manual to adjust burner using combustion test instruments as directed.

12.120/60/1 control circuit is used for all burners.

13.488R to 788 units require a single SPDT controller for LHL firing rate operation on both fuels.

14.888 to 1688 units require a 4 – 20mA 0 – 10vdc or 135 ohm signal for modulation on gas plus a SPDT controller for LHL firing rate operation on oil.

15.Motor relay or contactor is standard on all units.

16.Combustion Controls:

•Siemens LFL 1.335 flame safeguard control monitors the oil or gas burner flame with visual diagnostic window, provides pre-purge and post purge, provides switching necessary to allow firing rate motor to

2 Part No. 550-142-023/0508