White Rodgers 1050 Dial Settings Cont, D. Additional Information, Chart 1 - Round Dial Set at “N”

D.ADDITIONAL INFORMATION:

Charts 1, 2, and 3 show the effect which dial settings have upon boiler water temperature under varying outside air temperatures. Some examples of how these charts may be used are as follows:

Example 1 (See Chart 1) – To determine boiler water tempera- ture for 10° outside air temperature and a #3 square dial setting, move up on 10° line until it intersects the heavy line for a #3 square dial setting. Then move horizontally to left and read water temperature of 150°.

Example 2 (See Chart 1) – To determine square dial setting for desired boiler water temperature of 210° at -20°outside temperature, move up on -20°line to 210°. Since the heavy line for a #4 square dial setting intersects at this point, the square dial should be set at 4.

Example 3 – Note the effect of changing setting of the round dial from “N” (Chart 1) to 4 divisions “warmer” than “N” (Chart 3). Water temperature has been increased 20° for all outside temperatures.

									5
									4
									3
(116)	240								2
									1
(104)	220
(93)	200	5
(82)	180	4
										N
(71)	160	3
(60)	140	2
(49)	120	1
(38)	100
(27) 80
°C °F
	-20	-10	0	10	20	30	40	50	60	70°F
	-29	-23	-17	-12	-7	-1	4	10	16	21°C

Chart 2 — Round Dial Set 2 divisions “COOLER” than “N”.

DIAL SETTINGS CONT.

									5
									4
									3
(116)	240								2
									1
(104)	220	5
(93)	200	4
(82)	180	3
(71)	160									N
		2
(60)	140	1
(49)	120
(38)	100
(27) 80
°C °F
	-20	-10	0	10	20	30	40	50	60	70°F
	-29	-23	-17	-12	-7	-1	4	10	16	21°C

Chart 1 — Round Dial Set at “N”

(127)	260								5
									4
									3
(116)	240	5							2
									1
(104)	220	4
(93)	200	3
(82)	180	2							N
(71)	160	1
(60)	140
(49)	120
(38)	100
(27) 80
°C °F
	-20	-10	0	10	20	30	40	50	60	70°F
	-29	-23	-17	-12	-7	-1	4	10	16	21°C

Chart 3 — Round Dial Set 4 divisions “WARMER” than “N”.

5