(12:00 - 12:00 will not switch on the boiler) 12:00 3 12:30 3 To Set Own ON and OFF times. Symbol in Display = ON time A Slide switch: set clock - auto - set programme B Display. Symbol in Display = Timer ON P Select programme ON/OFF 1.....8 D Push buttons Time + Time - E Override: Boiler will switch ON if boiler is OFF; and OFF if is ON F I=Heating continuous - AUTO=Heating timed - O=Heating disabled R Reset (with pencil) only with switch A in set clock position 4. Press button (P) Display 12:0

For assistance or additional information, consult a qualified installer, service agency or the gas supplier. Read these instructions carefully before installing. Manufacturer of Hydronic Heating Products P.O. Box 14818 3633 I. Street Philadelphia, PA 19134 Tel: (215) 535-8900 • Fax: (215) 535-9736 • 2 Table of Contents I. Product Description . . . . . . . . . . . . . . . . . . . 1 II. Specifications . . . . . . . . . . . . . . . . . . . . . . . . 2 III. Before Installing . . . . . . . . . . . .

With the Display Board, the user has the capability to choose between a 45, 90, or 180 second post circulate time period, or turn the pump on continuously. This provides flexibility in selecting the post circulate time to meet specific installation requirements, and improves the efficiency of the circulating pump operation. To change or view the current programmed post-circulating time: 1. Press the SELECT push-button on the display board until the LED display reads "OP" (Options). See Figure 16

In conjunction with the four green stage LEDs, the user can monitor and change settings on the various stages. (See Figure 16.) Inlet*: Temperature shown is Inlet Water Temperature. Outlet: Temperature shown is Outlet Water Temperature. Set-Point**: Indicated probe set-point is being displayed. Set-Point Differential: Shows differentials of each stage. Standby: Indicates Set-Point is Satisfied. Boiler in Idle State. *Defaults to tank probe temperature when Dip Switch "D" on Central Control Board

For assistance or additional information, consult a qualified installer, service agency or the gas supplier. This boiler requires a special venting system. Read these instructions carefully before installing. CR®WN Boiler Co. Manufacturer ofHydronic He ating Products P.O. Box 14818 3633 I. Street Philadelphia, PA 19134 Tel: (215) 535-8900 • Fax: (215) 535-9736 • IMPORTANT INFORMATION - READ CAREFULLY All boilers must be installed in accordance with National, State and Local Plumbing, Heati

The valve sizing does change based on the designed boiler AT, since the flow rate and the pressure drop change for each. See Appendix B for proper valve selection. f. Glycol Antifreeze Solutions - Many systems today use ethylene or propylene glycol antifreeze solutions as a measure for freeze protection, as well as a pump lubricator and corrosion inhibitor. The properties of the glycol mixture have an impact on valve and pump sizing. All glycol solutions have a lower specific heat than water. T

The 14 gauge mounting bracket must be attached to the jacket first using four (4) #8 x %” drill point sheet metal screws. One may find it easier to install some of the conduit connectors with their corresponding conduit runs onto the RTC back panel before mounting to the bracket. The actual controller can and should be removed from the back panel during the mounting process. This will eliminate the potential for accidental damage to the controller. The RTC back panel is mounted onto the brack

The temperature must be set below the lowest permissible temperature for any system related component affected by boiler supply water. Under no circumstances can the high limit aquastat be set higher than 250°F. I. BOILER MODULATING CONTROL - Various controls are used to modulate burner firing rates. No attempt will be made to cover every possibility, however a general outline will be given. Most modulation controls require the entry of a boiler temperature identifying boiler operation at the

Do not rely on the pressure gauge to indicate that the boiler is at zero pressure. Open the safety valve to relieve all internal pressure prior to proceeding. Safety valve discharge piping must be piped such that the potential for burns is eliminated. e. Unscrew the probe from the boiler tapping. f. Inspect that portion of the probe that is exposed to the boiler water for a scale or sediment buildup. g. Light deposits may be removed by wiping the probe with a damp cloth. Wiping the probe with

WATER DESCRIPTION CROWN PART # QUANTITY HYDROLEVEL 550 LWCO 450560 1 L4006E1109 35-3100 1 3/4 LONG WELL 35-1020 1 B. STEAM GRAVITY RETURN DESCRIPTION CROWN PART # QUANTITY #64 LWCO 40-640 1 STEAM FITTING PACKAGE 332001 1 C. STEAM PUMPED RETURN DESCRIPTION CROWN PART # QUANTITY #150S-MD LWCO 40-160 1 STEAM FITTING PACKAGE 332001 1 D. STEAM FITTING PACKAGE DESCRIPTION CROWN PART # QUANTITY 3/4 BLACK EXTENSION 95-090 1 3/4 X 1/4 BRASS BUSHING 950016 1 90 DEG. BRASS PIGTAIL 95