Weil-McLain SlimFit 3 Series Advanced Manual
  1. Manuals
  2. Brands
  3. Weil-McLain Manuals
  4. Boiler
  5. SlimFit 3 Series
  6. Advanced manual
Weil-McLain SlimFit 3 Series Advanced Manual

Weil-McLain SlimFit 3 Series Advanced Manual

Commercial condensing gas-fired water boilers
Hide thumbs Also See for SlimFit 3 Series:
Table of Contents

Advertisement

Quick Links

Download this manual
®
Series 3
Models 550 and 750 MBH
Commercial Condensing
Gas-fired water boilers
Advanced Manual
Multiple boiler installation & settings + Single boiler advanced settings
This manual must only be used by a qualified heating installer/service technician. Read all instructions, including this manual and
all other information shipped with the boiler, before installing. Perform steps in the order given. Failure to comply could result in
severe personal injury, death or substantial property damage.
Part number 550-100-569/0321

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SlimFit 3 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Weil-McLain SlimFit 3 Series

Summary of Contents for Weil-McLain SlimFit 3 Series

  • Page 1 ® Series 3 Models 550 and 750 MBH Commercial Condensing Gas-fired water boilers Advanced Manual Multiple boiler installation & settings + Single boiler advanced settings This manual must only be used by a qualified heating installer/service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installing.

  • Page 2: Table Of Contents

    ® SlimFit Series 3 Advanced Manual & & Contents Follow all instructions for installation, start-up and servicing in the SlimFit SlimFit Control — Advanced mode ..3 boiler manual. Use this Advanced Manual for multiple Multiple boiler installations .

  • Page 3: Slimfit Control - Advanced Mode

    ® SlimFit Series 3 Advanced Manual & & SlimFit Control — Advanced mode • Two (2) available Network Priorities allow multiple SlimFit control setup system types/temperature zones. 1. Set control parameters using the WIZARD option provided • Direct-connected DHW tanks (or other heating zones) on initial start-up or manually enter parameters using control can be piped and wired locally to any boiler in the sys- menus explained later in this manual.
  • Page 4 ® SlimFit Series 3 Advanced Manual & & SlimFit Control — ADVANCED mode (continued) SlimFit control Priorities & Input/Outputs Multiple boiler operation • For heating installations with multiple systems, the SlimFit • The SlimFit boiler has an auto detection feature for multiple control uses to determine the order of opera- boiler networks.
  • Page 5 ® SlimFit Series 3 Advanced Manual & & SlimFit Control — ADVANCED mode (continued) OD RESET MAX Figure 1 Outdoor reset operation 1. OD RESET MAX means the outdoor temperature at which the target temperature reaches its minimum (SUPPLY MIN). 2.

  • Page 6: Multiple Boiler Installations

    ® SlimFit Series 3 Advanced Manual & & Multiple boiler installations Placing multiple boilers ONLY air piping can be combined. DO NOT use combined vent piping. Flue gas leakage and 1. Locate multiple boilers in boiler room to provide the boiler component damage can occur.
  • Page 7 ® SlimFit Series 3 Advanced Manual & & Multiple boiler installations (continued) Easy-Fit® piping installation Maximum connected load per manifold: 1. Main header and Easy-Fit® Manifold pipe sizing. 3-inch manifold — 1400 MBH 4-inch manifold — 2900 MBH a. Size system piping as required for the flow. (Do not use manifolds smaller than 3 inch for SF-550 or b.
  • Page 8 & Multiple boiler installations (continued) Figure 8 Piping layout — typical piping for multiple SlimFit boilers, using Weil-McLain Easy-Fit manifolds Use 2” or larger piping for all connections between boilers and manifolds Legend — Figure 8 1 Flow/check valve (each boiler)

  • Page 9: Fast-Track Setup - Requirements By Boiler

    ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Requirements by Boiler Fast-Track Setup DHW circuit in system — For high-demand DHW circuits, the control setting for MIN BOILERS must SlimFit control takes advantage of the SlimFit Fast-Track Setup be set using the NETWORK ...

  • Page 10: Fast-Track Setup - Steps

    ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Steps must be used when using the procedure. This is necessary to ensure that all required settings WIZARD Fast-Track Setup SlimFit are made. In addition, all instructions in the boiler manual must be followed completely.

  • Page 11: Fast-Track Setup - The Wizard

    ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — The WIZARD • is available only on initial setup of the boiler. • T h e l e a d s • Context-sensitive help WIZARD W I Z A R D It cannot be accessed later.
  • Page 12 ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — The WIZARD (continued) If TARGET ADJUST = ODT • – means the outdoor • – Read only (assigned in O D R E S E T M A X SYSTEM TYPE S L I M F I T W I Z A R D...
  • Page 13 ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — The WIZARD (continued) • The timings set on this screen prevent the boiler S L I M F I T W I Z A R D from operating too long on one demand if L O C A L N E T W O R K another demand is present.

  • Page 14: Fast-Track Setup - Typical Application A

    & Fast-Track Setup — Typical Application A Figure 9 Typical Application A — Piping layout — typical piping for multiple SlimFit boilers, using Weil-McLain Easy-Fit manifolds (2-boiler system) (adjust boiler connections as required for other boiler models) NOTICE: This method does not provided DHW redundancy.
  • Page 15 ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Typical Application A (cont.) Failure to set correctly could result in severe personal injury, death or Boiler Model, Altitude are critical settings. substantial property damage. Figure 10 Typical Application A — multiple boiler system — setup requirements (parameters not listed below can be OHIW DW IDFWRU\ GHIDXOW VHWWLQJV XQOHVV VSHFLDO QHHGV LQGLFDWH GL HUHQW VHWWLQJV SETUP FOR Figure 9, page 14 AS SHOWN (DHW directly connected) Boiler Wiring and Control Settings...

  • Page 16: Fast-Track Setup - Typical Application B

    140 – 290 gpm Legend — Figure 11 1 Flow/check or spring check valve. 21 Indirect-fired storage water heaters (Weil-McLain Aqua Plus Line shown) — This piping is Isolation valves (when used). Example is shown with each water heater having its own circulator. Alternate: s u g g e s t e d Caps.
  • Page 17 ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Typical Application B (cont.) Failure to set correctly could result in severe personal injury, death or Boiler Model, Altitude are critical settings. substantial property damage. Figure 12 Typical Application B — multiple boiler system — setup requirements (parameters not listed below can be OHIW DW IDFWRU\ GHIDXOW VHWWLQJV XQOHVV VSHFLDO QHHGV LQGLFDWH GL HUHQW VHWWLQJV Boiler Wiring and Control Settings (See Figure 11, page 16 for items referenced)

  • Page 18: Fast-Track Setup - Typical Application C

    ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Typical Application C Figure 13 Typical Application C — Piping layout — typical piping for multiple SlimFit boilers, using isolation exchanger (adjust boiler connections as required for other boiler models) Use isolation heat exchanger for: 1.
  • Page 19 ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Typical Application C (cont.) Failure to set correctly could result in severe personal injury, death or Boiler Model, Altitude are critical settings. substantial property damage. Figure 14 Typical Application C — multiple boiler system — setup requirements (parameters not listed below can EH OHIW DW IDFWRU\ GHIDXOW VHWWLQJV XQOHVV VSHFLDO QHHGV LQGLFDWH GL HUHQW VHWWLQJV Boiler Wiring and Control Settings (See Figure 13, page 18 for items referenced)

  • Page 20: Fast-Track Setup - Typical Application D

    ® SlimFit Series 3 Advanced Manual & & Fast-Track Setup — Typical Application D Figure 15 Typical Application D — Piping layout — typical piping for multiple SlimFit boilers, using isolation exchanger (adjust boiler connections as required for other boiler models) Legend —...
  • Page 21 System Function Notes: Combine Weil-McLain condensing boilers and large-mass boilers in one system controlled by the SlimFit control. Use condensing boilers during LOW-LOAD periods (spring, fall) and high-mass boilers during HIGH-LOAD periods. The SlimFit control will sequence the high mass boiler when needed.

  • Page 22: Field Wiring (See Wiring Diagram, )

    ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32) Figure 17 Wire entrances — For your safety, turn off ELECTRICAL SHOCK HAZARD electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.
  • Page 23 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32) A. 120 VAC Power Supply – REQUIRED Terminal Block T1 (control tray, right front) 1. Boiler line voltage power — Boiler load is 18 amps. Provide and install a fused disconnect or service switch (25- or 30-ampere rated recommended) as required by applicable codes.
  • Page 24 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) C. 120 VAC to Boiler Circulator – REQUIRED Terminal Strip P8 on Pump/Comm Board (control tray, left side) 1. Provides 120 VAC Dry Contact for boiler circulator. 2.
  • Page 25 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) D. 24 VAC Inputs 1, 2 and 3 (tstats, end switches, etc.) – As needed for systems Terminal Strip P11 (input 1) & Terminal Strip P15 (inputs 2 & 3) (SlimFit control module, left side) 1.
  • Page 26 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) E. System supply and return temperature sensors – REQUIRED Terminal Block P14 (SlimFit control module, left side) 1. Two strap-on temperature sensors are shipped with each boiler. Attach one to the system supply piping and the other to the system return piping.
  • Page 27 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) G. External limits – OPTIONAL To cause MANUAL reset: Terminal Block P13 #1 & #2 (SlimFit control module, left side) SlimFit control will require manual reset after circuit is interrupted 1.
  • Page 28 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) I. 3URRI RI FORVXUH ÀRZ VZLWFK DQGRU &$' – OPTIONAL Jumper on Terminal Strip P7 (SlimFit control, bottom left of center) 1. A flow switch or combustion air damper (CAD) interlock can be config- ured by clipping the purple wire attached to Pin 3 of P7 such that there is sufficient room to strip ends and connect to field wiring.
  • Page 29 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) J. 0–10 VDC Remote TARGET input – OPTIONAL Terminal Block P15 #5 & #6 (SlimFit control module, left side) 1. See illustration at right and Figure 18, page 32 (wiring diagram) for details. 2.
  • Page 30 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) K. 0–10 VDC Remote MODULATION input – OPTIONAL Terminal Block P15 #5 & #6 (SlimFit control module, left side) — Remote modula- Using an external multiple boiler controller tion using an external controller only works with each boiler set up as a SINGLE boiler in the SlimFit Control setup.
  • Page 31 ® SlimFit Series 3 Advanced Manual & & Field wiring (see wiring diagram, Figure 18, page 32)(continued) M. Multiple Boiler and BMS Connections Terminal Strips P11 and P12 on Expansion Module (control tray, left side) 1. The boiler control is capable of multiple boiler communication and control SlimFit of up to eight boilers in one installation.

  • Page 32: Wiring Diagram - Schematic

    ® SlimFit Series 3 Advanced Manual & & Wiring diagram — schematic Figure 18 SlimFit schematic wiring diagram (see Figure 21, page 36 for legend and notes) – 32 – Part number 550-100-569/0321...
  • Page 33 ® SlimFit Series 3 Advanced Manual & & Wiring diagram — schematic (continued) Figure 20 SlimFit (continued from previous page) schematic wiring diagram — SF-550 & SF-750 Part number 550-100-569/0321 – 33 –...

  • Page 34: Wiring Diagram - Ladder

    ® SlimFit Series 3 Advanced Manual & & Wiring diagram — ladder Figure 19 SlimFit ladder wiring diagram (see Figure 18, page 32 for schematic wiring diagram) – 34 – Part number 550-100-569/0321...
  • Page 35 ® SlimFit Series 3 Advanced Manual & & Wiring diagram — ladder (continued) Figure 21 SlimFit (continued from previous page) ladder wiring diagram — SF-550 & SF-750 Part number 550-100-569/0321 – 35 –...

  • Page 36: Zoning With The Slimfit Control

    ® SlimFit Series 3 Advanced Manual & & Zoning with the SlimFit Control A. Zoning with CIRCULATORS, suggested applications Multiple space heating zones — Optional DHW direct-piped to one or more boilers 1. Review wiring information on page 23 (120 VAC out- puts) and page 25 (24 VAC inputs).
  • Page 37 ® SlimFit Series 3 Advanced Manual & & Zoning with the SlimFit Control (continued) B. Zoning with CIRCULATORS, suggested applications WMCR circulator zone controller plus DHW controlled by boiler, Optional DHW 1. Review wiring information on page 23 (120 VAC out- puts) and page 25 (24 VAC inputs).
  • Page 38 ® SlimFit Series 3 Advanced Manual & & Zoning with the SlimFit Control (continued) C. Zoning with ZONE VALVES, multiple boilers, suggested applications (see SlimFit Boiler Manual for single boiler suggested applications) Multiple space heating zones with direct-piped DHW on one or more boilers (optional) This suggested application only applies to systems with DHW piped directly to individual boilers.
  • Page 39 ® SlimFit Series 3 Advanced Manual & & Zoning with the SlimFit Control (continued) D. Zoning with ZONE VALVES, multiple boilers, suggested applications (see SlimFit Boiler Manual for single boiler suggested applications) WMZV zone valve zone controller plus DHW controlled by boiler, Optional DHW .

  • Page 40: Slimfit Control - Initial Screens

    ® SlimFit Series 3 Advanced Manual & & SlimFit Control — INITIAL SCREENS Figure 20 Initial navigation — Accessing CONTRACTOR menus (multiple-boiler screens shown) – 40 – Part number 550-100-569/0321...

  • Page 41: Control Operation

    ® SlimFit Series 3 Advanced Manual & & Control operation Figure 21 Control sequence of operation Display Control action status (Also see Figure 22, page 42) text • Check the boiler model listed on the power-up screen. If it is not correct, turn off the boiler. See page 43 for in- POWER structions to change setting.
  • Page 42 ® SlimFit Series 3 Advanced Manual & & Control operation (continued) Figure 22 SlimFit control display screens and typical navigation – Advanced mode, multiple boilers – 42 – Part number 550-100-569/0321...

  • Page 43: Available Control Settings - Advance Mode

    ® SlimFit Series 3 Advanced Manual & & Available control settings – Advance Mode Figure 23 SlimFit control settings available in ADVANCED MODE (see Boiler Manual for BASIC MODE settings) Menus and Items Default setting Range/options BOILER SETTINGS Menu (page 47) Factory set All SlimFit models available •...
  • Page 44 ® SlimFit Series 3 Advanced Manual & & Available control settings – Advance Mode (continued) Figure 23 SlimFit control settings available in ADVANCED MODE, continued Menus and Items Default setting Range/options • ACTIVATE CONTACT OFF, 1st, 2nd, ODT (ADDITIONAL HEAT DEMAND) •...

  • Page 45: System Type Presets

    ® SlimFit Series 3 Advanced Manual & & SYSTEM TYPE presets Figure 24 System types available (each option provides factory presets for operating parameters) 8-Character 3-Character Supply Max Blr OD Reset Supply OD Reset Run System System Type Boiler Abbreviation Abbreviation Max °F Temp °F)

  • Page 46: Contractor Menus

    ® SlimFit Series 3 Advanced Manual & & CONTRACTOR menus 1. Access contractor menus by pressing and holding the UP and Boiler Model, Altitude are critical settings. DOWN arrow keys at the same time for 7 seconds. Failure to set correctly could result in severe per- 2.

  • Page 47: Boiler Settings Menu

    ® SlimFit Series 3 Advanced Manual & & BOILER SETTINGS menu 1. Access contractor menus by pressing and holding the UP and Boiler Model, Altitude are critical settings. Failure to set correctly could result in severe per- DOWN arrow keys at the same time for 7 seconds. sonal injury, death or substantial property damage.

  • Page 48: Network Settings Menu

    ® SlimFit Series 3 Advanced Manual & & NETWORK SETTINGS menu 1. Access contractor menus by pressing and holding the UP and Boiler Model and Altitude are critical settings. Failure to set correctly could result in severe per- DOWN arrow keys at the same time for 7 seconds. sonal injury, death or substantial property damage.

  • Page 49: Rotation And Sequence

    ® SlimFit Series 3 Advanced Manual & & ROTATION AND SEQUENCE 1. Access contractor menus by pressing and holding the UP and Boiler Model, Altitude are critical settings. Failure to set correctly could result in severe per- DOWN arrow keys at the same time for 7 seconds. sonal injury, death or substantial property damage.
  • Page 50 ® SlimFit Series 3 Advanced Manual & & ROTATION AND SEQUENCE (continued) Figure 29 SlimFit sequencing options — SMART, PARALLEL or SERIES (examples shown for 3-boiler network) SERIES Sequencing PARALLEL Sequencing SMART Sequencing +LJKHU 3DUW/RDG ( FLHQF\ Quicker Boiler Response Time STAGE 1 –...
  • Page 51 ® SlimFit Series 3 Advanced Manual & & ROTATION AND SEQUENCE (continued) Figure 30 Boiler sequencing — adding and dropping boilers Part number 550-100-569/0321 – 51 –...

  • Page 52: Network Boiler Priority Menus

    ® SlimFit Series 3 Advanced Manual & & Network Boiler PRIORITY menus 1. Access contractor menus by pressing and holding the UP and Boiler Model, Altitude are critical settings. Failure to set correctly could result in severe per- DOWN arrow keys at the same time for 7 seconds. sonal injury, death or substantial property damage.
  • Page 53 ® SlimFit Series 3 Advanced Manual & & Network Boiler PRIORITY menus (continued) Figure 31 SlimFit PRIORITY menus, continued MENU ITEM DESCRIPTION • This is the amount the temperature must rise above target (or Boiler Max) to turn the boiler BOILER OFF DIFF OFF.

  • Page 54: Single Boiler Priority Menus

    ® SlimFit Series 3 Advanced Manual & & Single Boiler PRIORITY menus 1. Access contractor menus by pressing and holding the UP and Boiler Model, Altitude are critical settings. DOWN arrow keys at the same time for 7 seconds. Failure to set correctly could result in severe per- 2.
  • Page 55 ® SlimFit Series 3 Advanced Manual & & Single Boiler PRIORITY menus (continued) Figure 32 SlimFit single boiler PRIORITY menus, continued MENU ITEM DESCRIPTION BOILER ON DIFF • This is the amount the temperature must drop below target to turn the boiler ON. BOILER OFF DIFF •...

  • Page 56: Assign Inputs Menu

    ® SlimFit Series 3 Advanced Manual & & ASSIGN INPUTS menu 1. Access contractor menus by pressing and holding the UP and Boiler Model, Altitude are critical settings. Failure to set correctly could result in severe per- DOWN arrow keys at the same time for 7 seconds. sonal injury, death or substantial property damage.

  • Page 57: Aux Pump/Output Options

    ® SlimFit Series 3 Advanced Manual & & AUX PUMP/OUTPUT options Figure 34 AUX PUMP/ OUTPUT operation (accessed in ASSIGN INPUTS menu – see page 56) Option Activation conditions Suggested uses • Hot loop for seasonal boilers that are manually ALWAYS ON •...

  • Page 58: Additional Heat Demand

    ® SlimFit Series 3 Advanced Manual & & Additional heat demand Additional heat demand c. With this option selected to YES, the boiler and additional heat demand/0-10v output will modulate based on the 1. This settings acts as a contact to activate other boilers or heat- system temperature.

  • Page 59: Maintenance, Date And Time Menus

    ® SlimFit Series 3 Advanced Manual & & MAINTENANCE, DATE AND TIME menus Figure 36 MAINTENANCE, DATE AND TIME menus — navigation (see Figure 22, page 42 for access information) Maintenance Info Comments Name Contractor name to appear in maintenance reminders and during lockouts Phone Contractor phone number Model...
  • Page 60 ® SlimFit Series 3 & & Advanced Manual...

This manual is also suitable for:

Slimfit 550 mbhSlimfit 750 mbh

Table of Contents