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  5. Installation, Operation And Maintenance Instructions

Laars Horizon Installation, Operation And Maintenance Instructions

Manual is about: Oil fired boiler

Summary of Horizon

  • Page 1

    Installation, operation and maintenance instructions document 1104b installation, operation and maintenance instructions for horizon oil fired boiler for your safety: this product must be installed and serviced by a professional service technician, qualified in boiler installation and maintenance. I...

  • Page 2

    Page 2 laars heating systems company table of contents section 1. General information 1a. Freight claims .............................................. 3 1b. General information ...................................... 3 1c. Boiler installation .......................................... 3 1d. Boiler l...

  • Page 3

    Horizon page 3 section 1. General information 1a. Freight claims inspection should be made of boiler and components for damage upon arrival. Any claims for damage should immediately be filed against the carrier by the consignee. 1b. General information these boilers have been designed and constructe...

  • Page 4

    Page 4 laars heating systems company 1l. Oil use only no. 2 heating oil. Do not use gasoline, crankcase draining or any oil containing gasoline. 1m. Oil storage and pipe layout (see figures 3 and 4) figure 3: one-pipe system - pipe and tank layout. Figure 4: two-pipe system - pipe and tank layout. 1...

  • Page 5

    Horizon page 5 2d. Maintenance of the tankless coil after several years of use, the water flow through the coil may become restricted by mineral deposits from the water. Mild accumulations may be removed by an acid treatment, but your servicing company can advise on the most satisfactory method of c...

  • Page 6

    Page 6 laars heating systems company figure 2. 1. Fit front panel (1) 2. Attach side panels (2) and (3) to bottom of boiler and front panel 3. Fix rear panels (4) and (5) to side panels 4. Fit top panel (6) relief valve bolted coil flange for easy re-tightening - no studs to break aquastat relay dom...

  • Page 7

    Horizon page 7 tapping npt tankless coil ¾" tridicator ¼" hydronic return 1¼" hydronic supply 1¼" aquastat well ¾" relief valve fitting ¾" alternate hydronic return 1¼" figure 3. Supply pipe vent relief valve tridicator ½" n.P.T. Aquastat relay l8124a ¾" n.P.T. Wiring conduit to circulator oil burne...

  • Page 8

    Page 8 laars heating systems company figure 4. Dimensions ref hc 100 hc 125 hc 145 hc 175 hc 205 hc 240 hc 270 hc 300 jacket height a 39" 39" 42" 42" 45¾" 45¾" 45¾" 45¾" jacket width b 21" 21" 23" 23" 25" 25" 25" 25" jacket length c 21" 21" 23" 23" 25" 25" 29" 29" overall length d 32" 32" 34" 34" 36...

  • Page 9

    Horizon page 9 pipe lengths "h" one pipe gravity system 3/8" o.D. 1/2" o.D. Ft ft ft 0 1½ 33 65 3 65 130 5 130 260 6½ 195 325 pipe lengths "h" two pipe lift system 3/8" o.D. 1/2" o.D. Ft ft ft 0 115 330 1½ 100 330 3 80 330 5 65 295 6½ 50 230 9½ 25 100 11 20 65 figure 5. One-pipe system. Figure 6. Tw...

  • Page 10

    Page 10 laars heating systems company figure 7. Wiring arrangement for hc boiler controlling operation of boiler and circulator power supply provides disconnect means & overload protection as required. 24v room thermostat 1k l1 (hot) power supply 120v l2 circulator switch low limit circulator hi lim...

  • Page 11

    Horizon page 11 section 3. Part numbers part number description size 57-002 boiler body ............................... 100/125 57-072 inspection cover assembly ..... 100/125 57-090 burner door assembly ............ 100/125 57-136 flue cover assembly .............. 100/125 57-170 front panel assembl...

  • Page 12

    57-207b 800.900.9276 • fax 800.559.1583 (customer service, service advisors) 20 industrial way, rochester, nh 03867 • 603.335.6300 • fax 603.335.3355 1869 sismet road, mississauga, ontario, canada l4w 1w8 • 905.238.0100 • fax 905.366.0130 www.Laars.Com litho in u.S.A. © laars heating systems 0805 do...