If its a Gloworm Spacesaver 50 it is best to take the whole case off.4 wing nuts located at each corner.Then turn the gasvalve knob so the pilot sign is in line with the arrow.Push that knob in and put a lit taper to the pilot.then most importantly if it lights HOLD the button in for 30 secs.Then let the button out.Replace the case and tighten the wing nuts before you then turn the gasvalve knob from pilot to on.Then refit the bottom panel.Switch the clock on and call for heat and you should be working.
Tony S, November 2008