56035 Locations Locations of remote control buttons (.1.) DISPLAY button p.19 ( 2) MENU buttons • MENU A/T buttons • MENU -/+ buttons

Thread)3-1/4” Type “J” Thermocouple Ungrounded Junction Chromalox® DIVISION 4 SECTION GCHIS-CSALESREFERENCEDATESERVICE REFERENCEInstallation InstructionsandRENEWAL PARTS IDENTIFICATIONPE433-3161-562803-001NOVEMBER, 1998(Supersedes PE433-2) GCHIS-C Circulation Heater For Gas Heating Model Dimensions (In.) E1 E2 kW Volts CKT PH A B C GCHIS-CO5 GCHIS-CO5E2 0.5 120 1 1 14 8 4 GCHIS-CO5 GCHIS-CO5E2 0.5 240 1 1 14 8 4 GCHIS-C10 GCHIS-C10E2 1.0 120 1 1 20 14 10 GCHIS-C10 GCHIS-C10E2 1.0 240 1 1 20 14 1

Dimensions (in.) A B C GCHMT-30105 120 1 1 15 20-1/2 9-3/8 — GCHMT-3105 240 or 480 1 or 3 23 GCHMT-30305 240 or 480 1 or 3 3 15 30-5/8 22-1/2 16-1/2GCHMT-3305 23 GCHMT-30505 240 or 480 1 or 3 5 15 56-3/8 45-1/4 39-1/4 GCHMT-3505 23 30-5/8 22-1/2 16-1/2 GCHMT-30755 240 or 480 1 or 3 7.5 15 67-1/8 56 50 GCHMT-3075 23 56-3/8 45-1/4 39-1/4 GCHMT-30905 240 or 480 1 or 3 9 15 78-1/8 67 61 GCHMT-3905 23 56-7/8 45-1/4 39-1/4 WARNING: Safe operating conditions depend on operating pressure, mass velocity