I purchased a Honeywell Thermostat (RTH230B) to replace a Janitrol HPT 18-60. The Janitrol has 7 wires hooked to the back and the Honeywell only has 5 places for wires. Is my Honeywell compatible? Thanks

If your Janitrol is a heat pump it is not compatible. No multistage heating.

http://customer.honeywell.com/techlit/pdf/69-0000s/69-1800.pdf

AND

http://customer.honeywell.com/techlit/pdf/67-0000s/67-5114.pdf