Transom – Thermal Systems Associates

Electric Heat Pumps

Why Transom?

The Transom line of HVAC product are developed and built to simplify the application and installation to the various systems. With features such as the built-in pump and flow switches installation cost is reduced for the chiller installation.
Advantages

Not only are they rich in features, they are compact and designed for serviceability. Installation is simple, just hook up the power and piping, then start up the unit. All Chillers are test run before leaving the factory.

With the Simcoe Air Source Heat Pump units, the capacity generates varies with the ambient temperatures. This will result in the capacity generated higher ambient temperatures being greatly increased. If this is not addressed then it will lead to excessive cycling of the compressor which in turn, will lead to greater fluctuation in the system supply temperature.

The Severn unit has a variety of methods to control leaving water temperature (LWT). It allows for staging of the compressors. There is also a bypass loop that controls the LWT, as well as control of the head pressure. Using multiple unit modular system allows for larger installed systems as well as greater turn down.

The vapour injected scroll compressor will give a large ambient temperature operating range with supply water temperature set point adjustable from 90°F to 180°F. The Severn water sourced heat pump can operate from 30°F to over 120°F ambient temperature.

The Hatch unit has a variety of methods to control leaving water temperature (LWT). The compressor is DC inverter driven with a wide operating range. This allows the same machine to be applied to a single pass (high ΔT) or multiple pass (low ΔT) without additional adjustment. The unit comes equipped with a variable capacity inverter driven compressor. The compressor is equipped with a vapour injection port allowing the use of an economizer circuit to increase the capacity at low ambient conditions as well as good COP. The unit is also equipped with variable speed fans that will modulate in accordance with the ambient conditions.

The vapour injected scroll compressor will give a large ambient temperature operating range with supply water temperature set point adjustable from 70°F to 140°F. The air sourced heat pump can operate from -30°F to over 95°F ambient temperature.